JP4089103B2 - Dome roof and its construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dome roof that covers an upper part of a structure such as a storage tank for storing various stored items such as liquids such as water and petroleum, low-temperature liquefied gas, digestion gas, powder, and granular materials, and a method for constructing the same.
[0002]
[Prior art]
A conventional dome roof 102 covering the upper part of a structure such as a storage tank will be described based on a longitudinal sectional view of the storage tank 101 shown in FIG. 4 as an example. The storage tank 101 is formed of a flat bottom circular bottom plate 103, a cylindrical side wall 104 standing near the outer periphery of the bottom plate 103, and a blast-shell-shaped dome roof 102 covering the top of the side wall 104. Yes. The bottom plate 103, the side wall 104, and the dome roof 102 are formed by a concrete structure or a metal structure, or a combination of a concrete structure and a metal structure.
[0003]
As a construction method for constructing the dome roof 102, as shown in FIG. 4, the peripheral edge of the flexible film body 105 covering the upper portion of the storage tank 101 is airtightly fixed to the upper end portion of the side wall 104, and the blower 106 is used. Then, there is a method of introducing air into the lower part of the flexible film body 105 and making it tense, and constructing the roof member 107 on the upper part of the tense flexible film body 105, that is, a construction method constructed by an air dome method. The flexible film body 105 is made of a flexible film material obtained by coating a fiber fabric with a resin material or the like.
[0004]
In the case of a concrete dome roof 102A constructed by the air dome construction method, a mortar and a reinforced concrete are placed on the upper surface of the flexible film body 105 in a state of being tensed into a dome shape of a blastomer shell. The roof member 107A is cast and formed into a dome shape of a blastomer shell, and, in the case of a metal dome roof 102B, on the flexible film body 105 that is strained into a dome shape of a substantially split sphere shell. The roof member 107B made of a metal aggregate and a plate material is disposed to form a dome shape having a substantially blastomer shell.
[0005]
[Problems to be solved by the invention]
In the case of the concrete dome roof 102A among the conventional dome roofs 102, since the wall thickness of the concrete roof member 107A is thick and heavy, the upper end of the side wall 104 supporting the dome roof 102A is On a large scale, the wall thickness of the side wall 104 has also increased. When the concrete dome roof 102A is constructed by the above air dome construction method, when a partial load is applied to the flexible film body 105 that is tensioned by receiving air pressure, it is locally recessed and becomes an uneven shape. There was a risk of becoming. Therefore, in order to prevent local deformation and to support a large load, it is necessary to increase the air pressure, and it is difficult to construct a large structure.
[0006]
In addition, since the metal dome roof 102B among the conventional dome roofs 102 has a welded structure, when welding the metal aggregate and the plate roof member 107B, welding sparks and heat There is a concern that the flexible film body 105 may be damaged.
[0007]
The present invention has been made in view of the above-described problems of the prior art, and provides a dome roof having a light weight, a simple structure, and a high strength, and is easy and easy to assemble and constructed in a short period of time with high work efficiency. It is intended to provide a method for constructing a dome roof.
[0008]
[Means for Solving the Problems]
The dome roof according to the present invention is a dome roof that covers an upper part of a structure such as a storage tank, and the dome roof includes an innermost flexible film body fixed to an upper end of a side wall of the structure such as a storage tank, and the flexible film. A honeycomb core coated and fixed on the upper surface of the body, and a connecting surface material coated and fixed on the upper surface of the honeycomb core.
[0009]
Further, the construction method of the dome roof according to the present invention is a construction method of the dome roof that covers the upper part of the structure such as a storage tank, and the innermost flexible structure that forms the dome roof at the upper end of the side wall of the structure such as the storage tank. The peripheral edge of the film body is fixed, air is introduced into the lower part of the flexible film body to be tensioned, the honeycomb core is spread and fixed on the tensioned flexible film body, and a connecting surface material is arranged on the upper surface of the honeycomb core. It is constructed by installing and fixing, or by arranging and fixing a honeycomb core coated and fixed with a connecting face material on the tensioned flexible film body.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Based on FIG. 1 thru | or FIG. 3, the example of embodiment of the dome roof which concerns on this invention, and its construction method is demonstrated.
[0011]
As illustrated in FIG. 1, the storage tank 1 includes a flat bottom circular bottom plate 3, a cylindrical side wall 4 standing upright in the vicinity of the outer peripheral edge of the bottom plate 3, and a blastomer shell-shaped dome covering the top of the side wall 4. It is formed from the roof 2. The dome roof 2 includes an innermost flexible film body 5 hermetically fixed to the upper end of the side wall 4, a honeycomb core 7 coated and fixed on the upper surface of the flexible film body 5, and an upper surface of the honeycomb core 7. It is formed from the connecting face material 8 which is covered and fixed to the surface.
[0012]
As shown in FIG. 1, the dome roof 2 having the blastomer shell shape is constructed by an air dome construction method using an air film. The flexible film body 5 is tensed by the air pressure, and the honeycomb core 7 and the connecting surface material 8 are disposed and fixed on the top surface of the tensed flexible film body 5.
[0013]
The flexible film body 5 as a member forming the dome roof 2 is made of a film material obtained by coating a fiber fabric with a resin material or the like, for example, a fiber fabric such as glass fiber, polyamide fiber, or polyester fiber. This is a flexible film material coated with a resin material such as resin, vinyl chloride resin, chloroprene rubber, or fluororesin. This flexible membrane body 5 has corrosion resistance and durability against the contents to be stored, and covers and protects the roof inner wall surface.
[0014]
The honeycomb core 7 which is a member forming the dome roof 2 is a structure made up of a large number of hollow columnar bodies, for example, and is a honeycomb-like aggregate. The honeycomb core 7 is formed using, for example, a plastic material such as polypropylene resin, a paper material such as kraft paper, or a metal material such as an aluminum material.
[0015]
The honeycomb core 7 to be a hollow columnar assembly is manufactured by using a thin plate material such as a foil made of the above material, and applying an adhesive in a parallel straight line at a predetermined interval on the upper surface of the thin plate material, Overlay the next thin plate material on it, apply the adhesive on the upper surface by shifting it by a predetermined distance, and then repeatedly press the next thin plate material to form a block body, and this block body to a predetermined width This is done by cutting and unfolding this cut piece. The honeycomb core 7 manufactured in this manner is lightweight, excellent in compressive strength and shear strength by integrally forming a connecting plate material or the like on the upper and lower surfaces of the hollow columnar aggregate, and has a hollow body. It becomes a member excellent in heat insulation performance by the air layer effect.
[0016]
The connecting surface material 8 located on the outermost side forming the dome roof 2 is a material having light shielding properties, weather resistance, etc., for example, a plastic material such as a polyester resin, a synthetic resin material such as a fiber reinforced plastic material, or a steel material. Further, a thin metal plate such as an aluminum material, a stainless steel material, or a titanium alloy material, or a plate material such as a mortar structure or a concrete structure.
[0017]
Moreover, between each member which forms the said dome roof 2, ie, between the flexible film body 5 and the honeycomb core 7, and between the honeycomb core 7 and the connection surface material 8, for example, a phenol type, an epoxy type In addition, an adhesive such as rubber or a sealing member having adhesiveness is provided to firmly fix the gas tightly, liquid tightly and firmly.
[0018]
As described above, the dome roof 2 formed by firmly and firmly bonding the flexible film body 5, the honeycomb core 7, and the connecting face material 8 with an adhesive or the like is lightweight, high-strength, and excellent in durability. It becomes the dome roof 2.
[0019]
In addition, since the honeycomb core 7 has a hollow body structure and excellent heat insulation properties, it is a low-temperature storage tank that requires heat insulation, a heat insulation storage tank, or a structure that needs to shut off the environment inside and outside so as not to be affected by the outside air temperature. Also suitable for the dome roof 2 of.
[0020]
Although not shown, in order to further strengthen the integration of the flexible membrane body with the honeycomb core and the connecting face material, a connection member such as a tab or an anchor pin is fixed to the upper surface of the flexible membrane body. The connecting member may be formed so as to be bonded to the honeycomb core and the connecting surface material by binding or embedding. This connecting member is also suitable as an engaging member for positioning, temporarily fixing, or mounting when the honeycomb core is fixed to the upper surface of the flexible film body.
[0021]
In addition, although not shown, when a roofing reinforcing member, for example, a molding material having a cross-sectional L shape, a rectangular shape, or a U shape made of a metal material, FRP material, or the like, is used in combination with a honeycomb core, It has the role of an aggregate and can further improve rigidity.
[0022]
When the connecting surface material 8 is formed on the synthetic resin dome roof 2 using a synthetic resin material having heat resistance, weather resistance, etc., for example, a synthetic resin material such as a polyester resin or a fiber reinforced plastic material. The lightweight and highly rigid honeycomb core 7 and the synthetic resin connecting face material 8 formed on the upper surface of the honeycomb core 7 are integrated with each other, so that a lightweight and high-strength structure is obtained. The honeycomb core 7 has heat insulation properties, and the synthetic resin connecting face material 8 has weather resistance and the like, so that the influence of the water tank or the outside air that requires heat insulation performance and weather resistance is blocked. It becomes a structure suitable for the synthetic resin dome roof 2 of a structure such as a storage tank.
[0023]
Further, when the connecting face material 8 is formed on a metal dome roof 2 using a metal material such as steel or aluminum, for example, the lightweight and highly rigid honeycomb core 7 is coated on the upper surface thereof. The metal connection face material 8 that is fixedly formed is integrated to form a high-strength structure. And since it is not necessary to provide a strong and large roof bone like the conventional metal dome roof, it becomes a metal dome roof excellent in economy. Further, since the honeycomb core 7 has heat insulation properties and the metal connecting face material 8 has non-flammability, fire resistance, etc., the low temperature storage tank, the heat insulation storage tank, or the outside air temperature that requires heat insulation performance, fire resistance, etc. It becomes a structure suitable for the metal dome roof 2 of a structure such as a storage tank that blocks the influence of the above.
[0024]
Furthermore, when the connecting face material 8 is formed on a concrete dome roof 2 using, for example, a plate material such as a mortar structure or a concrete structure, the honeycomb core 7 is lightweight and highly rigid. The connecting surface material 8 made of concrete, which is covered and fixed on the upper surface thereof, is integrated into the dome roof 2 made of high-strength concrete. The honeycomb core 7 has a heat insulating property, and the connecting face material 8 made of concrete has a heat resistance, a weather resistance, and the like. It becomes a structure suitable for the dome roof 2 made of concrete of a structure such as a storage tank that blocks the water.
[0025]
FIG. 2 is a partial cross-sectional explanatory view showing the construction method of the dome roof 2, and the construction procedure of the construction method of the dome roof 2 will be described based on FIG. 2.
[0026]
As shown in FIG. 2, an adhesive 9 is applied to the upper surface of the flexible film body 5 that is tensioned by air pressure. Before the adhesive 9 is cured, the honeycomb core 7 in a compressed state is placed on the adhesive 9 while being unfolded, and is placed on the upper surface of the flexible film body 5. To fix. Next, a plate-like connecting face material 8 is disposed and fixed on the upper surface of the honeycomb core 7. Note that an adhesive 10 is applied to the back surface of the connecting surface material 8, and the connecting surface material 8 is brought into contact with the upper surface of the honeycomb core 7 before the adhesive 10 is cured, so that an appropriate pressing force is applied. Add and bond firmly.
[0027]
The adhesive 9 to be applied to the upper surface of the flexible film body 5 and the adhesive 10 to be applied to the back surface of the connecting surface material 8 are, for example, phenol-based, epoxy-based, rubber-based adhesives, or welding-type adhesives. Therefore, an adhesive having an excellent bondability suitable for each material of the flexible film body 5 and the honeycomb core 7 and between the honeycomb core 7 and the connecting face material 8 is selected.
[0028]
In the construction method of the dome roof 2 to be constructed on the flexible film body 5, the scaffold and the construction position can be safely constructed on the flexible film body 5. Further, when the honeycomb core 7 is spread, the honeycomb core 7 is lightweight, so that the flexible film body 5 is not locally recessed by weight and load. And the operation | work which arrange | positions the light thin-plate-like connection surface material 8 on the upper surface of the honeycomb core 7 is also easy to do. Further, since the weight and load of the entire dome roof 2 are not large, it is easy to construct a dome roof of a large structure. Furthermore, it becomes possible to reduce the air pressure that tensions the flexible membrane body 5, and the blower equipment can be reduced.
[0029]
Moreover, since the honeycomb core 7 used for the construction is transported in a compressed and folded state, the honeycomb core 7 is not bulky during transportation and is light in weight, so it is easy to transport and does not cost transportation. Further, when the construction is performed on the flexible film body 5, the lightweight honeycomb core 7 in the folded state is easy to handle, so that the efficiency of the spreading work is improved.
[0030]
Furthermore, since the honeycomb core 7 can be easily spread along the surface of the flexible film body 5 having a blastomer shell shape during the installation and can be brought into close contact with the shape, the shape of the upper surface and the lower surface is not necessarily limited. There is no need to form the blastomer shell so that the blastomer shell is placed on the flexible membrane 5 as it is. The honeycomb core 7 is not limited to being constructed while being transported and deployed in a folded state, and is unfolded in a factory or the like in advance, so that the expanded honeycomb core 7 can be easily transported, packaged, and easily handled. It may be formed by temporary fixing or the like so as to be easily arranged.
[0031]
FIG. 3 is a partial cross-sectional explanatory view showing a method of constructing a dome roof using the honeycomb core 7 having the connecting face material 8 covered and fixed on the upper surface, and the construction procedure will be described based on FIG.
[0032]
This honeycomb core 7 is synthesized by adhering a connecting face material 8 curved in advance according to the curvature of the dome roof to the upper surface of the expanded honeycomb core 7 in advance in the vicinity of the site of the factory or storage tank, etc., with an adhesive 11. It is formed in a panel structure. Note that the bottom surface of the honeycomb core 7 is not provided with a hard connecting surface material that restricts the shape, and can be deformed so as to follow the curved surface of the blastomer shell shape of the flexible film body 5. Keep it.
[0033]
As shown in FIG. 3, the adhesive 9 was applied to the upper surface of the flexible film body 5 that had been tensed into a blastomer shell, and the composite panel structure was formed on the adhesive 9 before being cured. The honeycomb core 7 with the connecting face material 8 is placed and fixed by applying an appropriate pressing force from above the connecting face material 8. In this construction, the lower surface of the honeycomb core 7 freely follows and deforms with respect to the curved surface of the blastomer shell shape of the flexible film body 5 and hardens by tightly adhering to each other. Will improve.
[0034]
The connection between the honeycomb cores 7 of the composite panel structure is not shown in the figure, but, for example, an adhesive having a strong adhesive force, a sealing material for filling a gap, and elasticity are provided on the outer peripheral surfaces of the honeycomb cores 7 facing each other. A packing material or the like is provided so as to be in close contact with each other, and the end edges of the upper connecting surface members 8 are connected by a method using adhesion or a connecting member. Alternatively, a connecting opening frame is provided in the vicinity of the peripheral edge of the honeycomb core 7, a connecting member such as a bolt and nut is provided in the connecting opening frame, and the connecting member provided in the connecting opening frame is used for the honeycomb. The cores 7 may be connected to each other.
[0035]
As described above, the honeycomb core 7 formed by integrally covering the upper surface of the honeycomb core 7 with the connecting face material 8 formed into a composite panel structure is efficiently standardized and standardized in advance in a factory or the like. It can be manufactured easily and easily. In addition, since the honeycomb core 7 has a synthetic panel structure, the arrangement and connection work on the flexible film body 5 can be easily performed, and the honeycomb core 7 can be easily and easily installed in a short time with high work efficiency.
[0036]
Although not shown in the figure, a surface panel is fixed to both the upper and lower surfaces of the honeycomb core, an edge material is embedded in the side portion of the honeycomb core, and a dome shape of the blastomer shell is formed into a honeycomb panel having a curvature. In this case, the honeycomb panel may be arranged on the flexible film body, and the rim roof may be formed by connecting and fixing the edges of the honeycomb panel together. The construction method of the dome roof using the honeycomb panel can further improve the efficiency of manufacturing the honeycomb panel and the efficiency of the construction work of the honeycomb panel. In addition, after the dome roof is constructed, the flexible film body can be removed and reused.
[0037]
【The invention's effect】
As is clear from the description, the dome roof of the present invention includes an innermost flexible film body fixed to the upper end of the side wall of the structure such as a storage tank, a honeycomb core coated and fixed to the upper surface of the flexible film body, Since it is formed with a connecting face material that is coated and fixed on the upper surface of the honeycomb core, the inner wall surface of the roof is covered with a flexible film body having corrosion resistance, and a lightweight and rigid honeycomb core is in close contact with the upper surface, Since the connecting surface material having weather resistance and the like is in close contact with the upper surface of the honeycomb core and is firmly fixed and bonded together, it is light weight, high strength, excellent durability, uniform curvature, and close to the shape of a blastomer shell. Excellent dome roof. In addition, since the honeycomb core is a hollow body and has excellent heat insulation properties, it has a dome roof suitable for low temperature storage tanks that require heat insulation, thermal insulation storage tanks, or storage tanks that need to block the influence of outside temperature, etc. Become.
[0038]
Moreover, since the dome roof is lightweight, the upper end of the side wall supporting the dome roof can be simplified, and the side wall can be made thinner. can get.
[0039]
Fixing the periphery of the innermost flexible membrane body forming the dome roof, introducing air into the lower portion of the flexible membrane body and tensioning, and spreading and fixing the honeycomb core on the tensioned flexible membrane body, In the present invention, a connecting face material is arranged and fixed on the upper surface of the honeycomb core, or a honeycomb core coated and fixed with a connecting face material is arranged and fixed on the tensioned flexible film body. The construction method of the dome roof is light in the weight of the roof member such as the honeycomb core, and is light in weight and light in load. Therefore, the workability on the flexible membrane body in which the scaffold and the construction position are stable is good. It can be constructed in a short time with good work efficiency. Moreover, since a partial unbalanced load is not applied, the flexible film body does not dent locally, and a dome shape having a uniform curvature, close to a blastomer shell shape and excellent in aesthetics can be obtained. Moreover, since the roof weight and the load at the time of construction are small, construction of a large-sized structure is facilitated, the air pressure supporting the flexible film body can be reduced, and the blower equipment can be made small. Furthermore, there is no risk of damaging the flexible membrane during work, and safety during construction is improved.
[0040]
Further, in the construction method in which the honeycomb core in the folded state is expanded and fixed on the flexible film body, the honeycomb core is transported in a compressed and folded state, so it is not bulky during transportation and is lightweight. Therefore, it is easy to transport and does not cost transportation, and the lightweight honeycomb core in the folded state is easy to handle even during construction on the flexible membrane body, so that the efficiency of the deployment work is improved. Furthermore, since this honeycomb core can be easily spread along the surface of the blastomer shell-shaped flexible film body during installation and can be brought into close contact with the shape, the shape of the upper surface and the lower surface is not necessarily the same. There is no need to form the shell so as to match the shape of the shell, and a blastomer shell shape can be obtained in a state where it is placed as it is, and a dome shape having an excellent aesthetic appearance can be obtained.
[0041]
Further, in the method of arranging and fixing the honeycomb core with the connection face material covered and fixed, the honeycomb core with the connection face material covered and fixed can be efficiently manufactured in advance in the synthetic panel structure at a factory or the like. it can. Further, the honeycomb core coated and fixed with the connecting face material can be easily arranged and connected on the flexible film body, and can be constructed with high work efficiency.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view illustrating an embodiment of a storage tank provided with a dome roof according to the present invention.
FIG. 2 is a partial cross-sectional explanatory view showing a construction state of a dome roof according to the present invention.
FIG. 3 is a partial cross-sectional explanatory view showing another embodiment of the construction state of the dome roof according to the present invention.
FIG. 4 is a longitudinal cross-sectional explanatory view showing a construction situation of a conventional dome roof constructed by an air dome method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Storage tank 2 Dome roof 3 Bottom plate 4 Side wall 5 Flexible film body 6 Blower 7 Honeycomb core 8 Connecting surface material 9 Adhesive 10 Adhesive 11 Adhesive 101 Storage tank 102 Dome roof 102A Concrete dome roof 102B Metal dome roof 103 Bottom plate 104 Side wall 105 Flexible membrane 106 Blower 107 Roof member 107A Concrete roof member 107B Metal roof member

Claims (2)

A dome roof covering an upper part of a structure such as a storage tank, the dome roof comprising an innermost flexible film body fixed to an upper end of a side wall of the structure such as a storage tank, and a honeycomb fixed to the upper surface of the flexible film body A dome roof characterized by being formed of a core and a connecting surface material fixedly coated on the upper surface of the honeycomb core. A method for constructing a dome roof for covering an upper part of a structure such as a storage tank, wherein a peripheral edge of an innermost flexible film body forming the dome roof is fixed to an upper end of a side wall of the structure such as a storage tank, and the flexible film body Introducing air into the lower part of the fiber and tensioning it, the honeycomb core is unfolded and fixed on the tensioned flexible film body, and the connecting face material is disposed and fixed on the upper surface of the honeycomb core, or the tensioned flexible film A method for constructing a dome roof, characterized in that a honeycomb core covered with a connecting face material is fixedly disposed on a body.

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