JP3690446B2 - Seismic isolation device covering structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a covering structure for a seismic isolation device that prevents water from entering the seismic isolation device provided in a building structure.
[0002]
[Prior art]
Conventionally, as a structure for which earthquake countermeasures have been taken, the entire building is separated from the foundation and floated, and laminated rubber as an isolator is inserted between the lower end of the building and the foundation, from the building and its supporting part. There are known seismic isolation structures in which the natural frequency of the vibration system is reduced. According to this structure, the natural period of the building becomes longer than the dominant period of the seismic wave due to the insertion of laminated rubber, so the seismic force acting on the upper building can be reduced and the safety of the building can be ensured. it can.
[0003]
[Problems to be solved by the invention]
By the way, in the said conventional seismic isolation apparatus, since the said seismic isolation apparatus became the structure exposed outside, there existed problems, such as a water drop adhering to a seismic isolation apparatus at the time of rain, and corroding a metal member.
In addition, in recent years, a fireproof coating has been provided around the seismic isolation device at the place where this type of seismic isolation device is installed. There was a problem such as deteriorating.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a seismic isolation device covering device that prevents water droplets or the like from entering the seismic isolation device from the outside.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the following means have been taken in the covering structure of the seismic isolation device of the present invention.
That is, according to the seismic isolation device covering structure according to claim 1, the upper column is provided on the lower surface of the upper structure, and the lower column is provided on the upper surface of the lower structure. A seismic isolation device covering structure provided in between, wherein a fireproof coating is provided outside the seismic isolation device so as to surround the seismic isolation device, and an opening between the upper column and the lower column Is provided with a panel so as to further cover the fireproof covering covering the seismic isolation device, and the panel is supported by the upper column so that the upper end of the panel can swing freely with a substantially horizontal axis, and in a normal state. The urging member is urged in a direction to close the opening.
In this covering structure, in the normal state, the panel closes the opening between the upper column and the lower column, thereby preventing intrusion of water droplets or the like to the fireproof coating or the seismic isolation device side.
When vibration is applied to the lower structure due to an earthquake or the like, the vibration is attenuated by the seismic isolation device and transmitted to the upper structure. At this time, the panel follows the vibration and swings about the substantially horizontal axis, thereby preventing the panel itself from being destroyed.
[0006]
According to the seismic isolation device covering structure according to claim 2, in the seismic isolation device covering structure according to claim 1, the upper column and the lower column have a rectangular horizontal cross section, and each side surface is coplanar. The panel is provided in four openings formed between the side surfaces of the upper column and the lower column, and the upper end of the panel or the upper column is provided between them. A first gasket for sealing the panel is provided, and a lower gasket or a lower column of the panel is provided with a second gasket for sealing between them, and a side panel of each panel has an adjacent panel. And a third gasket for sealing between the two.
In this covering structure, since the gaskets are arranged at the upper and lower end side portions of the respective panels, the opening in the normal state is reliably sealed.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
5-7, the code | symbol 1 is the foundation (lower structure) of a building structure, and the code | symbol 2 is the upper structure of the building structure provided on this foundation 1. FIG.
A lower column 1A is formed on the upper surface of the foundation 1, and an upper column 2A is formed on the lower surface of the upper structure 2. Each of the lower pillar 1A and the upper pillar 2A has a horizontal cross section formed in a rectangular shape, and each side face is formed so as to coincide with each other on the same plane.
[0008]
A seismic isolation device 3 is interposed between the upper surface of the lower column 1A and the lower surface of the upper column 2A. The seismic isolation device 3 includes a laminated rubber in which a large number of rubber plates and steel plates are alternately laminated horizontally, and an upper support plate and a lower support plate provided at the upper end portion and the lower end portion of the laminated rubber. is there.
[0009]
Further, a fireproof coating 4 is provided outside the seismic isolation device 3 so as to surround the seismic isolation device 3. In this case, step portions 1B and 2B are formed at the upper end portion of the lower column 1A and the lower end portion of the upper column 2A, respectively, and the fireproof coating 4 includes the wall surface 1C of the step portion 1B and the wall surface 2C of the step portion 2B. It is fixed on the surface between.
[0010]
Furthermore, a panel 5 is disposed in the opening between the lower column 1A and the upper column 2A so as to cover the seismic isolation device 3. Details of the mounting state of the panel 5 are shown in FIGS.
An upper frame 6 is fixed to the wall surface 2D of the step portion 2B, and a lower frame 7 is fixed to the wall surface 1D of the step portion 1B.
[0011]
An attachment fitting 8 is fixed to the lower surface of the upper frame 6, and the panel 5 is attached to the tip of the attachment fitting 8 via a hinge 9.
In this case, a rectangular opening W is formed between the upper frame 6 and the lower frame 7 between the side surface 1E of the lower column 1A and the side surface 2E of the upper column 2A.
[0012]
The panel 5 closes the rectangular opening W and is formed in a rectangular shape.
Further, the panel 5 protrudes rearward from the rectangular panel body 5A, an upper frame wall portion 5B provided to protrude rearward from the upper end portion of the panel main body 5A, and the lower end portion of the panel main body 5A. The lower frame wall portion 5C provided on the left side and the left and right side frame wall portions 5D provided on the side portions of the panel main body 5A.
[0013]
The upper frame wall 5B of the panel 5 has a rectangular vertical cross section, and a drain hole 5E is formed at a location closest to the panel body 5A of the upper frame wall 5B.
Further, the lower frame wall portion 5C of the panel 5 is provided so as to be inclined downward from the inside of the opening W toward the outside. A hole 5F is formed.
[0014]
The panel 5 has a mounting wall (not shown) provided at the upper end of the panel 5 fixed to the rotating shaft 9 </ b> A of the hinge 9.
[0015]
A gasket 10 is fixed to the upper surface of the upper frame wall portion 5B, so that the gap between the upper frame 6 and the upper end of the panel 5 is always closed.
A gasket 11 is provided on the front side of the lower frame 7, and the gap between the lower frame wall portion 5 </ b> C of the panel 5 is always closed by this.
Further, the side frame wall portion 5D of the panel 5 is provided with a gasket 12, which is normally in contact with the gasket 12 of the adjacent panel 5 so that the gap therebetween is always closed. Yes.
[0016]
Based on this configuration, the panel 5 is swingable about a pivot shaft 9 </ b> A in the substantially horizontal direction of the hinge 9. The hinge 9 incorporates an urging member 9B, whereby the lower end of the panel 5 is always urged in a direction to seal the space between the lower frame 7 and the gasket 11.
[0017]
Further, an entrance / exit adjustment member 13 is attached to the upper surface of the lower frame 7. The entrance / exit adjustment member 13 is provided with a door stop rubber 13b at the tip of the entrance / exit adjustment plate 13a. The entrance / exit adjustment plate 13a is fixed to the lower frame 7 by a screw 14, and the mounting position of the screw 14 is indicated by an arrow X. The position can be changed in the -Y direction, and the position in the XY direction of the lower end of the panel 5 can be adjusted by changing the mounting position.
[0018]
In the above configuration, the panel 5 is preferably made of stainless steel, and is preferably subjected to fluororesin baking coating.
In addition, the gaskets 10, 11, and 12 are preferably neoprene rubber because a water-stopping effect can be obtained satisfactorily.
[0019]
Next, the construction procedure of each part including the seismic isolation device 3 in the above configuration will be described.
As shown in FIG. 4 (A), after installing the lower pillar 1A, the seismic isolation device 3 is installed, and the upper pillar 2A is further provided thereon.
Next, as shown in FIG. 4B, a fireproof coating 4 is provided between the lower column 1A and the upper column 2A.
Then, as shown in FIG. 4C, the lower frame 7 is fixed to the upper surface of the lower column 1A, and the upper frame 6 is fixed to the lower surface of the upper column 2A.
Next, as shown in FIG. 4D, after attaching the gasket 11 to the lower frame 7, the panel 5 having the gaskets 10 and 12 attached to the upper frame 6 is attached to the upper frame 6.
By providing these four pieces in each opening W, the construction is completed as shown in FIG.
[0020]
Next, the operation of the covering structure of the seismic isolation device 3 having the above configuration will be described. The panel 5 is normally urged by the urging member 9B, so that the lower end of the panel 5 is urged toward the lower frame 7 via the gasket 11, and the lower end of the panel 5 and the lower frame 7 are urged. The gap between them is sealed. Therefore, even when a water droplet enters the vicinity of the lower column 1A or the upper column 2A during rain, the water droplet does not enter the fireproof coating 4 or the seismic isolation device 3 side.
[0021]
Then, as shown in FIG. 4 (F), when vibration is given to the lower structure 1 due to an earthquake or the like, particularly when horizontal vibration is given, this vibration is attenuated by the seismic isolation device 3. It is transmitted to the upper column 2 </ b> A in a state and transmitted to the upper structure 2. At this time, the panel 5 is swingable about the axis of the pivot shaft 9A of the hinge 9, so that the panel 5 rotates following the horizontal movement of the lower column 1A and the relative movement of the upper column 2A with respect to the lower column 1A. It swings around the axis of the moving shaft 9A.
[0022]
Therefore, the panel 5 is not destroyed when this vibration is applied. If a water droplet or the like has entered the interior, the moisture is discharged outward through a drain hole 5F formed in the lower frame wall 5c of the panel 5.
[0023]
In the above embodiment, the gasket 10 is provided on the upper frame wall portion 5B of the panel 5 and the gasket 11 is provided on the front surface side of the lower frame 7. However, the gasket 10 is provided on the wall surface 6B of the step portion 6A. The gasket 11 may be provided on the vertical wall surface 5G of the lower frame wall portion 5C.
[0024]
【The invention's effect】
According to the present invention, the following effects can be obtained. That is, since the panel is urged by the urging member in such a direction as to always close the opening, the part where the seismic isolation device is placed can be kept sealed in a normal state, and water droplets or the like enter the inside. This can be surely prevented.
In addition, in a structure where a normal seismic isolation device with rectangular upper and lower columns is provided, the four openings are each covered with a panel to reliably prevent water droplets from entering the fireproof coating or seismic isolation device side. can do.
[Brief description of the drawings]
FIG. 1 is an enlarged longitudinal sectional view of a main part of a building structure that employs a seismic isolation device covering structure according to the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
3 is a cross-sectional view taken along line BB in FIG. 1. FIG.
FIG. 4 is a process diagram showing a construction procedure of a seismic isolation device covering structure according to the present invention;
FIG. 5 is a front view of a building structure employing the seismic isolation device covering structure according to the present invention.
FIG. 6 is a longitudinal sectional view of a building structure adopting the seismic isolation device covering structure according to the present invention.
FIG. 7 is a cross-sectional view of a building structure employing the seismic isolation device covering structure according to the present invention.
[Explanation of symbols]
1 Foundation (substructure)
1A Lower column 2 Upper structure 2A Upper column 3 Seismic isolation device 5 Panel 9B Energizing member 10 Gasket (first gasket)
11 Gasket (second gasket)
12 Gasket (third gasket)
W opening

Claims (2)

An upper column is provided on the lower surface of the upper structure, and a lower column is provided on the upper surface of the lower structure, and a seismic isolation device covering structure provided between the upper column and the lower column,
On the outside of the seismic isolation device, a fireproof coating is provided so as to surround the seismic isolation device,
At the opening between the upper column and the lower column, a panel is disposed so as to further cover the fireproof coating covering the seismic isolation device, and the upper end of the panel has a substantially horizontal axis. A seismic isolation device covering structure characterized in that it is swingably supported by an upper column and is normally biased in a direction to close the opening by a biasing member. The seismic isolation device covering structure according to claim 1,
The upper column and the lower column are formed such that the horizontal cross section is rectangular, and each side surface is formed on the same plane,
The panel is provided in each of four openings formed between the side surfaces of the upper column and the lower column,
On the upper end of the panel or the upper column side, a first gasket is provided for sealing between them,
On the lower end of the panel or the lower column side, a second gasket is provided for sealing between them,
A seismic isolation device covering structure, wherein a side gasket of each panel is provided with a third gasket for sealing between adjacent panels.

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