WO2011088603A1 - Seismic isolation bearing with non-linear dampers - Google Patents

Seismic isolation bearing with non-linear dampers Download PDF

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Publication number
WO2011088603A1
WO2011088603A1 PCT/CN2010/001391 CN2010001391W WO2011088603A1 WO 2011088603 A1 WO2011088603 A1 WO 2011088603A1 CN 2010001391 W CN2010001391 W CN 2010001391W WO 2011088603 A1 WO2011088603 A1 WO 2011088603A1
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WIPO (PCT)
Prior art keywords
plate
lower seat
seat plate
spoke
nonlinear
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PCT/CN2010/001391
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French (fr)
Chinese (zh)
Inventor
孟凡超
刘士林
刘晓东
葛胜锦
吴明先
王伟
彭泽友
熊治华
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中交第一公路勘察设计研究院有限公司
中交公路规划设计院有限公司
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Application filed by 中交第一公路勘察设计研究院有限公司, 中交公路规划设计院有限公司 filed Critical 中交第一公路勘察设计研究院有限公司
Publication of WO2011088603A1 publication Critical patent/WO2011088603A1/en

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02Buildings, 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
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/0215Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems

Definitions

  • the invention relates to the technical field of support devices for bridges and other construction projects, and in particular relates to a non-linear damping radiation isolation bearing. Background technique
  • the support is one of the important components in the bridge and construction project. Its function is to transfer the upper load of the bridge and the building structure to the abutment through the support, and at the same time ensure the required force, displacement and rotation of the structure.
  • the domestic anti-seismic devices for bridges and other construction projects mainly include lead-separated rubber bearings, vibration-isolated plate rubber bearings, polyurethane spring ball bearings, large friction coefficient seismic bearings and hyperboloid spherical Seismic isolation bearings, etc., have their own characteristics, and there are also some shortcomings.
  • Lead-separated rubber bearings are gradually replaced by other seismic isolation bearings due to poor durability, low load carrying capacity and serious environmental pollution.
  • the vibration-proof plate rubber bearing is limited in use due to its poor durability and low load carrying capacity.
  • Polyurethane spring ball bearings are subject to certain restrictions due to their poor durability and low post-refraction displacement.
  • the hyperboloid spherical isolation bearing has good durability and load carrying capacity, and has also been applied in some projects, but it has been found through analysis and actual use that the bearing has reduced seismic isolation effect. Still not ideal, mainly because it adopts a hyperboloid structure.
  • the upper structure will produce large vertical displacement and angular displacement, especially for continuous beam bridges.
  • the additional bending moment may also resonate with the load-bearing main structure, thereby adversely affecting the structure, and under the action of the extreme seismic force, the load-bearing main structure may be thrown or impossible to reset. Therefore, the structure is still essentially an earthquake-resistant design, and the actual seismic effect is limited.
  • the main structure types of the support mainly include a ball type, a basin type and a plate type, and their structures are similarly ⁇ generally include an upper seat plate, a middle lining plate and a lower seat plate to satisfy the basic use function of the support.
  • corresponding functional components are arranged between the upper and middle lining plates, and between the middle lining plate and the lower pedestal plate to meet the special requirements of the structural design.
  • the invention provides a nonlinear damping radish isolation bearing to solve the problem that the prior art has less post-retroactivity displacement, weak restoring force and less anti-isolation effect.
  • a nonlinear damping radiation isolation bearing comprising a support body, the support body comprising an upper seat plate, a middle liner plate and a lower seat
  • the seat plate, the middle lining plate and the lower seat plate are provided with a functional plate
  • the special feature thereof is: further comprising: a seismic isolation device, wherein the seismic isolation device comprises a limiting block and a nonlinear damping spoke, the lower The surface of the seat plate and the outer side of the middle lining plate are uniformly fixed with a plurality of limiting blocks, and the limiting block is connected with the lower seat plate through the limit energy consuming bolt; one end of the nonlinear damping spoke is fixedly connected with the middle lining plate, and One end is fixedly connected to the lower seat plate, and the nonlinear damping spoke includes a plurality of uniformly distributed around the outer side of the inner liner.
  • the above-mentioned support body can adopt a plate type, a basin type
  • the above function board is a high friction plate, and the limit block is closely attached to the middle lining plate.
  • the function board is a sliding board, and the seismic isolation device further comprises a spacer disposed on the lower seat plate, and one end of the nonlinear damping spoke is coupled thereto, wherein a pair of spacers are provided with a finite slot, the longitudinal direction and the sliding The end of the non-linear damper with the same direction is clamped in the limit chute, and the sliding block in the sliding direction is provided with a sliding interval between the limiting block and the middle lining. It constitutes a one-way movable type support.
  • the function board is a sliding board
  • the seismic isolation device further comprises a spacer disposed on the lower seat plate, wherein the spacer is provided with a finite slot, and the end of the nonlinear damping spoke is clamped in the limiting slot.
  • the inclination direction of the chute of the above-mentioned limit chute coincides with the slip path of the nonlinear damping spoke.
  • the displacement of the bearing in the active direction under normal use is not constrained.
  • the above limit block is provided with four, and the corresponding nonlinear damping spokes are also provided with four.
  • the two directions of action are perpendicular to each other.
  • the invention has all the functions of the conventional common support on the one hand, and can reduce the vibration isolation on the other hand, that is, reduce or isolate the earthquake to the bridge or other through the support body and the seismic isolation member when the earthquake occurs.
  • the impact of the building structure Specifically, it is reflected in the following aspects:
  • the invention increases the seismic isolation members such as the limiting block, the limiting bolt and the nonlinear damping spoke, so that the energy dissipation bolt, the reciprocating displacement friction and the nonlinear damping spoke are used in the horizontal force or the earthquake.
  • Elastoplastic deformation (damping) and other methods to consume energy prolong the structural vibration period, thereby reducing or isolating the impact of earthquakes on the structure, achieving step-by-step defense and grading energy consumption.
  • (1) The limit block is connected to the lower seat plate through the limit energy-consuming bolt.
  • the horizontal force of the support can be precisely controlled by adjusting the diameter of the limit energy-consuming bolt; (2) by changing the limit plate
  • the fixed position can meet the normal use displacement requirements of the support, and the function of the support can be changed to make the fixed support, the one-way movable support, and the two-way movable support; (3) by setting the limit slip
  • the groove can meet the normal displacement requirements of the support, and the displacement amount corresponds to the fixed position of the limit plate, and can also change the function of the support;
  • the stiffness can be adjusted by changing the shape and size of the nonlinear damping spoke. To withstand W
  • the invention solves the problem that the lack of long-term durability, strong resilience and large post-cracking seismic isolation support for engineering has been solved for a long time, and the structural displacement is realized. Locking and overall synergistic earthquake resistance, step by step defense, grading energy consumption, good use effect;
  • the invention has good social and economic value and is therefore suitable for large-scale industrial production.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • Figure 2 is a view taken along the line A in Figure 1;
  • FIG. 3 is a schematic structural view of Embodiment 2 of the present invention.
  • Figure 4 is a B-direction view of Figure 3;
  • Figure 5 is a schematic view of Embodiment 3.
  • the following support body is given in the embodiment only as a spherical structure, but is not limited to this configuration.
  • a nonlinear damping epitaxial isolation mount includes a support body, a limit block 5 and a nonlinear damping spoke 3.
  • the support body comprises an upper seat plate 1, a middle lining plate 2 and a lower seat plate 4, and a functional plate 6 is interposed between the inner lining plate 2 and the lower seat plate 4; the table of the lower seat plate 4
  • the outer surface of the front and middle lining plates 2 is uniformly fixed with four limiting blocks 5, and the limiting block 5 is connected with the lower seat plate 4 through the limit energy consuming bolts;
  • the non-linear damping spokes 3 comprise a uniform cloth winding around the middle lining Four of the outer sides of the plate 2, the end of each of the nonlinear damping spokes 3 is fixedly connected to the middle lining plate 2, and the other end is fixedly connected to the lower seat plate 4.
  • the function board 6 is a high friction plate, and the limiting block 5 is closely attached to the middle lining plate 2 to form a fixed type of support.
  • the support realizes the normal function through the support body, and the horizontal force is transmitted through the limit block. All the structures are in the lower elastic working stage.
  • a nonlinear damping epitaxial isolation mount includes a support body, a limit block 5 and a nonlinear damping spoke 3.
  • the support body comprises an upper seat plate 1, a middle lining plate 2 and a lower seat plate 4, and a functional plate 6 is interposed between the inner lining plate 2 and the lower seat plate 4; the surface of the lower seat plate 4, the middle
  • the outer side of the lining 2 is uniformly disposed with four limiting blocks 5, and the limiting block 5 is connected to the lower seat plate 4 through the limit energy consuming bolt, and the limiting block 5 in the sliding direction is disposed between the limiting block 5 and the middle lining plate 2.
  • said functional panel 6 is a sliding plate, said nonlinear damping spokes 3 comprising four uniformly distributed around the outer side of the intermediate lining 2, one end of each non-linear damper spoke 3 being fixedly connected to the intermediate lining 2 , the lower seat plate 4 is provided with: a block 7 , the other end of the nonlinear damping spoke 3 is coupled thereto to realize the connection with the lower seat plate 4 , wherein a pair of spacers 7 are provided with a limited position chute 8 , the long direction The end of the nonlinear damping spoke 3, which is in line with the sliding direction, is engaged in the limit chute 8 to form a one-way movable type support.
  • a non-linear damping anti-seismic bearing includes a support body, a limit block 5 and a nonlinear damping spoke 3.
  • the support body comprises an upper seat plate 1, a middle lining plate 2 and a lower seat plate 4, and a functional plate 6 is interposed between the inner lining plate 2 and the lower seat plate 4; the surface of the lower seat plate 4, the inner lining
  • the outer side of the plate 2 is uniformly fixed with four limiting blocks 5, and the limiting block 5 is connected to the lower seat plate 4 through the limit energy-consuming bolt, and a sliding interval is arranged between the limiting block 5 and the middle lining plate 2;
  • the function board 6 is The sliding plate, the non-linear damping spokes 3 comprise four wires uniformly distributed around the outer side of the middle lining plate 2, one end of each non-linear damper spoke 3 is fixedly connected with the middle lining plate 2, and the lower seat plate 4 is provided with shims 7.
  • the finite stop chute 8 is disposed on the block 7, and the other end of the nonlinear damper spoke 3 is engaged in the limit chute 8 to realize the connection with the lower seat plate 4 to form a bidirectional movable type support.
  • the support body When in use, the support body is anchored to the upper and lower parts of the engineering structure (main beam or abutment), and the structure can be used regardless of whether it is positive or negative.
  • the invention realizes the design concept of "step by step defense, grading energy consumption” by the following principle of reducing vibration isolation:
  • the support transmits the horizontal force through the limit block, and all the structures are in the lower flexible working stage;
  • the support body is in the elastoplastic working stage, the nonlinear damping radiation has large plastic deformation, but it is not broken, on the one hand, it can prolong the seismic reaction cycle, on the other hand, through the reciprocating displacement friction and Damping to dissipate seismic energy and effectively reset the support to prevent the beam from slipping off, ensuring smooth and disaster relief of the bridge during the earthquake.
  • the above structure can be custom designed or selected according to the characteristics of the bridge structure and the local geological structure.

Abstract

A seismic isolation bearing with non-linear dampers comprises a bearing body, wherein the bearing body includes an upper bearing plate (1), a middle lining board (2), a lower bearing plate (4), and a functional board (6) sandwiched between the middle lining board (2) and the lower bearing plate (4), and further comprises a seismic isolation device consisting of stopping blocks (5) and non-linear dampers (3). Several stopping blocks (5) are evenly fixed on the surface of the lower bearing plate (4) outside of the middle lining board (2) by energy dissipating bolts, and a plurality of non-linear dampers (3) are evenly set surrounding the outer periphery of the middle lining board (2) with one end thereof fixed to the middle lining board (2) and the other end fixed to the lower bearing plate (4).

Description

说 明 书  Description
非线性阻尼辐减隔震支座 技术领域  Nonlinear damping radiation isolation bearing technology
本发明涉及桥梁及其它建筑工程的支撑装置技术领域, 具体涉及一种非 线性阻尼辐减隔震支座。 背景技术  The invention relates to the technical field of support devices for bridges and other construction projects, and in particular relates to a non-linear damping radiation isolation bearing. Background technique
支座是桥梁及建筑工程中的重要组成部件之一, 其作用是将桥梁及建筑 结构的上部载荷通过支座传递到墩台上, 同时保证结构所要求的受力、 位移 和转动的需要。  The support is one of the important components in the bridge and construction project. Its function is to transfer the upper load of the bridge and the building structure to the abutment through the support, and at the same time ensure the required force, displacement and rotation of the structure.
近年来, 随着国家对基础设施建设力度的加大, 桥梁及建筑工程得到了 高速发展, 各类新型结构型式和功能性桥梁及建筑不断涌现, 同时也对支座 的技术性能、 功能和造价等提出了更高的要求。 特别是 5·12汶川大地震后, 人们更加清楚地认识到地震灾害的严重性, 并对工程建筑的抗震性能提出了 更高的要求。 国内一些科研机构的专家和学者, 先后提出了一些不同类型的 抗震、 减隔震支座。  In recent years, with the increase of infrastructure construction in the country, bridges and construction projects have been developed at a high speed. Various types of new structural types and functional bridges and buildings have emerged, as well as technical performance, functions and cost of the bearings. Etc. raised higher requirements. Especially after the May 12 Wenchuan Earthquake, people became more aware of the seriousness of earthquake disasters and put forward higher requirements for the seismic performance of engineering buildings. Experts and scholars from some domestic research institutes have proposed some different types of seismic and seismic isolation bearings.
目前, 国内用于桥梁及其它建筑工程的抗震装置主要有铅芯隔震橡胶支 座、 隔震板式橡胶支座、 聚氨脂弹簧球型支座、 大摩擦系数抗震支座以及双 曲面球型减隔震支座等, 各有特点, 也存在一些不足之处。  At present, the domestic anti-seismic devices for bridges and other construction projects mainly include lead-separated rubber bearings, vibration-isolated plate rubber bearings, polyurethane spring ball bearings, large friction coefficient seismic bearings and hyperboloid spherical Seismic isolation bearings, etc., have their own characteristics, and there are also some shortcomings.
铅芯隔震橡胶支座, 由于耐久性较差、 承载能力小、 环境污染严重等原 因, 将逐渐被其它减隔震支座取代。  Lead-separated rubber bearings are gradually replaced by other seismic isolation bearings due to poor durability, low load carrying capacity and serious environmental pollution.
隔震板式橡胶支座, 由于耐久性较差、 承载能力较小, 使用中受到一定 限制。  The vibration-proof plate rubber bearing is limited in use due to its poor durability and low load carrying capacity.
聚氨脂弹簧球型支座, 由于耐久性差、 屈后位移小, 使用中也受到了一 定限制。  Polyurethane spring ball bearings are subject to certain restrictions due to their poor durability and low post-refraction displacement.
大摩擦系数抗震支座, 由于传递到下部结构的地震横向力比较大, 仅依 靠大摩擦系数的摩擦副消耗地震能量, 而不能提供恢复力, 只能作为一种抗 震构造作用, 而实际抗震效果也满足不了结构设计的要求。 . 双曲面球型减隔震支座具有较好的耐久性和承载能力, 在一些工程上也 得到了应用, 但通过对其进行分析以及实际使用的情况发现, 该种支座减隔 震效果依然不够理想, 主要因为其采用了双曲面构造, 使用过程中特别是在 屈后位移过程中, 上部结构会产生较大的竖向位移和转角位移, 特别是对于 连续梁桥将产生较大的附加弯矩, 还有可能与承载主体结构发生共振, 从而 给结构带来不利的影响, 并且在极限地震力作用下, 承载主体结构有被抛落 或无法复位的可能性。 因此, 该结构本质上仍属一次抗震设计, 实际抗震效 果受到一定限制。 Large friction coefficient seismic bearing, because the lateral force transmitted to the lower structure is relatively large, only The friction pair with a large friction coefficient consumes seismic energy, but cannot provide resilience. It can only be used as an earthquake-resistant structure, and the actual seismic effect can not meet the requirements of structural design. The hyperboloid spherical isolation bearing has good durability and load carrying capacity, and has also been applied in some projects, but it has been found through analysis and actual use that the bearing has reduced seismic isolation effect. Still not ideal, mainly because it adopts a hyperboloid structure. During the process of use, especially during the post-buckling displacement process, the upper structure will produce large vertical displacement and angular displacement, especially for continuous beam bridges. The additional bending moment may also resonate with the load-bearing main structure, thereby adversely affecting the structure, and under the action of the extreme seismic force, the load-bearing main structure may be thrown or impossible to reset. Therefore, the structure is still essentially an earthquake-resistant design, and the actual seismic effect is limited.
目前支座的主体结构类型主要有球型、 盆型和板型, 它们的结构相似 Λ 大体上都包括上座板、 中衬板和下座板, 以满足支座的基本使用功能。 再根 据实际应用中的不同需求, 在上座板和中衬板之间, 中衬板和下座板之间设 置相应的功能组件, 以满足结构设计的特殊要求。 以上描述的各种抗震、 减 : 隔震支座, 因其结构和材料方面的各种限制, 实际抗震效果已经满足不了当 :( 前结构设计中的使用要求, 迫切需要改进和重新设计。 ' 发明内容 At present, the main structure types of the support mainly include a ball type, a basin type and a plate type, and their structures are similarly Λ generally include an upper seat plate, a middle lining plate and a lower seat plate to satisfy the basic use function of the support. According to the different needs in the actual application, corresponding functional components are arranged between the upper and middle lining plates, and between the middle lining plate and the lower pedestal plate to meet the special requirements of the structural design. Various seismic described above, Save: isolation bearing, due to its structural limitations and various aspects of the materials, the practical effect of shock when the requirements can not be satisfied before :( structural design, and redesign the urgent need to improve '. Summary of the invention
本发明提供一种非线性阻尼辐减隔震支座, 以解决现有技术存在的屈后 位移较小、 恢复力弱、 减隔震效果不理想问题。  The invention provides a nonlinear damping radish isolation bearing to solve the problem that the prior art has less post-retroactivity displacement, weak restoring force and less anti-isolation effect.
为有效克服现有技术中存在的问题, 本发明的技术解决方案是: 一种非 线性阻尼辐减隔震支座, 包括支座本体, 所述支座本体包括上座板、 中衬板 和下座板, 中衬板和下座板之间夹设有功能板, 其特殊之处在于: 还包括减 隔震装置, 所述减隔震装置包括限位块和非线性阻尼辐, 所述下座板的表面、 中衬板的外侧固定均匀设置有数个限位块, 限位块通过限位耗能螺栓与下座 板连接; 所述非线性阻尼辐的一端与中衬板固定连接, 另一端与下座板固定 连接, 非线性阻尼辐包括均布绕于中衬板外侧的数个。 上述支座本体可以采用板式、 盆式或球型的结构型式。 In order to effectively overcome the problems existing in the prior art, the technical solution of the present invention is: a nonlinear damping radiation isolation bearing, comprising a support body, the support body comprising an upper seat plate, a middle liner plate and a lower seat The seat plate, the middle lining plate and the lower seat plate are provided with a functional plate, and the special feature thereof is: further comprising: a seismic isolation device, wherein the seismic isolation device comprises a limiting block and a nonlinear damping spoke, the lower The surface of the seat plate and the outer side of the middle lining plate are uniformly fixed with a plurality of limiting blocks, and the limiting block is connected with the lower seat plate through the limit energy consuming bolt; one end of the nonlinear damping spoke is fixedly connected with the middle lining plate, and One end is fixedly connected to the lower seat plate, and the nonlinear damping spoke includes a plurality of uniformly distributed around the outer side of the inner liner. The above-mentioned support body can adopt a plate type, a basin type or a ball type structure type.
上述功能板是高摩擦板, 限位块与中衬板贴合紧密。 形成固定型支座。 上述功能板是滑动板, 所述减隔震装置还包括下座板上设置的垫块, 非 线性阻尼辐的一端与之联接, 其中一对垫块上设置有限位滑槽, 长方向与滑 动方向一致的非线性阻尼辐的端部卡设于限位滑槽内, 滑动方向上的限位块 与中衬板之间设有滑动间隔。 构成单向活动型支座。  The above function board is a high friction plate, and the limit block is closely attached to the middle lining plate. Form a fixed type of support. The function board is a sliding board, and the seismic isolation device further comprises a spacer disposed on the lower seat plate, and one end of the nonlinear damping spoke is coupled thereto, wherein a pair of spacers are provided with a finite slot, the longitudinal direction and the sliding The end of the non-linear damper with the same direction is clamped in the limit chute, and the sliding block in the sliding direction is provided with a sliding interval between the limiting block and the middle lining. It constitutes a one-way movable type support.
上述功能板是滑动板, 所述减隔震装置还包括下座板上设置的垫块, 垫 块上均设置有限位滑槽, 非线性阻尼辐的端部卡设于限位滑槽内, 限位块与 中衬板之间设有滑动间隔。 构成多向活动型支座。  The function board is a sliding board, and the seismic isolation device further comprises a spacer disposed on the lower seat plate, wherein the spacer is provided with a finite slot, and the end of the nonlinear damping spoke is clamped in the limiting slot. There is a sliding interval between the limiting block and the middle lining. Form a multi-directional movable support.
上述限位滑槽的滑槽的倾斜方向与非线性阻尼辐的滑移轨迹相一致。 保 证支座在正常使用状态下沿活动方向的位移不受约束。  The inclination direction of the chute of the above-mentioned limit chute coincides with the slip path of the nonlinear damping spoke. The displacement of the bearing in the active direction under normal use is not constrained.
上述限位块设置有四个, 相应的非线性阻尼辐也设置有四个。 两个作用 方向相互垂直。  The above limit block is provided with four, and the corresponding nonlinear damping spokes are also provided with four. The two directions of action are perpendicular to each other.
本发明一方面拥有现有普通支座的全部功能, 另一方面可以起到减隔震 作用, 即在地震发生时, 通过支座本体及减隔震构件, 减小或隔离地震对桥 梁或其它建筑结构的影响。 具体来讲, 体现在以下几个方面:  The invention has all the functions of the conventional common support on the one hand, and can reduce the vibration isolation on the other hand, that is, reduce or isolate the earthquake to the bridge or other through the support body and the seismic isolation member when the earthquake occurs. The impact of the building structure. Specifically, it is reflected in the following aspects:
本发明增加了限位块、 限位螺栓、 非线性阻尼辐等减隔震构件, 使得在 作用水平力或发生地震时, 通过限位耗能螺栓消能、 往复位移摩擦和非线性 阻尼辐的弹塑性变形 (阻尼) 等方式来消耗能量, 延长结构震动周期, 从而 减小或隔离地震对结构的影响, 实现逐级设防和分级耗能。 其中: (1 ) 限位 块通过限位耗能螺栓与下座板连接, 通过调整限位耗能螺栓直径的大小可精 确控制支座承受的水平力大小; (2)通过改变限位板的固定位置可满足支座 的正常使用位移要求, 可以改变支座的使用功能, 使之分别为固定型支座、 单向活动型支座、 双向活动型支座; (3) 通过设置限位滑槽可满足支座的正 常使用位移要求, 其位移量与限位板的固定位置相对应, 亦可改变支座的使 用功能; (4) 通过改变非线性阻尼辐的形状尺寸, 可以调整其刚度, 以承受 W The invention increases the seismic isolation members such as the limiting block, the limiting bolt and the nonlinear damping spoke, so that the energy dissipation bolt, the reciprocating displacement friction and the nonlinear damping spoke are used in the horizontal force or the earthquake. Elastoplastic deformation (damping) and other methods to consume energy, prolong the structural vibration period, thereby reducing or isolating the impact of earthquakes on the structure, achieving step-by-step defense and grading energy consumption. Among them: (1) The limit block is connected to the lower seat plate through the limit energy-consuming bolt. The horizontal force of the support can be precisely controlled by adjusting the diameter of the limit energy-consuming bolt; (2) by changing the limit plate The fixed position can meet the normal use displacement requirements of the support, and the function of the support can be changed to make the fixed support, the one-way movable support, and the two-way movable support; (3) by setting the limit slip The groove can meet the normal displacement requirements of the support, and the displacement amount corresponds to the fixed position of the limit plate, and can also change the function of the support; (4) The stiffness can be adjusted by changing the shape and size of the nonlinear damping spoke. To withstand W
地震作用下分级设防的不同水平力。 Different horizontal forces for grading fortification under earthquake action.
与现有技术相比, 本发明的优点是:  The advantages of the present invention over the prior art are:
1 )在技术上, 减隔震效果更理想: 本发明解决了长期以来我国缺少耐久 性好、 恢复力强、 屈后位移大的减隔震支座供工程上使用的难题, 实现了结 构位移锁定和整体协同抗震, 逐级设防、 分级耗能, 使用效果好;  1) Technically, the anti-seismic effect is more ideal: The invention solves the problem that the lack of long-term durability, strong resilience and large post-cracking seismic isolation support for engineering has been solved for a long time, and the structural displacement is realized. Locking and overall synergistic earthquake resistance, step by step defense, grading energy consumption, good use effect;
2)从经济上, 造价更合理: 由于结构简洁、 加工容易, 因此制造成本较 低, 同时施工方便、 维修便易、 工程投入少, 对结构防灾、 减灾, 尤其是作 为生命线工程的桥梁的抗震、 救灾, 具有非常重要的意义;  2) Economically, the cost is more reasonable: Due to the simple structure and easy processing, the manufacturing cost is low, and the construction is convenient, the maintenance is easy, the engineering investment is small, and the structural disaster prevention and disaster reduction, especially as a bridge for lifeline engineering. Earthquake resistance and disaster relief are of great significance;
3)适宜大规模工业化生产需要: 本发明具有很好的社会经济价值, 因此 适宜大规模工业化生产需要。 附图说明  3) Suitable for large-scale industrial production: The invention has good social and economic value and is therefore suitable for large-scale industrial production. DRAWINGS
图 1是本发明实施例 1的结构示意图;  1 is a schematic structural view of Embodiment 1 of the present invention;
图 2是图 1的 A向视图;  Figure 2 is a view taken along the line A in Figure 1;
图 3是本发明实施例 2的结构示意图;  Figure 3 is a schematic structural view of Embodiment 2 of the present invention;
图 4是图 3的 B向视图;  Figure 4 is a B-direction view of Figure 3;
图 5是实施例 3的示意图。  Figure 5 is a schematic view of Embodiment 3.
附图标记说明如下:  The reference numerals are as follows:
1一上座板, 2—中衬板, 3—非线性阻尼辐, 4一下座板, 5—限位块, 6 一功能板, 7—垫块, 8—限位滑槽。 具体实施方式  1 upper seat plate, 2 - middle lining plate, 3 - nonlinear damping spoke, 4 lower seat plate, 5 - limit block, 6 one function board, 7 - block, 8 - limit chute. detailed description
下面将结合附图和实施例对本发明做详细地描述。  The invention will now be described in detail in conjunction with the drawings and embodiments.
以下支座本体在实施例中给出的仅为球型结构型式, 但并不限于该结构 型式。  The following support body is given in the embodiment only as a spherical structure, but is not limited to this configuration.
实施例 1, 参见图 1和图 2。一种非线性阻尼辐减隔震支座, 包括支座本 体、 限位块 5和非线性阻尼辐 3。 所说的支座本体包括上座板 1、 中衬板 2 和下座板 4, 中衬板 2和下座板 4之间夹设有功能板 6; 所说下座板 4的表 面、 中衬板 2的外侧固定均匀设置有四个限位块 5, 限位块 5通过限位耗能 螺栓与下座板 4连接; 所说非线性阻尼辐 3包括均布绕于中衬板 2外侧的四 个, 每个非线性阻尼辐 3的- 端与中衬板 2固定连接, 另一端与下座板 4固 定连接。 所说的功能板 6是高摩擦板, 限位块 5与中衬板 2贴合紧密, 形成 固定型支座。 Embodiment 1, see Figures 1 and 2. A nonlinear damping epitaxial isolation mount includes a support body, a limit block 5 and a nonlinear damping spoke 3. The support body comprises an upper seat plate 1, a middle lining plate 2 and a lower seat plate 4, and a functional plate 6 is interposed between the inner lining plate 2 and the lower seat plate 4; the table of the lower seat plate 4 The outer surface of the front and middle lining plates 2 is uniformly fixed with four limiting blocks 5, and the limiting block 5 is connected with the lower seat plate 4 through the limit energy consuming bolts; the non-linear damping spokes 3 comprise a uniform cloth winding around the middle lining Four of the outer sides of the plate 2, the end of each of the nonlinear damping spokes 3 is fixedly connected to the middle lining plate 2, and the other end is fixedly connected to the lower seat plate 4. The function board 6 is a high friction plate, and the limiting block 5 is closely attached to the middle lining plate 2 to form a fixed type of support.
在正常状态下, 支座通过支座本体实现常规的普通功能, 并通过限位块 来实现水平力的传递, 全部结构均处于较低的弹性工作阶段。  Under normal conditions, the support realizes the normal function through the support body, and the horizontal force is transmitted through the limit block. All the structures are in the lower elastic working stage.
实施例 2, 参见图 3和图 4。一种非线性阻尼辐减隔震支座, 包括支座本 体、 限位块 5和非线性阻尼辐 3。 所说的支座本体包括上座板 1、 中衬板 2· 和下座板 4, 中衬板 2和下座板 4之间夹设有功能板 6; 所说下座板 4的表 面、 中衬板 2的外侧固定均匀设置有四个限位块 5, 限位块 5通过限位耗能 螺栓与下座板 4连接,滑动方向上的限位块 5与中衬板 2之间设有滑动间隔; 所说的功能板 6是滑动板, 所说非线性阻尼辐 3包括均布绕于中衬板 2外侧 的四个, 每个非线性阻尼辐 3的一端与中衬板 2固定连接, 下座板 4上设置: 有垫块 7, 非线性阻尼辐 3的另一端与之联接从而实现与下座板 4的连接, 其中一对垫块 7上设置有限位滑槽 8, 长方向与滑动方向一致的非线性阻尼 辐 3的端部卡设于限位滑槽 8内, 形成单向活动型支座。 Example 2, see Figures 3 and 4. A nonlinear damping epitaxial isolation mount includes a support body, a limit block 5 and a nonlinear damping spoke 3. The support body comprises an upper seat plate 1, a middle lining plate 2 and a lower seat plate 4, and a functional plate 6 is interposed between the inner lining plate 2 and the lower seat plate 4; the surface of the lower seat plate 4, the middle The outer side of the lining 2 is uniformly disposed with four limiting blocks 5, and the limiting block 5 is connected to the lower seat plate 4 through the limit energy consuming bolt, and the limiting block 5 in the sliding direction is disposed between the limiting block 5 and the middle lining plate 2. Sliding interval; said functional panel 6 is a sliding plate, said nonlinear damping spokes 3 comprising four uniformly distributed around the outer side of the intermediate lining 2, one end of each non-linear damper spoke 3 being fixedly connected to the intermediate lining 2 , the lower seat plate 4 is provided with: a block 7 , the other end of the nonlinear damping spoke 3 is coupled thereto to realize the connection with the lower seat plate 4 , wherein a pair of spacers 7 are provided with a limited position chute 8 , the long direction The end of the nonlinear damping spoke 3, which is in line with the sliding direction, is engaged in the limit chute 8 to form a one-way movable type support.
使用中, 在正常状态下, 支座通过支座本体实现常规的普通功能, 在非 滑动方向上的支座本体的中衬板 2与限位块 5贴合紧密, 并通过限位块来实 现水平力的传递; 滑动方向上的中衬板 2与限位块 5之间有间隔, 全部结构 均处于较低的弹性工作阶段。 实施例 3, 参见图 5。 一种非线性阻尼辐减隔震支座, 包括支座本.体、 限 位块 5和非线性阻尼辐 3。 所说的支座本体包括上座板 1、 中衬板 2和下座 板 4, 中衬板 2和下座板 4之间夹设有功能板 6; 所说下座板 4的表面、 中 衬板 2的外侧固定均匀设置有四个限位块 5, 限位块 5通过限位耗能螺栓与 下座板 4连接, 限位块 5与中衬板 2之间设有滑动间隔; 所说的功能板 6是 滑动板, 所说非线性阻尼辐 3包括均布绕于中衬板 2外侧的四个, 每个非线 性阻尼辐 3的一端与中衬板 2固定连接, 下座板 4上设置有垫块 7, 垫块 7 上均设置有限位滑槽 8, 非线性阻尼辐 3的另一端卡设于限位滑槽 8内从而 实现与下座板 4的连接, 形成双向活动型支座。 In use, in the normal state, the support realizes a common ordinary function through the support body, and the middle liner 2 of the support body in the non-sliding direction is closely attached to the limit block 5, and is realized by the limit block. The horizontal force is transmitted; there is a gap between the middle lining 2 in the sliding direction and the limiting block 5, and all the structures are in a lower elastic working stage. Example 3, see Figure 5. A non-linear damping anti-seismic bearing includes a support body, a limit block 5 and a nonlinear damping spoke 3. The support body comprises an upper seat plate 1, a middle lining plate 2 and a lower seat plate 4, and a functional plate 6 is interposed between the inner lining plate 2 and the lower seat plate 4; the surface of the lower seat plate 4, the inner lining The outer side of the plate 2 is uniformly fixed with four limiting blocks 5, and the limiting block 5 is connected to the lower seat plate 4 through the limit energy-consuming bolt, and a sliding interval is arranged between the limiting block 5 and the middle lining plate 2; The function board 6 is The sliding plate, the non-linear damping spokes 3 comprise four wires uniformly distributed around the outer side of the middle lining plate 2, one end of each non-linear damper spoke 3 is fixedly connected with the middle lining plate 2, and the lower seat plate 4 is provided with shims 7. The finite stop chute 8 is disposed on the block 7, and the other end of the nonlinear damper spoke 3 is engaged in the limit chute 8 to realize the connection with the lower seat plate 4 to form a bidirectional movable type support.
使用时, 将支座本体锚固于工程结构的上、 下部(主梁或墩台), 且本结 构无论正反均可使用。  When in use, the support body is anchored to the upper and lower parts of the engineering structure (main beam or abutment), and the structure can be used regardless of whether it is positive or negative.
本发明通过下述减隔震原理来实现 "逐级设防、分级耗能"的设计理念: The invention realizes the design concept of "step by step defense, grading energy consumption" by the following principle of reducing vibration isolation:
(1) 在正常使用状态下: 支座通过限位块来实现水平力的传递, 全部结构 均处于较低的弹性工作阶段; (1) Under normal use: The support transmits the horizontal force through the limit block, and all the structures are in the lower flexible working stage;
(2)在常遇地震状态下: 支座本体处于弹性工作阶段, 支座限位结构处于 弹塑性工作阶段, 限位耗能螺栓产生较小的塑性变形, 但未断裂;  (2) In the case of frequent earthquakes: The support body is in the elastic working stage, the support limit structure is in the elastoplastic working stage, and the limit energy-consuming bolts produce less plastic deformation, but not broken;
(3) 当少遇地震状态下: 支座本体处于弹性工作阶段, 支座限位耗能螺栓 被剪掉, 消耗部分地震能量, 同时非线性阻尼辐和摩擦面共同开始工作, 但 非线性阻尼辐处于弹性工作阶段;  (3) When there is less earthquake: The support body is in the elastic working stage, the support limit bolts are cut off, and part of the seismic energy is consumed. At the same time, the nonlinear damping spokes and the friction surface work together, but the nonlinear damping The spoke is in an elastic working phase;
(4) 在罕遇地震状态下: 支座本体处于弹塑性工作阶段, 非线性阻尼辐发 生较大的塑性变形, 但未断裂, 一方面可延长地震反应周期, 另一方面通过 往复位移摩擦和阻尼来耗散地震能量, 并使支座实现有效复位, 以防止梁体 滑落, 确保震时大桥的通畅、 救灾。  (4) In the rare earthquake state: the support body is in the elastoplastic working stage, the nonlinear damping radiation has large plastic deformation, but it is not broken, on the one hand, it can prolong the seismic reaction cycle, on the other hand, through the reciprocating displacement friction and Damping to dissipate seismic energy and effectively reset the support to prevent the beam from slipping off, ensuring smooth and disaster relief of the bridge during the earthquake.
因此, 上述结构可根据桥型结构特点及当地的地质构造进行定制设计或 选择。  Therefore, the above structure can be custom designed or selected according to the characteristics of the bridge structure and the local geological structure.

Claims

权利要求书  Claim
~ 1、 一种非线性阻尼辐减隔震支座, 包括支座本体, 所述支座本体包括上座 板(1 )、 中衬板 (2) 和下座板(4), 中衬板(2)和下座板(4)之间夹设有功 能板 (6), 其特征在于: 还包括减隔震装置, 所述减隔震装置包括限位块 (5) 和非线性阻尼辐 (3), 所述下座板 (4) 的表面、 中衬板 (2) 的外侧固定均匀 设置有数个限位块 (5), 限位块 (5) 通过限位耗能螺栓与下座板 (4) 连接; 所述非线性阻尼辐 (3) 的一端与中衬板 (2) 固定连接, 另一端与下座板 (4) 固定连接, 非线性阻尼辐 (3) 包括均布绕于中衬板 (2)外侧的数个。  ~ 1. A nonlinear damping radiation isolation bearing, comprising a support body, the support body comprises an upper seat plate (1), a middle liner plate (2) and a lower seat plate (4), and a middle liner plate ( 2) A function board (6) is interposed between the lower seat plate (4) and the utility model. The utility model further comprises: a seismic isolation device, wherein the seismic isolation device comprises a limiting block (5) and a nonlinear damping spoke ( 3), the surface of the lower seat plate (4) and the outer side of the middle lining plate (2) are uniformly fixed with a plurality of limit blocks (5), and the limit block (5) passes the limit energy consuming bolt and the lower seat plate (4) connection; one end of the nonlinear damping spoke (3) is fixedly connected with the middle lining plate (2), the other end is fixedly connected with the lower seat plate (4), and the nonlinear damping spoke (3) includes a uniform winding Several of the outer sides of the middle lining plate (2).
2、 根据权利要求 1所述的非线性阻尼辐减隔震支座, 其特征在于: 所述支 座本体可以采用板式、 盆式或球型的结构型式。  2. The nonlinear damping radish isolation mount according to claim 1, wherein: the support body can be in the form of a plate, a basin or a ball.
3、 根据权利要求 1所述的非线性阻尼辐减隔震支座, 其特征在于: 所述功 能板 (6) 是高摩擦板, 限位块(5) 与中衬板 (2) 贴合紧密。  3. The nonlinear damped radish isolation bearing according to claim 1, wherein: the function board (6) is a high friction plate, and the limiting block (5) is fitted to the middle lining plate (2). close.
4、 根据权利要求 1或 3所述的非线性阻尼辐减隔震支座, 其特征在于: 所 述功能板(6)是滑动板,所述减隔震装置还包括下座板(4)上设置的垫块(7), 非线性阻尼辐(3)的一端与之联接,其中一对垫块(7)上设置有限位滑槽(8), 长方向与滑动方向一致的非线性阻尼辐 (4) 的端部卡设于限位滑槽 (8) 内, 滑动方向上的限位块 (5) 与中衬板 (2) 之间设有滑动间隔。  The non-linear damping anti-seismic bearing according to claim 1 or 3, wherein: the function board (6) is a sliding board, and the seismic isolation device further comprises a lower seat board (4) The upper block (7), one end of the nonlinear damping spoke (3) is coupled thereto, wherein a pair of spacers (7) are provided with a finite stop chute (8), and the longitudinal direction is consistent with the sliding direction. The end of the spoke (4) is clamped in the limit chute (8), and the sliding block (5) in the sliding direction and the middle lining plate (2) are provided with a sliding interval.
5、 根据权利要求 4所述的非线性阻尼辐减隔震支座, 其特征在于: 所述功 能板 (6) 是滑动板, 所述减隔震装置还包括下座板 (4) 上设置的垫块 (7), 垫块 (7) 上均设置有限位滑槽 (8), 非线性阻尼辐 (3) 的端部卡设于限位滑 槽 (8) 内, 限位块 (5) 与中衬板 (2) 之间设有滑动间隔。  The non-linear damping radish isolation bearing according to claim 4, wherein: the function board (6) is a sliding board, and the seismic isolation device further comprises a lower seat plate (4) The spacer (7) and the spacer (7) are provided with a finite slot (8), and the end of the nonlinear damping spoke (3) is clamped in the limiting slot (8), and the limiting block (5) ) There is a sliding interval between the middle lining plate (2).
6、 根据权利要求 5所述的非线性阻尼辐减隔震支座, 其特征在于: 所述限 位滑槽 (8) 的滑槽的倾斜方向与非线性阻尼辐 (3) 的滑移轨迹相一致。  The non-linear damping anti-seismic isolation bearing according to claim 5, characterized in that: the inclination direction of the chute of the limit chute (8) and the slip path of the nonlinear damping spoke (3) Consistent.
7、 根据权利要求 6所述的非线性阻尼辐减隔震支座, 其特征在于: 所述限 位块(5) 设置有四个, 相应的非线性阻尼辐 (3) 也设置有四个。  7. The nonlinear damping radish isolation bearing according to claim 6, wherein: the limiting block (5) is provided with four, and the corresponding nonlinear damping radiant (3) is also provided with four .
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