Earthquake-resistant reinforcement structure

Abstract

To provide a seismic reinforcement structure capable of securing sufficient bearing force as a seismic wall while facilitating installation of the seismic wall on a column-beam frame by composing the seismic wall with a plurality of panels, and suppressing shear cracking of column capitals.SOLUTION: A seismic wall 6 is fixed to a structural surface 5 of a column beam frame 4 by adhesive bonding. The seismic wall 6 is composed of a plurality of panels 11 arranged along an in-plane direction of the column beam frame 4. An inter-panel displacement prevention portion 13 is provided at a boundary between the panels 11 to prevent displacement of the panels 11 along the boundary in the in-plane direction. At a boundary between the seismic wall 6 and a beam 3, a seismic wall displacement prevention part 16 is provided to prevent the seismic wall 6 and the beam 3 from displacing along the boundary in the in-plane direction. At a boundary between the seismic wall 6 and a column 2, the seismic wall 6 and the column 2 are cut off.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an earthquake-resistant reinforcement structure that can be used for a column-beam frame composed of columns and beams, and in particular to an earthquake-resistant reinforcement structure in which an earthquake-resistant wall is fixed to the structural surface of a column-beam frame composed of columns and beams by adhesive bonding. [Background technology]

[0002] Patent Document 1 shows an earthquake-resistant reinforcement structure in which an earthquake-resistant wall (3) is fixed by adhesive bonding to a structural surface surrounded by a column-beam frame composed of columns (1) and beams (2). In the earthquake-resistant reinforcement structure of Patent Document 1, the earthquake-resistant wall (3) is composed of a plurality of panels arranged along the in-plane direction (horizontal direction). Panel slip prevention parts are provided at the boundaries between the panels to prevent slippage between the panels, and column-beam slip prevention parts are provided at the boundaries between the entire periphery of the earthquake-resistant wall and the column-beam frame to prevent slippage between the earthquake-resistant wall and the columns or beams.

[0003] In this type of earthquake-resistant reinforcement structure, the earthquake-resistant wall is composed of multiple panels, which makes it easier to transport the earthquake-resistant wall, which is precast concrete, to the site and to install it in the opening at the site. In addition, by providing a part to prevent slippage between the panels at the borders of the panels, it becomes easier to ensure the necessary strength of the earthquake-resistant wall even when it is divided into multiple panels. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 07-310381 Summary of the Invention [Problem to be solved by the invention]

[0005] However, although adhesively fixing earthquake-resistant walls to the structural surface surrounded by the column-beam structure can prevent interlaminar deformation of the beams in the event of an earthquake, there is a risk that stress will be concentrated at the column heads, causing shear cracks to occur in the column heads.

[0006] In view of this situation, the main objective of the present invention is to provide an earthquake-resistant reinforcement structure in which an earthquake-resistant wall is constructed from multiple panels, making it easy to install the earthquake-resistant wall on a column-beam frame while ensuring sufficient strength as an earthquake-resistant wall and capable of suppressing shear cracks at the column capitals. [Means for solving the problem]

[0007] The first characteristic configuration of the present invention is a seismic reinforcement structure in which a seismic wall is fixed to a structural surface of a column-beam frame composed of columns and beams by adhesive bonding, The earthquake-resistant wall is composed of a plurality of panels arranged along the in-plane direction of the column-beam frame, At the boundary between the panels, a panel slippage prevention portion is provided to prevent slippage between the panels along the boundary in the in-plane direction, A seismic wall slippage prevention portion is provided at a boundary portion between the seismic wall and the beam to prevent slippage between the seismic wall and the beam along the boundary portion in the in-plane direction, At the boundary between the earthquake-resistant wall and the column, the earthquake-resistant wall and the column are separated from each other. 、 To configure the seismic wall slippage prevention portion, the edge of the seismic wall facing the beam is formed in a corrugated shape, and a hardening filler is filled between the edge of the seismic wall and the beam. It is at the point.

[0008] According to this configuration, the earthquake-resistant wall is divided into multiple panels and inter-panel slippage prevention sections are provided at the boundaries between the panels. By dividing the earthquake-resistant wall into multiple panels, it becomes easier to install the earthquake-resistant wall on the structural surface of the column-beam structure, while the inter-panel slippage prevention sections prevent slippage between the panels, making it easier to ensure the required strength of the earthquake-resistant wall by having the multiple panels function as a unit. Furthermore, by preventing slippage between the earthquake-resistant wall and the beam using the earthquake-resistant wall slippage prevention section installed at the boundary between the earthquake-resistant wall and the beam, the horizontal shear strength of the earthquake-resistant wall can prevent inter-story displacement of the upper and lower beams (deformation of the column-beam structure), improving earthquake resistance, while by allowing slippage between the earthquake-resistant wall and the column by cutting the edge at the boundary between the earthquake-resistant wall and the column, shear cracks at the column capitals can be suppressed.

[0010] Also, According to this configuration, in the seismic wall slippage prevention section, in addition to the hardening filling material filled between the edge of the seismic wall and the beam, the edge of the seismic wall is formed in a wavy shape, which more effectively prevents slippage between the seismic wall and the beam compared to when the edge of the seismic wall is formed in a straight line, and allows the horizontal shear strength of the seismic wall to be optimally exerted, further preventing inter-story displacement of the upper and lower beams (deformation of the column-beam structure).

[0011] The present invention 2 The characteristic configuration is: A seismic reinforcement structure in which a seismic wall is fixed to the structural surface of a column-beam frame composed of columns and beams by adhesive bonding, The earthquake-resistant wall is composed of a plurality of panels arranged along the in-plane direction of the column-beam frame, At the boundary between the panels, a panel slippage prevention portion is provided to prevent slippage between the panels along the boundary in the in-plane direction, A seismic wall slippage prevention portion is provided at a boundary portion between the seismic wall and the beam to prevent slippage between the seismic wall and the beam along the boundary portion in the in-plane direction, At the boundary between the earthquake-resistant wall and the column, the earthquake-resistant wall and the column are separated from each other, The inter-panel slippage prevention portion is configured in such a way that the opposing edges of a pair of adjacent panels are formed into a corrugated shape that fits into each other, and a hardening filler is filled between the opposing edges of the pair of panels.

[0012] According to this configuration, the earthquake-resistant wall is divided into multiple panels and inter-panel slippage prevention sections are provided at the boundaries between the panels. By dividing the earthquake-resistant wall into multiple panels, it becomes easier to install the earthquake-resistant wall on the structural surface of the column-beam structure, while the inter-panel slippage prevention sections prevent slippage between the panels, making it easier to ensure the required strength of the earthquake-resistant wall by having the multiple panels function as a unit. Furthermore, by preventing slippage between the earthquake-resistant wall and the beam using the earthquake-resistant wall slippage prevention section installed at the boundary between the earthquake-resistant wall and the beam, the horizontal shear strength of the earthquake-resistant wall can prevent inter-story displacement of the upper and lower beams (deformation of the column-beam structure), improving earthquake resistance, while by allowing slippage between the earthquake-resistant wall and the column by cutting the edge at the boundary between the earthquake-resistant wall and the column, shear cracks at the column capitals can be suppressed. Also, According to this configuration, in the inter-panel slippage prevention portion, in addition to the hardening filler filled between the opposing edges of the pair of panels, the edges of the pair of panels are formed in a wavy shape, so that the panels can be more effectively prevented from slipping apart. Moreover, since the wavy edges of the pair of panels fit together, the panels can be more effectively prevented from slipping apart. Therefore, the panels can function more integrally, making it easier to ensure the necessary strength as a seismic wall.

[0013] The present invention 3 A characteristic feature of the present invention is that the earthquake-resistant wall is configured in a horizontally elongated shape with the edge facing the beam as the long side.

[0014] According to this configuration, by making the earthquake-resistant wall into a horizontally elongated shape that is advantageous for obtaining horizontal shear strength, the earthquake-resistant wall slip prevention parts interposed between the earthquake-resistant wall and the upper and lower beams can efficiently resist horizontal shear forces.

[0015] The present invention 4 A characteristic feature of the present invention is that the plurality of panels are arranged side by side along the longer side direction of the earthquake-resistant wall.

[0016] According to this configuration, by arranging the multiple panels in a line along the long side direction of the earthquake-resistant wall, it is possible to lengthen the short side of the panel along the long side direction of the earthquake-resistant wall and shorten the long side of the panel along the short side direction of the earthquake-resistant wall. This allows the shape of each panel to approach a square shape, improving transportability to the site and workability on site.

[0017] The present invention 5 A characteristic feature of the present invention is that each of the plurality of panels is a SFRC panel.

[0018] According to this configuration, by constructing the panel out of steel fiber reinforced concrete (SFRC), a highly tough and strong panel can be constructed, thereby improving the bearing capacity of the earthquake-resistant wall. [Brief description of the drawings]

[0019] [Figure 1] Front view of column-beam structure [Diagram 2] Enlarged front view of the boundary between panels [Diagram 3] Enlarged front view of the boundary between the earthquake-resistant wall and the beam [Figure 4] Enlarged front view of the boundary between the earthquake-resistant wall and the column DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. In the earthquake-resistant reinforcement structure 1 shown in Fig. 1, a seismic wall 6 is fixed by adhesive bonding to a structural surface 5 of a column-beam frame 4 composed of a column 2 and a beam 3. To explain further, the earthquake-resistant reinforcement structure 1 is a structure in which a building equipped with a column-beam frame 4 is retrofitted for earthquake reinforcement, and the seismic wall 6 is adhesively bonded to the structural surface 5 of the column-beam frame 4.

[0021] As shown in Fig. 1, the column-beam structure 4 is composed of a pair of columns 2, a left column 7 and a right column 8, and a pair of beams 3, an upper beam 9 and a lower beam 10, and a seismic wall 6 is installed in a rectangular installation space (structural plane 5) surrounded by these. Although not shown in the figure, the upper beam 9 and the lower beam 10 are integrally formed with the slab. The direction in which the pair of columns 2 are lined up is the left-right direction X, and the direction in which the pair of beams 3 are lined up is the up-down direction Y.

[0022] The earthquake-resistant wall 6 is formed in a horizontally elongated shape with the edge (referred to as the beam-side edge 17) facing the beam 3 as the long side. In other words, the distance between the pair of columns 2 is wider than the distance between the pair of beams 3, and the installation space has a horizontally elongated shape in which the left-right direction X is longer than the up-down direction Y. Therefore, the earthquake-resistant wall 6 installed in this installation space also has a horizontally elongated shape in which the left-right direction X is longer than the up-down direction Y.

[0023] The earthquake-resistant wall 6 is composed of a plurality of panels 11 arranged along the in-plane direction of the column-beam frame 4. In this embodiment, the plurality of panels 11 are arranged along the long side direction of the earthquake-resistant wall 6. That is, in this embodiment, as described above, the earthquake-resistant wall 6 is formed in a horizontally elongated shape long in the left-right direction X, and the plurality of panels 11 are arranged along the left-right direction X. Also, each of the plurality of panels 11 is formed in a vertically elongated shape long in the up-down direction Y compared to the left-right direction X. In this embodiment, the earthquake-resistant wall 6 is composed of three panels 11, and these three panels 11 may be referred to as the first panel 11A, the second panel 11B, and the third panel 11C in order from the panel 11 on the left side X1 in FIG. 1. Each of the plurality of panels 11 is a high-toughness, high-strength SFRC panel made of steel fiber reinforced concrete reinforced by mixing a large number of steel fibers into concrete instead of reinforcing bars.

[0024] At the boundary between the panels 11, an inter-panel slippage prevention portion 13 is provided to prevent the panels 11 from slipping along the boundary in the in-plane direction. In this embodiment, the inter-panel slippage prevention portion 13 is configured to prevent the panels 11 from slipping in the up-down direction Y. To configure the inter-panel slippage prevention portion 13, panel side edge portions 14, which are the opposing edges of a pair of adjacent panels 11, are formed into a wave shape that fits into each other, and a hardening filler 15 such as grout material (non-shrink mortar) is filled between the opposing panel side edge portions 14 of the pair of panels 11.

[0025] To explain further, as shown in Fig. 1 and Fig. 2, the edge of the right side X2 of the first panel 11A and the edge of the left side X1 of the second panel 11B form opposing panel side edges 14, and the edge of the right side X2 of the first panel 11A and the edge of the left side X1 of the second panel 11B are formed in a wave shape that fits into each other. A hardening filler 15 is filled between the edge of the right side X2 of the first panel 11A and the edge of the left side X1 of the second panel 11B, and the first panel 11A and the second panel 11B are adhesively joined. "The opposing edges of the pair of panels 11 fit into each other" means that the apex of the edge of the right side X2 of the panel 11 on the left side X1 is located on the right side X2 of the apex of the edge of the left side X1 of the panel 11 on the right side X2, and the edges of the pair of panels 11 have overlapping portions when viewed in the vertical direction Y.

[0026] 1, the edge of the right side X2 of the second panel 11B and the edge of the left side X1 of the third panel 11C form opposing panel side edges 14, and the edge of the right side X2 of the second panel 11B and the edge of the left side X1 of the third panel 11C are formed into a wave shape that fits into each other. A hardening filler 15 is filled between the edge of the right side X2 of the second panel 11B and the edge of the left side X1 of the third panel 11C, and the second panel 11B and the third panel 11C are adhesively joined together.

[0027] At the boundary between the earthquake-resistant wall 6 and the beam 3, an earthquake-resistant wall slippage prevention part 16 is provided to prevent slippage between the earthquake-resistant wall 6 and the beam 3 along the boundary in the in-plane direction. In this embodiment, the earthquake-resistant wall slippage prevention part 16 is configured to prevent slippage in the left-right direction X between the earthquake-resistant wall 6 and the beam 3. To configure the earthquake-resistant wall slippage prevention part 16, a beam side edge part 17, which is an edge part of the earthquake-resistant wall 6 facing the beam 3, is formed in a corrugated shape, and a hardening filler 15 such as grout is filled between the edge part of the earthquake-resistant wall 6 and the beam 3.

[0028] 1 and 3, the edges of the upper side Y1 of the earthquake-resistant wall 6 (the edge of the upper side Y1 of the first panel 11A, the edge of the upper side Y1 of the second panel 11B, and the edge of the upper side Y1 of the third panel 11C) are beam-side edges 17 and are formed in a wave shape. A hardening filler 15 is filled between the beam-side edges 17 of the upper side Y1 of the earthquake-resistant wall 6 and the upper beam 9, and the earthquake-resistant wall 6 and the upper beam 9 are adhesively joined together.

[0029] 1, the edges of the lower side Y2 of the earthquake-resistant wall 6 (the edges of the lower side Y2 of the first panel 11A, the edges of the lower side Y2 of the second panel 11B, and the edges of the lower side Y2 of the third panel 11C) are beam-side edges 17 and are formed in a wave shape. A hardening filler 15 is filled between the beam-side edges 17 of the lower side Y2 of the earthquake-resistant wall 6 and the lower beam 10, and the earthquake-resistant wall 6 and the lower beam 10 are adhesively joined together.

[0030] At the boundary between the earthquake-resistant wall 6 and the column 2, the earthquake-resistant wall 6 and the column 2 are cut off, and an earthquake-resistant wall non-slip prevention part 18 is provided to allow slippage between the earthquake-resistant wall 6 and the column 2 along the boundary in the in-plane direction. In this embodiment, the earthquake-resistant wall non-slip prevention part 18 is configured to allow slippage in the up-down direction Y between the earthquake-resistant wall 6 and the column 2. To configure the earthquake-resistant wall non-slip prevention part 18, a hardening filler 15 is filled between the edge of the earthquake-resistant wall 6 and the column 2, and a column side edge part 19, which is the edge of the earthquake-resistant wall 6 facing the column 2, is formed in a straight line, and a sheet material 20 is provided on the surface of the column 2 on the side where the earthquake-resistant wall 6 exists, so that the column 2 and the hardening filler 15 can move relatively in the up-down direction Y.

[0031] 1 and 4, the edge of the left side X1 of the earthquake-resistant wall 6 (the edge of the left side X1 of the first panel 11A) is the column-side edge 19, which is formed in a straight line. Then, with masking tape applied as a sheet material 20 to the surface of the left-side column 7 facing the right side X2, a hardening filler 15 is filled between the column-side edge 19 of the earthquake-resistant wall 6 and the left-side column 7. Therefore, although the space between the earthquake-resistant wall 6 and the left-side column 7 is filled with the hardening filler 15, the earthquake-resistant wall 6 and the left-side column 7 are not adhesively joined, and are therefore movable relative to each other in the vertical direction Y.

[0032] Similarly, as shown in Fig. 1, the edge of the right side X2 of the earthquake-resistant wall 6 (the edge of the right side X2 of the third panel 11C) is formed in a straight line as the column-side edge 19. Then, with masking tape applied as a sheet material 20 to the surface of the right-side column 8 facing the left side X1, a hardening filler 15 is filled between the column-side edge 19 of the earthquake-resistant wall 6 and the right-side column 8. Therefore, although the space between the earthquake-resistant wall 6 and the right-side column 8 is filled with the hardening filler 15, the earthquake-resistant wall 6 and the right-side column 8 are not adhesively joined, and are therefore movable relative to each other in the vertical direction Y.

[0033] [Another embodiment] Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied alone, but may also be applied in combination with the configurations of other embodiments.

[0034] (1) In the above embodiment, the panel slippage prevention portion 13 is configured such that the opposing edges of the pair of panels 11 are formed into a corrugated shape that fits into each other, and the hardening filler 15 is filled between the opposing edges of the pair of panels 11. However, the present invention is not limited to such a configuration. For example, the opposing edges of the pair of panels 11 may be formed into a corrugated shape that does not fit into each other, or the opposing edges of the pair of panels 11 may be formed into a zigzag shape or a straight line.

[0035] (2) In the above embodiment, the edge of the seismic wall 6 facing the beam 3 is formed in a corrugated shape, and the hardening filler 15 is filled between the edge of the seismic wall 6 and the beam 3. However, the present invention is not limited to such a configuration. For example, the edge of the seismic wall 6 facing the beam 3 may be formed in a zigzag shape or a straight line.

[0036] (3) In the above embodiment, the configuration in which the seismic wall 6 and the pillar 2 are separated at the seismic wall non-slip prevention portion 18 may be another configuration, such as attaching a sheet material 20 other than masking tape to the pillar 2.

[0037] (4) In the above embodiment, a configuration in which the multiple panels 11 are arranged side by side along the long side direction (left-right direction X) of the earthquake-resistant wall 6 has been described as an example. However, the present invention is not limited to such a configuration. For example, the multiple panels 11 may be arranged side by side in the up-down direction Y and side by side along the short side direction of the earthquake-resistant wall 6.

[0038] (5) In the above embodiment, the plurality of panels 11 are SFRC panels. However, the present invention is not limited to such a configuration. For example, the plurality of panels 11 may be panels made of materials other than SFRC, such as reinforced concrete panels.

[0039] (6) The present invention is not limited to the case where a seismic wall 6 is installed on the structural surface 5 of an existing column-beam structure 4, but can also be suitably applied to the case where a seismic wall 6 is installed on the structural surface of a newly built column-beam structure. [Explanation of symbols]

[0040] 1 Earthquake-resistant reinforcement structure 2 Pillars 3 beams 4 Column beam frame 5. Composition 6 Earthquake-resistant walls Panel 11 13 Panel misalignment prevention section 15 Curable filler 16 Earthquake-resistant wall slip prevention section

Claims

1. A seismic reinforcement structure in which a seismic wall is fixed to the structural surface of a column-beam frame composed of columns and beams by adhesive bonding, The earthquake-resistant wall is composed of a plurality of panels arranged along the in-plane direction of the column-beam frame, At the boundary between the panels, a panel slippage prevention portion is provided to prevent slippage between the panels along the boundary in the in-plane direction, A seismic wall slippage prevention portion is provided at a boundary portion between the seismic wall and the beam to prevent slippage between the seismic wall and the beam along the boundary portion in the in-plane direction, At the boundary between the earthquake-resistant wall and the column, the earthquake-resistant wall and the column are separated from each other, In order to form the seismic wall slippage prevention portion, the edge of the seismic wall facing the beam is formed in a corrugated shape, and a hardening filler is filled between the edge of the seismic wall and the beam.

2. A seismic reinforcement structure in which a seismic wall is fixed to the structural surface of a column-beam frame composed of columns and beams by adhesive bonding, The earthquake-resistant wall is composed of a plurality of panels arranged along the in-plane direction of the column-beam frame, At the boundary between the panels, a panel slippage prevention portion is provided to prevent slippage between the panels along the boundary in the in-plane direction, A seismic wall slippage prevention portion is provided at a boundary portion between the seismic wall and the beam to prevent slippage between the seismic wall and the beam along the boundary portion in the in-plane direction, At the boundary between the earthquake-resistant wall and the column, the earthquake-resistant wall and the column are separated from each other, To form the inter-panel slippage prevention portion, the opposing edges of a pair of adjacent panels are formed into a corrugated shape that fits into each other, and a hardening filler is filled between the opposing edges of the pair of panels in an earthquake-resistant reinforcement structure.

3. 3. The earthquake-resistant reinforcement structure according to claim 1, wherein the earthquake-resistant wall is configured in a horizontally elongated shape with the edge portion facing the beam as the long side.

4. The earthquake-resistant reinforcement structure according to claim 3 , wherein the plurality of panels are arranged in a line along a long side direction of the earthquake-resistant wall.

5. 5. The earthquake-resistant reinforcement structure according to claim 1, wherein each of the plurality of panels is a SFRC panel.

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