WO2020006850A1 - 一种抗拔型三维橡胶摩擦摆隔震支座 - Google Patents

一种抗拔型三维橡胶摩擦摆隔震支座 Download PDF

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WO2020006850A1
WO2020006850A1 PCT/CN2018/103037 CN2018103037W WO2020006850A1 WO 2020006850 A1 WO2020006850 A1 WO 2020006850A1 CN 2018103037 W CN2018103037 W CN 2018103037W WO 2020006850 A1 WO2020006850 A1 WO 2020006850A1
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concave
vibration isolation
pull
rubber
cable
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PCT/CN2018/103037
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English (en)
French (fr)
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郭彤
晏平
徐彦青
徐伟杰
刘杰
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东南大学
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Publication of WO2020006850A1 publication Critical patent/WO2020006850A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings

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  • the invention is a pull-out-resistant three-dimensional rubber friction pendulum vibration isolation support, and is particularly a component suitable for isolation and reinforcement of bridges and building structures.
  • the traditional friction pendulum support realizes the vibration isolation function through friction energy consumption.
  • the traditional friction pendulum although its period, lateral stiffness, damping, displacement capacity, etc. can be independently determined.
  • these parameters are constant values at all levels of ground motion and displacement, which is not conducive to achieving flexible design and multiple performance targets under small, medium and large earthquakes.
  • multiple friction pendulum bearings have been designed abroad.
  • the stability of its mechanical properties needs to be studied.
  • the traditional friction pendulum bearing is stacked by a concave disk and an intermediate bearing, it cannot provide tensile force in the vertical direction, and the mechanical properties are unstable. When horizontal displacement occurs, the overturning phenomenon easily occurs, causing the friction pendulum support to fail, failing to provide the isolation effect, and easily causing huge losses to the support and the isolation structure. At the same time, the traditional friction pendulum support cannot isolate vertical ground vibration, which limits the wide application of the friction pendulum support.
  • the present invention provides a pull-resistant three-dimensional rubber friction pendulum vibration isolation support, which can improve the mechanical properties of the traditional friction pendulum support. It can not only provide multi-stage horizontal isolation capability, but also isolate vertical ground vibration. At the same time, it can provide anti-pulling ability and improve the stability of the support.
  • the pull-out-type three-dimensional rubber friction pendulum vibration isolation support of the present invention comprises two concave disks arranged upside down, a rubber interlayer pad disposed between the two concave disks, and concave disks respectively arranged above.
  • a vertical disc spring is connected, the edge of the vibration isolation disk is engaged with the outer edge of the concave disk, the two concave disks are connected with a first cable between the opposite inner sides, and the two vibration isolation disks are opposite A second cable is connected between the inner sides.
  • the friction sheet is adhered to a rubber interlayer pad.
  • a limiting ring is provided inside the edge of the vibration isolation disk.
  • the concave disk includes a flat plate and a concave surface disposed in the flat plate, and a first cable is provided along the inner edge of the concave surface.
  • the second cable is disposed around the inner edge of the stop ring.
  • the rubber interlayer pad material is high-damping rubber
  • the friction sheet is made of high-molecular polytetrafluoroethylene material.
  • the first cable and the second cable are made of a shape memory alloy.
  • the concave disk may be made of 45 # steel, and the concave sliding surface of the concave disk may be stainless steel.
  • the present invention has the following advantages:
  • the vibration-isolating support of the present invention has a multi-stage anti-pullout force to provide the support with anti-overturning force.
  • the traditional friction pendulum and the rubber bearing are horizontally displaced, because there is no anti-pull device, vertical tension cannot be provided, the bearing is stable, and the bearing is prone to overturn, which results in the failure of the bearing isolation failure and damage to the isolated structure. Therefore, it is necessary to propose a device for providing anti-pulling force in multiple stages.
  • the support is horizontally displaced, on the one hand, the vertical cable can provide vertical tension, and on the other hand, the vertical cable can maintain the stability of the support. Because the present invention has two cables, it can provide the pullout resistance of the support at different stages to resist overturning, and maintain the mechanical stability of the support at different stages of displacement.
  • the seismic isolation support of the present invention has a multi-stage seismic isolation capability.
  • Traditional friction pendulum and rubber bearings because the parameters of the bearings are determined, it is difficult to provide multi-stage seismic isolation.
  • the vibration isolation support of the present invention combines a rubber support and a friction pendulum support. Small vibrations are resisted by an intermediate rubber sandwich pad, and moderate vibrations and large vibrations are resisted by friction pendulums.
  • multi-stage vibration isolation is achieved by designing the stiffness of the rubber bearing and the friction coefficient and curvature of the friction pendulum bearing.
  • the seismic isolation support of the present invention has a three-dimensional seismic isolation capability. Traditional friction pendulum bearings cannot provide vertical isolation. When vertical ground motion occurs, the support and structure will be greatly damaged.
  • the seismic isolation support of the present invention provides a small vertical stiffness through a vertical disc spring, and provides vertical seismic isolation capability to the structure.
  • the vibration-isolating support of the present invention has a strong self-resetting function. Because rubber has the characteristics of strong elasticity, the friction pendulum has curvature, and the cable provides elastic restoring force, so that the displacement of the support can be offset by its own weight and the elastic force generated by the rubber and cable. It has a self-reset function to reduce structural loss and earthquakes. Rebuilding costs.
  • the seismic isolation support of the present invention has a simple structure, is easy to assemble, and is suitable for production.
  • FIG. 1 is a cross-sectional view of an anti-pull three-dimensional rubber friction pendulum vibration isolation bearing of the present invention
  • Figure 2a is a sectional view of an intermediate support
  • Figure 2b is the first cable
  • Figure 2c is a concave disk
  • Figure 3a is a rubber sandwich pad with a friction surface bonded to a concave surface at both ends;
  • Figure 3b is a rubber sandwich pad
  • Figure 3c is a friction sheet
  • Figure 4a is a sectional view of a vertical isolation plate
  • Figure 4b is a sectional view of a stop ring
  • Figure 4c shows a second cable
  • the invention is an anti-pull three-dimensional rubber friction pendulum vibration isolation support, which is composed of two pairs of concave disks, one rubber interlayer pad, two friction sheets 3, a first cable 6, a second cable 7 and 2 Composed of vertical disc spring discs.
  • the two pairs of concave disks 1 are symmetrically stacked on the rubber interlayer pad 2.
  • the convex surfaces of the two ends of the rubber interlayer pad 2 are bonded with the friction sheet 3.
  • the vertical disc spring 4 and the vibration isolation disk 5 form a vertical vibration isolation disk.
  • the vertical vibration isolation disk is connected to the concave disk 1 through a vertical disc spring 4, the stop ring 8 is connected to the vibration isolation disk 5, two pairs of stop rings 8 and two pairs of concave disks 1 are connected through the first cable 6, and Two cables 7 are connected.
  • the isolation support is used in bridge structures and building structures, and can provide three-dimensional isolation capability. Since the stay cable 6 and the second stay cable 7 connect the parts of the support as a whole, the first stay cable 6 can provide elastic restoring force and pull-out resistance to keep the concave disk 1 stable when relative displacement occurs between the concave disks 1.
  • the second cable 7 connects the vertical vibration isolation plate 5 together, on the one hand, it provides elastic restoring force and anti-pullout force to maintain the stability of the support, on the other hand, it also provides vertical vibration isolation force for the support,
  • the displacement phase provides anti-pullout force to resist overturning and maintain the mechanical stability of the support in different displacement phases.
  • the advantages of low horizontal rigidity of the rubber bearing and the self-resetting of the friction pendulum bearing can be achieved.
  • multi-stage vibration isolation can be achieved.
  • the vertical disc spring 4 provides a small vertical stiffness.
  • the concave disc 1 and the vibration isolation disc 5 are connected through the vertical disc spring 4 to provide vertical isolation to the support and isolate vertical ground vibrations.
  • the displacement of the support can be offset by the elastic force of the rubber cushion layer 2, the self-resetting force generated by the concave surface of the concave disk 1, and the elastic force recovery force generated by the first cable 6 and the second cable 7. , Reduce structural damage and earthquake reconstruction costs.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

一种抗拔型三维橡胶摩擦摆隔震支座，包括上下对应设置的两个凹面盘（1）、设置在两个凹面盘（1）之间的橡胶夹层垫（2）、分别设置在上方的凹面盘（1）的上侧和下方的凹面盘（1）的下侧的两个隔振盘（5），橡胶夹层垫（2）与两个凹面盘（1）分别接触的上下两侧均设置有摩擦薄片（3），凹面盘（1）与隔振盘（5）之间设置连接有竖向碟形弹簧（4），两个凹面盘（1）在相对的内侧之间连接有第一拉索（6），两个隔振盘（5）在相对的内侧之间连接有第二拉索（7）。该隔震支座不仅可以提供多阶段水平隔震能力，还可以隔离竖向地震动，同时可以提供抗拔能力。

Description

一种抗拔型三维橡胶摩擦摆隔震支座 技术领域
本发明为一种抗拔型三维橡胶摩擦摆隔震支座，具体为适用于桥梁及建筑结构隔震加固的构件。
背景技术
传统摩擦摆支座通过摩擦耗能实现隔震功能。在传统的摩擦摆中，尽管其周期、侧向刚度、阻尼、位移能力等均能独立确定。但这些参数在各级地震动和位移下均为恒值，不利于实现灵活的设计以及小震、中震和大震下的多重性能目标。为解决该问题，国外设计出多重摩擦摆支座。但是多重摩擦摆支座由于构造形式复杂，力学性能稳定性有待研究。
由于传统摩擦摆支座是由凹面盘及中间轴承叠在一起，竖向无法提供拉力，力学性能不稳定。当发生水平位移时，容易出现倾覆现象，造成摩擦摆支座失效，无法起到隔震效果，容易对支座及隔震结构造成巨大的损失。同时传统摩擦摆支座无法隔离竖向地震动，限制了摩擦摆支座的广泛应用。
工程中要求隔震支座力学性能稳定。而传统的摩擦摆支座存在这些问题影响支座的力学性能。从而需要提出一种新型三维抗拔橡胶摩擦摆隔震支座，以便于提高支座的稳定性，满足实际工程应用于推广。
发明内容
技术问题：本发明提供一种抗拔型三维橡胶摩擦摆隔震支座，能够提高传统摩擦摆支座力学性能，不仅可以提供多阶段水平隔震能力，还可以隔离竖向地震动。同时可以提供抗拔能力，提高支座的稳定性。
技术方案：本发明的抗拔型三维橡胶摩擦摆隔震支座，包括上下对应设置的两个凹面盘、设置在所述两个凹面盘之间的橡胶夹层垫、分别设置在上方的凹面盘的上侧和下方的凹面盘的下侧的两个隔振盘，所述橡胶夹层垫与两个凹面盘分别接触的上下两侧均设置有摩擦薄片，所述凹面盘与隔振盘之间设置连接有竖向碟形弹簧，所述隔振盘的边缘与凹面盘的外缘扣合，两个凹面盘在相对的内侧之间连接有第一拉索，两个隔振盘在相对的内侧之间连接有第二拉索。
进一步的，本发明隔震支座中，所述摩擦薄片粘接在橡胶夹层垫上。
进一步的，本发明隔震支座中，隔振盘边缘内侧设置有限位环。
进一步的，本发明隔震支座中，凹面盘包括平板和设置在所述平板内测的凹面，第一拉索沿着所述凹面内侧边缘一周设置。
进一步的，本发明隔震支座中，第二拉索沿着限位环内侧边缘一周设置。
进一步的，本发明隔震支座中，橡胶夹层垫材料为高阻尼橡胶，所述摩擦薄片为高分子聚四氟乙烯材料制作而成。
进一步的，本发明隔震支座中，第一拉索和第二拉索均为形状记忆合金制成。
本发明隔震支座中，所述凹面盘可以为45#钢制成，凹面盘的凹滑动表面可以为不锈钢材料。
有益效果：本发明与现有技术相比，具有以下优点：
(1)本发明的隔震支座，具有多阶抗拔力提供支座抗倾覆力。传统摩擦摆及橡胶支座发生水平位移时，由于没有抗拔装置，不能提供竖向拉力，维持支座稳定，支座容易发生倾覆，导致支座隔震失效，引起隔震结构损坏。故而需要提出一种多阶段提供抗拔力的装置。本发明存在竖向拉索，当支座发生水平位移时，一方面竖向拉索可以提供竖向拉力，另一方面竖向拉索可以维持支座的稳定。由于本发明存在2道拉索，可以为支座在不同阶段提供抗拔力以抵抗倾覆，维持支座在不同位移阶段的力学稳定性。
(2)本发明的隔震支座，具有多阶段隔震能力。传统的摩擦摆及橡胶支座，由于支座参数是确定的，难以提供多阶段隔震能力。本发明的隔震支座将橡胶支座与摩擦摆支座相结合，小震由中间橡胶夹层垫抵抗，中震及大震通过摩擦摆抵抗。同时通过设计橡胶支座的刚度及摩擦摆支座的摩擦系数及曲率实现多阶段隔震。
(3)本发明的隔震支座，具有三维隔震能力。传统的摩擦摆支座，不能提供竖向隔震能力。当竖向地震动发生时，支座及结构将发生较大的损害。本发明的隔震支座，通过竖向碟形弹簧，提供较小的竖向刚度，给结构提供竖向隔震能力。
(4)本发明的隔震支座，具备较强的自复位功能。由于橡胶具有弹性强的特点、摩擦摆具有曲率同时拉索提供弹性恢复力，使得支座产生的位移可以通过自重及橡胶和拉索产生的弹力进行抵消，具备自复位功能，减少结构损失和地震重建费用。
(5)本发明的隔震支座构造简单，易于组装，适合生产。
附图说明
图1为本发明的一种抗拔型三维橡胶摩擦摆隔震支座剖面图；
图2a为中间支座剖面图；
图2b为第一拉索；
图2c为凹面盘；
图3a为两端凹表面粘接摩擦板的橡胶夹层垫；
图3b为橡胶夹层垫；
图3c为摩擦薄片；
图4a为竖向隔震盘剖面图；
图4b为限位环剖面图；
图4c为第二拉索。
图中有：1-凹面盘；2-橡胶夹层垫；3-摩擦薄片；4-碟形弹簧；5-隔振盘；6-第一拉索；7-第二拉索；8-限位环。
具体实施方式
下面结合实例和说明书附图对本发明作进一步的说明。
本发明为一种抗拔型三维橡胶摩擦摆隔震支座，由2对凹面盘1、1个橡胶夹层垫2、2片摩擦薄片3和第一拉索6、第二拉索7及2对竖向碟形弹簧盘组成。所述的2对凹面盘1对称叠放在橡胶夹层垫2上，橡胶夹层垫2两端凸表面粘接摩擦薄片3，竖向碟形弹簧4与隔振盘5组成竖向隔振盘，竖向隔振盘通过竖向碟形弹簧4与凹面盘1连接，限位环8与隔振盘5连接，2对限位环8及2对凹面盘1分别通过第一拉索6、第二拉索7相连。
该隔震支座应用于桥梁结构、建筑结构中，可以很好地提供三维隔震能力。由于拉索6、第二拉索7将支座各部分连成整体，凹面盘1之间发生相对位移时，第一拉索6可以提供弹性恢复力及抗拔力使得凹面盘1保持稳定，第二拉索7将竖向隔振盘5连在一起，一方面提供弹性恢复力及抗拔力维持支座稳定，另一方面也为支座提供竖向隔振力，为支座在不同位移阶段提供抗拔力以抵抗倾覆，维持支座在不同位移阶段的力学稳定性。同时由于橡胶夹层垫2与凹面盘1组合一起，有机结合橡胶支座水平刚度低及摩擦摆支座自复位的优势，通过合理设计橡胶刚度及摩擦摆参数可以实现多阶段隔震能力。竖向碟形弹簧4提供较小的竖向刚度，将凹面盘1与隔振盘5通过竖向碟形弹簧4连接，可以给给支座提供竖向隔振能力，可以隔离竖向地震动。同时支座产生的位移可以通过橡胶垫层2弹性力、凹面盘1的凹面的产生的自复位力及第一拉索6和第二拉索7产生的弹力恢复力进行抵消，具备自复位功能，减少结构损坏和地震重建费用。

Claims (7)

  1. 一种抗拔型三维橡胶摩擦摆隔震支座，其特征在于，该构件包括上下对应设置的两个凹面盘(1)、设置在所述两个凹面盘(1)之间的橡胶夹层垫(2)、分别设置在上方的凹面盘(1)的上侧和下方的凹面盘(1)的下侧的两个隔振盘(5)，所述橡胶夹层垫(2)与两个凹面盘(1)分别接触的上下两侧均设置有摩擦薄片(3)，所述凹面盘(1)与隔振盘(5)之间设置连接有竖向碟形弹簧(4)，所述隔振盘(5)的边缘与凹面盘(1)的外缘扣合，两个凹面盘(1)在其相对的凹面边缘之间连接有第一拉索(6)，两个隔振盘(5)在其相对的边缘之间连接有第二拉索(7)。
  2. 根据权利要求1所述的一种抗拔型三维橡胶摩擦摆隔震支座，其特征在于，所述摩擦薄片(3)粘接在橡胶夹层垫(2)上。
  3. 根据权利要求1所述的一种抗拔型三维橡胶摩擦摆隔震支座，其特征在于，所述隔振盘(5)边缘内侧设置有限位环(8)。
  4. 根据权利要求1、2或3所述的一种抗拔型三维橡胶摩擦摆隔震支座，其特征在于，所述凹面盘(1)包括平板和设置在所述平板内侧的凹面，第一拉索(6)沿着所述凹面内侧边缘一周设置。
  5. 根据权利要求1、2或3所述的一种抗拔型三维橡胶摩擦摆隔震支座，其特征在于，所述第二拉索(7)沿着限位环(8)内侧边缘一周设置。
  6. 根据权利要求1、2或3所述的一种抗拔型三维橡胶摩擦摆隔震支座，其特征在于，所述凹面盘(1)为45#钢材料，凹面盘的凹面为不锈钢材料，橡胶夹层垫(2)材料为高阻尼橡胶，所述摩擦薄片(3)为高分子聚四氟乙烯材料制作而成。
  7. 根据权利要求1、2或3所述的一种抗拔型三维橡胶摩擦摆隔震支座，其特征在于，所述第一拉索(6)和第二拉索(7)均为形状记忆合金制成。
PCT/CN2018/103037 2018-07-02 2018-08-29 一种抗拔型三维橡胶摩擦摆隔震支座 WO2020006850A1 (zh)

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CN112696077A (zh) * 2020-12-26 2021-04-23 北京工业大学 具有多摆调谐芯筒的框架-核心筒耗能减震结构体系
WO2021093645A1 (zh) * 2019-11-11 2021-05-20 徐園植 锁固式防侧翻桥梁支座
US20220074148A1 (en) * 2020-02-21 2022-03-10 Chang'an University Oil pressure type seismic mitigation and isolation support and use method thereof
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