JP2001152696A - Seismic isolation support device for roof framework - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support a steel roof framework covering a huge space with a substructure having a simple seismic isolation construction. SOLUTION: A support member 10, comprising a receiving plate 12 united with the bottom baseplate 11 with a certain distance to the bottom baseplate 11 in the vertical direction, is fixed to a substructure 3, a roof bearing portion 2 of the roof framework 1 is supported by the receiving plate 12, the roof bearing portion 2 is connected to the receiving plate 12 in a manner enabling the relative horizontal displacement relative to the substructure 3 at the baseplate 7, and a damper member 14 is erected, which straddles between the roof bearing portion 2 and either one of the roof frameworks in the vicinity and the bearing member 10 and one of the substructures 3 and a damper member 14 is erected which generates a damping force during the relative horizontal displacement between a roof-bearing portion 2 and the substructure 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation support device for a roof frame having a roof structure composed of a truss structure, a general steel frame structure, or the like, which is seismically isolated and supported on a lower structure.

[0002]

2. Description of the Related Art In many cases, a supporting portion for supporting a steel-framed roof frame covering a large space on a lower structure is designed as a pin support or a roller support. On certain roofs, a large vertical movement occurs due to the input of horizontal movement during an earthquake, and a large force is generated on the roof frame.

[0003] Further, a large horizontal and vertical reaction force (compression force and pull-out force) is generated in the pin bearing portion, and the reaction force is also borne by members around the bearing portion. In addition, it is necessary to make the supporting part itself a robust structure and the lower structure supporting the supporting part also needs to be a robust structure, so the dimensions of the members of the roof frame support part and the lower structure become large, and the roof frame and the lower structure There is a tendency that the frame cost of the roof structure combined with the above increases.

[0004] If the seismic isolation method is adopted in order to reduce the acting force on the roof frame and the bearing, it is usually considered that the lower structure is seismically isolated. In addition, the use of a seismically isolated structure for a wide-area structure as a whole results in a significant increase in cost, which is economically problematic. If the roof frame is to be seismically isolated and supported by the substructure in order to suppress the rise in cost, the pull-out force due to the vertical motion of the seismic motion will be handled by the bearing, but in that case, the function to allow horizontal movement will be used. It becomes necessary to add a function of resistance to pull-out force to the roller bearing, and the accommodation becomes complicated, so that cost reduction cannot be achieved.

In view of the above background, the present invention proposes an apparatus for simply supporting a roof frame with seismic isolation.

[0006]

According to the present invention, a support member comprising a lower base plate and a receiving plate integrated with the lower base plate at a vertical distance from the lower base plate is fixed to the lower structure. The roof support of the frame is supported on the receiving plate, and the roof support is connected to the receiving plate in the base plate so as to be displaceable relative to the lower structure with respect to the lower structure, thereby securing a pull-out force generated in the roof support. , To allow relative horizontal displacement between the roof bearing and the substructure due to horizontal force,
Reduce the transmission of seismic motion input to the substructure to the roof frame.

[0007] In the case of a truss structure, the roof bearing is composed of, for example, a ball joint located at a node where the truss members are assembled, and a base plate supported by a substructure. In the case of a general steel structure, it is provided around a roof frame. It is composed of a part of the beam member located and a base plate supported by the lower structure. Specifically, the base plate of the roof support and the receiving plate of the support member are connected so that they can be relatively horizontally displaced by connecting them with bolts etc. while interposing a bearing or low friction member that freely slides between them. Then, the pull-out resistance at the roof support portion is secured by joining with bolts or the like. The bolt holes of the base plate and the receiving plate through which the bolts and the like are inserted are formed in shapes or sizes that allow relative displacement of the bolts and the like.

[0008] By connecting the roof support portion and the support member fixed to the lower structure so as to be relatively horizontally displaceable, the input of the horizontal movement input to the lower structure to the roof frame is reduced, and at the same time, the vertical movement of the roof frame is reduced. Motion is also reduced. As a result, the load on the components such as the truss members constituting the roof frame is reduced, so that the member cross section of the components can be reduced, and the overall weight of the roof frame can be reduced. Since the load on the lower structure is reduced by reducing the weight of the roof frame, the dimensions of the members of the lower structure can be reduced, and the frame cost of the roof structure can be reduced.

In addition, a damper member that generates a damping force when the relative horizontal displacement between the roof support portion and the lower structure straddles between the roof support portion or the surrounding roof frame and the support member, or the lower structure. This suppresses an increase in the relative horizontal displacement between the roof support and the lower structure, and absorbs energy when the roof frame vibrates relative to the lower structure. When a horizontal force is applied, the roof support moves relative to the support plate fixed to the lower structure in one or two directions horizontally, and the damper follows the relative displacement between the roof support and the support plate. And deform. Even when the roof frame expands and contracts due to a temperature change, the roof support follows the expansion and contraction by being relatively displaced with respect to the receiving plate.

In the case where a steel damper or a lead damper is used as the damper member, the damper member has at least one of a roof support portion and a roof frame around it, or a support member and a substructure. , And absorbs energy according to the amount of plastic deformation when the deformation reaches the plastic region. In this case, when only one end of the damper member is fixed to one of the roof support and the roof frame, or the support member and the lower structure, the other end is connected to the roof support and the lower structure relative to the other. When the relative horizontal displacement occurs, or when the relative horizontal displacement is equal to or more than a predetermined amount, the locking is performed in the horizontal direction, and the damper member is deformed as a cantilever. When both ends are fixed to either the roof support portion or the roof frame, or to either the support member or the substructure, the beam is deformed as a fixed beam at both ends.

In the case where a steel rod damper is used for the damper member, the fixed-side end may be connected to one of the roof support and the roof frame, or the support member and the lower structure. If the nut is screwed to any of the fixed nuts, it becomes easy to cope with the necessity of replacement after the damper member has performed the energy absorbing function. When the damper member is a viscoelastic body or a high damping rubber as described in claim 4, the damper member is directly or indirectly connected to any one of the roof support and the roof frame around the roof support. Adhered or locked, directly or indirectly bonded or locked to any of the support members and substructures on any other surface.

In the case of bonding, the damper member has a resistance proportional to the relative speed generated between the two bonded surfaces from the time when the relative horizontal displacement between the roof bearing portion and the lower structure occurs or when the displacement reaches a certain amount or more. While generating force, it absorbs vibration energy due to internal friction and the like. When locking, it is sandwiched between the roof bearing and the lower structure in the direction of relative displacement, and while receiving a compressive force, generating a resistance force according to the compressive force,
Vibration energy is absorbed by internal friction.

When bonded, the viscoelastic body or the high-damping rubber generates a resistance force proportional to the relative speed at the time of relative displacement generated between the two bonded surfaces, and when locked, the resistance force corresponds to the compression force. Therefore, it functions when a dynamic load such as seismic force or wind load is applied and when a static load such as expansion and contraction due to a temperature change is applied. When a dynamic load is applied, a large resistance is generated and energy is efficiently absorbed. When a static load is applied, the generated resistance is small, and the influence of the resistance applied to the straddling member by the damper member is small.

When the damper member is a friction damper as described in claim 5, the damper member is arranged so that its axis is oriented in the horizontal direction, and directly or indirectly on one surface in the axial direction with the roof support portion. Locked to one of the surrounding roof frames and directly or indirectly locked to one of the support members and the lower structure on the other surface, from the time of the occurrence of relative horizontal displacement between the roof support and the lower structure Or, when the displacement reaches a certain amount or more, the vibration energy is absorbed by the frictional force.

According to a sixth aspect of the present invention, the viscoelastic body is interposed between the base plate and the receiving plate of the roof support, so that the energy at the time of the roof frame vibration is absorbed by the damper member and the viscoelastic body, and the vibration suppressing effect is obtained. Enhance. The seismic isolation support device according to any one of claims 1 to 6 includes a support member, a roof support portion, and a damper member installed between the two.
Compared to the case of pin bearings or roller bearings, it is a simple structure with a damper member added substantially, so the complexity of mounting the roof bearings and the increase in cost when converting the roof frame into a seismic isolation structure are suppressed. Can be

According to a seventh aspect of the present invention, the roof support is connected to the lower structure at the base plate so as to be displaceable relative to the lower structure, and the damper member is provided between the roof support or the roof frame around the lower support and the lower structure. By straddling the bridge, the relative horizontal displacement between the roof support and the lower structure due to horizontal force is allowed, the transmission of seismic motion input to the lower structure to the roof frame is reduced, and between the roof support and the lower structure. It suppresses an increase in relative horizontal displacement and absorbs energy when the roof frame vibrates with respect to the substructure.

The base plate and the lower structure of the roof support portion are joined together with an anchor bolt or the like, with a bearing or a low friction member that freely generates sliding therebetween interposed therebetween as in the case of the first aspect. It is connected so as to be capable of relative horizontal displacement, and the pull-out resistance at the roof support is ensured by joining with an anchor bolt or the like. The insertion hole of the base plate through which the anchor bolt or the like is inserted is formed in a shape or size that allows relative displacement of the anchor bolt or the like.

When a horizontal force is applied, the roof support portion is displaced relative to the lower structure in one horizontal direction or two directions, and the damper member deforms following the relative displacement between the roof support portion and the lower structure. Even when the roof frame expands and contracts due to a temperature change, the roof bearing portion follows the expansion and contraction by being displaced relative to the lower structure. By connecting the roof support and the lower structure so that they can be displaced relative to each other, the horizontal and vertical movements input to the lower structure and the input to the roof frame are reduced, and the horizontal and vertical forces acting on the roof support are reduced. As a result, the burden on the components such as the truss members constituting the roof frame is reduced, so that the cross section of the components of the components can be reduced,
The weight of the entire roof frame is reduced. Since the load on the lower structure is reduced by reducing the weight of the roof frame, the dimensions of the members of the lower structure can be reduced, and the frame cost of the roof structure can be reduced.

Also in this case, when a steel damper or a lead damper is used for the damper member, at least one end of the damper member may be one of the roof support portion and the roof frame around the roof support portion or the lower portion. It is fixed to the structure and absorbs energy according to the amount of plastic deformation when the deformation reaches the plastic region. In the case where the damper member is installed near the roof support, one end of the damper member is fixed to one of the roof support and the surrounding roof frame, and the other end is fixed to the lower structure, as described in claim 9. In this case, a notch is formed in the base plate of the roof bearing to prevent collision with the damper member when the base plate is relatively displaced relative to the lower structure, and a clearance is secured in the horizontal direction between the base plate and the damper member. You.

In the case where a steel rod damper is used for the damper member, the fixed-side end portion may be any one of the roof support portion on the side and the roof frame on the periphery thereof.
Or if you screw it into the nut fixed to the lower structure,
It becomes easy to deal with the need for replacement after the damper member has performed its energy absorbing function. When the damper member is a viscoelastic body or a high damping rubber as described in claim 11, the damper member is directly or indirectly connected to any one of the roof support and the roof frame around the roof support. Glued or locked, glued or locked to the substructure directly or indirectly on any other surface.

When the damper member is a friction damper as described in claim 12, the damper member is disposed so that the axis is oriented in the horizontal direction, and directly or indirectly connects with the roof support portion on one axial surface. It locks to one of its surrounding roof frames and directly or indirectly to the substructure on the other side. If a viscoelastic body is interposed between the base plate and the lower structure of the roof support as described in claim 13, the energy during roof frame vibration is absorbed by the damper member and the viscoelastic body, and the vibration is suppressed. Increase.

According to a seventh aspect of the present invention, there is provided a seismic isolation support device comprising a roof support portion and a damper member installed between the roof support portion and a lower structure, which is substantially more than a pin support or a roller support. Since the structure is simple with the addition of a damper member, the seismic isolation structure makes it possible to reduce the complexity of installation and increase costs. In particular, since the support member in the first to sixth aspects is absent, the first to sixth aspects are described.
The configuration is simplified as compared with the case of.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION A seismic isolation support device 9, 27 according to the present invention has a truss structure composed of a truss member 4 and a ball joint 5 connecting its ends as shown in FIG. The roof frame 1 constructed of a general steel structure or the like composed of a beam member 6 such as a ridge beam, a hem beam, and a girder beam connecting the both is seismically isolated and supported by the lower structure 3 at the roof support 2.

In the case of a truss structure, the roof bearing portion 2 comprises, for example, a ball joint 5 located at a node where the truss members 4 gather, and a base plate 7 supported by the lower structure 3.
In the case of a general steel structure, it is composed of a part of the beam member 6 located around the roof frame 1 and a base plate 7 supported by the lower structure 3. Between the ball joint 5 or the beam member 6 and the base plate 7, a rib plate 8 or the like for stiffening the ball joint 5 or the beam member 6 or the base plate 7 is joined while maintaining an interval therebetween.

The seismic isolation support device 9 of the first embodiment comprises a support member 10 fixed to the lower structure 3, a roof support 2 and a damper member 14, as shown in FIGS. The damper member 14 is used for the roof support 2 or the surrounding roof frame 1.
Between the roof support 2 and the lower structure 3, or when a relative horizontal displacement of a certain amount or more occurs between the roof support 2 and the lower structure 3. .

The support member 10 is integrated with the lower base plate 11 with a vertical distance between the lower base plate 11 fixed to the lower structure 3 and the lower base plate 11. Be composed. The receiving plate 12 is integrated with the lower base plate 11 at a distance from the lower base plate 11 by being joined to, for example, a rib plate 13 joined to the lower base plate 11.
In the drawing, the supporting member 10 is placed on the mortar 15 on the substructure 3.
Mortar 15 is not always necessary.

The lower base plate 11 includes an anchor bolt 28
The roof support 2 is fixed to the lower structure 3 by stud bolts or the like, and is connected to the receiving plate 12 at the base plate 7 so as to be relatively horizontally displaceable with respect to the lower structure 3.
When the upper end of the damper member 14 is connected to the base plate 7, the base plate 7 is provided with a larger area than the receiving plate 12.

The base plate 7 of the roof support 2 is mounted on a receiving plate 12 with a low friction material such as an ethylene tetrafluoride sheet adhered to a steel plate or the like, or with a sliding member 16 composed of a bearing using balls or rollers. , Are connected by bolts 17 passing through the base plate 7 and the receiving plate 12. The bolt 17 serves to resist the pull-out force acting on the roof support 2.

FIGS. 1B and 1C are cross-sectional views taken along lines xx and yy, respectively. As shown in FIGS. 1B and 1C, at least one of the base plate 7 and the receiving plate 12 A long or cross-shaped bolt hole that allows displacement of the bolt 17 during relative horizontal displacement of the bolt, or a circular bolt hole larger than the diameter of the bolt 17
7a and 12a are opened. FIG. 1 shows an elongated bolt hole 7a having a different direction in both the base plate 7 and the receiving plate 12.
The case where 12a is formed is shown.

FIG. 1 shows a seismic isolation support device 9 according to claim 2 or 3, wherein a steel rod damper is used as the damper member 14 when the roof frame 1 has a truss structure. Steel dampers and lead dampers, including rod-shaped dampers such as steel rod dampers or plate-shaped dampers such as steel plate dampers, absorb energy by plasticizing by bending or shearing deformation, so that at least one end of the roof bearing 2 And one of the roof frames 1 around it, the lower base plate 11 and the lower structure 3. Figure for lead damper
As shown in Fig. 19, it is used with lead alone or with its surroundings restrained by rubber or the like.

In the drawing, the upper end of the damper member 14 is connected to the base plate 7 of the roof support 2 so as to be able to be locked in the horizontal direction and in the horizontal direction and the vertical direction, but the shape and form of the damper member 14 or the roof support Depending on the configuration and scale of the portion 2, it may be connected to the rib plate 8 or the beam member 6.
In FIG. 1, particularly when the damper member 14 is a steel bar damper, the lower end of the damper member 14 is fixed to the lower base plate 11 or the lower structure 3, and the upper end is connected to the base plate 7 so as to be relatively rotatable. The damper member 14 is turned upside down, the upper end of the damper member 14 is fixed to the base plate 7 by welding or a nut 18, and the lower end is penetrated through the lower base plate 11, as shown in the upper end of the damper member 14 in FIG. It may be connected to the lower base plate 11 so as to be relatively rotatable.

In FIG. 1- (a), when the damper member 14 undergoes bending deformation, no axial tensile force is applied to the damper member 14, and the damper member 14 yields only by the bending moment. A clearance is secured between the nut 18 screwed to the upper end of the damper member 14 and the upper surface of the base plate 7, and the upper end of the damper member 14 is connected to the base plate 7 so as to be relatively rotatable.

FIG. 1 also shows a roof frame 1 due to a temperature change.
In order not to hinder the expansion and contraction of the base plate 7, the insertion hole 7b of the base plate 7 through which the damper member 14 penetrates is elongated in the short side direction of the base plate 7 which is the expansion and contraction direction of the roof frame 1 as shown in FIG. When the roof frame 1 is opened and contracted, the damper member 14 does not function when the roof frame 1 expands and contracts, but is connected to the roof support 2 so as to function when a dynamic load is applied such as during an earthquake.

In this case, at the time of relative displacement between the roof support 2 and the lower structure 3 in the long hole direction of the insertion hole 7b, that is, in the short side direction of the base plate 7, the damper member 14 contacts the inner peripheral surface of the insertion hole 7b. The damper member 14 does not function until then, and the expansion and contraction of the roof frame 1 is allowed. When the relative displacement exceeds the displacement, the damper member 14 is bent and deformed, and absorbs energy after being plasticized.

At the time of relative displacement between the roof support 2 and the lower structure 3 in the long side direction of the base plate 7, the damper member 14 is bent and deformed from the start of the relative displacement, and absorbs energy after plasticization. When the insertion hole 7b is opened in a circular shape, the damper member 14 is kept in contact with the inner peripheral surface of the insertion hole 7b as in the case of the relative displacement of the base plate 7 in the short side direction.
Does not work.

In FIG. 1- (a), a screw is provided so that only the damper member 14 can be easily recovered and newly installed with the roof support 2 and the support member 10 remaining after the damper member 14 has fulfilled its role. Cut the lower end of the damper member 14 through the lower base plate 11 and fix the nut
By screwing to 19, it is detachably fixed to the lower base plate 11. Damper member that is a steel rod damper
The case where one end of 14 is screwed into the nut 19 corresponds to the seismic isolation support device 9 of claim 3.

If the replacement of only the damper member 14 is not planned, the damper member 14 may be embedded in the lower structure 3 in the form of an anchor bolt or may be implanted in the lower base plate 11. FIG. 2 shows an example of the configuration of the seismic isolation support device 9 according to claim 4, wherein a viscoelastic body or a high damping rubber is used as the damper member 14. The damper member 14 made of a viscoelastic body or a high damping rubber (hereinafter referred to as a viscoelastic body) is directly or indirectly adhered to the base plate 7, the rib plate 8, or the beam member 6 of the roof support 2. Or is directly or indirectly bonded or locked to the lower structure 3 or the lower base plate 11 on any other surface. The viscoelastic body or the like may be in a cylindrical shape as shown in FIGS. 15 and 16 in addition to a plate shape or a block shape as shown in FIGS.

In FIG. 2, an upper plate 20 and a lower plate 21 are joined to the base plate 7 and the lower base plate 11, respectively. A damper member 14 such as a viscoelastic body is interposed between the two plates 20 and 21, and Glued. Here, the surfaces of the upper and lower plates 20, 21 are oriented in two horizontal directions so that the energy absorbing ability of the damper member 14, such as a viscoelastic body, can be exerted at the time of relative displacement in either direction.

In this case, each damper member 14 absorbs energy by shearing and deforming when the base plate 7 and the lower base plate 11 in the in-plane direction of the bonded upper and lower plates 20 and 21 are relatively horizontally displaced. During relative displacement in the out-of-plane direction, the upper and lower plates 20, 21 follow the displacement by bending deformation. Figure 3 shows the damper member
14 shows a seismic isolation support device 9 in which the steel rod damper shown in FIG. 1 and the viscoelastic body shown in FIG. 2 are used in combination. Here, the lower plate 21 is arranged in the same plane as one of the rib plates 8 of the roof support 2 and fixed to the lower structure 3, and
Upper plates 20, 20 are joined to both surfaces of the rib plate 8, and damper members 14 such as viscoelastic bodies are arranged in two layers.

FIG. 4 shows a case where the roof frame 1 is constructed of a general steel structure and the beam member 6 constitutes the roof support 2, and the seismic isolation support device 9 has the same configuration as that of FIG. The damper member 14 such as a viscoelastic body is used in a form subjected to shear deformation as shown in FIGS. 2 to 4, and also as shown in FIG. 16, the roof support 2 and the lower base plate 11, or the lower structure 3 as shown in FIG.
In some cases, it is sandwiched directly or indirectly between the roof support 2 and the lower structure 3 and undergoes compressive deformation at the time of relative displacement between the roof support 2 and the lower structure 3.

FIG. 5 shows an example of the structure of the seismic isolation support device 9 according to the fifth aspect, wherein a friction damper is used as the damper member 14.
The friction damper is, for example, a beam member 6 constituting the roof support 2.
A number of disc springs 24 are provided around a core 23 supported with its axis facing in the horizontal direction.
Or a disc spring 24 and a die circumscribing the core material 23 are arranged.

In this case, the roof support 2 in the axial direction of the core 23
The support member 22 stops when the member is displaced relative to the lower structure 3.
The friction is caused by the relative displacement with respect to 25 and the compression of the disc spring 24 engaged with the support member 22 and the stopper 25 or the sliding of the die engaged with the support member 22 along the core member 23. Absorb energy by force. 6 and 7 show FIG.
In the seismic isolation support device 9 having the same configuration as that of the first embodiment, a configuration example of the seismic isolation support device 9 according to claim 6 in which a viscoelastic body 26 is interposed between the base plate 7 and the receiving plate 12 is shown. Here, as shown in FIG. 7, the lower end of a damper member 14 which is a steel rod damper is screwed into a nut 19 located below the lower base plate 11, the upper end is fixed to the base plate 7 by a nut 18, and both ends are fixed. I have. FIG. 7- (a) shows the side view of FIG. 6- (a).

FIG. 7- (b) is a damper member of a steel rod damper.
When both ends of the damper member 14 are fixed, the base plate 7 and the lower base plate 11 are relatively displaced, and the middle part of the damper member 14 is reduced so as to reduce the axial tensile force generated at the middle part when the damper member 14 is bent and deformed. This shows a case where the groove is bent into a groove shape or the like. In the case of bending, it is formed in an arbitrary shape such as a coil shape or a loop shape in addition to the illustration.

The viscoelastic body 26 interposed between the base plate 7 and the receiving plate 12 is provided in the space secured between the base plate 7 and the receiving plate 12 by the sliding member 16.
It is arranged at a position where there is no interference with the sliding member 16,
The upper surface is adhered to the base plate 7 and the lower surface is adhered to the receiving plate 12, respectively. When the base plate 7 and the receiving plate 12 are relatively displaced, they are sheared to absorb energy together with the damper member 14.

FIGS. 8 to 21 show the roof support 2 connected to the lower structure 3 so as to be displaceable relative to the lower structure 3 on the base plate 7, the roof support 2, or the roof frame 1 around the lower part. It is erected between structure 3 and
A configuration example of a seismic isolation support device 27 according to claim 7, which is constituted by a damper member 14 that generates a damping force when the relative horizontal displacement between the roof support portion 2 and the lower structure 3 is shown.

The seismic isolation support device 27 of claim 7 is a form in which the support member 10 of the seismic isolation support device 9 of claim 1 is absent, and the base plate 7 of the roof support 2 is directly mounted on the lower structure 3. Is equivalent to The base plate 7 is a sliding member 16
Mortar 15 directly on the lower structure 3 with
And is mounted on the anchor plate 30 and is connected to the lower structure 3 by an anchor bolt 28 or the like so as to be relatively horizontally displaceable. As shown in FIG. 8, the insertion hole 7c of the base plate 7 through which the anchor bolt 28 is inserted is formed in a shape or size that allows relative displacement with the anchor bolt 28 fixed to the lower structure 3.

FIG. 8 shows that the damper member 14 is fixed to the lower structure 3 around the roof support 2 by using a plate-shaped damper which is deformed out of plane by receiving a horizontal force, and a rib plate of the roof support 2 is used. 8 shows a case where the damper member 8 and the damper member 14 are connected by a connecting member 29. The damper member 14 shown in FIG.
Has a flange on the fixed side to the lower structure 3, is fixed to the lower structure 3 at the flange, is connected to the connecting member 29 at a deformable portion of the main body portion (web), and is a roof support portion of the main body portion in an out-of-plane direction. At the time of relative displacement between 2 and lower structure 3, the main body is bent and deformed in a cantilever manner. The connecting member 29 follows the relative displacement in the in-plane direction by bending deformation.

FIG. 9 shows a case where the damper member 14 shown in FIG. 8 is installed between the beam member 6 constituting the roof support 2 and the lower structure 3. In this case, since the beam member 6 also functions as the connecting member 29 in FIG. 8, the connecting member 29 is not required. In FIG. 9, the flange of the damper member 14 shown in FIG. 8 is fixed to the beam member 6, and the main body is locked in the out-of-plane direction by receiving members 31, 31 fixed to the lower structure 3 and sandwiching the main body. However, the damper member 14 may be fixed to the lower structure 3 and the receiving members 31, 31 may be fixed to the beam member 6. In addition, since the beam member 6 can be treated as a rigid body in causing the deformation of the damper member 14, the damper member 14 is formed in an H-shaped cross section having a flange at the top and bottom, and both flanges are formed with the beam member 6 and the lower structure 3.
Can be fixed to both.

In the case of FIG. 9, the damper member 14 is not restrained by the receiving members 31, 31 in the in-plane direction of the main body portion, and can be freely displaced relative to the receiving members 31, 31. 8 and 9
Although the damper member 14 is arranged so as to function at the time of relative displacement in one of the two horizontal directions, it may be arranged in two directions. FIG. 10 is a damper member shown in FIG.
14 are placed on both sides of the truss structure roof support 2,
A case is shown in which the connecting member 29 is fixed to the lower structure 3 and penetrated and joined to the ball joint 5.

FIG. 11 shows an example of the structure of a seismic isolation support device 27 according to claim 11, wherein a viscoelastic body or the like is used as the damper member 14. 2 and 3, the damper member 14 is directly or indirectly bonded or locked to the base plate 7, the rib plate 8, or the beam member 6 of the roof support portion 2 on either side as in FIGS. Is directly or indirectly adhered or locked to the lower structure 3 on any surface of.

In FIG. 11, a lower plate 21 is arranged in the same plane as one of the rib plates 8 of the roof support 2 and fixed to the lower structure 3 as in FIG. 20 and 20 are joined, and a damper member 14 such as a viscoelastic body is arranged in two layers. FIG. 12 shows a seismic isolation support device 27 shown in FIG. 8, in which a sliding member 32 for limiting a relative displacement amount with respect to an anchor plate 30 fixed to the lower structure 3 is fixed below the base plate 7 of the roof support 2. A fixing block 33 for securing a space between the sliding member 32 and the anchor plate 30 on the anchor plate 30.
Is fixed, the sliding member 16 is sandwiched between the sliding member 32 and the fixed block 33, and the base plate 7 or the sliding member 32 is connected to the fixed block 33 so as to be relatively horizontally displaceable.

An engaging portion 32a is formed on the lower surface of the periphery of the sliding member 32 so as to be engaged with the fixed block 33 in the horizontal direction. It can be displaced relative to the lower structure 3. The locking portions 32 are formed on both sides in one direction when limiting the relative displacement amount in one direction between the sliding member 32 and the fixed block 33, and on both sides in two directions when limiting the relative displacement amount in two directions. It is formed.

Limiting the amount of relative displacement of the roof support 2 with respect to the anchor plate 30 is based on the sliding member shown in FIG.
32 is fixed to the anchor plate 30, the fixing block 33 is fixed to the base plate 7, the sliding member 16 is sandwiched between the sliding member 32 and the fixing block 33, and the fixing block 33 is fixed to the sliding member 32 or the anchor plate 30. It can also be performed by connecting so that relative horizontal displacement is possible.

FIG. 13 shows a state in which an engaged portion 33a protruding to the outer peripheral side is formed around the fixed block 33 in FIG. 12, and the fixed block 33 is engaged with the engaging portion 32a of the sliding member 32 continuously. A case is shown in which an engaging portion 32b that engages upward with the portion 33a is formed, and the sliding member 32 and the fixing block 33 have pull-out resistance when a vertically upward force is applied to the roof support portion 2. .

In the case of FIG. 13, the sliding member 32 and the fixed block 33
The roof support 2 can be freely horizontally displaced relative to the lower structure 3 and the pull-out resistance is secured, so that the base plate 7 and the sliding member 32 are not necessarily fixed to the fixing block 33.
It is not necessary to bind with the anchor bolt 28 or bolt. FIGS. 14 to 16 show an example of the construction of another seismic isolation support device 27 according to claim 11, in which a damper member 14 such as a viscoelastic body is provided between the beam member 6 and the lower structure 3 constituting the roof support 2.

FIG. 14 shows a damper member 14 such as a viscoelastic body between three plates 34a, 34b and 34a arranged in parallel with each other.
Are arranged and bonded to plates 34a, 34b located on both sides thereof, and these three plates 34a, 34b, 34a are joined to the lower surface of the beam member 6, and the energy absorbing function of the damper member 14 of the lower structure 3 This shows a case where the stoppers 35, 35 are fixed at both sides in the direction in which the force is exerted.

Of the three plates 34a, 34b, 34a, the width of the middle plate 34b is smaller than that of the plates 34a on both sides, and the three plates 34a, 34b, 34a are flat on the plane as shown in FIG. , The intermediate plate 34b is removed, and the beam member 6 is bolted through only the plates 34a, 34a on both sides.
At the time of relative displacement between the beam member 6 and the lower structure 3, the intermediate plate 34b
a, 34a.

The length of the intermediate plate 34b is larger than that of the plates 34a on both sides.
And the lower structure 3 is locked when the relative displacement is more than a certain amount.
The beam member 6 has a lower structure 3 in the longitudinal direction of the intermediate plate 34b.
When a relative displacement is generated with respect to the plates 34a on both sides,
34a is relatively displaced together with the beam member 6 with respect to the intermediate plate 34b, and the damper member 14 such as a viscoelastic body is deformed by shearing.

FIG. 15 shows a state in which a hollow outer tube 36 is fixed to a supporting member 37 fixed to the beam member 6, and a rod-shaped core 38 is disposed inside the outer tube 36 so as to be movable in the axial direction. 38 circumference and outer tube 36
A cylindrical damper member 14 such as a viscoelastic body is adhered to the inner peripheral surface, and a stopper 3 is attached to the lower structure 3 at both axial ends of the core member 38.
Shows the case where 5 and 35 are fixed. Both ends of the core member 38 in the axial direction are always locked to the stoppers 35, 35 or at the time of a relative displacement of a certain amount or more between the beam member 6 and the lower structure 3, and the beam member 6 is Outer tube when displaced relative to
36 is displaced relative to the core member 38 together with the beam member 6, and the viscoelastic body and the like undergo shear deformation over the entire circumference.

FIG. 16 shows a state in which a core member 38 is fixed to a support member 37 fixed to the beam member 6, and the damper member 14 such as a viscoelastic body is sandwiched between the support member 37 and the stopper 35 without adhering to any of them. Energy is applied to the damper member 14 by engaging the support member 37 and the stopper 35 and compressing the damper member 14 by the support member 37 and the stopper 35 displaced with respect to the stopper 35 when the beam member 6 is displaced relative to the lower structure 3. Show the case of absorption.

FIG. 17 shows an example of the structure of a seismic isolation support device 27 according to claim 12, wherein a friction damper is used as the damper member 14.
As described above, the friction damper includes a plurality of disc springs 24 arranged around a core 23 horizontally supported by the support member 22 or a disc spring 24 and a die 39 circumscribing the core 23. The support member is configured so that when the beam member 6 is displaced relative to the lower structure 3,
The energy is absorbed by the displacement of the plate 22 relative to the stopper 25 and the compression of the disc spring 24 or the sliding of the die 39 along the core material 23.

FIG. 18 shows a state in which the disc spring 24 of FIG.
A case is shown where a friction damper is formed by arranging only the die 39 slidably around the core member 23 in the axial direction and engaging the die 39 with the support member 22. FIG. 19 shows a case where a lead rod damper or a steel rod damper is used as the damper member 14 and both ends are fixed to the beam member 6 and the lower structure 3. Here, the sleeves 40, 40 through which the damper member 14 is inserted are fixed to the beam member 6 and the lower structure 3, and the end of the damper member 14 is inserted into the sleeve 40, and rubber or the like is provided between the periphery of the damper member 14 and the sleeve 40. The shock applied to the damper member 14 at the time of the relative displacement between the beam member 6 and the lower structure 3 is reduced by filling the cushioning material 41. In the case of a rod-shaped damper, the beam member 6 is formed as shown in FIG.
And the lower structure 3 may be fixed by a nut or the like.

FIG. 20 shows that when the damper member 14 is a steel damper or a lead damper, one end of the damper member 14 is fixed to one of the roof support 2 and the roof frame 1, and the other end is fixed to the lower structure 3. A configuration example of a quake-isolating support device 27 according to claim 9, wherein a clearance is secured in the horizontal direction between the base plate 7 of the roof support 2 and the damper member 14.

On the base plate 7 of the roof support 2, the base plate 7 is welded to the rib plate 8 or the like.
Is fixed, and the upper end of the damper member 14 is connected to the upper base plate 42. When the damper member 14 is a lead rod damper or a steel rod damper, the upper end of the damper member 14 is fixed to the upper base plate 42 with a nut 43. In particular, in the case of a steel rod damper, the damper member 14 can also be used as an anchor bolt 28 for fixing the base plate 7 to the lower structure 3 as shown in the figure.

In FIG. 20, a lead rod damper is used for the damper member 14,
Alternatively, when a steel bar damper is used, a notch 7 d is formed around the damper member 14 of the base plate 7, so that when the base plate 7 and the lower structure 3 are relatively horizontally displaced, the damper member 14 and the base plate 7 that are deformed are formed. Avoid collisions. In addition, by forming an insertion hole through which the damper member 14 is inserted in the base plate 7 and forming the insertion hole to have a diameter larger than the diameter of the damper member 14, a clearance is secured between the two.

When the roof support 2 is displaced relative to the lower structure 3, the base plate 7 is displaced relative to the lower structure 3, and the damper member 14 bends at a position slightly higher than the fixing position to the lower structure 3. . At this time, since the lower end of the fixing side of the damper member 14 does not move, the base plate 7 approaches the damper member 14 on the side where the base plate 7 moves, but collision is avoided by the clearance such as the notch 7d.

In FIG. 20- (a), a cushioning material 44 such as a disc spring is inserted between a nut 43 fixing the upper end of the damper member 14 and the upper base plate 42, so that a relative horizontal displacement can be achieved. The extension deformation of the damper member 14 is reduced. FIG. 20- (d) shows the damper member 14 to facilitate replacement when the damper member 14 is a steel rod damper.
An example of the configuration of a seismic isolation support device 27 according to claim 10, wherein the lower end of 14 is screwed into a nut 19 fixed to the lower structure 3. In this case, the nut 19 is connected to the lower structure 3 while the base plate 7 is connected to the lower structure 3 so as to be relatively displaceable with respect to the lower structure 3.
An anchor plate 30 with stud bolts 45 is arranged on the lower surface of the base plate 7 in order to fix it to the base plate 7.

The anchor plate 30 is fixed to the lower structure 3 by embedding the stud bolt 45 in the lower structure 3 with the nut 19 sandwiched between the anchor plate 30 and the lower structure 3, and at the same time, the nut 19 is It is fixed to the lower structure 3. The base plate 7 is mounted on the anchor plate 30 with the sliding member 16 interposed therebetween. Also in this case, the notch 7d of the base plate 7 is formed around the damper member 14.

FIG. 21 shows that the viscoelastic body 26 is interposed in the space secured by the sliding member 16 between the base plate 7 and the anchor plate 30 fixed to the lower structure 3, and is bonded to the base plate 7 and the anchor plate 30. A configuration example of the seismic isolation support device 27 according to claim 13 is shown. In FIG. 21, the damper member 14 may be used in some cases.

[0070]

According to the first to sixth aspects of the present invention, a support member comprising a lower base plate and a receiving plate integrated with the lower base plate with a vertical distance from the lower base plate is fixed to the lower structure. The roof support of the frame is supported on the receiving plate, and the roof support is connected to the receiving plate in the base plate so that it can be displaced horizontally relative to the lower structure. The relative horizontal displacement between the roof support and the substructure can be tolerated, and the transmission of seismic motion input to the substructure to the roof frame can be reduced.

Since the horizontal force and the vertical force due to the seismic motion acting on the roof support are reduced, the load on the components constituting the roof frame is reduced, so that the member cross section can be reduced.
The entire roof frame can be reduced in weight. Since the load on the lower structure is reduced by reducing the weight of the roof frame, the dimensions of the members of the lower structure can be reduced, and the frame cost of the entire roof structure can be reduced.

Also, the roof support and the surrounding roof frame,
In order to install a damper member that generates damping force at the time of relative horizontal displacement between the roof support and the lower structure straddling between the support member and the lower structure, it suppresses the increase of the relative horizontal displacement between the roof support and the lower structure, Energy can be absorbed when the roof frame vibrates relative to the substructure. When the roof frame expands and contracts due to a temperature change, the roof support portion is relatively displaced with respect to the receiving plate, so that the roof support portion can follow the expansion and contraction.

According to a third aspect of the present invention, a steel rod damper is used as the damper member, and the fixed end is screwed to a roof support, a roof frame, or a nut fixed to a support member or a lower structure. When the necessity of replacement occurs after fulfilling the energy absorbing function, it can be easily handled. According to the sixth aspect, the viscoelastic body is interposed between the base plate and the receiving plate of the roof support, so that the energy at the time of roof frame vibration is absorbed by the damper member and the viscoelastic body, so that the vibration suppressing effect is enhanced.

In the first to sixth aspects of the present invention, the support member, the roof support portion, and the damper member provided between the support member and the roof support portion are provided, and the damper member is substantially added as compared with the case of the pin support or the roller support. Since it is a simple configuration, the seismic isolation structure can reduce the complexity of installation and increase costs. In claim 7 to claim 13, the roof support is connected to the lower structure in the base plate so as to be relatively horizontally displaceable, and the damper member is erected between the roof support and the surrounding roof frame and the lower structure, While securing the pull-out resistance at the roof support, it allows relative horizontal displacement between the roof support and the lower structure due to horizontal force, and reduces the transmission of seismic motion input to the lower structure to the roof frame. The relative horizontal displacement between the
Energy can be absorbed when the roof frame vibrates with respect to the substructure.

When the roof frame expands and contracts due to a change in temperature, the roof support is displaced relative to the lower structure, so that the roof support can follow the expansion and contraction. By reducing the horizontal and vertical forces acting on the roof bearing,
Since the load on the components constituting the roof frame is reduced, the cross section of the members can be reduced, and the entire roof frame can be reduced in weight. Because the weight of the roof frame reduces the burden on the substructure,
It is also possible to reduce the dimensions of the members of the lower structure, and to reduce the frame cost of the entire roof structure.

According to the tenth aspect, when a steel rod damper is used as the damper member, the fixed end is screwed into a roof support, a roof frame, or a nut fixed to a lower structure, so that the damper member has energy. When the necessity of replacement occurs after performing the absorption function, it can be easily handled. According to the thirteenth aspect, since the viscoelastic body is interposed between the base plate and the lower structure of the roof support portion, the energy at the time of roof frame vibration is absorbed by the damper member and the viscoelastic body, and the vibration suppressing effect is enhanced.

[0077] In claims 7 to 13, the roof support portion is provided with:
It is composed of a damper member installed between the roof support and the lower structure.Since it is a simple configuration with a damper member added substantially more than the case of a pin support or a roller support, the installation is complicated by the seismic isolation structure. And increase in costs can be suppressed. In particular, since the support member in the case of the first to sixth aspects is absent, the configuration is simplified compared to the case of the first to sixth aspects.

In the first to sixth aspects of the present invention, in which the support member is provided and the roof support portion is lifted from the lower structure, the roof support portion and the damper member can be compactly stored in a limited plane. It is possible to cope with a case where the installation place of the damper member is narrow. According to claims 7 to 13, in which the damper member is separated from the roof support portion without providing a support member, it may be necessary to secure an installation place of the damper member around the roof support portion. It can be done easily.

[Brief description of the drawings]

1 (a) is an elevation view showing an example of the configuration of a seismic isolation support device according to claim 3, (b) is a cross-sectional view taken along the line xx of (a), and (c) is a y-axis of (a). FIG. 4 is a sectional view taken along line -y.

FIG. 2 is an elevation view showing a configuration example of a seismic isolation support device according to claim 4;

3 (a) is an elevation view showing another example of the structure of the seismic isolation support device of claim 4, and FIG. 3 (b) is a sectional view taken along line xx of FIG. 3 (a).

FIG. 4 is an elevation view showing another example of the configuration of the seismic isolation support device according to claim 4;

FIG. 5 is an elevation view showing a configuration example of the seismic isolation support device of claim 5;

FIG. 6 (a) is an elevation view showing an example of the structure of a seismic isolation support device according to claim 6, and FIG. 6 (b) is a sectional view taken along line xx of FIG. 6 (a).

7A is a side view of FIG. 6A, and FIG. 7B is an elevation view showing a modified example of the damper member.

8 (a) is an elevation view showing an example of the configuration of a seismic isolation support device according to claim 8, and FIG. 8 (b) is a sectional view taken along line xx of FIG. 8 (a).

9 (a) is an elevation view showing another example of the structure of the seismic isolation support device according to claim 8, and FIG. 9 (b) is a sectional view taken along line xx of FIG. 9 (a).

10 (a) is an elevation view showing another example of the structure of the seismic isolation support device of claim 8, and FIG. 10 (b) is a sectional view taken along line xx of FIG. 10 (a).

FIG. 11 (a) is an elevation view showing an example of the configuration of a seismic isolation support device according to claim 11, and FIG. 11 (b) is a sectional view taken along line xx of FIG. 11 (a).

FIG. 12 is an elevation view showing another example of the structure of the seismic isolation support device of claim 8;

FIG. 13 is an elevation view showing a modification of FIG. 12;

14 (a) is an elevation view showing another example of the structure of the seismic isolation support device according to claim 11, and FIG. 14 (b) is a sectional view taken along line xx of FIG. 14 (a).

FIG. 15 is an elevation view showing another example of the configuration of the seismic isolation support device of claim 11;

FIG. 16 is an elevation view showing another example of the configuration of the seismic isolation support device of claim 11;

FIG. 17 is an elevation view showing a configuration example of the seismic isolation support device of claim 12;

FIG. 18 is an elevation view showing another example of the structure of the seismic isolation support device of claim 12.

FIG. 19 is an elevation view showing another configuration example of the seismic isolation support device of claim 8.

20 (a) is an elevation view showing an example of the configuration of the seismic isolation support device of claim 9, (b) is a cross-sectional view taken along the line xx of (a), and (c) is (a)
(D) is an elevation view showing a modification of a part of (a).

FIG. 21 is an elevation view showing a configuration example of the seismic isolation support device of claim 13;

FIG. 22 is a plan view showing a roof frame.

FIG. 23 is a plan view showing a roof frame.

[Explanation of symbols]

1 ... roof frame, 2 ... roof support, 3 ... substructure,
4 ... truss member, 5 ... ball joint, 6 ... beam member, 7 ...
… Base plate, 7a …… Bolt hole, 7b …… Insertion hole, 7c
…… Insertion hole, 7d …… Notch, 8 …… Rib plate, 9…
... seismic isolation support device, 10 ... support member, 11 ... lower base plate, 12 ... receiving plate, 12a ... bolt holes, 13 ...
... Rib plate, 14 ... Damper member, 15 ... Mortar, 16 ... Sliding member, 17 ... Bolt, 18 ...
… Nut, 19 …… Nut, 20 …… Top plate, 21 ……
Lower plate, 22 ... Support material, 23 ... Core material, 24 ... Disc spring, 25 ... Stopper, 26 ... Viscoelastic body, 27 ... Seismic isolation support device, 28 ... Anchor bolt, 29 ... Connection member, 30 ……
Anchor plate, 31 receiving member, 32 sliding member,
32a: locking portion, 32b: engaging portion, 33: fixed block, 33a: engaged portion, 34: plate, 35: stopper, 36: outer tube, 37: support member, 38: core material, 39: die, 40: sleeve, 41: cushioning material, 42: upper base plate, 43: nut, 44: cushioning material, 45: stud bolt.

Continued on the front page (72) Inventor Pompo Petch 6-2-10 Ginza, Chuo-ku, Tokyo Inside Tomoe Corporation (72) Inventor Tetsumi Okamoto 6-2-10 Ginza, Chuo-ku Tokyo Inside the corporation

Claims (13)

[Claims] 1. A support member comprising a lower base plate fixed to a lower structure, a receiving plate integrated with the lower base plate at a vertical distance from the lower base plate, and mounted on the receiving plate of the supporting member. A roof support of the roof frame connected to the receiving plate such that the base plate can be displaced relative to the lower structure relative to the lower structure, and straddling between the roof support, or the roof frame and its supporting members in the vicinity thereof, or the lower structure. A seismic isolation support device for a roof frame that is constructed and includes a damper member that generates a damping force when a relative horizontal displacement occurs between the roof bearing portion and the lower structure. 2. The damper member is a steel damper or a lead damper, at least one end of which is fixed to one of the roof support and the surrounding roof frame, or one of the support member and the lower structure. The seismic isolation support device for the roof frame as described. 3. The damper member is a steel rod damper, and is screwed to a nut fixed to one of a fixed roof-side support portion and a surrounding roof frame, or a support member and a lower structure. The seismic isolation support device for a roof frame according to claim 2. 4. The damper member is made of a viscoelastic material or high-damping rubber, and one of the surfaces is directly or indirectly bonded to one of the roof support portion and a roof frame around the roof support portion.
2. The seismic isolation support device for a roof frame according to claim 1, wherein the device is locked, and any other surface is directly or indirectly bonded or locked to one of the support member and the substructure. . 5. The damper member is a friction damper, the shaft of which is disposed in a horizontal direction, and one surface of which is axially or directly or indirectly connected to either the roof support portion or the roof frame around it. The seismic isolation support device for a roof frame according to claim 1, wherein the other surface is directly or indirectly locked to one of the support member and the lower structure. 6. The seismic isolation support device for a roof frame according to claim 1, wherein a viscoelastic body is interposed between the base plate of the roof support portion and the receiving plate of the support member. 7. A roof support of a roof frame mounted on the lower structure and connected to the lower structure so that the base plate can be displaced relative to the lower structure relative to the lower structure, a roof support, or a roof frame around the lower frame and the lower structure. And a damper member that generates a damping force when a relative horizontal displacement occurs between the roof support and the lower structure. 8. The roof frame exemption according to claim 7, wherein the damper member is a steel damper or a lead damper, and at least one end of the damper member is fixed to one of the roof support portion and the surrounding roof frame or a lower structure. Seismic support device. 9. One end of the damper member is fixed to one of the roof support portion and the surrounding roof frame, and the other end is fixed to the lower structure, and a clearance is secured in the horizontal direction between the base plate and the damper member. The seismic isolation support device for a roof frame according to claim 8. 10. The damper member is a steel rod damper,
The seismic isolation support device for a roof frame according to claim 8 or 9, wherein the device is screwed to one of a roof support portion on a fixed side and a roof frame around the roof support or a nut fixed to a lower structure. 11. The damper member is made of a viscoelastic material or high-damping rubber, and one of the surfaces is directly or indirectly adhered to or fixed to the roof support portion and the roof frame around the roof support portion. The seismic isolation support device for a roof frame according to claim 7, wherein any other surface is directly or indirectly adhered or locked to the lower structure. 12. The damper member is a friction damper,
The shaft is oriented horizontally and one surface in the axial direction is directly or indirectly locked to the roof support and one of the surrounding roof frame, and the other surface is directly or indirectly The seismic isolation support device for a roof frame according to claim 7, which is locked to a lower structure. 13. A viscoelastic body is interposed between a base plate and a lower structure of a roof support.
13. The seismic isolation support device for a roof frame according to any of 12.