Anti-pulling vibration double-control rubber isolation support

Abstract

The utility model discloses an anti-pulling vibration double-control rubber shock insulation support, which belongs to the technical field of building structure shock insulation and comprises an upper connecting plate, a lower connecting plate, a shock insulation support body and a plurality of flexible prestressed cables. The shock insulation support body is arranged between the upper connecting plate and the lower connecting plate; a through hole extending in the axial direction of the shock insulation support body is formed in the center of the shock insulation support body. The shock insulation support body comprises first annular steel plates and second annular steel plates which are alternately arranged, and a rubber layer is filled between the first annular steel plates and the second annular steel plates; the outer diameters of the first annular steel plate and the second annular steel plate are the same, and the inner diameter of the first annular steel plate is smaller than that of the second annular steel plate; and the plurality of flexible prestressed cables are respectively connected with the upper connecting plate and the lower connecting plate. The shock insulation support provided by the utility model has reliable shock insulation capability and pulling resistance capability, can effectively limit the displacement of a building body in the horizontal displacement direction under the action of a horizontal earthquake, and has vertical shock insulation capability at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building structure shock insulation, specifically relates to a kind of anti-pulling vibration double-control rubber shock insulation support. BACKGROUND

[0002] Earthquake frequently to the safety and stability of building constitutes serious threat.Especially vertical earthquake action, its destructive power to building cannot be underestimated.Multiple earthquake examples show that vertical seismic wave often leads to building structure damage seriously, even collapse.In traditional seismic measures, lead rubber shock insulation support is widely used due to its good horizontal shock insulation performance.However, the performance of this support under vertical earthquake action is not ideal, and it cannot effectively reduce the damage of vertical earthquake to building.

[0003] In order to cope with the challenge of vertical earthquake, three-dimensional shock insulation support technology has been developed at present.This kind of support combines different performance supports through series and parallel connection, aiming to play the advantages of each support in different directions and realize omnidirectional shock insulation.Although these combined supports improve the shock insulation effect to some extent, they often have stress concentration problems at the connection, which may lead to damage of the support under earthquake, thereby affecting its overall performance.In addition, the complex structure of the new support not only increases the production difficulty, but also increases the manufacturing cost, which is not conducive to popularization and application.

[0004] On the other hand, with the rapid development of urban rail transit, the vertical vibration influence of rail transit operation on adjacent buildings is also increasingly significant.This vibration not only affects the use comfort of building, but also may pose potential threat to the structural safety of building.Therefore, how to effectively control and reduce the vibration influence brought by rail transit has become a problem to be solved in the current field of seismic and vibration reduction. UTILITY MODEL CONTENT

[0005] In view of the problems existing in the prior art, the utility model provides a kind of anti-pulling vibration double-control rubber shock insulation support, and intends to solve the damage of vertical component of earthquake to building and the comfort problem brought by vertical vibration of building caused by rail transit operation.To achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides an anti -pulling and anti -vibration double -controlled rubber shock insulation support, including upper connecting plate, lower connecting plate, shock insulation support body and a plurality of flexible prestressed cable, the shock insulation support body is located between the upper connecting plate and lower connecting plate, the center of shock insulation support body is equipped with the through -hole along its axial extension, the shock insulation support body includes the first annular steel sheet and the second annular steel sheet of alternately arranged, and the first annular steel sheet and the second annular steel sheet are filled with rubber layer, the outer diameter of first annular steel sheet and second annular steel sheet is same, and the inner diameter of first annular steel sheet is less than the inner diameter of second annular steel sheet, and a plurality of flexible prestressed cable is connected the upper connecting plate and lower connecting plate respectively.

[0007] Further, the upper and lower ends of the shock insulation support body are respectively provided with upper and lower end plates.

[0008] Further, the upper connecting plate is provided with a plurality of first holes, and the lower connecting plate is provided with a plurality of second holes corresponding to the first holes; the flexible prestressed cable passes through the first and second holes to connect the upper and lower connecting plates.

[0009] Further, the lower end of the flexible prestressed cable is provided with a fixed anchor, and the upper end is provided with a tension anchor for freely controlling the length of the flexible prestressed cable; the flexible prestressed cable is fixedly connected to the upper and lower connecting plates through the fixed anchor and the tension anchor.

[0010] Further, a plurality of groups of reserved holes are further provided on the upper and lower connecting plates.

[0011] Further, the first annular steel plate, the second annular steel plate and the rubber layer are connected and fixed by a vulcanization process.

[0012] Further, the through hole is provided with an energy-consuming substance.

[0013] Further, the upper and lower connecting plates, the upper and lower end plates are steel plates.

[0014] The utility model has the advantages that:

[0015] The anti-pulling and anti-vibration double-controlled rubber shock insulation support has reliable shock insulation capacity and anti-pulling capacity, can effectively limit the horizontal displacement of the building body when subjected to horizontal seismic action, has excellent vertical vibration isolation performance, reduces the influence of vertical earthquake and rail transit vibration on the building, solves the damage of the vertical component of seismic action on the building and the comfort problem caused by the vertical vibration of the building due to rail transit operation. At the same time, the shock insulation support has superior performance, reasonable structure and is easy to produce. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1It is the vertical section schematic view of the anti-pulling and anti-vibration double-control rubber shock insulation support provided by the utility model;

[0017] Figure 2 It is the first annular steel plate schematic view of the anti-pulling and anti-vibration double-control rubber shock insulation support provided by the utility model;

[0018] Figure 3 It is the second annular steel plate schematic view of the anti-pulling and anti-vibration double-control rubber shock insulation support provided by the utility model;

[0019] Figure 4 It is the top view of the upper connecting plate of the anti-pulling and anti-vibration double-control rubber shock insulation support provided by the utility model;

[0020] In the drawing, 1 is an upper connecting plate, 2 is a lower connecting plate, 3 is a flexible prestressed cable, 4 is a through hole, 5 is a first annular steel plate, 6 is a second annular steel plate, 7 is a rubber layer, 8 is an upper sealing plate, 9 is a lower sealing plate, 10 is a fixed anchorage device, and 11 is a tensioning anchorage device. Specific implementation

[0021] The utility model is further explained in detail below in combination with the drawings and specific implementation, but the utility model is not limited to the following examples.

[0022] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to a particular orientation, structure and operation, and therefore cannot be understood as limiting the utility model.

[0023] In the description of the utility model, "first feature" and "second feature" can include one or more features.

[0024] In the description of the utility model, "multiple" means two or more.

[0025] In the description of the utility model, "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0026] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] Example 1:

[0029] See attached Figures 1-2 This embodiment discloses a dual-control rubber seismic isolation bearing for resisting pull-out vibration, such as... Figure 1 As shown, the bearing includes an upper connecting plate 1, a lower connecting plate 2, a seismic isolation bearing body, and multiple flexible prestressed cables 3. The seismic isolation bearing body is vertically disposed between the upper connecting plate 1 and the lower connecting plate 2, and the multiple flexible prestressed cables 3 are vertically connected to the upper connecting plate 1 and the lower connecting plate 2, respectively. In this application, the axial direction of the seismic isolation bearing body is defined as the vertical direction.

[0030] Specifically, the structure of the seismic isolation bearing body is as follows: The center of the seismic isolation bearing body has a through hole 4 extending along its axial direction, and energy-dissipating materials such as lead cores can be placed in the through hole 4; the seismic isolation bearing body includes alternating first annular steel plates 5 and second annular steel plates 6, with a rubber layer 7 filling the space between the first annular steel plates 5 and the second annular steel plates 6; the first annular steel plates 5, the second annular steel plates 6, and the rubber layer 7 can be connected and fixed through a vulcanization process. The first annular steel plate 5 and the second annular steel plate 6 can be circular annular steel plates, with the structure as follows: Figure 2 and Figure 3 As shown, the first annular steel plate 5 and the second annular steel plate 6 have the same outer diameter, and the inner diameter of the first annular steel plate 5 is smaller than the inner diameter of the second annular steel plate 6. In this application, the seismic isolation bearing body is composed of the first annular steel plate 5 and the second annular steel plate 6 alternately bonded to the rubber layer 7. The outer ring layer can be regarded as a common laminated rubber bearing, and the inner ring layer can be regarded as a thick laminated rubber bearing. This structure can effectively reduce the vertical stiffness of the seismic isolation bearing while ensuring its vertical load-bearing capacity. The increase in the thickness of the inner rubber layer 7 also reduces the vertical stiffness of the seismic isolation bearing, giving it a good ability to weaken earthquakes and non-seismic vibrations such as wind loads and mechanical vibrations experienced by the structure during normal use.

[0031] The inner diameter of the second annular steel plate 6 can be adjusted according to the required vertical stiffness. The isolation bearing body is formed by alternately stacking the first annular steel plate 5 and the second annular steel plate 6, and the vertical stiffness thereof is lower than that of a common laminated rubber bearing, but the reduction of the vertical stiffness will affect the bearing capacity, so the inner diameter of the second annular steel plate 6 can be adjusted according to the required vertical stiffness, so that the upper load can be supported while the vertical damping performance is ensured.

[0032] In the present application, the upper connecting plate 1 and the lower connecting plate 2 are vertically connected by the flexible prestressed cable 3. Before the isolation bearing works, a pre-compression stress can be applied to vertically compress the isolation bearing, and after bearing the vertical load, the flexible prestressed cable 3 relaxes due to unloading. The flexible prestressed cable 3 after unloading can also be used as a horizontal displacement limiting device. After the isolation bearing enters the working state, as long as the flexible prestressed cable 3 does not reach the straightened state, the flexible prestressed cable 3 does not participate in the work, and the equivalent horizontal stiffness of the isolation bearing will not be affected during this period. When the uplift resistance of the isolation bearing is greater than the design value, the flexible prestressed cable 3 enters the working state and provides the uplift resistance.

[0033] The isolation bearing provided by the present application produces energy dissipation effect when the horizontal displacement reaches the threshold value by setting the flexible prestressed cable 3, and also has the effect of resisting pull-out. Through this structure, the common advantages of the common laminated rubber bearing and the thick-layer rubber bearing are realized, and the shortcomings of the two are also compensated. Compared with the three-dimensional isolation bearing on the market, the economic cost is significantly reduced, and good economic benefits are achieved.

[0034] Embodiment two:

[0035] See the accompanying Figures 1-2 On the basis of embodiment one, in an embodiment of the present application, the upper and lower ends of the isolation bearing body are further respectively provided with an upper sealing plate 8 and a lower sealing plate 9. The upper connecting plate 1, the lower connecting plate 2, the upper sealing plate 8 and the lower sealing plate 9 can all be steel plate materials.

[0036] In an embodiment of the present application, the specific form of vertically connecting the upper connecting plate 1 and the lower connecting plate 2 by the flexible prestressed cable 3 is that a plurality of first holes can be arranged on the circumference of the upper connecting plate 1, a plurality of second holes corresponding to the first holes are arranged on the lower connecting plate 2, and the flexible prestressed cable 3 passes through the first holes and the second holes to connect the upper connecting plate 1 and the lower connecting plate 2. The number of the first holes and the second holes can correspond to the number of the flexible prestressed cable 3. The number of the flexible prestressed cable 3 can be adjusted according to the type of the building. Specifically, when connected, the upper end of the flexible prestressed cable 3 is a tensioning anchor 11, the length of the flexible prestressed cable 3 can be freely controlled, the lower end is a fixed anchor 10, and the flexible prestressed cable 3 is fixedly connected to the upper connecting plate 1 and the lower connecting plate 2 through the fixed anchor 10 and the tensioning anchor 11.

[0037] In one embodiment of the present application, a plurality of groups of reserved holes are further arranged on the upper connecting plate 1 and the lower connecting plate 2 respectively. Through the arrangement of the plurality of groups of reserved holes, the flexible prestressed cable 3 can be quickly replaced, disassembled and installed, so that the post-earthquake repair is faster.

[0038] The seismic isolation support has reliable seismic isolation capacity and anti-pulling capacity, can effectively limit the displacement of the building body in the horizontal displacement direction when subjected to horizontal seismic action, and has vertical vibration isolation capacity at the same time.

[0039] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A dual-control rubber seismic isolation bearing for resisting pull-out vibration, characterized in that: The isolation bearing comprises an upper connecting plate (1), a lower connecting plate (2), an isolation bearing body and a plurality of flexible prestressed cables (3); the isolation bearing body is arranged between the upper connecting plate (1) and the lower connecting plate (2); the isolation bearing body is provided with a through hole (4) extending along the axial direction thereof; the isolation bearing body comprises first annular steel plates (5) and second annular steel plates (6) arranged alternately, and a rubber layer (7) is filled between the first annular steel plates (5) and the second annular steel plates (6); the outer diameters of the first annular steel plates (5) and the second annular steel plates (6) are the same, and the inner diameter of the first annular steel plates (5) is smaller than the inner diameter of the second annular steel plates (6); the plurality of flexible prestressed cables (3) are connected to the upper connecting plate (1) and the lower connecting plate (2) respectively.

2. The dual-control rubber isolation bearing according to claim 1, wherein: Upper and lower ends of the isolation bearing body are respectively provided with upper and lower sealing plates (8) and (9).

3. The dual-control rubber isolation bearing according to claim 1, wherein: The upper connecting plate (1) is provided with a plurality of first holes, and the lower connecting plate (2) is provided with a plurality of second holes corresponding to the first holes one by one; the flexible prestressed cables (3) pass through the first holes and the second holes to connect the upper connecting plate (1) and the lower connecting plate (2).

4. The dual-control rubber seismic isolation bearing according to claim 3, wherein: Lower ends of the flexible prestressed cables (3) are provided with fixed anchorage devices (10), and upper ends thereof are provided with tensioning anchorage devices (11) for freely controlling the lengths of the flexible prestressed cables (3); the flexible prestressed cables (3) are fixedly connected to the upper connecting plate (1) and the lower connecting plate (2) through the fixed anchorage devices (10) and the tensioning anchorage devices (11) respectively.

5. The dual-control rubber seismic isolation bearing according to claim 3, wherein: The upper connecting plate (1) and the lower connecting plate (2) are further respectively provided with a plurality of groups of reserved holes.

6. The dual-control rubber seismic isolation bearing according to claim 1, wherein: The first annular steel plates (5), the second annular steel plates (6) and the rubber layer (7) are connected and fixed through a vulcanization process.

7. The dual-control rubber seismic isolation bearing according to claim 1, wherein: The through hole (4) is provided with an energy consumption substance.

8. The dual-control rubber seismic isolation bearing according to claim 2, wherein: The upper connecting plate (1), the lower connecting plate (2), the upper sealing plate (8) and the lower sealing plate (9) are steel plates.

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