JP4404168B2 - Laminated body with lead struts for a structure seismic isolation support device and a structure seismic isolation support device provided with this laminate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes a laminated body including lead struts suitable for use in a seismic isolation support device that supports structures such as buildings, apartment houses, detached houses, bridge girders, and elevated roads while protecting them from earthquakes. The present invention relates to a structure seismic isolation device.
[0002]
[Problems to be solved by the invention]
Conventionally, as a seismic isolation support device for protecting a structure from an earthquake, a pair of rigid reinforcement plates as a pair of rigid plates, and an elastic layer and a rigid layer arranged alternately between the pair of rigid reinforcement plates A hollow portion extending through the elastic layer and the rigid layer in the laminating direction, and a lead strut made of lead as an energy absorber using a method such as press fitting in the hollow portion. In addition, there is a sealing member that is welded to each of a pair of rigid reinforcing plates, for example, a laminate including lead struts in which both ends of a hollow portion are sealed with a shear key member.
[0003]
For the laminated body with lead struts, its performance test is usually carried out before shipping or assembling as a seismic isolation support device, and as a result, a predetermined shear yield load characteristic value as designed is obtained. There is a case of finding a lead-supported laminate that does not meet the requirements. The main reason why the shear yield load characteristic value is not satisfied is thought to be due to the presence of gaps in the hollow part due to the lack of the amount of lead arranged in the hollow part. Instead of adding lead or adding lead, press the lead already arranged in the hollow part and pack the disk-shaped steel pieces into the hollow part. A very troublesome work in terms of productivity, cost, and the like is required in which a sealing member such as a shear key that has been welded is temporarily removed.
[0004]
The above problem is that without providing a pair of rigid reinforcing plates, the upper and lower surfaces of the laminate including the elastic layer and the rigid layer are directly used as the rigid plates on the upper and lower surfaces of the foundation and the upper part of the building. Also in a laminated structure with lead struts in which a flange plate to be attached to a structure is fixed by vulcanization adhesion or the like, and both ends of the hollow portion are sealed with a shear key member welded to the flange plate It can happen as well.
[0005]
The present invention has been made in view of the above-described points, and the object of the present invention is to provide a lead-supported laminated body for a structure seismic isolation support device capable of easily increasing the amount of lead arranged in the hollow portion, and An object of the present invention is to provide a structure seismic isolation support device including the laminate.
[0006]
[Means for Solving the Problems]
The laminated body with lead struts for the structure seismic isolation support device according to the first aspect of the present invention includes a pair of rigid plates and an elastic layer and a rigid layer that are alternately stacked between the pair of rigid plates. In the laminated body provided, at least one hollow portion extending through at least the elastic layer and the rigid layer in the lamination direction and sealed at one end in the lamination direction is provided, and lead as a lead column is arranged in the hollow portion. In addition, the other end of the hollow portion in the stacking direction is sealed with a sealing member fixed to a rigid plate disposed on the other end side, and the hollow portion and the outside communicate with the sealing member. While providing a through-hole, the through-hole is provided with a metering plug for adjusting the amount of lead in the hollow portion.
[0007]
According to the laminate with lead struts of the first aspect, since the metering plug for adjusting the lead amount of the hollow portion is provided on the sealing member, the sealing member is welded to the rigid plate, etc. Without releasing the sticking due to, adjust the position of the metering plug relative to the sealing member and push the lead extending to the through hole further into the hollow part, or once remove the metering plug from the sealing member and penetrate The lead in the hollow part can be easily increased by adding lead to the hollow part through the hole.
[0008]
The laminated body with lead struts according to the second aspect of the present invention is the laminated body with lead struts according to the first aspect, wherein a through-hole is provided in a rigid plate disposed on the other end side in the laminating direction of the hollow portion. A shear key member is arranged in the hole as a sealing member.
[0009]
According to the laminated body with lead struts of the second aspect, the sealing member and the shearing key are used because the shearing key member that is a fixing member with respect to the shearing direction to the flange plate of the structure seismic isolation support device is used as the sealing member. It is not necessary to prepare both of the members, and any one of the mounting operations can be omitted.
[0010]
The laminated body with lead struts of the third aspect of the present invention is the laminated body with lead struts of the first or second aspect, wherein the metering plug is screwed to the sealing member.
[0011]
According to the laminated body with lead struts of the third aspect, since the metering plug is screwed to the sealing member, the position of the metering plug with respect to the sealing member can be continuously finely adjusted and hollow. It is possible to easily push and press-fit lead into the part.
[0012]
The laminated body with lead struts of the fourth aspect of the present invention is the laminated body with lead struts of the third aspect, wherein the metering stopper is rotated so that the lead amount of the hollow portion can be adjusted. A metering plug rotating means for changing the screwed state to the sealing member is provided on the externally exposed surface side of the metering plug.
[0013]
As one preferred example of the metering plug rotating means, for example, a cornered recess such as a hexagonal recess provided in the exposed surface of the metering plug can be cited. As another example, the metering plug is exposed. Examples thereof include a rectangular protrusion such as a hexagonal protrusion or a large number of recesses or protrusions that mesh with and engage with a metering plug rotating jig.
[0014]
The laminated body with lead struts of the fifth aspect of the present invention is the laminated body with lead struts according to any of the first to fourth aspects, from the outside to the hollow part through the through hole provided in the sealing member. The metering plug is detachably provided on the sealing member so that lead can be replenished.
[0015]
Like the laminate with lead struts of the fifth aspect, by providing the metering plug in the sealing member so as to be removable, it is possible to add a predetermined shear yield load to the lead-only hollow portion extending to the through hole. When the characteristic value cannot be obtained, lead from the outside can be easily added to the hollow portion.
[0016]
The laminated body with lead struts of the sixth aspect of the present invention is the laminated body with lead struts according to any one of the first to fifth aspects, wherein the hollow portion is formed in a cylindrical shape and is provided in the sealing member. The hole is formed by a circular hole having a diameter smaller than the diameter of the hollow portion.
[0017]
According to the laminated body with lead struts of the sixth aspect, lead can be added from the small-diameter through hole to the large-diameter hollow portion. In addition, the reaction force from the lead applied to the metering plug is small, and the locking mechanism is broken even if the metering plug locking mechanism to the sealing member is low in strength. The situation can be reduced.
[0018]
The laminated body with lead struts according to the seventh aspect of the present invention is the laminated body with lead struts according to any one of the first to sixth aspects, wherein lead is densely arranged in the hollow portion and the through hole. .
[0019]
The laminated body with lead struts according to the eighth aspect of the present invention is the laminated body with lead struts according to any one of the first to seventh aspects. The metering plug is formed by making the length sufficiently shorter than the thickness of the lead sealing member.
[0020]
According to the laminated body with lead struts of the eighth aspect, it is possible to eliminate the metering plug from protruding from the lead sealing member. Therefore, it is possible to adjust the flange plate of the structure seismic isolation support device or the upper structure to be supported. There is no need to perform special processing or the like to receive the volume stopper, so that a normal flange plate can be used, and normal construction can be performed on the superstructure.
[0021]
In the laminate with lead struts of the present invention, a plurality of hollow portions may be provided, and lead as a lead strut may be arranged in each hollow portion. In this case, the lead amount can be adjusted for all the hollow portions. However, the lead amount may be adjusted only for some of the hollow portions. Further, one end of the hollow portion in the stacking direction may be sealed by the rigid plate itself on the one end side, but instead, like the other end of the hollow portion in the stacking direction, a shear key member is used as a sealing member. May be fixed to a rigid plate to seal one end of the hollow portion in the stacking direction, and the lead amount may be adjusted with respect to the hollow portion at one end of the hollow portion in the stacking direction. In this way, if the lead amount can be adjusted at both ends, the directionality of the laminated body with lead struts may be lost, which may be preferable.
[0022]
In any of the above-described laminates with lead struts, the rigid plate may be a rigid reinforcing plate that is vulcanized and bonded to the elastic layer and fixed to the elastic layer. The flange plate may be used. In a laminated structure with lead struts having a flange plate that is directly vulcanized and bonded to the elastic layer, it can be installed directly between the lower structure such as the foundation and the ground and the upper structure such as the building. .
[0023]
The structure seismic isolation support device of the present invention includes the laminated body including the lead struts according to any one of the above aspects, each of the rigid plates is a rigid reinforcing plate, and the flange plate is attached to the rigid reinforcing plate. It will be.
[0024]
In the structure seismic isolation support device of another aspect of the present invention, the flange plate is formed with a through hole communicating with the through hole of the sealing member provided with the metering plug.
[0025]
By providing the through hole in the flange plate, the lead amount in the hollow portion can be adjusted through the metering plug even after the flange plate is fixed to the laminated body with the lead struts with bolts or the like.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention and the embodiments of the present invention will be further described based on preferred examples shown in the drawings.
[0027]
1 to 3, the laminated body 1 with lead columns for the structure seismic isolation support device of this example is alternately arranged between a pair of rigid reinforcing plates 2 and 3 and a pair of rigid reinforcing plates 2 and 3 as a pair of rigid plates. And extends through the rigid reinforcing plates 2 and 3 and the elastic layer 4 and the rigid layer 5 in the laminating direction, in the laminated body 6 having a plurality of elastic layers 4 and the rigid layer 5 arranged in layers. A hollow portion 8 having one end 7 in the stacking direction sealed is provided, lead 9 as a lead strut is disposed in the hollow portion 8, and the other end 10 in the stacking direction of the hollow portion 8 is disposed on the other end 10 side. The disk is sealed with a disc-shaped shear key member 11 as a sealing member fixed to the rigid reinforcing plate 2, and a hollow in which lead 9 as a lead strut is arranged at one end in the center of the shear key member 11. A through hole 12 that opens to the portion 8 and opens to the outside at the other end to communicate the hollow portion 8 with the outside is provided. Both between the one end and the other end of the through hole 12 is made by providing a metering plug 13 for adjusting the amount of lead in the hollow portion 8.
[0028]
Each of the rigid reinforcing plates 2 and 3 is formed of a steel plate that is thicker than the steel plate that constitutes the rigid layer 5, and a step that constitutes the other end 10 and one end 7 of the hollow portion 8 at each center portion. The through-holes 21 and 22 are perforated, and the shear key member 11 is fixed to the rigid reinforcing plate 2 by welding in the circular through-hole 21. Also in the hole 22, a disc-like shear key member 23 as another sealing member is fixedly disposed on the rigid reinforcing plate 3 by welding. A plurality of screw holes 29 and 30 for attaching upper and lower flange plates 27 and 28 of a structure seismic isolation support device 26 described later are formed in the exposed upper surface 24 and lower surface 25 of the rigid reinforcing plates 2 and 3, respectively. ing.
[0029]
The elastic layer 4 is made of a natural rubber plate, a viscoelastic rubber plate, a damping rubber plate or the like, and does not slip in the shear direction F (see FIG. 4) with respect to the rigid reinforcing plates 2 and 3 and the rigid layer 5 made of a steel plate. Each is vulcanized and bonded.
[0030]
The columnar laminate 6 further includes a cylindrical covering layer 35 that is integrally formed with the elastic layer 4 so as to cover the outer peripheral surfaces of the rigid reinforcing plates 2 and 3 and the elastic layer 4 and the rigid layer 5. .
[0031]
The lead 9 extends to the through hole 12 in addition to the hollow portion 8 and is densely arranged in these. In this example, the through hole 12 formed as a screw hole is formed by a circular hole having a diameter smaller than that of the cylindrical hollow portion 8.
[0032]
The metering plug 13 is detachably provided from the shear key member 11 so that the lead 9 can be replenished to the hollow portion 8 from the outside through the through hole 12 by screwing into the shear key member 11. ing. On the externally exposed surface 36 side of the metering plug 13, the metering plug 13 is rotated to change the screwing state of the metering plug 13 to the shear key member 11 so that the lead amount of the hollow portion 8 can be adjusted. A hexagonal recess 37 is formed as a metering plug rotating means. The metering plug 13 is formed such that its length in the stacking direction is sufficiently shorter than the thickness of the shear key member 11 so as to be a blind plug with respect to the shear key member 11.
[0033]
In the above-described laminated body 1 with lead struts, a performance test is usually performed before shipping or assembling into the structure seismic isolation support device 26 as shown in FIG. As a result of this performance test, the lead-supported laminated body 1 does not satisfy a predetermined shear yield load characteristic value as designed, and the cause thereof is an insufficient amount of lead 9 enclosed in the hollow portion 8. In the case of the laminated body 1 with lead struts, the tip of the rotary jig is inserted into the hexagonal recess 37 to rotate the metering plug 13, and the metering plug 13 is further screwed into the through hole 12. The lead 9 extending between the metering plug 13 and one end of the through-hole 12 in the through-hole 12 is pushed into the hollow portion 8 to replenish the lead 9 in the hollow portion 8, thereby The amount can be increased to meet a predetermined shear yield load characteristic value.
[0034]
Moreover, in the laminated body 1 with lead struts, when the lead 9 does not extend into the through-hole 12 or when the amount of the lead 9 in the hollow portion 8 is considered to be insufficient even by the above pushing, The metering plug 13 is temporarily removed from the through hole 12, and new lead is supplied to the through hole 12. Then, the metering plug 13 is screwed into the through hole 12, and the new lead supplied to the through hole 12. By pushing 9 into the hollow portion 8, the amount of lead 9 in the hollow portion 8 can be increased in the same manner as described above, and therefore, a predetermined shear yield load characteristic value can be satisfied.
[0035]
Therefore, in the laminated body 1 including the lead struts, it is not necessary to perform a very troublesome work in terms of productivity, cost, and the like of once removing the shearing key 11 that is already welded to the rigid reinforcing plate 2.
[0036]
As shown in FIG. 4, the laminated body 1 with lead struts configured to satisfy a predetermined shear yield load characteristic value is used in a structure seismic isolation support device 26. At this time, the flange plates 27 and 28 made of upper and lower steel plates of the structure seismic isolation support device 26 are placed on the upper and lower surfaces of the laminated body 1 with lead struts by bolts 41 and 42 screwed into the screw holes 29 and 30, respectively. It is attached. In the structure seismic isolation support device 26, the flange plate 28 is fixed to a lower structure 45 such as a foundation or the ground via an anchor bolt 46, and the flange plate 27 attaches an anchor bolt 48 to an upper structure 47 such as a building. The structure 47 is interposed between the structure 45 and the structure 47 to support the structure 47 in a seismic isolation manner against the vibration in the horizontal direction (shear direction F) caused by the earthquake.
[0037]
The above-mentioned laminated body 1 with lead struts is composed of a laminated body 6 having rigid reinforcing plates 2 and 3 as a pair of rigid plates, but omits the rigid reinforcing plates 2 and 3 and, as shown in FIG. The upper and lower flange plates 27 and 28 may be directly vulcanized and bonded to the uppermost elastic layer 4 and the lowermost elastic layer 4 as rigid plates to form the laminated body 1 with lead struts. 5 and 28 as a pair of rigid plates, the laminated structure 1 with lead struts shown in FIG. 5 is used as it is as a structure seismic isolation support device 26 for the lower structure 45 such as the foundation and the ground and the upper structure such as the building. It can be installed between the object 47. In the laminated body 1 with lead struts shown in FIG. 5, a simple annular lid member 51 that does not protrude from the upper surface 50 of the flange plate 27 may be used without particularly using the shear key member 11 as a sealing member.
[0038]
Further, in the structure seismic isolation support device 26 shown in FIG. 4, after the flange plate 27 is attached, the lead amount of the hollow portion 8 cannot be adjusted unless the bolt 41 is removed. The flange plate 27 is formed with a circular through hole 61 communicating with the through hole 12 of the shear key member 11 provided with the metering plug 13 and having a diameter larger than the diameter of the through hole 12. Even after being fixed to the laminated laminate 1 with bolts or the like, the lead amount of the hollow portion 8 may be adjusted via the metering plug 13.
[0039]
【The invention's effect】
It is possible to provide a laminated body with lead struts for a structure seismic isolation support device that can easily increase the amount of lead arranged in the hollow portion, and a structure seismic isolation support device including this laminate.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an example of a preferred embodiment of a laminate with lead struts of the present invention.
FIG. 2 is a plan view of the example shown in FIG.
FIG. 3 is a partially enlarged view with the metering stopper of the example shown in FIG. 1 removed.
FIG. 4 is a cross-sectional view of an example of a preferred embodiment of the structure seismic isolation support device of the present invention using the laminated body of the example shown in FIG.
FIG. 5 is a cross-sectional view of an example of another preferred embodiment of a laminate with lead struts of the present invention.
FIG. 6 is a cross-sectional view of another preferred embodiment of the structure seismic isolation support device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Laminated body 2 with lead support for structure seismic isolation support device 3, 3 Rigid reinforcement board 4 Elastic layer 5 Rigid layer 6 Laminated body 8 Hollow part 9 Lead 11 Shear key member 12 Through-hole 13 Metering plug

Claims (7)

  In a laminate comprising a pair of rigid plates and elastic layers and rigid layers arranged alternately between the pair of rigid plates, the laminate extends in the laminating direction and penetrates at least the elastic layer and the rigid layer. A rigid plate provided with at least one hollow portion whose one end in the direction is sealed, with lead as a lead strut disposed in the hollow portion, and the other end in the stacking direction of the hollow portion disposed on the other end side The sealing member is sealed with a sealing member fixed to the opening, and the sealing member is opened at one end to a hollow portion where lead as a lead column is disposed, while the other end is opened to the outside, and the hollow portion and the outside A metering plug for adjusting the lead amount in the hollow portion between one end and the other end of the through hole, and a metering plug in the through hole by rotating the metering plug. Can be replenished to the lead in the hollow portion and lead through the through hole. The lead from the outside is screwed so that it can be replenished to the lead in the hollow part, and is detachable, the hollow part is formed in a columnar shape, and the through hole provided in the sealing member A laminated body with lead struts for a structure seismic isolation support device, which is formed by a circular hole having a smaller diameter.   2. The structure exemption according to claim 1, wherein another through hole is provided in the rigid plate disposed on the other end side in the stacking direction of the hollow portion, and a shear key member is disposed as a sealing member in the other through hole. Laminated body with lead struts for seismic support devices.   A metering plug rotating means that rotates the metering plug to change the screwing state of the metering plug to the sealing member is provided on the externally exposed surface side of the metering plug so that the lead amount of the hollow portion can be adjusted. The laminated body containing a lead strut for the structure seismic isolation support device according to claim 1 or 2.   The laminated body containing a lead column for a structure seismic isolation support device according to any one of claims 1 to 3, wherein lead is densely arranged in the hollow portion and the through hole.   The length of the metering plug in the stacking direction is sufficiently shorter than the thickness of the sealing member to form the metering plug so that the metering plug is a blind plug. A laminated body with lead struts for the structure seismic isolation support device described in the paragraph.   6. A structure seismic isolation support device comprising a lead-supported laminated body for a structure seismic isolation support device according to any one of claims 1 to 5, wherein each of the rigid plates is a rigid reinforcement plate. A structure-isolated support device with a flange plate attached to the rigid reinforcement plate.   7. The structure seismic isolation support device according to claim 6, wherein a through hole communicating with the through hole of the sealing member provided with the metering plug is formed in the flange plate.

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