JP3842865B2 - Seismic reinforcement method for buildings - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seismic reinforcement method for buildings for reinforcing the earthquake resistance of existing buildings.
[0002]
[Prior art]
As a conventional technique related to the seismic reinforcement method for buildings, there is a seismic reinforcement method for existing buildings by concrete block stacking described in Japanese Patent Publication No. 57-12832. In this method, a concrete block with a specially-shaped inclined surface is loaded almost completely in the frame of an existing building, and this concrete block stacking wall is reinforced with reinforcing bars anchored to the columns and beams that form the frame. Then, the gap between the concrete block stacking wall and the frame is filled with mortar to achieve structural integrity.
[0003]
As another conventional technique, there is a method using a lattice-type block seismic wall published in the construction newspaper (October 31, 1996). In this method, unit grid blocks with built-in steel plates are joined together with high-strength bolts to integrate them into a seismic wall. This seismic wall is connected to the surrounding frame via spiral reinforcement and peripheral frame reinforcement. Then, the fixing plate is fixed to the joining anchor driven into the frame.
[0004]
[Problems to be solved by the invention]
The conventional seismic reinforcement methods described above are methods in which the anchors are mainly used to fix the block stacking wall to a column or beam, so that it takes a lot of work to install the anchors and the anchors for joining. In the case of driving into a pillar or the like, it was impossible for the residents and users of the building to perform seismic reinforcement work with the noise and vibration.
[0005]
The subject of this invention is solving the problem based on the method of fixing an anchor as a main body as mentioned above.
[0006]
[Means for Solving the Problems]
To achieve the above object, according to one aspect of the present invention, there is provided a seismic reinforcement method for a building in which unit blocks are stacked in a plane surrounded by pillars, beams and floors of a building to form a block stacking wall. Adhering with the adhesive material to integrate the block stacking wall, and also bonding the outer peripheral surface of the block stacking wall and the surrounding columns, beams and floor with the adhesive material to integrate It is a feature. According to the present invention, the fixing to the pillars around the block stacking wall is performed firmly with the adhesive material, so that it does not take time and effort like anchor mounting, and is simple. Since each unit block is also integrated by the adhesive material, it does not take time and effort. Furthermore, since there is no problem of noise or vibration in the case of anchor driving, a resident or the like can work while living.
[0007]
Another aspect of the invention is the above invention, wherein the block stacking wall has a honeycomb structure. With this honeycomb structure, a lightweight and high-strength earthquake-resistant wall can be obtained.
[0008]
In another aspect of the invention, the unit block has a structure in which one diagonal line of a square frame is connected by a connecting portion. According to this square block, not only reinforcement in the up / down / left / right direction but also reinforcement in an obliquely intersecting direction can be made directly by the connecting portion.
[0009]
In another aspect of the invention , there is provided a seismic reinforcement method for buildings in which unit blocks are stacked in a plane surrounded by pillars, beams and floors of a building to form a block stacking wall. Ri from partitioned square tube structure formed, the made two partitioning steel plates away from each other, the concrete is fastened by male and female fastening structure units between blocks that have been filled blocks stacked wall between the partition steel plates In addition to being integrated, the outer peripheral surface of the block stacking wall and each of the surrounding columns, beams and floor are bonded and integrated with an adhesive material. Thereby, while being able to form a seismic wall easily using a steel plate, the effort of anchor attachment does not start. When only a plate-shaped steel plate is used, the resistance to the shearing force is small. However, in the present invention, the partition plate portion is reinforced by the surrounding rectangular tube portion, so that the risk of buckling can be reduced. Moreover, the merit which can use each unit block which consists of square cylinder structures as a storage box is also acquired.
[0010]
Furthermore, the invention of this aspect is characterized in that the unit block is composed of two sheets in which the partition steel plates are separated from each other, and concrete is filled between the partition steel plates. By using this concrete-filled unit block, the risk of buckling can be further reduced.
[0011]
In another aspect of the invention , there is provided a method for seismic reinforcement of a building in which unit blocks are stacked in a plane surrounded by pillars, beams and floors of the building to form a block stacking wall, and the blocks are fastened by a fastening structure. The block stacking wall is integrated and the outer peripheral surface of the block stacking wall and each of the surrounding columns, beams and floor are also bonded and integrated with an adhesive material. .
[0012]
In another aspect of the invention , there is provided a method for seismic reinforcement of a building in which unit blocks are stacked in a plane surrounded by the pillars, beams and floor of the building to form a block stacking wall. First, the steel plate is bonded to the pillars, beams and floor. A steel plate frame is formed by bonding with a material, and a steel plate is fixed to the steel plate frame as an in-plane core surrounded by the steel plate frame, and a unit concrete block is bonded and fixed to the core steel plate with an adhesive material. The block stacking wall is formed while loading. According to the present invention, a steel plate frame is firmly fixed to a column or a beam by an adhesive material, and a unit concrete block is bonded to the steel plate as a core material fixed to the steel plate frame while being bonded and fixed with an adhesive material. As a result, it is possible to obtain a strong earthquake resistant wall that is similar to concrete with reinforcing bars.
[0013]
In another aspect of the invention, in the seismic reinforcement method for buildings, in which unit blocks are stacked in a plane surrounded by the pillars, beams and floors of the building to form a block stacking wall, the outer peripheral surface of the grid steel plate is first pillared, It is characterized in that it is bonded to a beam and a floor with an adhesive material, and a unit concrete block is put in each ramen of this lattice-shaped steel plate and is fixed by bonding with an adhesive material to form a block stacking wall. By using a combination of lattice steel plates and unit concrete blocks, and using an adhesive material for fixing them, the structure and assembly can be simplified and a strong earthquake resistant wall can be obtained.
[0014]
The invention of another aspect, the pillar of the building base of elongated brace ends, with and adhere to the four corners of the plane surrounded by the beams and the floor by an adhesive material provided with two brace diagonally The brace is rigid with respect to the compressive force applied to the brace by connecting the base with the base located at both ends of the brace only on one end side of the base at the nut fastening portion. It is a seismic reinforcement method for buildings, characterized in that it is constructed in a rigid and flexible structure to follow flexibly . As a result, the problem of noise and vibration associated with driving of the joining anchor as in the conventional brace reinforcement method is eliminated.
[0015]
Furthermore, since the brace has a structure that is rigid in compressive force and flexibly follows tensile force, the following effects can be obtained. As described above, the rigid structure that resists compressive deformation, but conversely follows tensile deformation, can reliably function as a seismic element even in an earthquake in which deformation force is applied from multiple directions.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on examples shown in the drawings.
[Embodiment 1]
FIG. 1 is a front view showing a first embodiment, and FIG. 2 is an enlarged front view of a main part thereof. Unit blocks 5 are stacked in a plane surrounded by the pillars 1 and 2 of the building, the beams 3 and the floor 4 to form a block stacking wall 6. In this example, the unit block 5 is made of lightweight concrete having a specific gravity of about 1.2, and its shape is a regular hexagonal cylinder. Spiral streaks 8 are contained in the unit block 5 as a core material. The unit blocks 5 are bonded and integrated with an adhesive material 7 to form a block stacking wall 6 having a honeycomb structure. Daylighting is possible with a honeycomb structure. Then, the outer peripheral surface of the block stacking wall 6 and the surrounding pillars 1, 2, the beam 3, and the floor 4 are also bonded and integrated with the adhesive material 7. Here, the adhesive material is a strong adhesive material that is fast and hardenable.
[0017]
In addition, the outer peripheral surface of the block stacking wall 6 has an uneven shape, and a part that cannot be in surface contact with the surface of the opposing column or beam is generated. This part may be filled with an adhesive material or made of a lightweight block. The spacer 9 (see FIG. 2) may be interposed. In addition, the block stacking wall 6 is fixed to the pillars, beams and the like by the adhesive material 7, but a few anchors may be provided to assist the fixing force of the adhesive material.
[0018]
According to this example, the block stacking wall 6 is firmly fixed to a peripheral column or the like with the adhesive material 7, and each unit block is also integrated with the adhesive material. There is no problem, and further, it does not take time for installation.
[0019]
[Embodiment 2]
FIG. 3 is a front view showing another embodiment of the present invention. In this example, the unit block 5 has a structure in which one diagonal line of the square frame 10 is connected by a connecting portion 11. The material of the unit block 5 is lightweight concrete having a specific gravity of about 1.2. As shown in FIG. 4, two unit blocks 5 are bonded with an adhesive material. Then, the reinforcing bars 12 are arranged around the periphery and sequentially stacked, and are integrated as shown in FIG. That is, in the block stacking wall 6, the reinforcing bars 12 are arranged in a grid pattern, the unit blocks 5 exist in each square grid, and the unit blocks 5 and between the unit blocks 5 and the reinforcing bars 12 are bonded by an adhesive material. It is a structure. The block stacking wall 6 and the surrounding columns 1 and 2, the beam 3, and the floor 4 are firmly fixed by an adhesive material 7 through a frame frame 13.
[0020]
According to this square unit block 5, the frame 10 can be reinforced in the vertical and horizontal directions, and the connecting portions 11 are connected to form a plurality of reinforcing portions that intersect at an angle of 45 degrees. Reinforcement also has a sufficient structure.
[0021]
[Embodiment 3]
FIG. 5 is a front view showing another embodiment of the present invention, and FIGS. 6 and 7 are perspective views of a unit block making the earthquake-resistant wall of FIG. The unit block 5 in this example is composed of a steel plate rectangular tube 15 whose center in the depth direction is partitioned by a partitioning steel plate 14. A large number of bolts 16 project from the upper and left surfaces of the rectangular cylinder 15. In addition, a large number of holes 17 are formed in the lower and right surfaces so that the bolts 16 can be inserted. The unit blocks 5 are fastened together by a male-female fastening structure in which the bolts 16 of one block 5 are inserted into the holes 17 of the other blocks 5 and tightened with nuts (not shown) so that the block stacking wall 6 is integrated. It has become.
[0022]
However, the unit block 5 located on the outermost periphery of the block stacking wall 6 has a structure without the bolt 16, as shown in FIG. It is formed as follows. Adhesive material 7 is filled and fixed in a gap which becomes the surface contact portion. In this example, the block stacking wall 6 is fixed to the columns 1 and 2 and the beam 3 with the adhesive material 7, but a little anchor 18 is provided to assist the fixing force of the adhesive material 7. ing.
[0023]
Here, when the earthquake-resistant wall is formed using only a plate-shaped steel plate, the resistance to the shearing force is generally small. However, in the present invention, the partitioning steel plate 14 is reinforced by the rectangular cylindrical body 15 portion, so there is a risk of buckling. Can be reduced. Further, as can be seen from FIG. 5, each unit block 5 can be used as a storage box in the state of the completed earthquake-resistant wall. Further, as shown in FIG. 5, the unit block 5 may not be provided in a part of the seismic wall so that it can pass therethrough.
[0024]
[Embodiment 4]
FIG. 8 is a perspective view of a unit flock showing another embodiment of the present invention, and FIG. 9 is a perspective view of a unit block located on the outer peripheral portion of the block stacking wall. Basically, it has the same structure as the example shown in FIG. 6 and FIG. 7, but in this example, the partition steel plate 14 is composed of two pieces that are separated from each other, and concrete 19 is filled between the partition steel plates 14. Yes. Reference numeral 20 denotes a hole formed in the upper surface of the rectangular cylinder 15 for filling concrete. By using the unit block 5 filled with concrete, the risk of buckling can be further reduced as compared with the structure shown in FIG.
[0025]
[Embodiment 5]
FIG. 10 is a front view showing another embodiment of the present invention. In this example, the unit block 5 includes a cotter joint structure as an example of the fastening structure 21, and the blocks 5 are fastened together by the fastening structure 21 to integrate the block stacking wall 6. Since the other structure is the same as that shown in FIG.
[0026]
[Embodiment 6]
FIG. 11 is a cross-sectional view showing another embodiment of the present invention, FIG. 12 is a front view of an intermediate step, FIG. 13 is a side cross-sectional view, and FIG. 14 is a front view when completed. In this example, a steel plate frame 22 is first formed by adhering steel plates to columns 1, 2, beams 3 and floor 4 with an adhesive material 7. And the plate-shaped steel material 23 is fixed to the steel plate frame 22 as a core material in the surface enclosed by it. Note that the steel material 23 as the core material is not plate-shaped but may be any shape such as a rod. This fixing is performed by bolt-nut fastening. Then, the unit concrete block 5 is stacked on the core steel material 23 while being bonded and fixed with the adhesive material 7 to form the block stacking wall 6. In other words, the unit blocks 5 and the unit blocks 5 and the core material 23 are joined by the adhesive material 7. Here, the unit concrete block 5 is made of lightweight concrete. In this example, the steel frame 22 is fixed to the columns 1 and 2 and the beam 3 with the adhesive material 7, but a little anchor 18 is provided to assist the fixing force of the adhesive material 7. Yes.
[0027]
According to this example, the unit concrete block 5 is loaded onto the core steel material 23 attached to the steel plate frame 22 firmly fixed to the pillar or beam by the adhesive material 7 while being bonded and fixed with the adhesive material 7, and then the block stacking wall. 6 is formed, the shear strength is improved, and a seismic wall having a strength close to that of concrete with reinforcing bars is obtained. If the unit concrete blocks 5 are also bonded to each other with an adhesive material, a higher-strength block stacking wall 6 can be formed.
[0028]
[Embodiment 7]
15 is a transverse sectional view showing another embodiment of the present invention, FIG. 16 is a front view, and FIG. 17 is a side sectional view. In this example, first, the outer peripheral surface of the lattice-shaped steel plate 24 is bonded to the columns 1, 2, the beam 3 and the floor 4 with the adhesive material 7. Next, the unit concrete block 5 is put in each ramen of the lattice steel plate 24. The gaps between the blocks 5 and the grid steel plates 24 are filled with the adhesive material 7 and bonded and fixed to form an integrated block stacking wall 6. Since other structures are the same as the example shown in FIGS. 11 to 14, the same parts are denoted by the same reference numerals and description thereof is omitted.
[0029]
[Embodiment 8]
FIG. 18 is a front view showing another embodiment of the present invention. This example is applied to a so-called brace reinforcement method, and the bases 26 at both ends of the long brace 25 are bonded to the four corners in the plane surrounded by the pillars 1, 2, the beam 3 and the floor 4 of the building with the adhesive material 7. The two braces 25 are fixed and provided diagonally. Since the brace reinforcement of this example is also fixed and integrated around the periphery by the adhesive material 7, the problems of noise and vibration when using a conventional anchor are eliminated. Further, in this example, the brace 25 has a structure in which the nut 27 is provided only on one end side for connection with the base portion 26 and is rigid to compressive force and flexibly follows tensile force. Even in an earthquake in which deformation force is applied from multiple directions, the function as a seismic element can be surely exhibited.
[0030]
【The invention's effect】
According to the present invention, since the earthquake-resistant wall is basically fixed with an adhesive material, the problem based on the conventional method of fixing mainly an anchor can be solved.
[Brief description of the drawings]
FIG. 1 is a front view showing a first embodiment of the present invention.
FIG. 2 is an enlarged front view of the main part of FIG.
FIG. 3 is a front view showing another embodiment of the present invention.
4 is a cross-sectional view of the main part of FIG. 3;
FIG. 5 is a front view showing another embodiment of the present invention.
6 is a perspective view of a unit block making the earthquake resistant wall of FIG. 5. FIG.
7 is a perspective view of another unit block making the earthquake-resistant wall of FIG. 5. FIG.
FIG. 8 is a perspective view of a unit block showing another embodiment of the present invention.
FIG. 9 is a perspective view of another unit block showing another embodiment of the present invention.
FIG. 10 is a front view showing another embodiment of the present invention.
FIG. 11 is a cross-sectional view showing another embodiment of the present invention.
12 is a front view of an intermediate step of the embodiment of FIG. 11. FIG.
13 is a side sectional view of the embodiment of FIG.
14 is a front view when the embodiment of FIG. 11 is completed. FIG.
FIG. 15 is a cross-sectional view showing another embodiment of the present invention.
16 is a front view of the embodiment of FIG.
17 is a side sectional view of the embodiment of FIG.
FIG. 18 is a front view showing another embodiment of the present invention.
[Explanation of symbols]
1, 2 Column 3 Beam 4 Floor 5 Unit block 6 Block stacking wall 7 Adhesive material 14 Partition steel plate 15 Square cylinder 16 Bolt 17 Hole 19 Concrete 21 Fastening structure (cotter joint structure)
22 Steel frame 23 Core steel plate 24 Grid steel plate 25 Brace

Claims (3)

Pillar of the building, in earthquake-proof reinforcement method for the building for forming a beam and block masonry walls are loading unit block in a plane surrounded by the bed, Ri formed from rectangular tubular structure substantially centrally partitioned by a partition steel in the depth direction consists two said partition steel sheet are separated from each other, the concrete is a unit block each other that have been filled with fastened with male and female fastening structure with integrated block masonry walls between the partition steel plates, the blocks stacked wall A method for seismic reinforcement of a building, characterized in that the outer peripheral surface and each of the surrounding columns, beams and floors are integrated by bonding with an adhesive material.   In the seismic reinforcement method for buildings, in which unit blocks are stacked in a plane surrounded by pillars, beams and floors of the building to form block pile walls, the outer peripheral surface of the grid steel plate is first bonded to the pillars, beams and floors with an adhesive material. A method for seismic reinforcement of a building, characterized in that a unit concrete block is placed in each ramen of the lattice-shaped steel plate, and a block stacking wall is formed by bonding and fixing with an adhesive material. Two braces are provided diagonally by adhering and fixing the bases of both ends of the brace to the four corners in the plane surrounded by the pillars, beams and floor of the building with an adhesive material , and the braces are located at both ends of the brace. The connection with the base is provided with a nut only at one end side of the base at the nut fastening portion, and is configured to be rigid to compress force applied to the brace and flexibly follow the pull force. seismic reinforcement method for the building, characterized in that is.

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