JP3274282B2 - Mounting device for seismic isolation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gantry used for supporting an upper structure on a building foundation via a seismic isolation device. More specifically, the present invention relates to a gantry device embedded in a reinforced concrete foundation. And a level adjusting means for adjusting the mounting surface of the base to a predetermined level.

[0002]

2. Description of the Related Art In this type of mounting device for mounting a seismic isolation device,
In order for the seismic isolation device to exhibit its seismic isolation function well, it is necessary to accurately install the seismic isolation device at a predetermined level in a horizontal posture.
Therefore, a level adjusting means is required.

Conventionally, such a level adjusting means is constituted by a base 14 fixed to the lower end of the leg 6C of the gantry 6 via an anchor 13 on the upper surface of the discarded concrete 1 as shown in FIG. The level adjustment bolt 11 to be loaded is screwed, and the level adjustment bolt 11
The height of the leg 6C is changed by adjusting the amount of screwing, and the level of the seismic isolation device installation surface is adjusted.

[0004]

However, according to the above-mentioned conventional technique, although the level of the seismic isolation device installation surface can be adjusted, the level adjustment is performed at the foot of the gantry. When the form in which the level adjustment is performed after the foundation reinforcing work is performed is employed, the adjustment workability is poor. In other words, if the reinforcement work is performed after the level adjustment, the level adjustment state may be disrupted due to the reinforcement or the worker touching the gantry during the reinforcement work, whereas the level adjustment may be performed after the reinforcement work. For example, it is preferable to adopt a form in which the level adjustment is performed after the reinforcing work since the reinforcing work can be performed with good workability without such a thing at all, and it is generally performed. When the work mode is adopted, the reinforcing bars (rebars) are arranged in a congested manner around the level adjusting bolts, so that the bar is obstructed and the level adjusting bolts are hardly operated, that is, the adjusting operation is difficult. Met.

[0005] It is an object of the present invention to provide a gantry for mounting a seismic isolation device which can perform level adjustment with good workability even when reinforcing bars are congested around the gantry.

[0006]

Means for Solving the Problems The feature of the first invention the isolator mounting gantry device according to the present invention according to claim 1, in forming the frame, put into the reinforced concrete foundation
A lower anchor portion embedded and fixed inside the reinforcing member, and an upper mounting portion forming the seismic isolation device mounting surface,
A support means for supporting the mounting portion in a horizontal movement-restricted state on the anchor portion is provided, and in order to constitute the level adjusting means, the mounting portion is penetrated from above at each of a plurality of circumferential positions of the mounting portion peripheral portion. The lower end is screwed with a level adjusting bolt which is loaded and supported on the anchor portion at the lower end.

According to a second aspect of the present invention, there is provided a gantry for mounting a seismic isolation device according to the second aspect of the present invention, in the first aspect, wherein the support means is provided at each of a plurality of circumferential positions of the mounting portion. , is provided with a reaction force receiving portion projecting from above into the interior space surrounded by the anchor portions, in each of a plurality of circumferential locations of the frame portion located around the inner space of the anchor portion, the lateral outer frame portion A push bolt for restricting the horizontal position of the attachment portion with respect to the anchor portion by pushing the reaction force receiving portion inward at the inner end through the inner portion is screwed in.

[0008]

According to the first and second aspects of the present invention, by rotating the level adjusting bolt, the height of the portion of the mounting portion constituting the pedestal where the level adjusting bolt is screwed and mounted is higher than the anchor portion. Since it can be changed arbitrarily, it can be buried inside the reinforcing material inside the reinforced concrete foundation.
Irrespective of the fixing posture and the fixing height of the anchor portion to be embedded and fixed, the height of the seismic isolation device installation surface can be positioned at a predetermined level by changing the height using the level adjusting bolt.

As described above, since the level of the mounting surface of the seismic isolation device can be adjusted by the level adjusting bolt which penetrates from above and is screwed into the upper mounting portion of the mount, the level is adjusted. The adjustment bolt will be placed above the reinforcement of the reinforced concrete foundation, and as a result, even if the level adjustment is performed after the reinforcement, the operation on the level adjustment bolt will be hindered by the reinforcement. And can be performed in a wide place that is open upward.

[0010] In particular, according to the second aspect of the invention, since the restricting member for restricting the horizontal position of the mounting portion with respect to the anchor portion is constituted by a push bolt, a frame portion of the push bolt by rotating the push bolt, that is, By changing the inward and outward positions with respect to the anchor portion, the inner end of the push bolt, that is, the push position can be changed in the horizontal direction, and the horizontal position of the mounting portion with respect to the anchor portion can be changed. As a result, regardless of the fixed horizontal position of the anchor portion, the seismic isolation device installation surface can be positioned at the predetermined horizontal position by changing the position using the push bolt.

[0011]

Therefore, according to the present invention, even when an excellent work form in terms of the rebar arrangement work is adopted, in which the rebar arrangement work of the foundation is first performed around the gantry before the level adjustment is performed. In addition, the level adjustment of the installation surface of the seismic isolation device can be performed with good workability without being disturbed by the arrangement of the reinforcing bars.

[0012] In particular, according to the second aspect of the present invention, the push bolt for controlling the desired horizontal position of the mounting portion with respect to the anchor portion is also used as the bolt for adjusting the horizontal position, so that the mounting surface of the seismic isolation device is provided. The horizontal position adjusting means can be simply structured.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a seismic isolation building is a reinforced concrete foundation 2 made on abandoned concrete 1.
In addition, the upper structure 4 is configured to be loaded and supported via a plurality of seismic isolation devices 3 dispersedly arranged in a plan view.

The reinforced concrete foundation 2 is composed of a foundation body 2A and a load supporting projection 2B which is formed afterward so as to protrude upward from the foundation body 2A.

The seismic isolation device 3 has a laminated rubber 3C (natural rubber-based laminated rubber, lead-containing laminated rubber, high-damping laminated rubber, etc.) between an upper plate 3A and a lower plate 3B for mounting the upper structure 4. And is supported by the protrusion 2B of the reinforced concrete foundation 2 via the gantry device 5.

As shown in FIGS. 3 to 5, the gantry 5 is a gantry for loading and supporting a lower plate 3B of the seismic isolation device 3 at an upper part in a state of being embedded and fixed in the projecting portion 2B of the reinforced concrete foundation 2. 6 is provided, and level adjusting means for adjusting the mounting surface 6a of the gantry 6 so as to be positioned at a predetermined level is provided.
The gantry 6 is provided with a lower anchor portion 6A fixed to the projecting portion 2B, an upper mounting portion 6B, and a support means for supporting the mounting portion 6B on the anchor portion 6A in a horizontal movement restricted state. It is configured.

The anchor portion 6A is made of steel, and has a rectangular frame portion 6A1 having a rectangular shape in plan view.
And is fixed via an anchor bolt 7 embedded and fixed in the basic body 2A and a fixing nut 8 screwed thereto while being grounded to the basic body 2A by the leg 6A2. Things.

The mounting portion 6B forms the seismic isolation device mounting surface 6a from the upper surface, that is, a base plate 6B1 having a rectangular shape in plan view using a steel plate for loading and supporting the lower plate 3B of the seismic isolation device 3; This base plate 6
Near the four corners of B1, that is, at positions corresponding to the four corners of the rectangular internal space 6AS surrounded by the frame portion 6A1, the reaction force receiving portion 6B2 using a steel frame protrudes from above into the internal space 6AS. Are connected. Then, the seismic isolation device 3 is mounted on the base plate 6B1 via the plurality of bolts and nuts.
By fixing the lower plate 3B to B1, it is fixed to the gantry 6.

The supporting means is means for loading and supporting the mounting portion 6B on the anchor portion 6A by utilizing a level adjusting means which will be described in detail later. Each of the corners of the frame portion 6A1 is provided with a frame portion 6A1. And the push bolts 9 that regulate the horizontal position of the mounting portion 6B with respect to the anchor portion 6A by pushing the reaction force receiving portion 6B2 inward at the inner end by penetrating from the outside to the outside, that is, one reaction force receiving portion. It is configured to be screw-fitted to the portion 6B2 in a state corresponding to each pair.

Assuming that the horizontal direction along one side of the orthogonal sides of the frame 6A1 is the X direction and the direction along the other side is the Y direction, one of the pair of push bolts 9 is Pushes the reaction force receiving portion 6B2 inward in the X direction, and pushes the reaction force receiving portion 6B2 inward in the Y direction.

Therefore, when using this supporting means,
The pushing directions of the push bolts 9 mounted on the opposite sides of the frame 6A1 are opposite to each other, and the push bolt 9 pushing in the X direction is rotated to change the position of the inner end in the X direction with respect to the frame 6A1. This makes it possible to adjust the position of the mounting portion 6B in the X direction with respect to the anchor portion 6A, while changing the position in the Y direction of the inner end with respect to the frame portion 6A1 by rotating the push bolt 9 pushing in the Y direction. , Mounting part 6B
Can be adjusted in the Y direction with respect to the anchor portion 6A. The means for screwing the push bolt 9 to the frame 6A1 includes a nut 1 fixed to the frame 6A1 by welding or the like.
This is means for screwing the push bolt 9 to zero.

The level adjusting means penetrates the base plate 6B1 from above at each of the peripheral portions of the base plate 6B1 corresponding to the four corners of the frame 6A1, and the lower end thereof is loaded at the four corners of the frame 6A1 at the lower end. The adjusting bolt 11 is screwed and mounted. That is,
By rotating each level adjustment bolt 11 and changing the position of the lower end with respect to the base plate 6B1 in the vertical direction individually, the height of each of the level adjustment bolt mounting portions of the base plate 6B1 from the frame 6A1 is adjusted. The seismic isolation device mounting surface 6a is positioned at a predetermined level, and the seismic isolation device mounting surface 6a is configured to be positioned in a horizontal posture. The four level adjusting bolts 11 attach the mounting portion 6B to the anchor portion 6A. It is a leg to support the load. Base plate 6B of level adjustment bolt 11
1 includes a nut 12 fixed to the base plate 6B1 by welding or the like and a level adjustment bolt 11
Is a means for screw-fitting.

Next, the procedure for installing the gantry 5 will be described.

<1> After the foundation body 2A of the reinforced concrete foundation 2 has been produced and before the projection 2B has been produced, the projected portion is to be formed on the foundation body 2A, that is,
The anchor 6A of the gantry 6 is loaded and fixed at the place where the seismic isolation device is to be installed.

<2> As shown in FIGS. 5A and 5B,
Reinforcing bar 2a for protrusion 2B around anchor 6A
Of construction work. Reinforcement 2a is reinforced concrete foundation 2
It is embedded in a certain protrusion 2B,
An anchor portion 6A is embedded and fixed inside the material 2a.
You.

<3> As shown in FIG. 5 (c), the reaction force receiving portion 6B2 enters the inner space 6AS from above, and the lower end of the level adjusting bolt 11 is loaded on the anchor portion 6A. So that the anchor part 6
Load on A.

<4> Mounting part 6 by operating push bolt 9
The horizontal position of B is adjusted and the level is adjusted by operating the level adjusting bolt 11.

<5> Concrete projecting for forming the protruding portion is performed to form the protruding portion 2B in which the anchor portion 6A and the leg portion 6A2 of the mounting portion 6B are embedded and fixed, and the gantry 6 is embedded and fixed in the protruding portion 2B. I do.

According to the structure of the above embodiment, while the gantry 6 is divided into the anchor portion 6A and the mounting portion 6B, the reaction force receiving portion 6B2 is embedded and fixed in the concrete, thereby securing the mounting portion 6B. The level and position adjustment state is firmly fixed.

[Another Embodiment] In the above embodiment, the protrusion 2B of the reinforced concrete foundation 2 is used.
When the reinforced concrete foundation 2 is not provided with the protruding portion 2B, the anchoring portion is placed on the discarded concrete 1 on which the reinforced concrete foundation 2 is formed as shown in FIG. 6A is carried out with the load fixed.

In the above embodiment, the push bolt 9 is provided to adjust the horizontal position. However, the means for adjusting the horizontal position can be changed as appropriate. It may be implemented without any function.

In the above embodiment, the level adjusting bolt 11
The mounting portion 6B is configured to be loaded and supported on the anchor portion 6A via the through hole. However, separately from the level adjusting bolt 11, the loading support portion that is loaded and supported on the anchor portion 6A is connected to the mounting portion 6B.
It may be carried out in addition to the above.

When the reinforced concrete foundation 2 is prepared after the level adjustment and the horizontal position adjustment, the mounting portion 6B may be fixed to the anchor portion 6A by welding or the like, and the adjustment state may be fixed. In this case, it takes a little time, but since the adjustment state does not collapse due to the creation of the reinforced concrete foundation 2, it is not necessary to readjust it. Workability can be improved.

The anchor 6A and the mounting 6 of the gantry 6
The structure of B can be changed as appropriate.

In the above-described embodiment, the seismic isolation device 3 of the type in which the spring is supported by using the laminated rubber 3C has been described. It can also be used to support. In short, the structure of the seismic isolation device 3 to be loaded is not limited.

In the present invention, the reinforced concrete part in which the gantry 6 is embedded and installed is referred to as a reinforced concrete foundation 1.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a building.

FIG. 2 is a cross-sectional plan view of a building.

FIG. 3 is a cutaway side view of a main part (stand).

FIG. 4 is a sectional view taken along line AA in FIG.

FIG. 5 is a perspective view showing a construction procedure.

FIG. 6 is a side view showing another embodiment.

FIG. 7 is a cutaway side view showing the prior art.

[Explanation of symbols]

2 Reinforced concrete foundation 2a Reinforcing material 3 Seismic isolation device 6 Stand 6a Mounting surface of seismic isolation device 6A Anchor 6B Mounting portion 6AS Internal space 6A1 Frame 6B2 Reaction force receiving portion 9 Push bolt 11 Level adjustment bolt

Continuation of front page (72) Inventor Teruo Segawa 4-1-1, Honmachi, Chuo-ku, Osaka-shi, Osaka Takenaka Corporation Inside the Osaka main store (56) References JP-A-5-280202 (JP, A) JP Hei 6-42064 (JP, A) JP-A-7-197474 (JP, A) Japanese Utility Model Hei 6-82133 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04H 9 / 02 331 E04G 21/18

Claims (2)

(57) [Claims] A pedestal (6) for loading and supporting a seismic isolation device (3) is provided at an upper part in a state of being embedded in a reinforced concrete foundation (2), and a mounting surface (6) of the pedestal (6) is installed.
A seismic isolation device mounting gantry device which is provided with level adjusting means for adjusting the a) so as to position a predetermined level, to constitute the frame (6), the reinforcing bar Conch
Buried inside the reinforcement (2a) in the REIT foundation (2)
A lower anchor portion (6A) to be fixed and embedded, and an upper mounting portion (6) forming the seismic isolation device mounting surface (6a).
B) and its mounting portion (6B) is connected to the anchor portion (6A).
To provide a support means for loading supported in a horizontal movement restriction state, to configure the level adjusting means, the attachment portion (6
B) in the circumferential direction a plurality of locations each peripheral portion, the mounting portion (6
B) penetrates from above, and the anchor portion (6A)
A mounting device for mounting a seismic isolation device, in which a level adjusting bolt (11) loaded and supported on the device is screwed. To configure wherein said supporting means, a reaction force to protrude the respective plurality of circumferential locations of the mounting portion (6B), from above into the interior space (6AS) surrounded by the anchor portions (6A) is provided with receiving section (6B2), next to each of the plurality of circumferential locations of the frame part (6A1) positioned around the internal space (6AS), the frame portion (6A1) of said anchor portion (6A) the attachment portion by pressing the reaction force receiving portion in the inner end penetrates from the outside to (6B2) on the inside (6
The mounting device according to claim 1, wherein a push bolt (9) for regulating a horizontal position of the anchor portion (B) with respect to the anchor portion (B) is screwed.