JP2019035297A - Vibration control and aseismic reinforcement structure of a concrete structure - Google Patents

Abstract

To provide a vibration control and aseismic reinforcement structure of a concrete structure which is simple in construction, easy to manufacture, short in installation work time, light in weight, and high in vibration control.SOLUTION: A vibration control and aseismic reinforcement structure includes: a plurality of spaced reinforcement members connected to outer surfaces of a concrete column and a concrete beam; a concrete structure made up of the concrete column and the concrete beam which are anti-seismically reinforced by a solidification material stuffed in gaps among the concrete column, the concrete beam, and the reinforcement members; and a damping reinforcement member formed by integrating continuous fiber sheets on both flange surfaces of H-shaped steel and steel cover plates on the continuous fiber sheets. A plurality of the damping reinforcement members are arranged between the anti-seismically reinforced parts of the concrete beams arranged in the vertical direction or between the anti-seismically reinforced part of the concrete beams and the anti-seismically reinforced part of the concrete column, such that both ends of each of the damping reinforcement members arranged in an oblique direction are connected and fixed, via a fixing member, to the anti-seismically reinforced part of the concrete beam or the anti-seismically reinforced concrete column.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a vibration control and a seismic reinforcement structure for a concrete structure including a concrete column and a concrete beam.

  Conventionally, as a vibration damping reinforcement structure for a concrete structure including a concrete column and a concrete beam, a damping brace is arranged in an oblique direction between the concrete beam and the concrete column.

JP-A-2005-42537 JP 2017-96018 A

  However, the conventional vibration-damping reinforcement structure for concrete structures has a complicated structure of the vibration-damping brace member, the cross-section is increased to improve the earthquake-resistant performance, and the appearance of the building in a mounted state is impaired, and the installation cost is further reduced. The problem is that the cost is high, and the seismic strength of the concrete column and the concrete beam to which the axial force applied to the damping brace is transmitted is insufficient.

  SUMMARY OF THE INVENTION The present invention solves the problems of the prior art, and provides a vibration damping and seismic reinforcement structure for a concrete structure that is simple in structure, easy to manufacture, requires only a short time for installation, is lightweight and has high vibration damping performance. The purpose is to provide.

  In order to solve the above problems, the vibration damping and reinforcing structure for a concrete structure according to the present invention includes a reinforcing member continuously provided with a predetermined gap between the concrete column and the outer surface of the concrete beam, and the concrete column and the concrete beam. A concrete structure consisting of concrete columns and concrete beams seismically reinforced by a solidified material filled in the gap between the reinforcing members, a continuous fiber sheet on both flange surfaces of H-shaped steel, and a steel cover plate on it A plurality of vibration control members disposed in an oblique direction between the seismic reinforced portions of the upper and lower concrete beams or between the seismic reinforced portions of the concrete beams and the seismic reinforced portions of the concrete columns. Both ends of the reinforcing member are fixed to a seismic reinforced portion of a concrete column or concrete beam via a fixing member.

  Further, the vibration damping and seismic reinforcement structure for a concrete structure according to the present invention is such that the reinforcing members to be connected are formed in a shape in which horizontal reinforcing ribs are formed on the upper and lower sides of the body portion having a U-shaped cross section, and the outer surface of the concrete column and the concrete beam A reinforcing member is fixed to a connecting member having a horizontal portion and a vertical portion fixed to each other by an anchor bolt.

  Further, the vibration damping and seismic strengthening structure for a concrete structure according to the present invention is characterized in that reinforcing bars are arranged in the gap between the concrete column, the outer surface of the concrete beam, and the reinforcing member.

  Moreover, the vibration damping and seismic strengthening structure of a concrete structure of the present invention is characterized in that a plurality of post-construction anchors protruding from the outer surface of the concrete column and the concrete beam are arranged.

  Moreover, the vibration damping and seismic reinforcement structure of the concrete structure of the present invention is characterized in that the material of the continuous fiber sheet is any one of carbon fiber, aramid fiber, polyethylene fiber, and polyarylate fiber.

A reinforcing member that is connected to the outside surface of the concrete column and the concrete beam with a certain gap, and a concrete column and a concrete beam that are seismically reinforced by a solidifying material that fills the gap between the concrete column, the concrete beam, and the reinforcing member. And a vibration-reinforcing reinforcing member in which a continuous fiber sheet and a steel cover plate are integrated on both flange surfaces of the H-shaped steel. The seismic reinforced part of the concrete column or the concrete beam is fixed to the both ends of a plurality of vibration damping reinforcement members arranged diagonally between the seismic reinforced part of the concrete beam and the seismic reinforced part of the concrete column. By fixing, the vibration-damping reinforcement member improves the vibration-damping and seismic resistance by integrating the continuous fiber sheet into a sandwich shape. It is possible to reduce the weight of the mold, and it is possible to significantly improve the vibration control and earthquake resistance of the concrete structure by synergistic effect by integrating the vibration control reinforcement member with the seismic reinforcement part of the concrete column and concrete beam. It becomes.
The reinforcing member to be connected is formed into a shape in which horizontal reinforcing ribs are formed on the top and bottom of the U-shaped main body, and the connecting member has a horizontal part and a vertical part fixed to the outer surface of the concrete column and the concrete beam with anchor bolts. By fixing the reinforcing member with the connecting bolt, it becomes easy to fix the reinforcing member to the concrete pillar and the concrete beam, and the vertical horizontal reinforcing part makes it easy to connect the reinforcing member in the vertical direction or the horizontal direction. It is possible to improve the earthquake resistance by integrating the horizontal reinforcing rib and the high-strength concrete.
It is possible to further improve the earthquake resistance by arranging reinforcing bars in the gaps between the concrete columns and the outer surfaces of the concrete beams and the reinforcing members.
By arranging a plurality of post-construction anchors protruding from the outer surface of the concrete column and the concrete beam, the integration of the concrete column, the concrete beam and the high-strength concrete can be promoted to improve the earthquake resistance.
The tensile strength can be improved by using any one of carbon fiber, aramid fiber, polyethylene fiber, and polyarylate fiber as the material of the continuous fiber sheet.

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  Embodiments of the present invention will be described with reference to the drawings. 1 and 2 are a perspective view and a front view of a vibration damping reinforcement member 1 used in the vibration damping and seismic reinforcement structure of a concrete structure according to the present invention.

  The vibration-damping reinforcement member 1 has a continuous fiber sheet 3 and a steel cover plate 4 bonded thereto with an adhesive on the upper and lower flanges 2a and 2b of the H-section steel 2 having upper and lower flanges 2a and 2b connected by a web 2c. The continuous fiber sheet 3 is integrated with the upper and lower flanges 2a and 2b and the steel cover plate 4 in a sandwich shape. As a material of the continuous fiber sheet 3, inorganic fibers such as carbon fibers, organic fibers such as aramid fibers, polyethylene fibers, and polyarate fibers are used. In the continuous fiber sheet 3 formed of these fibers, the tensile strength of the fiber sheet in one direction and in two directions is as large as 5 to 180 ton / m.

  FIG. 3 is a perspective view of a reinforcing member 7 that seismically reinforces the concrete pillar 5 and the concrete beam 6, and FIGS. 4A and 4B are a top view and a front view of the reinforcing member 7. The reinforcing member 7 is formed with upper and lower horizontal reinforcing ribs 7b and 7c extending horizontally above and below the U-shaped main body portion 7a. The vertical horizontal reinforcing ribs 7b and 7c are formed with connecting bolt holes 7d for connecting the adjacent reinforcing members 7 when the reinforcing members 7 are connected. A connecting bolt hole 7e for fixing with a connecting bolt 10 to a connecting member 9 having a horizontal part and a vertical part fixed to a concrete column 5 and a concrete beam 6 to be described later with anchor bolts 8 is formed on the side surface of the main body part 7a. Is done.

  FIG. 5A is a horizontal cutaway view of an embodiment in which the concrete pillar 5 is reinforced earthquake-proof using the reinforcing member 7, and FIG. 5B is a vertical cutaway view. A connecting member 9 having a horizontal portion and a vertical portion on the outer surface of the concrete column 5 is fixed with anchor bolts 8 across the portion to be reinforced of the concrete column 5. In the embodiment shown in the figure, the connecting member 9 has a pair of L-shaped cross sections each having a horizontal portion and a vertical portion, but may be a single U-shaped cross section having a horizontal portion and a vertical portion. The horizontal portion of the connecting member 9 is fixed to the concrete pillar 5 with the anchor bolt 8. A connecting bolt hole 9 a is formed in the vertical portion of the connecting member 9. The connecting bolt 10 is inserted into the connecting bolt hole 9 a of the connecting member 9 and the connecting bolt hole 7 e formed in the main body portion 7 a of the reinforcing member 7, and a nut is screwed onto the male thread portion of the connecting bolt 10 to connect the connecting bolt 10. 9 and the reinforcing member 7 are connected.

  A post-construction anchor 11 is installed on the concrete column 5, and a protruding portion of the post-construction anchor 11 is positioned in a gap between the reinforcing member 7 and the concrete column 5. The post-construction anchor 11 promotes the integration of the concrete pillar 5 and the high-strength concrete to improve the earthquake resistance. A reinforcing bar 12 is arranged in the gap between the reinforcing member 7 and the concrete column 5. The reinforcing member 7 is continuously provided up to the seismic reinforcement region of the concrete column 5. Thereafter, high-strength concrete mortar is filled in the gap between the reinforcing members 7 connected to the concrete pillars 5 and solidified to integrate the concrete pillars 5 and the reinforcing members 7 for earthquake resistance. A continuous fiber sheet may be applied to the outer periphery of the reinforcing member 7 to improve energy attenuation and tensile strength.

  FIG. 6 is a vertical sectional view of an embodiment in which the concrete beam 6 is seismically reinforced using the reinforcing member 7. A connecting member 9 having a horizontal portion and a vertical portion on the outer surface of the concrete beam 6 is fixed with anchor bolts 8 across the portion to be reinforced of the concrete beam 6. A connecting bolt hole 9 a is formed in the vertical portion of the connecting member 9. The connecting bolt 10 is inserted into the connecting bolt hole 9 a of the connecting member 9 and the connecting bolt hole 7 e formed in the main body portion 7 a of the reinforcing member 7, and a nut is screwed onto the male thread portion of the connecting bolt 10 to connect the connecting bolt 10. 9 and the reinforcing member 7 are connected.

  A post-construction anchor 11 is installed on the concrete beam 6, and a protruding portion of the post-construction anchor 11 is positioned in a gap between the reinforcing member 7 and the concrete beam 6. The post-construction anchor 11 promotes the integration of the concrete pillar 5 and the high-strength concrete to improve the earthquake resistance. The reinforcing member 7 is connected to the connecting member 9 with a connecting bolt 10. A reinforcing bar 12 is arranged in the gap between the reinforcing member 7 and the concrete beam 6. The reinforcing member 7 is connected to the seismic reinforcement area of the concrete beam 6. Thereafter, a high-strength concrete mortar is filled in the gap between the reinforcing members 7 connected to the concrete beam 6 and solidified, and the concrete beam 6 and the reinforcing member 7 are integrated and seismically reinforced. A continuous fiber sheet may be applied to the outer periphery of the reinforcing member 7 to improve energy attenuation and tensile strength.

  FIG. 7 is a view showing an embodiment in which the vibration-damping reinforcement member 1 shown in FIGS. 1 and 2 is arranged in the earthquake-proof reinforcement part of the concrete column 5 subjected to earthquake-proof reinforcement and the earthquake-proof reinforcement part of the concrete beam 6. FIG. 9 is a partially enlarged view thereof.

  The vibration suppression reinforcement member 1 is cut into a shape that is in surface contact with the seismic reinforcement portion of the concrete beam 6 that joins both ends of the vibration damping reinforcement member 1 and the seismic reinforcement portion of the concrete column 5. In the embodiment shown in FIG. 7, one end of the two vibration damping reinforcing members 1 is brought into surface contact with the seismic reinforcing portion of the concrete beam 6, and the other end is connected to the seismic reinforcing portion of the concrete column 5 and the seismic reinforcing portion of the concrete beam. Surface contact is made at the intersection. However, the arrangement of the vibration damping reinforcing member 1 is not limited to the embodiment shown in the drawing.

  A procedure for arranging and fixing the vibration damping reinforcement member 1 on the seismic reinforcement part of the concrete column 5 and the seismic reinforcement part of the concrete beam 6 will be described. First, the fixing member 13 is fixed to the reinforcing member 7 that seismically reinforces the concrete column 5 and the reinforcing member 7 that seismically reinforces the concrete beam 6. The fixing member 13 has a portion that is in surface contact with the reinforcing member 7 and a portion that is in surface contact with the vibration damping reinforcing member 1, and before the high-strength concrete is filled in the gap between the reinforcing member 7, the concrete column 5, and the concrete beam 6. The fixing member fixing bolt hole is formed at a position corresponding to the fixing bolt hole formed in the fixing member 13 in the reinforcing member 7 in surface contact with the fixing member 13, and the head of the fixing bolt 14 is located inside the reinforcing member 7. The fixing member 13 is fixed to the reinforcing member 7 by being inserted so as to be positioned and screwing a nut onto the male screw portion of the fixing bolt 14. Since it is before filling with high-strength concrete mortar, it is desirable to screw a nut through a seal member.

  After fixing the fixing member 13 to the reinforcing member, the vibration-damping reinforcing member 1 is disposed so as to be in surface contact with the fixing member 13. A fixing bolt hole is formed at a position corresponding to the fixing bolt hole formed in the fixing member 13 at a portion in surface contact with the fixing member of the vibration damping reinforcing member 1, and the head of the fixing bolt 14 is connected to the vibration damping reinforcing member 1. The damping reinforcement member 1 is fixed to the fixing member 13 by inserting the nut so as to be positioned inside the flange of the fixing bolt 14 and screwing a nut onto the male screw portion of the fixing bolt 14. In the embodiment shown in FIGS. 7 and 8, there is a fixing member 13 that is in surface contact only with the vibration damping reinforcing member 1. The fixing member 13 and the vibration damping reinforcing member 1 are fixed as described above.

  The timing of filling the high-strength concrete mortar is preferably after the fixing member 13 is fixed to the reinforcing member 7 and before the vibration-damping reinforcing member 1 is installed. If the vibration-damping reinforcement member 1 is installed before filling and solidifying the high-strength concrete mortar, the load of the vibration-damping reinforcement member 1 is applied to the reinforcing member 7 in which the concrete column 5 and the concrete beam 6 are connected only by the connecting bolt 10. This is because the connecting bolt 10 may be damaged.

  High-strength concrete mortar is filled in the gap between the reinforcing member 7 and the concrete column 5 and the concrete beam 6 and solidified. The The vibration damping reinforcement member 1 is integrated with the portions of the concrete pillar 5 and the concrete beam 6 which are reinforced against earthquakes via a fixing member 13 to form a vibration damping and earthquake proof reinforcement structure for the concrete structure.

  As described above, according to the vibration damping and seismic reinforcement structure of the concrete structure of the present invention, the vibration damping reinforcement member integrates the continuous fiber sheet into a sandwich shape, thereby improving the vibration damping performance and the earthquake resistance. It is possible to reduce the weight, and by integrating the vibration-damping reinforcement member, the concrete pillar, and the earthquake-resistant reinforcement part of the concrete beam, it is possible to remarkably improve the vibration damping and earthquake resistance of the concrete structure with a synergistic effect. Become.

  1: Damping reinforcing member, 2: Shape steel, 2a: Upper flange, 2b: Lower flange, 2c: Web, 3: Continuous fiber sheet, 4: Steel cover plate, 5: Concrete column, 6: Concrete beam, 7 : Reinforcing member, 7a: main body, 7b: upper horizontal reinforcing rib, 7c: lower horizontal reinforcing rib, 7d: connecting bolt hole, 7e: connecting bolt hole, 8: anchor bolt, 9: connecting member, 9a: connecting Bolt hole, 10: connecting bolt, 11: post-installed anchor, 12: reinforcing bar, 13: fixing member, 14: fixing bolt

In order to solve the above-mentioned problems, the vibration suppression and seismic reinforcement reinforcement structure of a concrete structure according to the present invention provides a vibration suppression and earthquake resistance reinforcement structure for a concrete structure composed of a concrete column and a concrete beam. A connecting member having a horizontal portion and a vertical portion on the side surface and fixed to the horizontal portion with anchor bolts, and a horizontal reinforcing rib formed on the top and bottom of the U-shaped main body, and connected to the vertical portion of the connecting member with a connecting bolt. A plurality of reinforcing members installed and fixed, a solidified material filled in a gap between the concrete column and the concrete beam and the reinforcing member, continuous fiber sheets on both flange surfaces of the H-shaped steel, and a steel cover plate thereon and a damping reinforcement member with an integrated, between the upper and lower reinforcing member is fixed to the concrete beam or reinforcing member and the concrete pillars fixed to the concrete beam Characterized by fixing the reinforcing member that is fixed to the concrete column or concrete beams the ends of a plurality of damping reinforcing member disposed in an oblique direction through the fixed member between the fixed reinforcing member.

In the structure for damping and seismic strengthening of concrete structures consisting of concrete columns and concrete beams, a connecting member having horizontal and vertical portions on the outer surface of the concrete columns and concrete beams and the horizontal portions being fixed by anchor bolts, and a cross section In the shape of horizontal reinforcement ribs formed on the top and bottom of the U-shaped main body, a plurality of reinforcement members that are connected and fixed to the vertical portion of the connection member with connection bolts, and the gap between the concrete column and the concrete beam and the reinforcement member Between the reinforcing members fixed to the upper and lower concrete beams, comprising a solidified material to be filled, and a vibration damping reinforcing member in which a continuous fiber sheet and a steel cover plate are integrated on both flange surfaces of the H-shaped steel Both ends of the plurality of damping reinforcing member disposed in an oblique direction through a fixing member or between fixed reinforcing member in a fixed reinforcing member and the concrete pillars in concrete beam By fixing the reinforcement member fixed to the concrete column or concrete beam, vibration damping characteristics by damping the reinforcing member are integrated continuous fiber sheet sandwich, be reduced in size and weight while improving the earthquake resistance By integrating the vibration-damping reinforcement member, the concrete pillar, and the seismic reinforcement portion of the concrete beam, it becomes possible to remarkably improve the vibration damping and the earthquake resistance of the concrete structure with a synergistic effect.
It is possible to further improve the earthquake resistance by arranging reinforcing bars in the gaps between the concrete columns and the outer surfaces of the concrete beams and the reinforcing members.
By arranging a plurality of post-construction anchors protruding from the outer surface of the concrete column and the concrete beam, the integration of the concrete column, the concrete beam and the high-strength concrete can be promoted to improve the earthquake resistance.
The tensile strength can be improved by using any one of carbon fiber, aramid fiber, polyethylene fiber, and polyarylate fiber as the material of the continuous fiber sheet.

In order to solve the above-described problems, the vibration damping and seismic reinforcement structure of a concrete structure according to the present invention is a vibration damping and earthquake resistance reinforcement structure of a concrete structure composed of a concrete column and a concrete beam. A connecting member that has a horizontal part and a vertical part, and the horizontal part is fixed with anchor bolts, and a horizontal reinforcing rib is formed on the top and bottom of the U-shaped main body part. A plurality of reinforcing members fixed to each other, a solidified material filled in a gap between the concrete column and the concrete beam and the reinforcing member, continuous fiber sheets on both flange surfaces of the H-shaped steel, and the entire flange surface on the flange surface And a reinforcing part fixed to the concrete beam or between the reinforcing members fixed to the upper and lower concrete beams. And characterized in that fixed to the reinforcement member fixed to the concrete column or concrete beams through the ends a fixing member a plurality of damping reinforcing member disposed in an oblique direction between the fixed reinforcing member in concrete column.

In the structure for damping and seismic strengthening of concrete structures consisting of concrete columns and concrete beams, a connecting member having horizontal and vertical portions on the outer surface of the concrete columns and concrete beams and the horizontal portions being fixed by anchor bolts, and a cross section In the shape of horizontal reinforcement ribs formed on the top and bottom of the U-shaped main body, a plurality of reinforcement members that are connected and fixed to the vertical portion of the connection member with connection bolts, and the gap between the concrete column and the concrete beam and the reinforcement member A solidified material to be filled, and a vibration-reinforcing reinforcing member that integrates a continuous fiber sheet and a steel cover plate covering the entire flange surface on both flange surfaces of the H-shaped steel, and are fixed to the upper and lower concrete beams. A plurality of vibration-damping reinforcement members arranged obliquely between the reinforcement members fixed to the concrete beam or between the reinforcement members fixed to the concrete beam and the reinforcement member fixed to the concrete column By fixing both ends to a reinforcing member fixed to a concrete column or concrete beam via a fixing member, the vibration-damping reinforcing member improves the vibration damping and earthquake resistance by integrating the continuous fiber sheet in a sandwich shape. It is possible to reduce the size and weight while integrating the vibration-proof reinforcement member, the concrete pillar, and the earthquake-resistant reinforcement part of the concrete beam, which can significantly improve the vibration control and earthquake resistance of the concrete structure with a synergistic effect. It becomes possible.
It is possible to further improve the earthquake resistance by arranging reinforcing bars in the gaps between the concrete columns and the outer surfaces of the concrete beams and the reinforcing members.
By arranging a plurality of post-construction anchors protruding from the outer surface of the concrete column and the concrete beam, the integration of the concrete column, the concrete beam and the high-strength concrete can be promoted to improve the earthquake resistance.
The tensile strength can be improved by using any one of carbon fiber, aramid fiber, polyethylene fiber, and polyarylate fiber as the material of the continuous fiber sheet.

Claims (5)

A reinforcing member that is connected to the outside surface of the concrete column and the concrete beam with a certain gap, and a concrete column and a concrete beam that are seismically reinforced by a solidifying material that fills the gap between the concrete column, the concrete beam, and the reinforcing member. A concrete structure,
A vibration-damping reinforcement member in which a continuous fiber sheet and a steel cover plate are integrated on both flange surfaces of the H-shaped steel;
With
The ends of a plurality of anti-vibration reinforcing members arranged between the upper and lower concrete beams in the seismic strengthening part or between the seismic strengthened part of the concrete beam and the seismic strengthening part of the concrete column through the fixing members Damping and seismic reinforcement structure of concrete structure, which is fixed to seismic reinforcement part of concrete column or concrete beam.   The reinforcing member to be connected is formed into a shape in which horizontal reinforcing ribs are formed on the top and bottom of the U-shaped main body, and the connecting member has a horizontal part and a vertical part fixed to the outer surface of the concrete column and the concrete beam with anchor bolts. The structure according to claim 1, wherein the reinforcing member is fixed with a connecting bolt.   The structure for damping and seismic reinforcement of a concrete structure according to claim 1 or 2, wherein reinforcing bars are arranged in the gap between the concrete column and the outer surface of the concrete beam and the reinforcing member.   4. The concrete structure damping and earthquake-proof reinforcement structure according to claim 1, wherein a plurality of post-construction anchors projecting from the outer surface of the concrete column and the concrete beam are arranged. 5.   The material for a continuous fiber sheet is any one of carbon fiber, aramid fiber, polyethylene fiber, and polyarylate fiber, and the structure for damping and reinforcing a concrete structure according to any one of claims 1 to 4.

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