JP5363877B2 - Sliding support structure of structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maintain performance of a sliding bearing body, and to prevent the application of a load to an upper support object structure. <P>SOLUTION: The sliding bearing body 3 is arranged between a support structure 1 and a supported structure 2 constituted by arranging a predetermined interval above this support structure 1. A sliding part 4 for allowing the movement in the horizontal direction of the sliding bearing body 3 to the support structure 1, is formed between the sliding bearing body 3 and the support structure 1. A load of the supported structure 2 is received by allowing a metallic upper plate 5 installed in a lower end part of the supported structure 2 to abut in a surface on a metallic lower plate 6 installed in an upper end part of the sliding bearing body 3. The upper plate 5 and the lower plate 6 are mutually vertically separably formed, and a lateral displacement preventive part is constituted for checking the relative movement in the lateral direction between the supported structure 2 and the sliding bearing body 3 by arranging a fitting part 7 mutually vertically fitted to the upper plate 5 and the lower plate 6. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  A sliding support is disposed between the supporting structure and a supported structure constructed with a predetermined interval above the supporting structure, and the sliding support is provided between the sliding support and the supporting structure. The present invention also relates to a sliding support structure for a structure in which a sliding portion that allows the sliding support body to move in the horizontal direction with respect to the support structure is formed.

Conventionally, the sliding support body is generally fixed integrally to the lower end of the supported structure, and when a seismic motion occurs, the sliding support body is supported by a sliding portion between the sliding support body and the support structure. On the other hand, the supported structure is configured to be allowed to move in the horizontal direction.
However, when the seismic motion is a vertical motion, the supported structure may be lifted with respect to the support structure, and even a very small amount may cause all surfaces to be separated and re-contacted at the sliding part. From the viewpoint of sliding soundness and performance guarantee, it is not preferable.
Therefore, a structure that prevents separation between the support structure and the supported structure has also been proposed (see, for example, Patent Document 1).

JP 2005-140283 A

  In the conventional technology described above, when vertical earthquake motion occurs, there is a risk that a large load acts on the separation prevention portion and breaks, and there is a risk that an external force in the vertical direction acts on the upper supported structure. There is a problem.

  Accordingly, an object of the present invention is to provide a sliding bearing body for a structure that eliminates the above-described problems and maintains the performance of the sliding bearing body while applying no load to the upper supported structure.

According to a first characteristic configuration of the present invention, a sliding bearing is disposed between a supporting structure and a supported structure constructed with a predetermined interval above the supporting structure, and the sliding bearing is arranged. A sliding support structure of a structure in which a sliding portion is formed between the body and the support structure to allow the sliding support body to move in a horizontal direction with respect to the support structure. The metal upper plate attached to the lower end portion of the support structure is brought into surface contact with the metal lower plate attached to the upper end portion of the sliding bearing so as to receive the load of the supported structure, and the upper plate and The lower plate is formed so as to be vertically separated from each other, and a fitting portion is provided on the upper plate and the lower plate so as to be fitted to each other in the vertical direction, thereby laterally moving the supported structure and the sliding support body. configure the lateral displacement preventing section for preventing relative movement, than the friction coefficient of the sliding portion, and the upper plate In the place that is to increase the friction coefficient of the serial under plates.

According to the first characteristic configuration of the present invention, the metal upper plate attached to the lower end portion of the supported structure is brought into surface contact with the metal lower plate attached to the upper end portion of the sliding bearing so as to form the object. While receiving the load of the support structure, the upper plate and the lower plate are formed so as to be vertically separated from each other, so that the upper and lower plates support the load of a large supported structure with a simple and inexpensive structure. In addition, when the vertical earthquake motion occurs, the sliding structure is prevented from being separated and the supported structure is allowed to lift.
Therefore, it is possible to prevent the supported structure from being damaged while preventing the excessive load from acting on the sliding bearing body and the upper supported structure, and maintaining the sliding isolation performance against the lateral ground motion. Became.
In addition, when the upper plate and the lower plate are separated from each other, there is a risk that they may be displaced from each other in the lateral direction by the fitting portions provided on the upper plate and the lower plate.
Therefore, the sliding support structure can be maintained at a high performance with an inexpensive structure.
In addition, when a lateral ground motion occurs, a sliding action at a sliding portion having a small friction coefficient is preferentially exhibited, and a lateral seismic isolation effect can be sufficiently expected.
On the other hand, the lateral movement is suppressed while allowing a relative vertical movement between the upper plate and the lower plate, and the sliding bearing performance can be maintained high.

  According to a second characteristic configuration of the present invention, in order to constitute the fitting portion, a protruding portion that externally fits the outer peripheral portion of the lower plate extends downward from the upper plate.

According to the second characteristic configuration of the present invention, the outer peripheral portion of the lower plate is externally fitted by the projecting portion extending downward from the upper plate, so that the water between the upper surface of the lower plate and the upper plate can be reduced. And the intrusion of foreign matter and the like, and the lower plate is protected from the outside.
Therefore, the separation between the upper plate and the lower plate can be ensured over a long period of time.

  A third characteristic configuration of the present invention is that the projecting portion is formed in a cylindrical shape surrounding the entire circumference of the lower plate.

  According to the third characteristic configuration of the present invention, the upper surface of the lower plate is reliably protected by the cylindrical projecting portion surrounding the entire circumference of the lower plate, and corrosion or damage due to intrusion of water or foreign matter can be prevented. Therefore, the separation performance between the upper plate and the lower plate can be maintained high.

Longitudinal front view of the embodiment Main part enlarged vertical sectional view of the embodiment in normal time Expanded longitudinal sectional view of the main part at the time of floating of the embodiment Exploded perspective view of upper and lower plates

  Embodiments of the present invention will be described below with reference to the drawings.

As an embodiment of the sliding support structure of the structure of the present invention, as shown in FIGS. 1 to 4, a support structure 1 as a foundation of a building such as a building and a predetermined interval above the support structure 1. The sliding support 3 is arranged between the supported structure 2 and the building constructed by providing a horizontal support to reduce the influence on the external force in the horizontal direction by allowing the horizontal relative movement due to the earthquake. It is set up.
A sliding portion 4 is formed between the sliding support 3 and the support structure 1 to allow the sliding support 3 to move in the horizontal direction with respect to the support structure 1.
Between the supported structure 2 and the sliding support 3, a metal upper plate 5 attached to the lower end of the supported structure 2 and a metal lower plate 6 attached to the upper end of the sliding support 3. The upper plate 5 and the lower plate 6 are formed so as to be vertically separated from each other.

  The upper plate 5 and the lower plate 6 are each provided with a fitting portion 7 that fits up and down to constitute a lateral slip prevention portion that prevents relative movement of the supported structure 2 and the sliding support body 3 in the lateral direction. It is.

  To construct the sliding portion 4 between the support structure 1 and the sliding bearing body 3, FIG. As shown in FIG. 3, a stainless steel plate 10 is laid on the upper surface of the base layer 9 of the support structure 1, and a sliding surface 12 having a fluorine coating layer 11 is provided on the surface of the stainless steel plate 10. The sliding support 3 is mounted so as to be relatively movable in the horizontal direction.

The sliding support body 3 is provided with a sliding portion 13 with respect to the sliding surface 12 on the lower surface in order from the bottom, and a laminated rubber layer 14 and a flange-like metal lower plate 6 are provided on the upper portion to be integrated.
The metal lower plate 6 has a flange protective plate 16 integrally connected to a flange protective plate 16 and an upper plate 5 on an upper base plate 15 in which a normal laminated rubber layer 14 is integrated on the lower side. On the other hand, a projecting surface portion 16A that receives a load from above by contacting the surface is integrally formed.

  As shown in FIG. 4, the fitting portion 7 is configured so that the protruding portion 8 that externally fits the outer peripheral portion of the protruding surface portion 16 </ b> A of the lower plate 6 is separated from the upper plate 5 at a plurality of locations in the circumferential direction of the upper plate 5. It protrudes downward.

The friction coefficient between the upper plate 5 and the lower plate 6 is larger than the friction coefficient (0.011 to 0.075) of the sliding portion 4 (about 0.2), and at the time of occurrence of lateral earthquake motion, The sliding action at the sliding portion 4 having a small friction coefficient is preferentially exhibited, and a sufficient seismic isolation effect in the lateral direction can be expected.
On the other hand, the lateral movement is suppressed while allowing a relative vertical movement between the upper plate 5 and the lower plate 6, and the sliding bearing performance can be maintained high.

In order to assemble the sliding support structure, the sliding support body 3 in which the upper base plate 15 is integrated with the upper portion of the laminated rubber layer 14 is prepared in advance, and the support structure 1 is sequentially formed from the bottom. The sliding support 3 is placed, and a flange protection plate 16 is placed on the upper base plate 15 at the upper end of the sliding support 3 and is integrally connected by a bolt 17 to form the lower plate 6. The upper plate 5 is placed on the upper plate 5, and the column portion is integrally formed by placing concrete as a part of the supported structure 2 above the upper plate 5.
[Another embodiment]
Other embodiments will be described below.

<1> The supported structure is not limited to a building, but may be mechanical equipment or various measuring equipment that needs to be prevented from being damaged by vibration during an earthquake.
<2> Although the sliding part has shown the example which provided the sliding surface which forms a fluorine coat layer, it may comprise not only that but another material and structure.
<3> In addition to the structure that allows relative movement by sliding contact between the surfaces, the sliding portion may be provided with a rolling member to make a relative movement.
<4> The protrusion may be formed in a cylindrical shape that surrounds the entire periphery of the lower plate. In this case, the upper surface of the lower plate is reliably secured by the cylindrical protrusion that surrounds the entire periphery of the lower plate. Therefore, corrosion and damage due to intrusion of water and foreign matter can be prevented, and therefore the separation performance between the upper plate and the lower plate can be kept high.
<5> The bolt 17 for integrally connecting the upper base plate 15 and the flange protection plate 16 is mounted from the bottom to the top as well as from the top to the bottom as shown in FIGS. Also good.

  In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry. In addition, it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.

  Can be used for seismic isolation of buildings and other installations.

DESCRIPTION OF SYMBOLS 1 Support structure 2 Supported structure 3 Sliding bearing body 4 Sliding part 5 Upper board 6 Lower board 7 Fitting part 8 Protrusion part

Claims (3)

A sliding bearing is disposed between the support structure and a supported structure constructed at a predetermined interval above the support structure,
A sliding support structure of a structure in which a sliding portion is formed between the sliding support body and the support structure to allow the sliding support body to move in a horizontal direction with respect to the support structure. ,
The metal upper plate attached to the lower end portion of the supported structure is brought into surface contact with the metal lower plate attached to the upper end portion of the sliding bearing to receive the load of the supported structure, and the upper The plate and the lower plate are formed to be vertically separated from each other,
The upper plate and the lower plate are each provided with a fitting portion that fits up and down to constitute a lateral slip prevention portion that prevents relative movement in the lateral direction between the supported structure and the sliding support ,
A sliding support structure for a structure in which a friction coefficient between the upper plate and the lower plate is larger than a friction coefficient of the sliding portion .   The sliding support structure for a structure according to claim 1, wherein a projecting portion that externally fits the outer peripheral portion of the lower plate extends downward from the upper plate to constitute the fitting portion.   The sliding support structure for a structure according to claim 2, wherein the protruding portion is formed in a cylindrical shape surrounding the entire periphery of the lower plate.

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