JPH0229168Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Field of industrial application) This invention relates to a seismic isolation structure with a basement.

(Problem that the invention aims to solve) Buildings equipped with seismic isolation devices have extremely large horizontal displacements compared to ordinary buildings without seismic isolation devices, so when installing a basement, it is necessary to install an earth retaining wall around the perimeter of the basement. It is necessary to create a large gap between the building and the basement to avoid collision with the building's retaining wall during an earthquake.

However, if gaps are created around the perimeter of the basement, there is a risk that rainwater will enter and objects or animals may fall into it.

This idea was made in order to deal with the new problem that would arise when installing a basement, and it was an attempt to solve this problem by making improvements to the structure of the building and how to create gaps.

(Means for solving the problem) In this invention, the base isolation structure has a structure in which the ground floor is cantilevered outward from the basement, and the outer circumferential wall of the ground floor is located above the ground surface, so that it can be installed in the gap. Prevent rainwater from entering and objects from falling.

The outer periphery of the basement will be secured with a retaining wall, and a rainproof wall will protrude from the top of the retaining wall to prevent rainwater from entering.

Gaps are between retaining walls, basement walls, ground floor slabs,
They are continuously provided between rainproof walls, between rainproof walls and the outer peripheral wall on the ground floor, and between the outer peripheral wall on the upper and basement floors and the ground surface, and the width of the horizontal gap is determined according to the amount of horizontal displacement of the building, and the width of the vertical gap is Similarly, the width of the gap is determined depending on the amount of vertical displacement.

(Example) The present invention will be described below based on drawings showing an example.

The seismic isolation structure A of this invention is a building in which a seismic isolation device 3 is installed between the foundation 1 and the pine slab 2, as shown in Figure 1, and the ground floor B protrudes from the basement C to the outer periphery. Outer wall 4b of floor B and ground surface G
A gap g is continuously provided between the outer circumferential wall 5c of the basement C and the earth retaining wall 6.

Ground floor B protrudes from basement C by outer peripheral wall 4
b. This is to close the gap 5g between the basement outer peripheral wall 5c and the retaining wall 6 with the floor slab 7, and the outer peripheral wall 4b is connected to the retaining wall 6.
located outside of.

A rainproof wall 6a is protruded from the upper end of the retaining wall 6 and rises from the ground surface G to prevent rainwater from entering the gap 5g.

As shown in FIG. 2, a floor slab 7 protrudes above the retaining wall 6, and the lower surface of the floor slab 7 and the rainproof wall 6
A gap 7g is provided between the upper surfaces of the upper surface, which is continuous with the gap 5g.

The outer peripheral wall 4b has a small wall 4b' downward in the shape of a wall beam, and there is a gap of 6 g between the small wall 4b' and the rainproof wall 6a, and a gap of 4 g between the lower surface of the small wall 4b' and the ground surface G. will be provided.

The above gaps 5g, 7g, 6g, 4g are all continuous, the horizontal gaps 5g, 6g are relatively large, and the vertical gaps 7g, 4g are relatively small. Specifically, the horizontal gap is 5g, 6g
The width of the gaps 7g and 4g in the vertical direction is determined based on the maximum horizontal displacement of the building during an earthquake, while the widths of the vertical gaps 7g and 4g are determined based on the maximum vertical displacement in consideration of rocking.

(Effects of the invention) As described above, this invention makes it possible to install a basement in a seismic isolation structure by securing the necessary gaps in each part, and the associated damage such as rainwater infiltration and falling objects These problems will be solved by the ground floor outer peripheral wall and rainproof wall.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a partially enlarged sectional view thereof. A: Seismic isolation structure, B: Ground floor, C: Basement, G:
Ground surface, 1: Foundation, 2: Pine slab, 3: Seismic isolation device, 4b: Peripheral wall, 4b': Small wall, 5c: Basement peripheral wall, 6: Retaining wall, 6a: Rainproof wall, 7: Floor slab,
4g, 5g, 6g, 7g: Gap.

Claims (1)

[Scope of utility model registration request] It is a seismic isolation structure with a basement where a seismic isolation device is installed between the building foundation and the pine slab.
The ground floor protrudes from the basement to the outer periphery, and there is a retaining wall on the outer periphery of the basement with a rainproof wall protruding from the upper end to prevent rainwater from entering, and between the basement outer peripheral wall and between the rainproof wall and the ground floor outer peripheral wall. In the horizontal direction, there is a gap corresponding to the amount of horizontal displacement of the building, and in the vertical direction, there is a gap corresponding to the amount of vertical displacement of the building between the ground floor slab and the rainproof wall and between the ground floor outer peripheral wall and the ground surface. A seismic isolation structure characterized by being provided in succession.