JPH10331478A - Vibration-resistant structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that a huge repair cost is required to restore walls integrally constructed as a part of a building when the building is protected by making the wall itself collapse to absorb the vibration energy of an earthquake. SOLUTION: A plate 14 parallel to the plane of one 10a of adjacent earthquake-resistant walls is provided in the wall 10a so as to extend to the other earthquake-resistant wall 10b. And also a plate parallel to the plane of the other earthquake-resistant wall 10b is provided in the wall 10b to extend to the wall 10a. And these plates 10a, 10b are combined so as to suporpose with each other. A viscoelastic material is put in the gap between these plates and a damper structure is formed between the respective earthquake-resistant walls 10a, 10b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake-resistant structure of an adjacently constructed building structure.

[0002]

2. Description of the Related Art Technologies such as a multi-story earthquake-resistant wall and a multi-story brace structure are one of the so-called bearing structures that can withstand the shaking of an earthquake, and are a means of seismic reinforcement for an adjacently constructed building structure.

[0003]

In a conventional multi-story earthquake-resistant wall or multi-story brace structure, a part of the wall is formed as an energy absorbing material for a large-scale earthquake. This absorbs the vibration energy caused by the earthquake by destroying the wall itself, but a large repair cost is required to restore the wall built integrally as a part of the building structure to its original state Was necessary. In addition, an earthquake-resistant wall is provided on the opposite side of the adjacent building structure, reinforced concrete beams are connected between the earthquake-resistant walls, and the building structures are connected to each other. Absorption method (Coupl
Although there is ed ShearWall Type, there is a problem that reinforced concrete beams are severely damaged at the time of an earthquake and need to be repaired after the earthquake.

The present invention has been made in view of the above circumstances, and effectively absorbs vibration energy acting on a building structure due to an earthquake and reduces the cost required for repairing damage caused by a large-scale earthquake. It is intended to provide an earthquake-resistant structure of a building structure that can be suppressed.

[0005]

As means for solving the above-mentioned problems, as an upper layer of an adjacently constructed building structure, both walls are formed and are present in the same vertical plane. Adopt a seismic structure of the building structure which has a damper mechanism between the installed seismic walls. As this earthquake-resistant structure, a plate-like portion parallel to the surface direction of the adjacent earthquake-resistant wall is provided on one adjacent earthquake-resistant wall so as to project toward the other earthquake-resistant wall. A plate-like part parallel to the plane direction of the above is provided so as to project toward one of the earthquake-resistant walls, and a plate-like part provided on one of the earthquake-resistant walls and a plate-like part provided on the other of the earthquake-resistant walls are alternately arranged. In addition, the damper mechanism is arranged so as to overlap with each other, and a damper mechanism is provided between the two earthquake-resistant walls by interposing a viscous material or a viscoelastic material in a gap provided between the plate-shaped portions.

[0006] As another earthquake-resistant structure, a plate-like portion parallel to the surface direction of the precast wall is provided on one adjacent precast wall so as to project toward the other precast wall, and the other precast wall is provided on the other precast wall. A plate-like portion parallel to the surface direction of the precast wall is provided so as to project toward one precast wall, and a plate-like portion provided on one precast wall and a plate provided on the other precast wall. And a damper mechanism between both precast walls by interposing a viscous body or a viscoelastic body in a gap provided between the plate-like portions, while arranging the damper mechanism in such a manner as to alternately overlap with each other. Adopt something.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of an earthquake-resistant structure of a building structure according to the present invention will be described with reference to FIGS.
FIGS. 1 and 2 show the upper layers of two building structures constructed adjacent to each other. These building structures have an earthquake-resistant wall 10 which constitutes both wall surfaces and exists in the same vertical plane. Is installed in each. Both the earthquake-resistant walls 10 are formed integrally with the upper and lower floor slabs 11 and columns 12, and a damper mechanism 13 using a viscoelastic body is provided between the earthquake-resistant walls 10.

The structure of the damper mechanism 13 is as follows. First, on one adjacent earthquake-resistant wall 10a, three steel plates (plate-like portions) 14 are parallel to the surface direction of the earthquake-resistant wall 10a and spaced from each other from the edge toward the other earthquake-resistant wall 10b. It is arranged. These plates 14 are formed integrally with a steel plate 15 provided on the end face of the earthquake-resistant wall 10a. An anchor plate 16 is integrally formed on a side of the steel plate 15 that is different from the side on which the plate 14 is formed. The anchor plate 16 is embedded in the earthquake-resistant wall 10a and connected to an anchor bar 17 provided inside. Each plate 14 is fixed to the earthquake-resistant wall 10a by welding.

The other earthquake-resistant wall 10b has two steel plates (plate-like portions) from its edge toward one earthquake-resistant wall 10a.
Numerals 18 are arranged parallel to the plane direction of the earthquake-resistant wall 10b and spaced from each other. These plates 18 are for the shear wall 10
It is formed integrally with the steel plate 19 disposed along the end face of the b. An anchor plate 20 is integrally formed on a side of the steel plate 19 which is different from the side on which the plate 17 is formed. The anchor plate 20 is embedded in the earthquake-resistant wall 10b and connected to an anchor bar 21 disposed inside. Each plate 18 is fixed to the earthquake-resistant wall 10b by welding.

The plate 14 provided on the earthquake-resistant wall 10a and the plate 18 provided on the earthquake-resistant wall 10b are
Each is combined so that they are staggered,
A gap 22 is provided between the plates 14 and 18. A viscoelastic body 23 is interposed in each of the gaps 22 in the vertical direction of the earthquake-resistant wall 10. The viscoelastic body 23 is made of a material such as rubber alphalt or high attenuation rubber.

[0011] Makeup is applied as needed between the earthquake-resistant walls 10 on which the damper mechanism is provided. In addition, a slab streak 11a is buried between the floor slabs 11 of the adjacent building structures while being erected, and joints of the floor slab 11 are filled with mortar 11b. Thus, adjacent building structures form one space inside, and are apparently constructed as one building structure.

When an earthquake acts on a building structure constructed as described above, adjacent building structures undergo relative deformation as shown in FIG. That is, a relative displacement parallel to the plane direction (the direction of arrow A in the drawing) is generated between the plate 14 provided on the earthquake-resistant wall 10a and the plate 18 provided on the earthquake-resistant wall 10b. The viscoelastic body 23 interposed between 18 is deformed in the shear direction and absorbs vibration energy acting on the building structure.

As described above, due to the effect of absorbing the vibration energy by the viscoelastic body 23, the seismic response of the adjacently constructed building structure can be reduced. Viscoelastic body 23
The advantage of using the damper mechanism 13 for the damper mechanism 13 is that the damping performance is exhibited regardless of the magnitude of the amplitude from a small amplitude to a large amplitude, and it can be procured at relatively low cost. From this, it can be seen that it is very effective in terms of performance and cost in constructing an earthquake-resistant structure.

Since the damper mechanism 13 is installed on the upper layer of the building structure using the multi-story earthquake-resistant wall straddling each floor of the building structure, the energy absorption can be performed while the deformation of each floor of the building structure is smooth. It is possible, and it is possible to prevent the deformation from being concentrated on a specific hierarchy. In addition, by arranging the damper mechanism 13 at the upper part of the building structure, the cost can be reduced as compared with the case where the earthquake-resistant structure is constructed at each level.

Further, when the magnitude of the earthquake is large and the vibration energy cannot be absorbed only by the damper mechanism 13,
It is also possible to make a transition so that the shear wall itself absorbs energy.

In this embodiment, the viscoelastic body 23 is used for the damper mechanism 13. However, the present invention is not limited to this.
A viscous damper using oil or the like may be adopted according to the form or design specification of the building structure. In this case, the oil is desirably used by being enclosed in a deformable container. The specifications of the number of plates provided on both the earthquake-resistant walls and their arrangement can be changed as appropriate.

Next, a second embodiment of the earthquake-resistant structure of a building structure according to the present invention will be described with reference to FIGS. Each figure shows the upper layers of two adjacent building structures, each of which has a precast plate 30 which constitutes both walls and is present in the same vertical plane. is set up. The two precast plates 30 are joined to the same precast plate 30 ′ located above and below and the left and right pillars 31 via connecting hardware 32 to form a wall, and a viscoelastic body is used between these precast plates 30. A damper mechanism 33 is provided.

The structure of the damper mechanism 33 is as follows. First, on one adjacent precast plate 30a,
A plate-like portion 34 parallel to the plane direction is provided so as to project toward the other precast plate 30b. Also,
The other precast plate 30b is provided with a plate-shaped portion 35 parallel to the surface direction thereof so as to project toward the one precast plate 30a.

The plate-shaped portions 35 provided on the precast plate 30b are inserted between the plate-shaped portions 34 provided on the precast plate 30a, and are combined so as to overlap each other. Are arranged with a gap 36 therebetween. A viscoelastic body 37 is interposed in each of the gaps 36 in the vertical direction of the precast plate 30. The viscoelastic body 37 is made of a material such as rubber alphalt or high attenuation rubber.

Each of the precast plates 30 is connected to upper and lower precast plates 30 'and left and right pillars by connecting hardware 32.
Are joined through. The precast plate 30 '(or pillar 31) side, the precast plate 3
A small steel plate 39 welded to the anchor bar 38 is provided on both sides of the zero side, and a welding plate 40 is welded to the opposite small steel plate 39 in place and both are connected.

When an earthquake acts on the architectural structure constructed as described above and the adjacent architectural structure shakes, it is arranged on the plate-shaped portion 34 provided on the precast plate 30a and on the precast plate 30b. Since a relative displacement parallel to the plane direction is generated between the plate portion 35 and the plate portion 35, the viscoelastic body 37 interposed between the plate portions 34 and 35 is deformed in the shear direction, and the vibration acting on the building structure is generated. Absorb energy.

As described above, by constructing a wall between adjacent building structures using the precast plate 30 and providing the damper mechanism 33 between the precast plates 30, the same effect as in the first embodiment can be obtained. Can be obtained. Further, if the vibration energy cannot be absorbed only by the damper mechanism 33 due to the magnitude of the earthquake, the wall made of the precast plate 30 is broken and the vibration energy is absorbed. The structure can be restored and the precast version 30
Can be manufactured at a low cost with a simple configuration, so that it is possible to shorten the time required for restoration and reduce costs.

The joint between the precast plate 30 and the upper and lower precast plates 30 'and the left and right columns 31 is not limited to welding as in the present embodiment, but may be a one-touch joint, a threaded joint using a cap nut, or the like. Similar connecting means may be employed.

[0024]

As described above, according to the earthquake-resistant structure of the building structure according to the present invention, the plate-shaped portion provided on one wall and the plate-shaped portion provided on the other wall are formed. The viscoelastic body interposed therebetween is deformed in the shearing direction and absorbs vibration energy acting on the building structure. As described above, the seismic response of the adjacently constructed building structure can be reduced by the effect of absorbing the vibration energy by the viscoelastic body.

Further, the damper mechanism is installed on the upper layer of the building structure using the multi-story earthquake-resistant wall straddling each floor of the adjacent building structure, so that the deformation of each floor of the building structure is smooth. Energy can be absorbed, and the deformation can be prevented from being concentrated on a specific level.

If the magnitude of the earthquake is so large that the vibration energy cannot be absorbed only by the damper mechanism, the wall made of the precast plate is destroyed and absorbs the vibration energy. Since the precast plate can be restored and the precast plate has a simple structure and can be manufactured at low cost, it is possible to shorten the period required for restoration and reduce costs.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of an earthquake-resistant structure of a building structure according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an explanatory diagram of a state in which the building having the earthquake-resistant structure shown in FIG. 1 is shaken.

FIG. 4 is a side view showing a second embodiment of the earthquake-resistant structure of a building structure according to the present invention.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

[Explanation of symbols]

 10a, 10b Earthquake-resistant wall 13 Damper mechanism 14, 18 Plate (plate-like part) 22 Gap 23 Viscoelastic body 30a, 30b Precast plate 33 Damper mechanism 34, 35 Plate-like part 36 Gap 37 Viscoelastic body

Claims (2)

[Claims] 1. A damper mechanism is provided on an upper layer of an adjacently constructed building structure, the damper mechanism being provided between both seismic walls, which constitute both wall surfaces and are located in the same vertical plane. An earthquake-resistant structure of a building structure, wherein a plate-like portion parallel to a surface direction of the adjacent earthquake-resistant wall is provided on one adjacent earthquake-resistant wall so as to project toward the other earthquake-resistant wall,
On the other earthquake-resistant wall, a plate-shaped portion parallel to the surface direction of the earthquake-resistant wall is provided so as to project toward one of the earthquake-resistant walls, and the plate-shaped portion provided on one of the earthquake-resistant walls and the other of the earthquake-resistant wall are provided. Are arranged in such a manner as to be alternately overlapped with the plate-shaped portions provided on the base plate, and a viscous or visco-elastic material is interposed in a gap provided between the plate-shaped portions so that both of them are earthquake-resistant. A vibration damping structure for a building structure, wherein a damper mechanism is formed between walls. 2. A damper mechanism is provided on an upper layer of an adjacently-built building structure, the damper mechanism being provided between precast walls which constitute both wall surfaces and are located in the same vertical plane and are respectively installed. The precast wall adjacent to one of the precast walls is provided with a plate-like portion parallel to the surface direction of the precast wall so as to project toward the other precast wall; In
A plate portion parallel to the plane direction of the precast wall is provided so as to project toward one precast wall, and a plate portion provided on one precast wall and a plate provided on the other precast wall. And a viscous or visco-elastic body are interposed in the gaps provided between the plate-shaped parts, so that a damper mechanism is provided between both precast walls. A vibration damping structure for a building structure, characterized by having a structure.