KR101261781B1 - Multiple sliding isolation bearing - Google Patents

Abstract

PURPOSE: A multi sliding vibration isolation device is provided to reduce the height and the horizontal area and reduce the size by reducing the number of horizontal elastic bodies. CONSTITUTION: A multi sliding vibration isolation device(100) comprises a lower and an upper guide member(110,120) and a first and a second sliding bearing(130a,130b). The lower guide member and the upper guide member include sliding sections(111,121), and guide units(113,123) are formed along the periphery of a sliding section. The first sliding bearing and the second sliding bearing are installed between the lower and the upper guide member and shares the load of the upper structure. The sliding bearing comprises a lower and an upper slide member(132,134), an elastic pad(136), and a pin(133).

Description

Multiple sliding isolation bearing

The present invention relates to a sliding seismic isolator, and in particular, the bearing supporting the load of the upper structure while sliding the horizontal structure between the support structure and the upper structure by earthquake, etc., and also the impact force acting between the support structure and the upper structure The present invention relates to a sliding seismic isolator for buffering and absorbing.

In general, a seismic isolator is a device installed between a support structure and an upper structure so that an upper structure such as a top plate, which is a slab structure of a bridge, is properly mounted on a supporting structure such as a pier supporting the same. There are various forms and functions depending on the supporting load.

Some of the seismic isolators are installed on the fixed end of the bridge to elastically support only the load in the vertical direction of the upper structure and do not allow the upper structure to move in the horizontal direction. To allow thermal expansion or thermal contraction of the upper structure to be supported, and while the bearing slides within a limited range to cushion and absorb the force acting in the horizontal direction according to wind pressure, traveling, stopping, earthquake, etc. of the vehicle or train, Some may allow movement in the horizontal direction. Such a structure isolator is disclosed in the registration publication of the registration number 10-0757749 "structure isolator" (hereinafter referred to as the invention of the prior application).

The prior application has a lower member provided on a support structure having a pair of first supports, and an upper member provided on a bottom surface of an upper structure supported by the support structure having a pair of second supports. A first intermediate member disposed in a horizontal direction with the lower member, the first intermediate member having a first groove or a first protrusion toward the upper portion, and cushioning a horizontal force acting between the first intermediate member and the lower member At least one pair of the first horizontal elastic body, the upper member is installed so as to be slidable in the horizontal direction, is formed toward the bottom is coupled to the first groove or the first projection at least one for the first intermediate member A second intermediate member having a second projection or a second groove to limit movement in the horizontal direction, and both side surfaces of the second intermediate member and the pair of second paper; It is respectively provided between the large and has a configuration in which a second elastic member to the horizontal to buffer the horizontal force acting between the second intermediate member and the upper member.

As described above, the present invention has a merit that the length of the horizontal elastic body can be drastically reduced, and accordingly, the size and thickness of the upper member and the lower member can be reduced. Since the occupied horizontal area is very large and the mounts for supporting the horizontal elastic bodies are to be mounted on the first intermediate member and the second intermediate member, respectively, to support the load, the height of the base isolation apparatus is also increased.

The present inventors have found that there is a problem in that the seismic isolator of the above-described prior invention has to use an elastic body arranged in the horizontal direction in order to have a restoration function in the horizontal direction.

An object of the present invention is to provide a sliding seismic isolator that can significantly reduce the horizontal area compared to the conventional sliding seismic isolator.

Another object of the present invention is to provide a sliding seismic isolator that can reduce the height compared to the conventional sliding seismic isolator.

Another object of the present invention is to provide a sliding seismic isolator that can further reduce the size of the conventional sliding seismic isolator.

Still another object of the present invention is to provide a sliding seismic isolating device which allows a large horizontal displacement while having a small size.

Still another object of the present invention is to provide a sliding seismic isolator having excellent damping performance.

Still another object of the present invention is to provide a sliding seismic isolator capable of stably supporting the load of the superstructure while having a small size.

Still another object of the present invention is to provide a sliding seismic isolator capable of providing a horizontal restoring force to a supporting upper structure without an elastic body acting in a horizontal direction.

The multiple sliding seismic isolator according to the present invention is installed on a supporting structure to support the load of the upper structure while allowing a constant horizontal displacement between the support structure and the upper structure and to cushion the impact force acting in the horizontal direction during an earthquake. A sliding seismic isolator for absorbing, comprising: a lower guide member having a first sliding region and having a first guide portion protruding upward along a circumference of the first sliding region and installed on the support structure; An upper guide member having a second sliding area and protruding downwardly along a circumference of the second sliding area and installed on a bottom surface of the upper structure; A lower surface is slidably surface-contacted to one side of the first sliding region and an upper surface is installed between the lower guide member and the upper guide member in a state of slidable surface-contacting one side of the second sliding region. A first sliding bearing for sharing and supporting the load of the superstructure which is transmitted through; And a lower surface between the lower guide member and the upper guide member in a state where the lower surface is slidably contacted with the other side of the first sliding region and the upper surface is slidably contacted with the other side of the second sliding region. It has a configuration including a second sliding bearing for supporting by sharing the load of the superstructure that is transmitted through.

The first sliding bearing and the second sliding bearing may include a lower slide member having a lower surface supported in the first sliding region, an upper slide member having an upper surface in surface contact with the second sliding region, the lower slide member and the upper slide member. The one end is fixed to any one of the lower slide member and the upper slide member and the other end is inserted into a groove formed in the other one of the lower slide member and the upper slide member through the elastic pad installed therebetween and the elastic pad. The horizontal displacement of the upper slide member relative to the lower slide member is preferably configured to include a pin that allows the vertical rotation.

In some cases, the first sliding bearing and the second sliding bearing are provided with a sliding member contacting any one of the first sliding region and the second sliding region on one surface thereof, and the other surface forms a convex spherical or cylindrical surface. The other side may have a rotation allowable member and a rotation allowance groove coupled to the spherical surface or the cylindrical surface, and the other surface may include a groove member contacting the other one of the first sliding region and the second sliding region.

It is preferable that a sliding member is provided on the contact surfaces of the first sliding bearing, the second sliding bearing, the first sliding region, the second sliding region, the first guide portion and the second guide portion.

The first sliding area is formed to be inclined so as to become closer to the horizontal center line that divides the lower guide member from side to side, and the second sliding area is gradually closer to the horizontal center line to divide the upper guide member to the left and right. It is formed to be inclined to be lowered, and one of the first sliding bearing and the second sliding bearing is disposed in the left region and the other is the right side with respect to the horizontal center line dividing the lower guide member or the upper guide member from side to side. More preferably, it is arranged in the area.

The first guide portion and the second guide portion may have a portion in which the portions facing each other toward the front in the front-rear direction center are gradually narrower and portions in which the portions facing the rear toward the rear are gradually narrower.

In some cases, one of the first guide portion and the second guide portion may be a portion in which the facing portion becomes narrower toward the front in the front-rear direction center and a portion in which the facing portion becomes narrower in the rearward direction. And the other one of the first guide part and the second guide part has a part disposed in parallel so that the first sliding bearing and the second sliding bearing can move only in one direction of the front, rear, left and right. May have

In some cases, the shaft holes are formed in the horizontal direction at positions facing each other of the first sliding bearing and the second sliding bearing, and the two shaft holes facing each other between the first sliding bearing and the second sliding bearing face each other. The shaft members are respectively inserted into the shaft member, and an elastic body for elastically supporting the first sliding bearing and the second sliding bearing is installed on the outer peripheral surface of the shaft member between the first sliding bearing and the second sliding bearing. It is,

The shaft hole may be formed to have a length to allow the first sliding bearing and the second sliding bearing to approach or move away from each other without being disturbed by the shaft member.

In some cases, each of the first sliding region and the second sliding region is formed in a horizontal plane.

One of the first sliding bearing and the second sliding bearing is disposed in the left region and the other is disposed in the right region, based on a horizontal center line that divides the lower guide member or the upper guide member from side to side. Can have

Even in this case, shaft holes are formed in the horizontal direction at positions facing the first sliding bearing and the second sliding bearing, respectively, and the two shaft holes are opposite to each other between the first sliding bearing and the second sliding bearing. Inserted shaft members are respectively installed, and an elastic body for elastically supporting the first sliding bearing and the second sliding bearing is installed on the outer peripheral surface of the shaft member between the first sliding bearing and the second sliding bearing. There is,

The shaft hole may be formed to have a length to allow the first sliding bearing and the second sliding bearing to approach or move away from each other without being disturbed by the shaft member.

In some cases, the lower surface is slidably contacted with a portion of the first sliding region and the upper surface is slidably contacted with a portion of the second sliding region and is provided between the lower guide member and the upper guide member. It may further include one or more third sliding bearing for sharing and supporting the load of the upper structure that is transmitted through the upper guide member.

The multiple sliding seismic isolator according to the present invention can reduce the horizontal area and height, can not use the horizontal elastic body or can reduce the number of the required horizontal elastic body can significantly reduce its size compared to the conventional one.

The multiple sliding seismic isolator according to the present invention can allow a large horizontal displacement while being small in size.

In some cases, the multiple sliding seismic isolator according to the present invention has excellent damping performance because it has the function of cushioning / absorbing the horizontal impact force by the double friction of the sliding bearing and the elasticity of the horizontal elastic body.

In addition, the multiple sliding seismic isolator according to the present invention can support the load of the upper structure because the sliding bearing supports the load of the upper structure in two places at intervals.

In addition, in some cases, the base isolation device according to the present invention can provide a restoring force in the horizontal direction without a horizontal elastic mechanism.

1 is a perspective view of a multiple sliding seismic isolator according to the present invention,
Figure 2 is an exploded perspective view of the multiple sliding seismic isolator shown in Figure 1,
3 is a cross-sectional view according to II of FIG. 1 in a state in which the multiple sliding seismic isolator shown in FIG. 1 is installed between the supporting structure and the upper structure;
4 is a plan view of the state removing the upper guide member in FIG.
5 is a cross-sectional view showing a state in which the upper guide member of the multiple sliding seismic isolator shown in FIG. 1 is moved to the right;
6 is a plan view showing a state in which the upper guide member is moved to the right;
7 is a cross-sectional view showing a state in which the upper guide member is moved to the left;
8 is a plan view showing a state in which the upper guide member of the multiple sliding seismic isolator shown in FIG.
9 is a plan view showing a state in which the upper guide member of the multiple sliding seismic isolator shown in FIG.
10 is a plan view for explaining another embodiment of the lower guide member and the upper guide member;
11 is a cross-sectional view showing another embodiment of the multiple sliding seismic isolator according to the present invention;
12 is a plan view of a state in which the upper guide member is removed in the multiple sliding seismic isolator shown in FIG.
13 is a cross-sectional view showing a modified example of the multiple sliding seismic isolator shown in FIGS.
14 is a cross-sectional view showing another embodiment of a multiple sliding seismic isolator according to the present invention;
15 is a cross-sectional view showing another embodiment of a multiple sliding seismic isolator according to the present invention;
16 to 18 are cross-sectional views showing another embodiment of the multiple sliding seismic isolator according to the present invention,
19 is a plan view for explaining a modification of the multiple sliding seismic isolator shown in Figures 1 to 4,
20 is a plan view for explaining another modified example of the multiple sliding seismic isolator shown in FIGS.
FIG. 21 is a cross-sectional view for illustrating another modified example of the multiple sliding seismic isolator shown in FIGS. 1 to 4.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a multiple sliding seismic isolator according to the present invention, Figure 2 is an exploded perspective view of the multiple sliding seismic isolator shown in Figure 1, Figure 3 is a multiple sliding seismic isolator shown in Figure 1 between the support structure and the upper structure 1 is a cross-sectional view taken along line II of FIG. 1, and FIG. 4 is a plan view of the upper guide member removed from FIG. 1.

1 to 4, the multiple sliding seismic isolator 100 according to the present invention is installed on a supporting structure 10, such as a bridge, while supporting the load of the upper structure 20, such as bridge deck, the upper structure 20 In addition to receiving a horizontal displacement according to the thermal deformation of the) and to support the buffer structure 10 and the upper structure 20 to be supported when the earthquake occurs to be able to absorb and absorb the impact force acting in the horizontal direction between each other.

1 to 4, the multiple sliding seismic isolator 100 according to the present invention includes a lower guide member 110. The lower guide member 110 is installed on a supporting structure 10 such as a piers, and is provided along a circumference of the first sliding region 111 and the first sliding region 111 and protrudes upward. The guide part 113 is provided. This first guide portion 113 is disposed along a hexagonal path. Portions facing left and right of the first guide portion 113 are arranged to be gradually narrowed toward each other toward the front and rearward from the center of the front-rear direction.

2 to 4, a sliding member SM1 made of a stainless steel plate or the like is mounted on an inner surface of a portion of the first guide portion 113 facing left and right.

The upper surface of the lower guide member 110 disposed inside the first guide part 113 as described above becomes the first sliding region 111, and thus the first sliding region 111 also forms a hexagon. In the first sliding region 111, a sliding member SM1 such as a stainless steel plate is mounted.

As can be seen in Figures 2 to 4, in the multiple sliding seismic isolation device 100 according to this embodiment, the first sliding region 111 is symmetrical with respect to the lower guide member 110 or the upper guide member 120. It is formed to be inclined so as to get closer to the horizontal center line 115 to be divided. Accordingly, the first sliding region 111 of the lower guide member 110 is divided into left and right based on the horizontal center line 115 in the front and rear directions. The first sliding region 111 has the highest portion of the center line 115, and the height of the surface gradually decreases from the center line 115 toward the left side and toward the right side, and the left and right sides have the left inclined plane 111 a and the right inclined plane ( 111b). Accordingly, the first sliding region 111 is formed to be inclined so as to get closer to the center line 115 at both left and right edges, and the cross section has a mountain shape having the center line 115 as a peak as shown in FIG. 3. Doing.

Preferably, the first sliding region 111 has no change in the height of the surface in the front-rear direction parallel to the center line 115.

Accordingly, the first sliding bearing 130a described later acts on the upper guide member 120 when the external sliding force is removed to the right by the upper guide member 120 moving to the right by an external force such as an earthquake. Under the load of the upper structure 20, it is possible to slide down the left inclined surface 111a to the left to return to the initial position as shown in FIG. Similarly, the second sliding bearing 130b is dragged to the left by the upper guide member 120 moving to the left by an external force such as an earthquake, and when the external force is removed, the upper structure 20 acting on the upper guide member 120. By sliding under the load of the right side it is possible to return to the initial position as shown in FIG.

That is, the sliding seismic isolator 100 according to the present invention may provide a restoring force in left and right directions with respect to the upper structure 20 supported without the horizontal elastic body.

As described above, the first guide portion 113 is disposed along a hexagonal path, and accordingly, the first guide portion 113 has a portion in which the facing portion is gradually narrowed toward the front or the rear. . This is because the first sliding bearing 130a and the second sliding bearing 130b, which will be described later, move closer to the center line 115 as the first and second sliding bearings 130b move forward or backward, and thus, the first sliding bearing 130a and the second sliding bearing 130b. The height of the surface supporting the bearing 130a and the second sliding bearing 130b is gradually increased, so that when the external force is removed, the first sliding bearing 130a and the second sliding bearing 130b become the upper structure 20. It is also possible to return to the initial position shown in Fig. 4 in the front-rear direction by the gravity of.

That is, the sliding isolation device 100 according to the present invention may also provide a restoring force in the front-rear direction with respect to the upper structure 20 supported without the horizontal elastic body.

Therefore, the sliding seismic isolator 100 according to the present invention as shown in FIGS. Resilience can be provided.

1 to 4, the multiple sliding seismic isolator 100 according to the present invention includes an upper guide member 120. The upper guide member 120 is installed on the bottom surface of the upper structure 20 such as a bridge deck, and is installed along the circumference of the second sliding region 121 and the second sliding region 121 and protrudes downward. The two guide part 123 is provided. The second guide part 123 is also disposed along a hexagonal path corresponding to the first guide part 113, and the parts facing left and right are gradually narrower toward the front and rearward from the front-rear center. have. The upper guide member 120 is different only in that the height of the second guide portion 123 is formed higher than the first guide portion 113 of the lower guide member 110, the rest of the lower guide member 110 It has a symmetrical shape with. Of course, the height of the second guide portion 123 is not necessarily higher than the height of the first guide portion 113.

2 to 4, a sliding member SM1 made of a stainless steel plate or the like is mounted on the inner surface of the second guide portion 123. As shown in FIG.

The bottom surface of the upper guide member 120 inside the second guide part 123 as described above becomes the second sliding area 121, and thus the second sliding area 121 also has a hexagonal shape. In the second sliding area 121, a sliding member SM1 such as a stainless steel plate is mounted.

As can be seen in Figures 2 to 4, in the multiple sliding seismic isolation apparatus 100 according to the present invention according to this embodiment, the second sliding region 121 is a horizontal direction for dividing the upper guide member 120 from side to side It is formed to be inclined so as to get closer to the center line 115. Accordingly, the second sliding region 121 is divided into left and right on the basis of the horizontal center line 115 in the front-rear direction of the upper guide member 120. The second sliding area 121 has the left and right sides such that the portion of the center line 115 protrudes downward, the lowest in the center line 115 portion, and the height of the surface gradually increases toward the left side and the right side of the center line 115. The left inclined surface 121a and the right inclined surface 121b are formed, respectively. Accordingly, the second sliding region 121 is formed to be inclined so as to become lower gradually closer to the center line 115 at both left and right edges, and the cross section has the lowest shape at the center line 115 portion as shown in FIG. 3. The inclination of the second sliding region 121 is the same as the first sliding region 111 and differs only in the up and down direction. The surface of the second sliding region 121 is preferably vertically symmetric with the surface of the first sliding region 111, and there is no change in the height of the surface in the front-rear direction parallel to the center line 115.

As described above, the second sliding area 121 may be formed as an inclined surface inclined left and right, so that the first sliding bearing 130a is moved to the right or the left while the upper guide member 120 is moved to the right or the left by an external force such as an earthquake. When the two sliding bearings 130b are dragged to the left side, the second sliding bearing 130b or the first sliding bearing 130a on the opposite side is caught by the first guide part 113 and stopped in place, so that the first sliding bearing 130a Even if the height of the) and the height of the second sliding bearing (130b) is different from each other, the upper guide member 120 is to maintain the horizontal. This is explained in more detail later.

When the upper guide member 120 moves in the front-rear direction, the second guide part 123 of the portion disposed to face the upper guide member 120 and gradually narrowed in the front-rear direction is the first sliding bearing 130a. ) And one side of the second sliding bearing 130b, respectively, in the front-rear direction and in the left-right direction.

The multiple sliding seismic isolator 100 according to the present invention includes a first sliding bearing 130a and a second sliding bearing 130b.

The lower surface of the first sliding bearing 130a is in sliding contact with one side of the left inclined surface 111a of the first sliding region 111, and the upper surface is in sliding contact with one side of the left inclined surface 121a of the second sliding region 121. It is. The first sliding bearing 130a is installed between the lower guide member 110 and the upper guide member 120 to share and support the load of the upper structure 20 which is transmitted through the upper guide member 120.

The lower surface of the second sliding bearing 130b is in sliding contact with one side of the right inclined surface 111b of the first sliding region 111, and the upper surface is in sliding contact with the right inclined surface 121b of the second sliding region 121. It is. The second sliding bearing 130b is installed between the lower guide member 110 and the upper guide member 120 to share and support the load of the upper structure 20 which is transmitted through the upper guide member 120. .

As can be seen in FIGS. 2 and 4, the first sliding bearing 130a and the second sliding bearing 130b include a lower slide member 132 having a lower surface supported on the first sliding region 111. The lower slide member 132 is provided with a sliding member SM2 made of a plastic friction material having a small coefficient of friction, such as PTFE, UPE, or nylon, on the lower surface and the outer side surface. The sliding member SM1 made of stainless steel plate and the like, and the sliding member SM2 made of plastic friction material having a small coefficient of friction such as PTFE, UPE, or Nylon may be installed by changing their positions. The same is true for the sliding members described later. The lower surface of the lower slide member 132 is formed to be inclined at the same slope as the corresponding inclined surface of the first sliding region 111.

The pin 133 is provided at the center of the upper surface of the lower slide member 132. The pin 133 is provided to protrude upward from the upper surface of the lower slide member 132.

In addition, the first sliding bearing 130a and the second sliding bearing 130b respectively include an upper slide member 134 having an upper surface in surface contact with the second sliding region 121. The upper surface of the upper slide member 134 is also formed to be inclined at the same inclination as in the first sliding region 111, which is preferably supported, and has a small coefficient of friction such as PTFE, UPE, Nylon, etc. on the upper and outer sides thereof. A sliding member SM2 made of a friction material is provided. The bottom of the upper slide member 134 is formed with a groove 135 into which the end of the pin 133 is inserted. The groove 135 has a pin 133 is inserted so that the upper structure 20 can be rotated up and down within a predetermined angle range, that is, the supported upper structure 20 can be inclined to one side It is formed slightly larger than the outer diameter of 133, and the depth is formed deeper than the length of the pin 133 inserted in consideration of the vertical stretching of the elastic pad 136.

Accordingly, the pin 133 may limit the horizontal displacement of the upper slide member 134 with respect to the lower slide member 132 and allow vertical rotation.

An elastic pad 136 is mounted between the lower slide member 132 and the upper slide member 134. The elastic pad 136 is formed with a through hole through which the pin 133 passes. The elastic pad 136 serves to cushion the vertical impact acting between the support structure 10 and the upper structure 20 and to allow the upper structure 20 to be inclined to one side and also provide a restoring force. . As the elastic pad, a polyurethane pad is suitable.

The first sliding bearing 130a and the second sliding bearing 130b as described above have one left side based on the horizontal center line 115 that divides the lower guide member 110 or the upper guide member 120 from side to side. It is placed in the area and the other one in the right area.

In the above description, the lower guide member 110 and the upper guide member 120 is installed on the support structure and the upper structure through welding, foundation bolts and nuts or foundation nuts and bolts, which is a well known general technology, It doesn't explain in detail.

5 is a cross-sectional view showing a state in which the upper guide member is moved to the right side of the multiple sliding seismic isolator shown in FIG. 1, FIG. 6 is a plan view showing a state in which the upper guide member is moved to the right, and FIG. It is sectional drawing which showed the state moved to the left.

As shown in FIGS. 5 and 6, when the upper guide member 120 moves to the right, the first sliding bearing 130a is caught to the right by the upper guide member 120 while being caught by the second guide part 123 on the left side. Attracted. As the first sliding bearing 130a moves to the right, the height of the first sliding bearing 130a rises along the left inclined surface 111a of the first sliding region 111.

On the other hand, since the second sliding bearing 130b is hung on the right first guide portion 113, even if the upper guide member 120 is moved to the right, the second sliding bearing 130b does not move to the right, but in its place. It will stop. Accordingly, the first sliding bearing 130a is higher than the second sliding bearing 130b. However, since the right inclined surface 121b of the upper guide member 120 moves to the right on the inclined upper surface of the second sliding bearing 130b, the upper guide member 120 can still maintain the horizontal state. To this end, the inclination of the left inclined surface 111a of the first sliding region 111 and the right inclined surface 121b of the second sliding region 121 should be the same. When the upper guide member 120 does not need to maintain a horizontal state, the inclination of the left inclined surface 111a of the first sliding region 111 and the right inclined surface 121b of the second sliding region 121 may vary. There will be. The same applies to the right inclined surface 111b of the first sliding region 111 and the left inclined surface 121a of the second sliding region 121.

In addition, when the upper guide member 120 does not need to have the same height that is raised per unit length when moving to the left and to the right, the left inclined surface 111a and the second sliding area ( The inclination of the right inclined surface 121b of 121 and the inclination of the right inclined surface 111b of the first sliding region 111 and the left inclined surface 121a of the second sliding region 121 may be different from each other.

That is, in the present invention, the left inclined surface 111a of the first sliding region 111, the right inclined surface 121b of the second sliding region 121, the right inclined surface 111b and the second sliding of the first sliding region 111. It is preferable that all of the left inclined surfaces 121a of the regions 121 have the same inclination but not necessarily the same.

When the external force is removed in the state of FIG. 5, since the upper guide member 120 receives the load of the upper structure, the upper guide member 120 moves to the left on the upper inclined surface of the second sliding bearing 130b, and the first sliding bearing 130a is The left inclined surface 111a of the first sliding region 111 is moved to the left side. That is, the multiple sliding seismic isolator 100 according to the present invention can return to the initial position without the horizontal elastic body by gravity acting on the upper structure.

When the upper guide member 120 moves to the left as shown in FIG. 7, the first sliding bearing 130a is caught by the first guide portion 113 on the left side and stopped in place and the second sliding bearing 130b is provided. As shown in FIG. 7, the second guide portion 123 is caught by the left side and is pulled to the left to climb up the right inclined surface 111b of the first sliding region 111. The process of moving the upper guide member 120 to the left and then returning is the same as the reverse direction of the process of moving the upper guide member 120 to the right and then returning.

The inclination of the left and right or front and rear of the upper guide member 120 as the upper structure rotates up and down is received by the elastic pad 136.

8 is a plan view illustrating a state in which the upper guide member of the multiple sliding seismic isolator shown in FIG. 1 is moved rearward.

When the upper guide member 120 moves backwards as indicated by the arrows in FIG. 8, the upper slide member 134 of the first sliding bearing 130a and the upper slide member 134 of the second sliding bearing 130b. The first guide disposed to face each other in front of the upper guide member 120 and the one side is pressed toward the rear by the second guide portion 123 disposed to be narrower gradually narrower facing each other in front of the front guide member 120 The rear wall is moved on the inner wall of the part 113. Accordingly, the height of the first sliding bearing 130a and the second sliding bearing 130b is gradually increased while the distance between the first sliding bearing 130a and the second sliding bearing 130b is narrower.

When the external force is removed after the above process, the first sliding bearing 130a and the second sliding bearing 130b return to the initial position on the inclined surface of the first sliding region 111 by the load of the upper structure. do. During the return, the first sliding bearing 130a and the second sliding bearing 130b receive a force in a direction in which the gap between the first and second sliding bearings 130b becomes wider, and the force acts on the rear second guide part 123 so that the upper guide member 120 ) Can also return to the initial position. Of course, at this time, since the left inclined surface 121a and the right inclined surface 121b of the second sliding region 121 are also inclined in the direction in which the second guide portion 123 is disposed, the upper guide member 120 may return. To help.

The process of returning to the initial position after moving the upper guide member 120 forward (opposite direction of the arrow) is the same as the process of returning to the initial position after moving backward only in the opposite direction.

9 is a plan view showing a state in which the upper guide member of the multiple sliding seismic isolator shown in FIG.

When the upper guide member 120 moves to the left rear indicated by an arrow as shown in FIG. 9, the first sliding bearing 130a is left inclined surface 121a of the second sliding area 121 as shown in FIG. 7. By the force of the arrow in the direction of the arrow to the rear rear side first guide portion 113 to move backward, the second sliding bearing (130b) in the direction of the arrow by the second guide portion 123 of the front right side Under the force, the right inclined plane 111b moves to the left rear. At this time, the second sliding bearing 130b is disposed closer to the center line 115 than the first sliding bearing 130a and is disposed at a position higher than the first sliding bearing 130a. However, since the first sliding bearing 130a supports a thicker portion of the upper guide member 120 than the second sliding bearing 130b, the upper guide member 120 may maintain a horizontal state.

After the external process is removed after the above process, the first sliding bearing 130a and the second sliding bearing 130b are left inclined surface 111a and right inclined surface of the first sliding region 111 by the load of the upper structure. The vehicle 111 is moved forward by the 111b to return to the initial position. During the return, the first sliding bearing 130a and the second sliding bearing 130b receive a force in a direction in which the gap between the first and second sliding bearings 130b becomes wider, and the force acts on the second guide part 123 on the front right side so that the upper guide member 120 may also return to the initial position. At this time, the left inclined surface 121a and the right inclined surface 121b of the second sliding region 121 also help the upper guide member 120 return to the initial position as described with reference to FIG. 8.

The process of returning to the initial position after the upper guide member 120 moves in the opposite direction to the arrow in FIG. 9 is the same as the process of returning to the initial position after moving in the direction of the arrow in FIG.

10 is a plan view for explaining another embodiment of the lower guide member and the upper guide member.

Referring to FIG. 6 with reference to FIG. 6, it is as follows. As shown in FIG. 10, in some cases, the first guide part 113 of the lower guide member 110 may move the first sliding bearing 130a and the second sliding bearing 130b only in one direction to the left and right. It is possible to implement a multiple sliding seismic isolator according to the present invention by installing in parallel with a space forward and backward so that. Accordingly, the first sliding bearing 130a and the second sliding bearing 130b may move only in the left and right directions with respect to the lower guide member 110.

In this case, the second guide part 123 of the upper guide member 120 may be formed in the same manner as described with reference to FIGS. 1 to 4. Even in this case, the upper guide member 120 may move relative to the lower guide member 110 in the horizontal direction in the front, rear, left, and right directions, and the size of the allowable displacement in the front and rear directions is reduced.

In some cases, the second guide part 123 of the upper guide member 120 may also be installed in parallel with the front guide member 110 at the front and rear similarly as in the lower guide member 110, so that the upper guide member 120 may have the first sliding bearing 130a. ) And the second sliding bearing 130b may be moved only in one direction of left and right.

In some cases, only the second guide part 123 of the upper guide member 120 is installed parallel to each other at intervals back and forth to move only in the left and right directions of the first sliding bearing 130a and the second sliding bearing 130b. The first guide portion 113 of the lower guide member 110 may be installed as described in FIGS. 1 to 4 to implement a multiple sliding seismic isolator according to the present invention.

In some cases, one or both of the first guide portion 113 and the second guide portion 123 may be disposed in parallel and in the front-rear direction at intervals to the left and right to form the first sliding bearing 130a and the first sliding portion 130a and the first sliding portion 130a. Multiple sliding seismic isolation device according to the present invention may be implemented by allowing the two sliding bearings 130b to move only in one direction before and after.

The rest is as described with reference to FIGS. 1 to 4.

11 is a cross-sectional view showing another embodiment of the multiple sliding seismic isolator according to the present invention, and FIG. 12 is a plan view of a state in which the upper guide member is removed from the multiple sliding seismic isolator shown in FIG.

In some cases, both the first sliding region 111 and the second sliding region 121 are formed in a horizontally arranged plane, and a horizontal elastic mechanism is formed between the first sliding bearing 130a and the second sliding bearing 130b. By installing the 140 may implement a multi-slide isolation device 100 according to the present invention.

Here, one of the first sliding bearing 130a and the second sliding bearing 130b is based on the horizontal center line 115 that divides the lower guide member 110 or the upper guide member 120 from side to side. It is placed in the area and the other one in the right area. Axial holes 137 are formed in the horizontal direction at corresponding positions of the upper slide member 134 facing the first sliding bearing 130a and the second sliding bearing 130b, respectively. Between the first sliding bearing 130a and the second sliding bearing 130b, shaft members 142 inserted in the two shaft holes 137 opposite to each other are provided. The outer circumferential surface of the shaft member 142 is provided with an elastic body 144 elastically supporting between the first sliding bearing (130a) and the second sliding bearing (130b). Two opposite shaft holes 137 are sufficient to prevent the shaft member 142 from hindering their movement or falling out of the shaft hole 137 even if the first sliding bearing 130a and the second sliding bearing 130b are close to or far from each other. It is formed with a margin.

11 and 12, the first sliding region 111 and the second sliding region 121 are formed in a horizontal plane so that the height of the first sliding bearing 130a and the second sliding bearing 130b may be increased even if the first sliding region 111 and the second sliding bearing 130b move. There is a difference in that no change occurs and the restoring force is provided by the elastic body 144 to return to the initial position when the external force is removed after the upper guide member 120 is moved horizontally such as left and right or before and after. Is the same as described with reference to FIGS.

FIG. 13 is a cross-sectional view illustrating a modified example of the multiple sliding seismic isolator shown in FIGS. 1 to 4.

In some cases, when the restoring force of the upper guide member 120 is to be increased, between the first sliding bearing 130a and the second sliding bearing 130b of the multiple sliding seismic isolation device 100 described with reference to FIGS. 1 to 4. The horizontal elastic mechanism 140 may be further installed to implement the multiple sliding seismic isolator 100 according to the present invention.

The lower guide member 110 is fixed by coupling a bolt 14 or a nut to the foundation nut 12 or the foundation bolt, which is usually fixed to the supporting structure 10, and the upper guide member 120 is a steel beam of the bottom of the upper structure. It is fixed to the back by welding or the like. In this case, the lower guide member 110 should be formed with a fastening hole for fastening the bolt (14). Fixing the lower guide member 110 and the upper guide member 120 to the support structure 10 and the upper structure 20 can be used a variety of methods known in the art, which is well known in the art It doesn't explain in detail.

The rest is as described with reference to FIGS. 1 to 4.

14 is a cross-sectional view showing another embodiment of a multiple sliding seismic isolator according to the present invention.

In some cases, the first sliding bearing 130a and the second sliding bearing 130b may be configured of the rotation allowing member 138 and the groove member 139 without an elastic pad.

Here, the rotation allowable member 138 is mounted on the lower surface of the sliding member SM2 in contact with the first sliding region 111, and the upper surface forms a convex spherical or cylindrical surface.

The groove member 139 has a rotation allowable groove 139a to which a spherical surface or a cylindrical surface is coupled to a lower surface thereof, and an upper surface thereof includes a second sliding region 121 of the first sliding region 111 and the second sliding region 121. Is in contact with

The rotation allowable member 138 and the groove member 139 as described above may be installed upside down.

The rest is as described with reference to FIGS. 1 to 4.

The multiple sliding seismic isolator 100 as shown in FIG. 14 is different from the multiple sliding seismic isolator described in FIGS. 1 to 4 in terms of supporting the load of the upper structure without an elastic pad, and the upper guide member 120 is moved forward or backward. The process of returning to the initial position after moving left and right is the same as described with reference to FIGS. 1 to 4.

15 is a cross-sectional view showing another embodiment of the multiple sliding seismic isolator according to the present invention.

When it is not necessary to receive the inclination of the upper structure, the first sliding bearing 130a and the second sliding bearing 130b may be integrally formed as one block without an elastic pad or a rotation permitting member as shown in FIG. 15. have. The rest is the same as described with reference to FIGS.

16 to 18 are cross-sectional views each showing another embodiment of the multiple sliding seismic isolator according to the present invention.

When the upper guide member 120 does not need to receive the inclination of the upper structure to be fixed, does not need to provide restoring force to the upper structure, and only need to allow the horizontal displacement while supporting the load of the upper structure As shown in FIG. 16, both the first sliding region 111 and the second sliding region 121 are formed horizontally, and a horizontal elastic mechanism is formed between the first sliding bearing 130a and the second sliding bearing 130b. The first sliding bearing 130a and the second sliding bearing 130b may be integrally formed in one block without installation, and thus, the multi-slid seismic isolation device according to the present invention may be configured.

The embodiment shown in FIG. 16 may further include one, two or more third sliding bearings 130c, such as the first sliding bearing 130a. In this case, the first guide part 113 and the second guide part 123 of the upper guide member 120 and the lower guide member 110 may be formed along other paths such as a quadrangle.

When the horizontal restoring force is required for the upper guide member 120, as shown in FIG. 17, between the first sliding bearing 130a and the second sliding bearing 130b or between two third sliding bearings 130c facing each other. Horizontal elastic mechanism 140 may be further installed on the.

When the inclination of the upper guide member 120 is required, the first sliding bearing 130a, the second sliding bearing 130b, and the third sliding bearing 130c are illustrated in FIG. One made in the form as shown may be used.

19 is a plan view for explaining a modification of the multiple sliding seismic isolator shown in FIGS.

In some cases, the first guide part 113 installed on the lower guide member 110 may be installed along a circular or elliptical shape. In this case, the outer surfaces of the first sliding bearing 130a and the second sliding bearing 130b may be formed to be curved to the same extent as the first guide part 113. The second guide part installed on the upper guide member may also be disposed along a circular or elliptical shape.

In addition, the first guide portion and the second guide portion may be disposed along a path of a curve other than circular or elliptical, which is also included in the present invention.

The first guide part 113 and the second guide part are preferably arranged in the same size and shape, but are not necessarily the first guide part 113 and the second guide part having different sizes or along different paths. Can be deployed.

The rest is as described with reference to FIGS. 1 to 4.

20 is a plan view illustrating another modified example of the multiple sliding seismic isolator shown in FIGS. 1 to 4.

In some cases, the first sliding bearing 130a and the second sliding bearing 130b may be made circular as shown in FIG. 20.

In some cases, the first sliding bearing 130a and the second sliding bearing 130b may be elliptical or other planar shapes, not circular.

The rest is the same as described in FIG.

FIG. 21 is a cross-sectional view for illustrating another modified example of the multiple sliding seismic isolator shown in FIGS. 1 to 4.

In some cases, the first sliding region 111 and the second sliding region 121 may be formed as convex curved surfaces having symmetry. In this case, the sliding members SM1 and SM2 should also be formed in a curved surface. In addition, the first sliding bearing 130a and the second sliding bearing 130b may be replaced with spherical bearings.

The rest is the same as described in FIGS.

The present invention can be used to make a structure support device that absorbs and absorbs the force or impact force acting in the horizontal direction between the support structure and the superstructure while supporting the load of the superstructure on the support structure.

100: multiple sliding seismic isolator 110: lower guide member
111: first sliding area 111a, 121a: left inclined plane
111b and 121b: right inclined surface 113: first guide part
120: upper guide member 121: second sliding area
123: second guide portion 130a: first sliding bearing
130b: second sliding bearing 130c: third sliding bearing
132: lower slide member 133: pin
134: upper slide member 135: groove
136: elastic pad 137: shaft hole
138: rotation allowable member 139: groove member
140: horizontal elastic mechanism 142: shaft member
144: elastomer

Claims (11)

In the sliding seismic isolator which is installed on the support structure to support the load of the upper structure while allowing the horizontal displacement of the support structure and the upper structure at all times and buffer and absorb the impact force acting in the horizontal direction during the earthquake. ,
A lower guide member having a first sliding area and protruding upward along a circumference of the first sliding area and installed on the support structure;
An upper guide member having a second sliding area and protruding downwardly along a circumference of the second sliding area and installed on a bottom surface of the upper structure;
A lower surface is slidably surface-contacted to one side of the first sliding region and an upper surface is installed between the lower guide member and the upper guide member in a state of slidable surface-contacting one side of the second sliding region. A first sliding bearing for sharing and supporting the load of the superstructure which is transmitted through; And
A lower surface is slidably surface-contacted to the other side of the first sliding region and an upper surface is installed between the lower guide member and the upper guide member in a state of slidable surface-contacting the other side of the second sliding region. And a second sliding bearing for sharing and supporting the load of the superstructure which is transmitted through. According to claim 1, wherein the first sliding bearing and the second sliding bearing is a lower slide member having a lower surface supported in the first sliding region, an upper slide member having an upper surface in surface contact with the second sliding region, the lower slide One end is fixed to any one of the lower slide member and the upper slide member and the other end penetrates through the elastic pad and the elastic pad provided between the member and the upper slide member, and the other end is connected to the other of the lower slide member and the upper slide member. Is inserted into the groove formed multiple sliding seismic isolation device characterized in that it comprises a pin that limits the horizontal displacement of the upper slide member with respect to the lower slide member and allows vertical rotation. According to claim 1, The first sliding bearing and the second sliding bearing is mounted on one surface with a sliding member in contact with any one of the first sliding region and the second sliding region, the other surface is a convex spherical or cylindrical surface The rotating allowable member and the rotating allowable groove to which the spherical surface or the cylindrical surface is coupled to one surface and the other surface is provided with a groove member in contact with the other one of the first sliding region and the second sliding region. Multiple sliding isolation device. The method of claim 1, wherein the sliding member is provided on the contact surface of the first sliding bearing, the second sliding bearing, the first sliding region, the second sliding region, the first guide portion and the second guide portion. Sliding seismic isolator. According to any one of claims 1 to 4, wherein the first sliding region is formed to be inclined so as to gradually increase closer to the horizontal center line for dividing the lower guide member to the left and right, the second sliding region is the upper portion The first sliding bearing and the second sliding bearing are formed to be inclined toward the horizontal center line dividing the guide member to the left and right, and the first sliding bearing and the second guide are based on the horizontal center line dividing the lower guide member or the upper guide member to the left and right. Multiple sliding seismic isolator, characterized in that one of the sliding bearing is disposed in the left region and the other is located in the right region. The method of claim 5, wherein the first guide portion and the second guide portion has a portion in which the facing portion is gradually narrower toward the front from the front-rear direction center and the portion facing toward the rear is gradually narrower Multiple sliding seismic isolator, characterized in that. According to claim 5, One of the first guide portion and the second guide portion is arranged in the portion facing each other toward the front toward the front toward the front and rear toward the central portion in the narrow direction and the portion facing toward the rear toward the narrower And a first one of the first guide part and the second guide part has a part disposed in parallel so that the first sliding bearing and the second sliding bearing move only in one direction of the front, rear, left, and right sides. Multiple sliding seismic isolator, characterized in that. According to claim 5, Axial holes are formed in the horizontal direction at the position facing the first sliding bearing and the second sliding bearing, respectively, and the two opposite ends between the first sliding bearing and the second sliding bearing The shaft member is inserted into each of the shaft hole, the elastic member for elastically supporting between the first sliding bearing and the second sliding bearing on the outer peripheral surface of the shaft member between the first sliding bearing and the second sliding bearing Is installed,
The shaft hole is a multiple sliding seismic isolation device, characterized in that formed to a length that allows the first sliding bearing and the second sliding bearing to be close to or away from each other without being disturbed by the shaft member. According to any one of claims 1 to 4, wherein the first sliding region and the second sliding region are each made of a plane arranged horizontally,
One of the first sliding bearing and the second sliding bearing is disposed in the left region and the other is disposed in the right region, based on a horizontal center line that divides the lower guide member or the upper guide member from side to side. Sliding seismic isolator. 10. The method of claim 9, wherein the axial hole is formed in the horizontal direction at the position facing the first sliding bearing and the second sliding bearing, respectively, and two opposite ends between the first sliding bearing and the second sliding bearing A shaft member inserted into each of the shaft holes is provided, and an elastic body for elastically supporting the first sliding bearing and the second sliding bearing is formed on an outer circumferential surface of the shaft member between the first sliding bearing and the second sliding bearing. Installed,
The shaft hole is a multiple sliding seismic isolation device, characterized in that formed to a length that allows the first sliding bearing and the second sliding bearing to be close to or away from each other without being disturbed by the shaft member. The lower guide member according to any one of claims 1 to 4, wherein a lower surface of the lower guide member is in sliding contact with a portion of the first sliding region and an upper surface of the lower sliding member is in sliding contact with a portion of the second sliding region. And one or more third sliding bearings installed between the upper guide member to share and support the load of the upper structure which is transmitted through the upper guide member.

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