JP4169659B2 - Insulation material mounting structure - Google Patents

Description

  The present invention realizes an externally bonded heat insulating structure by rationalizing the mounting structure of the outer wall panel to the housing and the mounting structure of the heat insulating material to the housing when fixing the heat insulating material to the outside of the steel frame housing. The present invention relates to a heat insulating material mounting structure.

  When a building having a steel frame is used as a heat insulating structure, it is required to reduce the number of so-called thermal bridges where outdoor heat is transferred to the steel frame as much as possible to prevent condensation and improve heat insulation efficiency. . As a heat insulating structure in such a steel structure building, as described in Patent Document 1, a heat insulating plate is arranged along the outer wall panel between the floor slab and the lower flange of the beam arranged on the upper part. The lower end of the heat insulating plate is connected to the upper surface of the floor slab directly or via a heat insulating material provided on the upper surface of the floor slab, and the upper end of the heat insulating plate is formed to be able to engage with the lower flange of the beam and It is connected to an elastic body with heat insulation covering the indoor side surface of the beam, and a heat insulating plate is arranged on the indoor side surface of the beam web so that the lower end of the heat insulating plate is placed on the elastic body and the upper end is raised. The thing connected to the heat insulation board arrange | positioned at the lower surface or ceiling of the floor slab of a floor is proposed.

  In the above technology, the outer wall panel uses a relatively thick and heat insulating material such as lightweight cellular concrete (ALC) panel or precast concrete (PC) panel. An unstructured book wall is constructed by attaching it to the frame at about two places on both ends.

  Explaining the structure to attach the outer wall panel to the frame, the L-shaped hardware is fixed to the upper flange of the foundation or beam with the horizontal piece protruding outward, and the L-shaped hardware is protruded downward to the lower flange of the beam. Let it be fixed. The lower end of the outer wall panel is placed on the horizontal piece, the upper end is brought into contact with the vertical piece, and the fixing metal is inserted into the bolt protruding from the outer wall panel, and the vertical piece is sandwiched between the fixing metal and the outer wall panel. Install by fastening the bolts. Therefore, in the technique of Patent Document 1, the heat insulating plate is arranged on the indoor side of the L-shaped hardware and is arranged along the indoor side surface of the outer wall panel.

  The technique described in Patent Document 2 is a heat insulating wall of a steel frame building, in which a convex ventilator edge is disposed outside the metal frame, and a screw is penetrated to be fastened to the metal frame. A heat insulating material is overlapped on the mounting surface of the ventilator rim and fastened to the ventilator rim, and an exterior material is attached to the projecting end of the ventilator rim. In this technique, siding is assumed as an exterior material, and this siding is fastened to the ventilator edge by screws arranged at a fine pitch.

JP 2003-027619 A Japanese Patent Laid-Open No. 10-140688

  In the case of configuring the externally bonded heat insulating construction method, it is preferable to arrange a heat insulating plate on the outdoor side surface of the housing and fix it to a pillar or a beam, and attach an outer wall panel to the outdoor side surface of the heat insulating plate. However, the actual situation is that the mounting structure of the heat insulating material which is configured by making the thermal bridge as small as possible has not been solved. In particular, there is no solution at all regarding an externally bonded heat insulating construction method that can be adopted in a structure in which an outer wall panel is attached to a housing as an unstructured book wall.

  That is, although the technique of Patent Document 1 is currently used effectively, this structure is an inner heat insulating method, not a so-called outer heat insulating structure. For this reason, it is necessary to avoid the portion of the beam to which the outer wall panel is attached and to provide a heat insulating material, and there is a problem that the accommodation becomes complicated.

  The technique of Patent Document 2 is an externally bonded heat insulating construction method in which a heat insulating plate is attached to the outer surface of a steel frame, but the exterior material is fixed to a metal frame arranged in the vertical direction of the building using a plurality of screws. However, there is a problem that the number of fixing parts is large and the operation becomes complicated, and the formed outer wall cannot be said to be an unstructured book wall.

  The objective of this invention is providing the attachment structure of the heat insulating material which can implement | achieve an external sticking heat insulation construction method rationally by sticking a heat insulating material on the surface of the outdoor side of a housing.

In order to solve the above-mentioned problems, the heat insulating material mounting structure according to the present invention has a long or piece-like hardware attached to a steel beam constituting a steel frame, and a plate-like heat insulating material is opposed to the hardware. Along the outer wall panel along the outdoor side surface of the plate-shaped heat insulating material, fasten a bolt between the outer wall panel and the hardware or between the mounting plate overlapping the hardware and the heat insulating material from the indoor side, In the mounting structure of the heat insulating material in which the plate-shaped heat insulating material is sandwiched by the outer wall panel and the hardware or the outer wall panel and the mounting plate through the bolt fastening, the plate-shaped heat insulating material has a bolt hole for inserting the bolt. And a reinforcing member is attached at a position facing the hardware or the mounting plate, and the reinforcing member has a diameter that allows the bolt to be inserted therethrough, and a sleeve that fits into the bolt hole, and is integrated with the sleeve The sleeve has a buckling resistance capable of resisting the tensile force acting on the bolt, and the plate distributes the tensile force acting on the bolt to distribute the tensile force. It is characterized by being configured to transmit to a plate-shaped heat insulating material .

  In the heat insulating material mounting structure, the reinforcing member is preferably made of synthetic resin.

  Moreover, in any one of the above-described heat insulating material mounting structures, a spacer is preferably provided between the heat insulating material and the outer wall panel in a state of being inserted into the bolt. The outer wall panel is formed in two places, the upper end portion and the lower end portion, which are the longitudinal direction of the heat insulating material. Alternatively, it is preferably supported by a mounting plate.

  In the mounting structure of the heat insulating material, a mounting metal hardware is attached to the steel beam, a plate-shaped heat insulating material (hereinafter referred to as “heat insulating plate”) is opposed to the mounting hardware, and the surface of the heat insulating plate on the outdoor side. Along with the outer wall panel and attaching the outer wall panel and the heat insulating plate to the mounting hardware, it is possible to cover the outdoor side surface of the housing with the heat insulating plate by realizing the externally bonded heat insulating construction method, which may become a thermal bridge The part which has is only the support metal fitting which mounts and supports the lower end of an outer wall panel and a heat insulation board, and the bolt for attaching an outer wall panel and a heat insulation board to an attachment metal fitting.

  For this reason, the thermal bridge is reduced as much as possible without being interrupted by the small beam installed on the indoor side of the beam, and the space between the upper surface of the foundation and the roof is continuously connected to the surface of the frame by the heat insulating plate. The heat insulation structure can be made, and the continuity with the heat insulating material on the roof surface can be maintained.

  Also, since beams are not avoided, such parts are unnecessary, and the number of parts can be reduced.

  The present invention realizes an externally bonded heat insulating construction method in which a heat insulating plate is attached to the outside of a housing with as few thermal bridges as possible when a building having a steel frame is made into a heat insulating structure. In particular, the present invention can be applied particularly advantageously when at least the upper end side of the outer wall panel is attached to a beam constituting the frame and configured as an unstructured book wall.

  In the present invention, the structure of the steel frame is not particularly limited. However, it is preferable that the beams constituting the frame are made of H-shaped steel having a preset cause. In addition, the pillars constituting the casing may be square pipes having a rectangular cross section, or lip groove steel having a C-shaped cross section may be used in the form of a square pipe by welding with a lip or web in contact. Is possible.

  The book wall formed by attaching a plurality of outer wall panels to the housing may have a rigid structure, but is preferably an unstructured book wall. In such an unstructured book wall, no external force acts on the outer wall panel attached to the housing, and therefore, each outer wall panel does not function as a structural member.

  Also, the outer wall panel attached to the housing has a so-called locking structure that rotates around the attachment point with respect to the housing when a horizontal load acts on the building and the relative position of the upper and lower beams changes accordingly. It is preferable to have. By adopting such a rocking structure, even when a horizontal load is applied to the frame as in an earthquake, the damage is prevented by following the movement of the beams that make up the frame regardless of the action of the horizontal load. It becomes possible to do.

  When the outer wall panel is attached to the housing to form a locking structure, the outer wall panel is attached to the housing at two locations in the vertical direction. In particular, the upper end side of the outer wall panel is attached to a steel beam arranged at the upper part via an attachment metal, and the lower end side is placed on a support metal object arranged at the upper part of the foundation or attached to the upper flange of the steel beam. . The mounting hardware and the support hardware constitute the hardware of the present invention.

  The shape and structure of the mounting hardware are not particularly limited. However, since the mounting hardware has a function as a ruler when mounting the heat insulating plate or the outer wall panel, it is preferable that the mounting hardware has a shape that can easily exhibit this function. Moreover, when attaching an outer wall panel via a heat insulation board, the tensile force which acts when fastening the volt | bolt provided in the outer wall panel acts as a compressive force with respect to a heat insulation board. For this reason, it is necessary to have a size that can contact the heat insulating plate with an area that does not exceed the allowable compressive stress of the heat insulating plate.

  As the mounting hardware capable of exhibiting the functions as described above, a steel material having an L-shaped cross section is used, one of the L-shaped pieces is fixed to the lower flange of the beam, and the other is taken from the lower flange. It is preferable to function as a vertically hanging attachment piece and to function as a ruler for attaching the heat insulating plate and the outer wall panel.

  When attaching an outer wall panel to the mounting hardware through a heat insulating plate, a hole is formed in the mounting hardware in advance, and a bolt provided on the outer wall panel is inserted into the hole and a nut is fastened. Is possible. In this case, it is necessary to strictly manage the accuracy of the hole position. For this reason, a mounting plate in which a hole for inserting a bolt is prepared in advance, a bolt provided on the outer wall panel is inserted into the hole and a nut is fastened, whereby a mounting piece is formed by the heat insulating plate and the mounting plate. It is preferable to sandwich the heat insulating plate and the outer wall panel.

  Similarly, the shape and structure of the support hardware are not particularly limited. Since this support metal also has a function as a ruler when attaching the heat insulating plate and the outer wall panel in the same manner as the attachment metal, it is preferable that the support metal has a shape that can easily exhibit this function. For example, a steel material with a T-shaped cross section is used in a convex shape, the upright piece functions as a ruler when attaching a heat insulating plate and an outer wall panel, and one of the bottom pieces functions as a fixed piece for fixing to the upper surface of the foundation or the upper flange of the beam The other piece is preferably made to function as a support piece for supporting its own weight by placing the heat insulating plate and the outer wall panel.

  Furthermore, using an L-shaped steel material, one piece is made to function as a fixed piece for fixing to the upper surface of the foundation or the upper flange of the beam, and the other piece is made to stand and function as a ruler piece. It is also possible to attach a self-weight receiving metal formed on the mold and mount and support the heat insulating plate and the outer wall panel on the self-weight receiving metal.

  In the case of using the support metal or the self-weight receiving metal as described above, the heat insulating plate and the outer wall panel may simply keep the state of being placed on the support piece and the self-weight receiving metal, and the bolt and the mounting plate provided on the outer wall panel. You may make it attach to the standing piece of a support metal piece, or a ruler piece.

  As the outer wall panel attached to the casing, it is preferable to use a lightweight cellular concrete (ALC) panel or a precast concrete (PC) panel. In these panels, the panel itself has a sufficiently high heat insulation performance, and it is possible to improve the heat insulation efficiency of the building.

  The bolt provided on the outer wall panel may be screwed into a nut embedded in the outer wall panel in advance, and from the end in the longitudinal direction of the outer wall panel to the site where the bolt should be installed, from the side to the center. And forming a hole in the thickness direction from the back surface side to the front surface side, inserting an O portion of an O bolt having one end formed in an O-shape into the hole in the thickness direction, and a side surface Alternatively, a steel bar inserted through the O part of the O bolt may be inserted into the hole formed from the center to the center so that the steel bar penetrates the O part. All of these bolts are mounted on a normal ALC panel, and one end protrudes from the indoor side surface of the outer wall panel, while the other end protrudes from the outdoor side surface. However, there is no risk of functioning as an active thermal bridge. In addition, the support hardware that supports the lower end of the outer wall panel and the heat insulating plate is usually covered with a sealing material applied between the upper and lower outer wall panels, but by inserting an elastic heat insulating material as a backer material of the sealing material, It is possible to prevent the support hardware from becoming a thermal bridge.

  When the outer wall panel is arranged at the upper and lower parts of the window or at the upper part of the door, it is not always necessary to use the bolt described above when attaching the outer wall panel to the casing. It is also possible to attach the heat-insulating plate to the attached metal fitting and to make the outer wall panel face the heat-insulating plate and pass the tapping screw from the outdoor side surface of the outer wall panel and fasten it to the fitting. In this case, since the tapping screw serves as a thermal bridge, it is preferable to fill the counterbored hole with a heat insulating material after the head of the tapping screw is inserted into the counterbored hole formed in the outer wall panel in advance.

  Any heat insulating plate can be used if it is plate-shaped. However, when attached to the housing, it is preferably sandwiched between the mounting hardware and the outer wall panel and pressed, so that it preferably has a sufficiently high compressive strength. Examples of such a heat insulating plate include a phenol resin foam, a polystyrene (PS) foam, and a rigid urethane foam, which can be selectively used.

  In particular, as a phenolic resin foam which can be preferably used as a heat insulating plate, there is an international patent application (Japanese Patent Application No. 2000-558158) developed by the present applicant (Neoma Foam (registered trademark)). This phenol resin foam is a phenol foam having a density of 10 kg / m 3 to 100 kg / m 3 having a phenol resin base portion and a bubble portion formed from a large number of fine bubbles, and the fine bubbles contain hydrocarbons. In addition, the average cell diameter is in the range of 5 μm to 200 μm, and the cell walls of most of the fine cells are constituted by a smooth phenol resin substrate surface. Despite the fact that the foaming agent is a hydrocarbon, it has a thermal conductivity comparable to that of conventional chlorofluorocarbon foaming agents, and there is no change over time in the thermoelectric coefficient, resulting in a mechanical strength such as compressive strength. Excellent and brittleness is improved.

  The heat insulation board which consists of the said phenol resin foam has a high heat insulation, and has the property which can maintain heat insulation and a dimension for a long period of time. The heat insulation property of the phenol resin foam can be ensured by keeping the closed cell ratio as high as 80% or more. Moreover, the phenol resin foam has high combustion resistance, and when the flame acts, it does not ignite because the surface is carbonized.

  For example, when the density of the phenol resin foam is set to 27 kg / m 3, the thermal conductivity at 20 ° C. is 0.020 W / m · K, the compressive strength is 15 N / cm 2, and the thermal deformation temperature is 200. ° C. The performance of such a phenolic resin foam is that three types of extruded polystyrene foam have a thermal conductivity of 0.028 W / m · K, a compressive strength of 20 N / cm 2, a heat distortion temperature of 80 ° C., and a rigid urethane foam. Two types have sufficiently high performance as compared with thermal conductivity: 0.024 W / m · K, compressive strength: 8 N / cm 2, heat distortion temperature: 100 ° C. For this reason, a heat insulating plate made of a phenol resin foam can exhibit substantially the same heat insulating performance with a thickness of about 2/3 that of conventional extruded polystyrene foam or rigid urethane foam.

  The thickness of the heat insulating plate is set at the manufacturing stage, and the width and length are cut to desired values. That is, the thickness of the heat insulating plate is appropriately set according to the portion to be applied, and the width is set in accordance with the module size set for the building to be applied. The length of the heat insulating plate is also set in accordance with the required length, for example, the height of one layer according to the part to be applied.

  Therefore, the length of the heat insulating plate is cut in advance so as to correspond to the height of one layer, thereby facilitating the work and reducing the length of the part to be airtightly processed when performing the mounting work on the housing. This is preferable. In particular, since the phenol resin foam has high compressive strength, it can sufficiently retain the shape as a heat insulating plate even when attached at a height of one layer, and is disposed on the front and back surfaces. Thus, the nonwoven fabric integrated with the foam functions as a resistance member against bending, shearing, or tension, and it is possible to realize a thermally and highly reliable heat insulating structure.

  Phenolic resin foam has higher compressive strength than other foams, but is smaller than metal, so when bolting the outer wall panel through the thickness direction of the heat insulation plate and fastening it, High compression force acts. For this reason, it is preferable to provide a reinforcing member that resists the compressive force. This reinforcing member is configured as a sleeve-like member having a length substantially equal to the thickness of the heat insulating plate, and can function by inserting the sleeve into a bolt hole provided in the heat insulating plate.

  In particular, when the heat insulating plate and the outer wall panel are configured to be mounted on the mounting hardware using the mounting plate, the reinforcing member is formed into a shape in which the reinforcing plate and the sleeve that engage with the end of the mounting plate are integrated. The force acting on the heat insulating plate via the mounting plate can be dispersed by the reinforcing plate and can be advantageously reinforced by the sleeve. Such a reinforcing member may be made of metal, but is preferably made of synthetic resin in consideration of heat conduction.

  Next, a preferred embodiment of the mounting structure will be described with reference to the drawings. FIG. 1 is a view showing a cross section of a building that realizes an externally bonded heat insulating construction method. FIG. 2 is a diagram illustrating a structure for supporting the lower end portion of the outer wall panel. FIG. 3 is a view for explaining an attachment structure for attaching the upper end side of the outer wall panel to the housing. FIG. 4 is a diagram illustrating the configuration of the reinforcing member.

  First, the schematic structure of the externally bonded heat insulating construction method will be described with reference to FIG. In the figure, a steel frame structure constituting a building includes a column (not shown) and a beam 1 which is arranged at a predetermined position and whose end is fixed to the column. The beam 1 is made of an H-shaped steel having an upper flange 1a and a lower flange 1b. The reason for the beam 1 and the widths of the flanges 1a and 1b are set in advance at the design stage. A roof panel 2 is arranged on the upper flange 1a of the beam 1 arranged at the top and is attached with a predetermined structure, and a floor panel 4 is attached to the upper flange 1a of the upper part of the foundation 3 and the beam 1 in the middle layer. And are attached with a predetermined structure. The roof panel 2 and the floor panel 4 are each composed of an ALC panel.

  A heat insulating plate 5 made of a phenol resin foam and having a length substantially equal to that of the outer wall panel 6 is arranged on the outdoor side surface of the beam 1 arranged outside the building, and the outdoor side surface of the heat insulating plate 5 The outer wall panel 6 made of an ALC panel is disposed on the beam 1 and the heat insulating plate 5 and the outer wall panel 6 are attached to the beam 1 with a lower end side having a structure shown in FIG. 2 described later and an upper end side having a structure shown in FIG. ing.

  A heat insulating material 7 made of phenol resin foam or polystyrene foam is installed on the upper surface of the floor panel 4 on the first floor, and the end of the heat insulating material 7 is continuous with the heat insulating plate 5 arranged along the outer wall panel 6. ing. Further, a heat insulating material 8 selected from phenol resin foam, polystyrene foam, rigid urethane foam or the like is installed on the upper surface of the roof panel 2, and the end of the heat insulating material 8 is continuous with the heat insulating plate 5. . Therefore, the heat insulating materials 7 and 8 and the heat insulating plate 5 are installed along the upper surface of the roof panel 2 of the building, the upper surface of the floor panel 4, and the indoor side surface of the outer wall panel 6, thereby forming a continuous heat insulating line.

  In FIG. 1, reference numeral 9 denotes a base panel serving as a base structure for the inner wall, and reference numeral 10 denotes a ceiling. Reference numeral 11 denotes a mortar filled in a gap formed between the end of the roof panel 2 and the floor panel 4 and the heat insulating plate 5.

  Next, the structure which attaches the heat insulation board 5 and the outer wall panel 6 to a housing | casing with FIG. 2, FIG. 3 is demonstrated. FIG. 2 shows a structure for supporting the lower end of the heat insulating plate 5 and the outer wall panel 6 arranged on the upper floor than the second floor. However, even the first-floor heat insulating plate 5 and the outer wall panel 6 arranged on the upper surface of the foundation 3 can be attached with the same structure. Moreover, FIG. 3 has shown the structure which attaches the upper end side of the heat insulation board 5 and the outer wall panel 6 arrange | positioned in each hierarchy to a housing.

  A support hardware 15 is disposed and fixed to the upper flange 1a of the beam 1 disposed on the outer periphery of the building. The support metal 15 is made of a heat-insulating plate 5 and a lower end of the outer wall panel 6 that are placed on the lower end of the outer wall panel 6 so as to support the weight. It is configured as a long or piece-like hardware having a cross-sectional shape formed in a crank shape having a mounting piece 15b to be attached and a fixing piece 15c for fixing the support metal 15 to the upper flange 1a of the beam 1. Has been. Note that the shape of the support hardware is not necessarily limited to that shown in the drawing, and the cross section may be formed in a T shape.

  The support metal 15 is fixed to the upper flange 1a after placing the fixing piece 15c on the upper flange 1a of the beam 1 and confirming the way of the attachment piece 15b. When fixed to the upper flange 1a of the fixed piece 15c, welding may be performed, but in the present embodiment, the fixed piece 15c is fixed by a bolt 17a and a nut 17b.

  An attachment hardware 20 is disposed and fixed to the lower flange 1b of the beam 1. The mounting hardware 20 includes a fixing piece 20a fixed to the lower flange 1b of the beam 1, a bolt 16a having the heat insulating plate 5 and the outer wall panel 6 provided on the outer wall panel 6, passing through the heat insulating plate 5, and fastening a nut 16b. The cross section having the mounting piece 20b attached in this way is configured as an L-shaped long or piece-shaped hardware. Then, one end of the mounting plate 21 is engaged with the mounting piece 20b, and a bolt 16a provided on the outer wall panel 6 is inserted into the mounting plate 21 to fasten the nut 16b, whereby the heat insulating plate 5 and the outer wall panel 6 are attached to the mounting hardware. 20 to be attached. For this reason, the mounting hardware 20 is fixed by welding the fixing piece 20a to the lower flange 1b in such a state that the fixing piece 20a is brought into contact with the lower flange 1b of the beam 1 to check the way of the mounting piece 20b. .

For example, it is possible to attach the heat insulating plate 5 disposed so as to face the mounting hardware 20 by fastening bolts 16a and nuts 26b provided on the outer wall panel 6 in direct contact with the mounting piece 20b. In this case, the tensile force acting on the bolt 16 a accompanying the fastening of the nut 16 b acts as a compressive force on the heat insulating plate 5. For this reason, high compressive stress arises in the heat insulation board 5 which contacts the attachment piece 20b, and there exists a possibility that this heat insulation board 5 may be partially crushed or damaged. For this reason, it is necessary to set the surface area of the mounting piece 20b large so that the compressive stress generated in the heat insulating plate 5 is not more than the compressive strength (for example, 15 N / cm ² ).

  Further, in this embodiment, one end 21a of the mounting plate 21 is engaged with the mounting piece 20b of the mounting hardware 20, and the other end 21b is brought into contact with the surface of the heat insulating plate 5 so that the nut 16b is attached to the bolt 16a. The heat insulation board 5 and the outer wall panel 6 are attached by fastening. At this time, the tensile force acting on the bolt 16a acts as a compressive force on the heat insulating plate 5 via the end portion 21b of the mounting plate 21, and the compressive force may cause the heat insulating plate 7 to be crushed or partially broken. There is.

  For this reason, it is preferable to insert the reinforcing member 22 shown in FIG. 4 into the bolt hole 5 a formed in the heat insulating plate 5. The reinforcing member 22 includes a sleeve 22a having a diameter through which the bolt 16a can be inserted, and a plate 22b formed integrally with the sleeve 22a. The sleeve 22a has a tensile force acting on the bolt 16a. The plate 22b has a function of dispersing the tensile force acting on the bolt 16a and transmitting it to the heat insulating plate 5. The reinforcing member 22 may be made of metal, but is preferably made of synthetic resin in order to avoid a thermal bridge.

  The outer wall panel 6 is formed without any special change from a normal outer wall panel, and has a predetermined position on the lower end side (a position facing the mounting piece 15b of the support hardware 15) and a predetermined position on the upper end side (the mounting piece of the mounting hardware 20). Bolts 16a are respectively provided at positions where the mounting plate 21 should be mounted below 20b. The length of the bolt 16a is a dimension that can penetrate the heat insulating plate 5 in the thickness direction and reach the mounting plate 21 that engages with the mounting piece 15b or the mounting hardware 20 of the support metal 15 and further fastens the nut 16b. It is necessary.

  The heat insulating plate 5 has a thickness of about 40 mm and is formed in a panel shape having the same length and width as the outer wall panel 6. Holes 5a through which the bolts 16a are inserted are formed at predetermined positions on the lower end side and the upper end side corresponding to the installation positions of the bolts 16a provided in the outer wall panel 6 in the heat insulating plate 5 in advance.

  Next, a procedure for attaching the heat insulating plate 5 and the outer wall panel 6 to the support metal 15 and the attachment metal 20 configured as described above will be described. First, as described above, the support metal 15 is fixed to the upper flange 1a of the beam 1 and the upper surface of the foundation 3, and the mounting metal 20 is fixed to the lower flange 1b.

  Next, the lower end of the heat insulating plate 5 is placed on the placement piece 15a of the support metal 15 and the bolt hole 5a is opposed to the attachment piece 15b, and in this state, for example, the attachment piece 15b of the support metal 15 is provided by double-sided tape or the like. , Temporarily fixed to the mounting piece 20b of the mounting hardware 20.

  The spacers 18 are inserted into the bolts 16 a provided on the outer wall panel 6. In this state, the bolts 16 a are inserted into the bolt holes 5 a of the heat insulating plate 5 and the lower ends are mounted on the mounting pieces 15 a of the support hardware 15. Next, the nut 16 b is screwed into the bolt 16 a inserted through the mounting piece 15 b of the support metal 15. Further, the sleeve 22a of the reinforcing member 22 is inserted into the bolt 16a protruding in the vicinity of the mounting hardware 20, and is pushed into the bolt hole 5a provided in the heat insulating plate 5, so that the plate 22b is brought into contact with the indoor surface of the heat insulating plate 5. Further, the mounting plate 21 is inserted into the bolt 16a and the nut 16b is screwed. At this time, it is necessary to confirm that the end 21a of the mounting plate 21 is securely engaged with the mounting piece 20b of the mounting hardware 20.

  After the nuts 16b are screwed onto the bolts 16a as described above, the nuts 16b are fastened with respective preset torques so that the heat insulating plate 5 is sandwiched between the mounting hardware 20 and the supporting hardware 15. It is possible to attach the outer wall panel 6 in a state.

  Since both the heat insulating plate 5 and the outer wall panel 6 attached as described above have the same length, they are attached between the upper surface of the foundation 3 and the lower surface of the roof panel 2. That is, it is possible to realize an externally bonded heat insulating construction method in which the heat insulating plate 5 is bonded along the surface on the outdoor side of the steel frame.

  In particular, since the spacers 18 are disposed between the heat insulating plate 5 and the outer wall panel 6 in a state where the spacers 18 are disposed on the housing, the space between the heat insulating plate 5 and the outer wall panel 6 corresponds to the thickness of the spacer 18. A gap is formed, and this gap can exhibit a function as a ventilation layer.

  Further, as described above, the outer wall panel 6 can be rotated around the bolt 16a by attaching the outer wall panel 6 to the housing using the bolts 16a provided at two places in the longitudinal direction. The outer wall formed by attaching the outer wall panel 6 has a function as an unstructured book wall. Further, when the horizontal force is applied to the housing and the vertically arranged beams 2 are moved horizontally in different directions, the outer wall panel 6 is so-called locked and rotated with the bolt 16a as a center. It will not be done.

  FIG. 5 is a view for explaining the configuration of the second embodiment in which the heat insulating plate and the outer wall panel are attached to the mounting hardware. In the figure, the same parts as those in the first embodiment and the parts having the same functions are denoted by the same reference numerals and the description thereof is omitted.

  In the figure, a bolt hole 26a for inserting a bolt 25 is formed through the thickness direction at a position facing the mounting piece 20b of the mounting hardware 20 fixed to the lower flange 1b of the beam 1 of the outer wall panel 6. Has been. A counterbore hole 26b having a depth sufficient to fit the head 25a of the bolt 25 is formed on the surface side of the outer wall panel 6 in the bolt hole 26a.

  The bolts 25 are arranged from a counterbore hole 26b formed in the outer wall panel 6 through the bolt hole 26a, the bolt hole 5a of the heat insulating plate 5, and the mounting piece 20b of the mounting hardware 20, and the nut 27 is fastened. Even with this structure, it is possible to attach the outer wall panel 6 with the heat insulating plate 5 sandwiched between the mounting hardware 20.

  In the present embodiment, when the outer wall panel 6 is attached to the mounting hardware 20, the bolt 26 becomes a thermal bridge, and therefore it is possible to improve the heat insulating performance by filling the counterbore hole 26b with a heat insulating material.

  For example, the outer wall panel arranged on the upper part of the opening such as a window or door formed on the outer wall has a small length (vertical dimension), and depending on the structure of the opening, the casing without the above-mentioned support hardware May need to be attached to. In such a case, a tapping screw is used in place of the bolt 26 of the second embodiment shown in FIG. 5, and the tapping screw is directed from the outdoor side surface of the outer wall panel to the mounting piece of the mounting hardware fixed to the lower flange of the beam. It is possible to attach an outer wall panel in the state which pinched | interposed the heat insulation board with respect to the attachment metal fitting. Even in this case, it is necessary to fit the head portion of the tapping screw into the outer wall panel and to fill the fitting portion with the heat insulating material.

  By adopting the heat insulating material mounting structure according to the present invention, it is possible to realize a heat insulating outer heat insulating construction method, and it is possible to realize a house having a steel frame with high thermal efficiency with good workability.

It is a figure which shows the cross section of the building which implement | achieved the external sticking heat insulation construction method. It is a figure explaining the structure which supports the lower end part of an outer wall panel. It is a figure explaining the attachment structure which attaches the upper end side of an outer wall panel to a housing. It is a figure explaining the structure of a reinforcement member. It is a figure explaining the structure of the 2nd Example which attaches a heat insulating board and an outer wall panel to an attachment metal fitting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Beam 1a Upper flange 1b Lower flange 2 Roof panel 3 Foundation 4 Floor panel 5 Thermal insulation board 5a Bolt hole 6 Outer wall panel 7,8 Thermal insulation material 9 Ground panel 10 Ceiling 11 Mortar 15 Support metal 15a Mounting piece 15b Mounting piece 15c Fixed piece 16a, 17a Bolt 16b, 17b Nut 18 Spacer 20 Mounting hardware 20a Fixed piece 20b Mounting piece 21 Mounting plate 21a, 21b End 22 Reinforcing member 22a Sleeve 22b Plate 25 Bolt 25a Head 26a Bolt hole 26b Counterbore 27 Nut

Claims (4)

A long or piece-like hardware is attached to a steel beam constituting the steel frame, and a plate-like heat insulating material is opposed to the hardware, and an outer wall panel is placed along the surface on the outdoor side of the plate-like heat insulating material, Bolts are fastened between the outer wall panel and the hardware or between the hardware and the heat-insulating material and the mounting plate overlapping from the indoor side, and the outer wall panel and the hardware or the outer wall panel and the mounting plate are joined via the bolt fastening. In the mounting structure of the heat insulating material sandwiching the heat insulating material, a bolt hole for inserting a bolt is formed in the plate-shaped heat insulating material, and a reinforcing member is provided at a position facing the hardware or the mounting plate. The reinforcing member is attached and includes a sleeve that fits into the bolt hole with a diameter through which the bolt can be inserted, and a plate that is formed integrally with the sleeve. Has a buckling resistance ability can against the tensile force acting on the bolt, the plate is characterized by being configured to transmit to said plate-like insulation material and distribute the tensile force acting on the bolt Insulation mounting structure. The heat insulating material mounting structure according to claim 1 , wherein the reinforcing member is made of synthetic resin. The heat insulating material mounting structure according to claim 1 , wherein a spacer is provided between the heat insulating material and the outer wall panel in a state of being inserted through the bolt. The bolt holes are formed at two locations, the upper end portion and the lower end portion, which are the longitudinal direction of the heat insulating material, and the outer wall panel is arranged at the upper end portion and the lower end which are the longitudinal direction via bolts inserted through the respective bolt holes. The mounting structure for a heat insulating material according to any one of claims 1 to 3 , wherein two portions of the portion are supported by a hardware or a mounting plate.

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