JP4090622B2 - EXP joint device in base-isolated building - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is provided between an expansion joint device (hereinafter referred to as an EXP joint) that covers a gap with a wall of a base shaft such as an elevator shaft or a staircase shaft, or an adjacent existing building in a seismic isolation building. The present invention relates to an EXP joint device, and more particularly to an EXP joint that displaces following a large earthquake and returns to its original state when the displacement is settled.
[0002]
[Prior art]
In the building having the seismic isolation device, as shown in FIG. 6, when the seismic isolation device 20 is provided on the intermediate floor of the building 21, the upper floor portion above the seismic isolation device 20 and the lower floor portion below In addition, a saddle shaft 22 such as an elevator shaft or a staircase shaft must be provided.
[0003]
Therefore, the rod shaft 22 is suspended from the upper floor portion and suspended from the lower floor portion, and there is a clearance between the periphery of the rod shaft 22 and the lower floor portion. The amount was only 200 mm in the maximum X direction and around 100 mm in the Y direction.
[0004]
[Problems to be solved by the invention]
However, it is impossible to cope with the displacement amount at the time of a large earthquake with the conventional EXP joint. For example, when trying to correspond to the displacement amount of 300 mm in the X and Y directions, a large gap is formed between the wall and the wall. Will occur. It is necessary to provide an EXP joint that closes this gap and has to be protruded toward the corridor, and can withstand collisions with moving objects. The EXP joint in the base-isolated building according to the present invention is proposed to solve such a problem.
[0005]
[Means for Solving the Problems]
The gist for solving the above-mentioned problem of the EXP joint device in the seismic isolation building according to the present invention is that the side surface of the shaft that is suspended from the upper floor of the seismic isolation layer when the seismic isolation device is provided on the intermediate floor of the building; Two joint members can be freely rotated by hinges provided at three locations, both ends of the joint and in the middle, on the wall end of the lower floor of the seismic isolation layer, which is provided with a required clearance between the side surfaces. And an orthogonal cylinder for maintaining the substantially orthogonal state of the joint member is installed between the two members inside the middle portion where the two joint members are connected to each other. And an alarm means for issuing an alarm when the substantially orthogonal state of the two joint members is not maintained .
[0006]
The supporting member provided between the hinges at both ends of the joint and the side surface side and the wall side of the rod shaft has at least one supporting member provided with return means for returning the two joint members displaced from the orthogonal state to the orthogonal state. The connecting portion between the two joint members and each hinge is provided with a sheath tube that can be expanded and contracted in the axial direction.
[0007]
The expansion joint device in the base-isolated building according to the present invention includes two hinges provided at the joint both ends and midway in the expansion joint between the base-isolated building and the existing building adjacent to the base-isolated building. That is, a joint is provided in which the joint member is rotatably supported.
[0008]
According to the EXP joint device in a base-isolated building according to the present invention, even when a large displacement exceeding 300 mm is caused by an earthquake, it can be easily followed by three hinges connecting two joint members.
[0009]
In addition, when an earthquake stops, there is an orthogonal cylinder that returns to the original orthogonal state within a certain range of displacement. When the two joint members do not fall within the predetermined orthogonal state, an alarm is issued by the alarm means, and an administrator or the like can be notified. And the return means provided in at least one support member among the support members provided between the hinges of both ends of the joint and the side surface side and the wall side of the flange shaft, the two joint members housed in a largely displaced state Can return to the orthogonal state. Furthermore, by using a sheath tube, the two joint members can be returned to the orthogonal state by expanding and contracting in the axial direction.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, an EXP joint device in a base-isolated building according to the present invention will be described with reference to the drawings. In order to facilitate understanding of the invention, portions corresponding to the conventional example are denoted by the same reference numerals as those of the conventional example.
[0011]
As shown in FIG. 1, the EXP joint device 1 has a side surface of the eaves shaft 22 suspended from the upper floor of the seismic isolation layer when the seismic isolation device is provided on the intermediate floor of the building, as shown in FIG. At the end of the wall (sleeve wall 6) of the seismic isolation layer that is provided with the required clearance 23 between the side surfaces, and at the three ends of the EXP joints A and B and the middle C The two joint members 2 and 3 are rotatably supported by the provided hinges 7, 8 and 9. Of course, a similar EXP joint device 1 is provided on the sleeve wall 5 side shown in FIG.
[0012]
The joint members 2 and 3 are made of metal (for example, made of stainless steel) for covering the gap between the heel shaft 22 and the sleeve wall 6, and the height in the vertical direction is from the floor surface of the slab. It is the height to the ceiling. In addition, the width dimension is appropriately set assuming the maximum amount of displacement at the time of the earthquake, and the two joint members 2 and 3 may be the same length dimension, or one may be set longer than the other. good.
[0013]
The joint members 2 and 3 are made of metal. For example, if the building is a medical institution such as a hospital, the corners of heavy objects such as stretchers and trolleys may collide so that they can withstand it. It is to make it.
[0014]
The hinges 7, 8 and 9 are attached to the joint members 2 and 3 with screws or the like. Among them, the hinge 9 in the middle part C of the EXP joint is a continuous hinge (a continuous hinge through the cover channel 9a in the vertical direction ( The opening is approximately 180 ° by the leaf meshed with the fan-shaped gear at the end of the leaf (universal plate) 9b sealed by the cover channel 9a.
[0015]
The connection structure between the leaves 7a and 8a of the hinges 7 and 8 and the L-shaped steel bracket 11 which is one support member connected to the leaves is screwed by screws. By doing so, it can be easily attached to a wall having a clearance.
[0016]
If the EXP joint apparatus 1 configured as described above is used, even if the intermediate floor seismic isolation building 21 has a displacement (allowable deformation amount) of 300 mm at the maximum in the XY direction at the time of the earthquake, the 3 The hinges 7, 8, 9 can be easily followed.
[0017]
In the EXP joint apparatus 1a according to the second embodiment of the present invention, the connecting structure between the bracket 11 and the bracket 12 which is the other support member fixed to the concrete side with the bolt 13 is horizontal as shown in FIG. A member that is sandwiched between the brackets 11 and 12, a long hole 12 a that is long and drilled in the direction, a nut 14 that is welded and fixed to a predetermined position of the bracket 11 (a position corresponding to the long hole 12 a), and In this case, the sliding member 15a used for the horizontal sliding of the bracket, the sliding member 15b interposed between the bolt 16 and the bracket 12, and the bolt 16 for attaching them to the horizontal direction. It is comprised in the structure which has the reset means by the movement possible. The connection structure is provided at two or more locations in the vertical direction.
[0018]
The sliding member 15 has a sliding material such as Teflon attached to both surfaces thereof. Also, slippery ones such as ladder bearings may be used.
[0019]
Further, in the midway portion C where the two joint members 2 and 3 are connected, as shown in FIG. 3, an orthogonal cylinder 17 installed on the joint members 2 and 3 is provided.
[0020]
The overall length of the orthogonal cylinder 17 is adjusted to the length of the installation position in which the joint members 2 and 3 are substantially orthogonal. The cylinder is an air cylinder. When the joint members 2 and 3 become acute or obtuse, they are expanded and contracted against the compression and expansion, and the joint members 2 and 3 are always returned to the substantially orthogonal state. It acts to maintain.
[0021]
Even if the relative position between the collar shaft 22 and the sleeve wall 6 is displaced after the earthquake is stopped, the sliding member 15 acts between the brackets 11 and 12 of the supporting member by the action of the orthogonal cylinder 17. By appropriately moving in the horizontal direction, the orthogonal state of the two joint members 2 and 3 is maintained.
[0022]
The hinge 9 is provided with alarm means 10 for issuing an alarm such as lamp blinking when the two joint members 2 and 3 are not in a substantially orthogonal state.
[0023]
Thus, even when the relative position between the collar shaft 22 and the sleeve wall 6 is greatly displaced, even when the two joint members 2 and 3 do not return to the original substantially orthogonal state, the alarm means 10 recognizes this. Let us know. Therefore, the brackets 11 and 12 are moved within the range of the long holes 12a by slightly loosening the bolts 16 connecting them. The two joint members 2 and 3 are brought into a substantially orthogonal state, and the bolt 16 is fastened again.
[0024]
Even if the sliding member 15 is not used, if the warning means 10 is used, the bolt is slightly loosened even in a small and medium-sized earthquake and moved within the longitudinal direction of the long hole 12a, so that the two joint members 2 and 3 are substantially omitted. The same thing can be easily done by setting the bolt 16 to the orthogonal state and fastening the bolt 16 again. In addition, since the hinge 9 is a continuous hinge that is long in the vertical direction, its cover channel 9a closes the gap to improve the appearance.
[0025]
In the EXP joint device 1b according to the third embodiment of the present invention, as shown in FIG. 4 to FIG. 5, a hinge that rotates and supports the two joint members 2 and 3 is used as a sheath tube that can expand and contract within a certain range. It is an example.
[0026]
The hinges 18, 19, 30 using the sheath pipes, the pipes 31, 32 disposed in the sheath pipes, and the engaging members 33 for engaging the pipes 31, 32 with the joint members 2, 3, respectively. Has been. The orthogonal cylinder 17 is also installed on the sheath tube. In addition, an engagement portion for preventing disconnection is provided so that the sheath tube and the pipe do not come off due to extension.
[0027]
The EXP joint device 1b having such a configuration can absorb a large relative displacement between the heel shaft 22 and the sleeve wall 6. Moreover, as shown in FIG. 7 , the present invention can also apply the EXP joint apparatus 1a or EXP joint apparatus 1b to the connection part of the existing building 25 and the seismic isolation building 21 as 4th Example. is there.
[0028]
The EXP joint device 1a in the base-isolated building according to the fourth embodiment of the present invention has a clearance 23 between the base-isolated building 21 and the existing building 25 adjacent to the base-isolated building 21, as shown in FIG. It is provided. Thereby, the same operations and effects as those of the above embodiments can be obtained.
[0029]
【The invention's effect】
As described above, the EXP joint device in the base-isolated building according to the present invention has the side surface of the eaves shaft suspended from the upper floor of the base isolation layer and the side surface when the base station has the base isolation device. Two joint members are rotatably supported by hinges provided at three locations, both ends of the joint and midway, on the wall end of the lower floor of the seismic isolation layer that is provided with a required clearance between The joints thus formed are disposed and have the following excellent effects.
[0030]
Inside the middle portion of the two joint members are connected, together with orthogonal cylinder to maintain a substantially perpendicular state of the joint member is extended between both members, substantially perpendicular state of the two joint members to maintain Since there is an alarm means to issue an alarm when it is not done, there will be an orthogonal cylinder that will return to the original orthogonal state within a certain range of displacement if the earthquake stops, so it will return to the orthogonal state naturally If it does not return, the administrator is notified of the condition as an alarm.
[0031]
When the two joint members do not fit within the predetermined orthogonal state, at least one of the support members provided between the hinges at both ends of the joint and the side surface and the wall side of the rod shaft includes a joint. Since the return means for returning the member to the orthogonal state is provided, an alarm is issued by the alarm means, and the two joint members stored in a largely displaced state can be returned to the orthogonal state by the return means. It has an excellent effect.
[0032]
Furthermore, the connecting portion between the two joint members and each hinge is provided with a sheath tube that can be expanded and contracted in the axial direction, so that the two joint members are orthogonally expanded by expanding and contracting in the axial direction. It has an excellent effect that it can be returned.
[0033]
Also the clearance between the existing buildings adjacent to the seismic isolation building and this can kick set the respective EXP joint device.
[Brief description of the drawings]
FIG. 1 is a plan view of an EXP joint device 1 according to a first embodiment of the present invention in use.
FIG. 2 is a partial detailed perspective view (A) and a plan sectional view (B) of an EXP joint device 1a according to a second embodiment of the present invention.
FIG. 3 is a partial detailed plan view of an EXP joint device 1a according to a second embodiment of the present invention.
FIG. 4 is a plan view of an EXP joint device 1b according to a third embodiment of the present invention.
FIG. 5 is a partial perspective view of an EXP joint device 1b according to the third embodiment.
FIG. 6 is an explanatory diagram of a building having a seismic isolation device on an intermediate floor.
FIG. 7 is a partial plan view for explaining a fourth embodiment of the present invention.
[Explanation of symbols]
1, 1a, 1b EXP joint device, 2, 3 joint members,
5, 6 Sleeve wall, 7, 8, 9 Hinge, 7a, 8a, 9b Leaf,
9a Cover channel, 10 alarm means,
11,12 bracket, 12a long hole, 14 nut,
15 sliding member, 13, 16 bolt,
17 orthogonal cylinder, 18, 19 hinge, 20 seismic isolation device,
21 building, 22 shaft, 23 clearance,
30 Hinge using Saya tube, 31, 32 pipe, 33 engaging member.

Claims (3)

When a seismic isolation device is installed on the middle floor of a building, the side of the shaft that is suspended from the upper floor of the base isolation layer and the lower floor of the base isolation layer that is arranged with a required clearance between the side surfaces While the wall end portion is provided with a joint in which two joint members are rotatably supported by hinges provided at three locations of the joint both ends and midway ,
An orthogonal cylinder for maintaining the substantially orthogonal state of the joint member is installed between both members inside the middle portion where the two joint members are connected, and the approximately orthogonal state of the two joint members is maintained. There is an alarm means to issue an alarm when not done,
EXP joint device in a base-isolated building characterized by At least one support member is provided with a return means for returning the two joint members displaced from the orthogonal state to the orthogonal state on the support member provided between the hinges at both ends of the joint and the side surface and the wall side of the shaft. Being done,
An EXP joint device for a base-isolated building according to claim 1 . The connecting portion between the two joint members and each hinge is provided with a sheath tube that can expand and contract in the axial direction,
An EXP joint device for a base-isolated building according to any one of claims 1 to 2 .

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