JP3733501B2 - Seismic structure of building structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an earthquake resistant structure of a building structure constructed adjacently.
[0002]
[Prior art]
Technologies such as multi-story shear walls and multi-story brace structures are one of so-called load-bearing structures that can withstand earthquake shaking, and are means of seismic reinforcement for building structures built adjacent to each other.
[0003]
[Problems to be solved by the invention]
In conventional multi-story shear walls and multi-story brace structures, some of the walls are configured as energy absorbers for large-scale earthquakes. This is to absorb the vibration energy acting by the earthquake by destroying the wall itself, but it takes a lot of repair costs to restore the wall body built as a part of the building structure to its original state. There was a problem that was necessary.
In addition, a seismic wall is provided on the opposite side of a building structure that is built adjacent to it, and reinforced concrete beams are provided between the seismic walls to connect the building structures together. There is also a method of absorption (Coupled Shear Wall Type), but there is a problem that a reinforced concrete beam is severely damaged during an earthquake and needs to be repaired after the earthquake.
[0004]
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 suppresses the cost required for repairing damage caused by a large-scale earthquake at a low cost. The purpose is to provide a seismic structure for building structures.
[0005]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems, an earthquake-resistant structure of a building structure constructed at the upper layer of two building structures constructed adjacent to each other is adopted. As this seismic structure, each building structure is provided with seismic walls that constitute both wall surfaces and exist in the same vertical plane, and each seismic wall is provided for each individual building structure. Each of the seismic walls formed integrally with the floor is provided on one adjacent seismic wall so that a plate-like portion parallel to the surface direction of the seismic wall extends toward the other seismic wall, A plate-like portion parallel to the surface direction of the earthquake-resistant wall is provided so as to project toward one earthquake-resistant wall, a plate-like portion provided on one earthquake-resistant wall, and a plate-like portion provided on the other earthquake-resistant wall; Are arranged so as to overlap each other, and a viscous body or a viscoelastic body is interposed between the upper and lower floor slabs in the gap provided between the plate-like portions, so that the two seismic walls are interposed between them. constitute a damper mechanism, the damper mechanism, building structures upper portion To adopt shall be installed each on each floor of the earthquake-resistant walls.
[0006]
As another seismic structure, each building structure is equipped with a precast wall that constitutes both wall surfaces and exists in the same vertical plane, and each precast wall is provided in each building structure. Each of the adjacent precast walls is formed integrally with an individual floor, and a plate-like portion parallel to the surface direction of the precast wall is provided so as to project toward the other precast wall. The plate-shaped portion parallel to the surface direction of the precast wall is provided so as to project toward one precast wall, and the plate-shaped portion disposed on one precast wall and the other precast wall are disposed. together, the gap provided between the plate-like portion over the viscous body or the viscoelastic body between the upper and lower floor slab interposed arranged in combination so as to overlap alternately a plate-like portion Constitute a damper mechanism in both precast walls by Rukoto, the damper mechanism is adopted which respectively installed on each floor of the precast walls of the building structure upper portion.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of a seismic structure for a building structure according to the present invention will be described with reference to FIGS.
FIG. 1 and FIG. 2 show the upper layer portions of two building structures constructed adjacent to each other, and these building structures include the seismic walls 10 constituting both wall surfaces and existing 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 the columns 12, and a damper mechanism 13 using a viscoelastic body is provided between the earthquake-resistant walls 10.
[0008]
The configuration of the damper mechanism 13 is as follows. First, in 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 to the other earthquake-resistant wall 10b. Arranged. These plates 14 are integrally formed with a steel plate 15 provided on the end face of the earthquake resistant wall 10a. The steel plate 15 is integrally formed with an anchor plate 16 on a side surface different from the side surface on which the plate 14 is formed. The anchor plate 16 is embedded in the earthquake-resistant wall 10a and is attached to an anchor bar 17 disposed inside. Each plate 14 is being fixed to the earthquake-resistant wall 10a by welding.
[0009]
On the other earthquake-resistant wall 10b, two steel plates (plate-like portions) 18 are arranged in parallel to the surface direction of the earthquake-resistant wall 10b and spaced apart from each other toward the one earthquake-resistant wall 10a. Yes. These plates 18 are formed integrally with a steel plate 19 disposed along the end face of the earthquake resistant wall 10b. The steel plate 19 is integrally formed with an anchor plate 20 on a side surface different from the side surface on which the plate 17 is formed. The anchor plate 20 is embedded in the earthquake-resistant wall 10b and is attached to an anchor bar 21 disposed inside. Each plate 18 is being fixed to the earthquake-resistant wall 10b by welding.
[0010]
And the plate 14 arrange | positioned at the earthquake-resistant wall 10a and the plate 18 arrange | positioned at the earthquake-resistant wall 10b are combined so that it may mutually overlap, and it arrange | positions by providing the gap | interval 22 between each plate 14,18. ing. A viscoelastic body 23 is interposed in each gap 22 over the length direction of the earthquake-resistant wall 10. The viscoelastic body 23 is made of a material such as rubber alphalt or high damping rubber.
[0011]
Makeup is provided between the earthquake-resistant walls 10 provided with the damper mechanism as necessary. In addition, the floor slabs 11 of adjacent building structures are buried between the floor slabs 11 with the slab bars 11a installed, and the joints of the floor slabs 11 are filled with mortar 11b. In this way, adjacent building structures form one space inside, and are apparently constructed as one building structure.
[0012]
When an earthquake acts on the building structure configured as described above, relative deformation occurs in adjacent building structures as shown in FIG. That is, relative displacement parallel to the surface direction (the direction of arrow A in the figure) is generated between the plate 14 disposed on the earthquake-resistant wall 10a and the plate 18 disposed on the earthquake-resistant wall 10b. The viscoelastic body 23 interposed between 18 deforms in the shear direction and absorbs vibration energy acting on the building structure.
[0013]
Thus, the seismic response of the building structure built adjacently can be reduced by the absorption effect of the vibration energy by the viscoelastic body 23. Advantages when the viscoelastic body 23 is used for the damper mechanism 13 include that the damping performance is exhibited regardless of the amplitude from small amplitude to large amplitude, and that it can be procured at a relatively low cost. From these, it can be seen that it is very effective in terms of performance and cost in constructing an earthquake resistant structure.
[0014]
By installing the damper mechanism 13 on the upper layer of the building structure using multi-layer earthquake resistant walls straddling each floor of the building structure, energy can be absorbed while the deformation of each floor of the building structure is smooth. , It is possible to prevent the deformation from acting on a specific hierarchy. In addition, by placing the damper mechanism 13 centrally on the upper layer of the building structure, the cost can be reduced as compared with the case where an earthquake-resistant structure is constructed at each level.
[0015]
Furthermore, when the magnitude of the earthquake is large and the vibration energy cannot be absorbed by the damper mechanism 13 alone, it is possible to shift so that the energy is absorbed by the seismic wall itself.
[0016]
By the way, in this embodiment, the viscoelastic body 23 was used for the damper mechanism 13, but the present invention is not limited to this, and a viscous damper using oil or the like may be employed according to the form of the building structure or the design specifications. Absent. In this case, it is desirable to use the oil enclosed in a deformable container.
In addition, the specifications can be changed as appropriate for the number of plates and the arrangement of the plates provided on both the shear walls.
[0017]
Next, 2nd Embodiment of the earthquake-resistant structure of the building structure which concerns on this invention is shown and demonstrated to FIG. 4, FIG.
Each figure shows the upper layer of two building structures built adjacent to each other, and each of these building structures has a precast plate 30 that constitutes both wall surfaces and exists in the same vertical plane. is set up. Both of the precast plates 30 are joined to a similar precast plate 30 ′ located on the upper and lower sides and the left and right columns 31 via connecting hardware 32 to form walls, and a viscoelastic body is used between the precast plates 30. A damper mechanism 33 is provided.
[0018]
The configuration of the damper mechanism 33 is as follows. First, one adjacent precast plate 30a is provided with a plate-like portion 34 parallel to the surface direction so as to protrude toward the other precast plate 30b. The other precast plate 30b is provided with a plate-like portion 35 parallel to the surface direction so as to project toward the one precast plate 30a.
[0019]
A plate-like portion 35 provided on the precast plate 30b is inserted between the plate-like portions 34 provided on the precast plate 30a and is combined so as to overlap each other. Is arranged. In each gap 36, a viscoelastic body 37 is interposed in the vertical direction of the precast plate 30. The viscoelastic body 37 is made of a material such as rubber alphalt or high damping rubber.
[0020]
By the way, each precast plate 30 is joined to the upper and lower precast plates 30 ′ and the left and right columns via a connecting hardware 32. In the joint portion, a small steel plate 39 welded to the anchor bar 38 is provided on both the precast plate 30 ′ (or column 31) side and the precast plate 30 side, and a welding plate 40 is attached to the opposing small steel plate 39. They are welded on site and both are connected.
[0021]
When an earthquake acts on a building structure configured as described above and a neighboring building structure shakes, the plate-like portion 34 provided on the precast plate 30a and the plate-like portion provided on the precast plate 30b Since relative displacement parallel to the surface direction is generated between the plate-like portions 35 and 35, the viscoelastic body 37 interposed between the plate-like portions 34 and 35 is deformed in the shear direction and absorbs vibration energy acting on the building structure. To do.
[0022]
In this way, by using the precast plate 30 to construct a wall between adjacent building structures and providing the damper mechanism 33 between the precast plates 30, the same effect as in the first embodiment can be obtained. . Furthermore, when the magnitude of the earthquake is large and vibration energy cannot be absorbed by the damper mechanism 33 alone, the wall made of the precast plate 30 is broken and absorbs vibration energy. However, by replacing the broken precast plate 30, the earthquake resistance is improved. The structure can be restored, and the precast plate 30 has a simple configuration and can be manufactured at a low cost. Therefore, it is possible to shorten the construction period and cost for restoration.
[0023]
By the way, the joint portion between the precast plate 30 and the upper and lower precast plates 30 ′ and the left and right pillars 31 is not limited to welding as in the present embodiment, but a screw-in joint using a one-touch joint or a cap nut, and other similar connections. Means may be employed.
[0024]
【The invention's effect】
As described above, according to the earthquake-resistant structure of a building structure according to the present invention, it is interposed between the plate-like portion provided on one wall body and the plate-like portion provided on the other wall body. The viscoelastic body deforms in the shear direction and absorbs vibration energy acting on the building structure. Thus, the seismic response of the building structure built adjacently can be reduced by the absorption effect of the vibration energy by the viscoelastic body.
[0025]
In addition, by installing a damper mechanism on the upper layer of the building structure using multi-layer earthquake resistant walls straddling each floor of adjacent building structures, energy absorption is achieved while the deformation of each floor of the building structure is smooth. It is possible and it can prevent that a deformation | transformation concentrates on a specific hierarchy.
[0026]
If the magnitude of the earthquake is large and vibration energy cannot be absorbed by the damper mechanism alone, the wall made of the precast plate will be destroyed to absorb the vibration energy, but the earthquake resistant structure will be restored by replacing the damaged precast plate. In addition, since the precast plate has a simple configuration and can be manufactured at low cost, it is possible to shorten the work period and cost for restoration.
[Brief description of the drawings]
FIG. 1 is a side view showing a first embodiment of a seismic structure for a building structure according to the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is an explanatory diagram of a state when shaking occurs in a building structure including the earthquake-resistant structure shown in FIG. 1;
FIG. 4 is a side view showing a second embodiment of the earthquake-resistant structure of the building structure according to the present invention.
FIG. 5 is a cross-sectional view taken along line VV in FIG. 4;
[Explanation of symbols]
10a, 10b Earthquake-resistant wall 13 Damper mechanism 14, 18 Plate (plate-shaped 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)

An earthquake-resistant structure of a building structure constructed in the upper layer of two building structures built adjacent to each other,
Each building structure is equipped with seismic walls that constitute both wall surfaces and exist in the same vertical plane,
Each seismic wall is formed integrally with each individual floor provided in each building structure,
One adjacent earthquake-resistant wall is provided with a plate-like portion parallel to the surface direction of the earthquake-resistant wall so as to protrude toward the other earthquake-resistant wall, and the other earthquake-resistant wall is provided in the surface direction of the earthquake-resistant wall. Parallel plate-shaped parts are provided so as to project toward one seismic wall,
The plate-like part provided on one earthquake-resistant wall and the plate-like part provided on the other earthquake-resistant wall are arranged in combination so as to alternately overlap, and in the gap provided between the plate-like parts, A damper mechanism is constructed between both earthquake-resistant walls by interposing a viscous body or viscoelastic body between the upper and lower floor slabs ,
The damping structure for a building structure, wherein the damper mechanism is installed between the earthquake-resistant walls on each floor of the upper layer of the building structure. An earthquake-resistant structure of a building structure constructed in the upper layer of two building structures built adjacent to each other,
Each building structure is equipped with a precast wall that constitutes both wall surfaces and exists in the same vertical plane,
Each precast wall is formed integrally with an individual floor provided for each building structure,
One adjacent precast wall is provided with a plate-like portion parallel to the surface direction of the precast wall so as to protrude toward the other precast wall, and the other precast wall is provided with a surface direction of the precast wall. Parallel plate-like parts are provided so as to project toward one precast wall,
The plate-like portion arranged on one precast wall and the plate-like portion arranged on the other precast wall are arranged in combination so as to overlap each other, and a gap provided between each plate-like portion A damper or viscoelastic body is interposed between the upper and lower floor slabs to form a damper mechanism between both precast walls .
The damping structure for a building structure, wherein the damper mechanism is installed between precast walls on each floor of the upper layer of the building structure.

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