CN-116290442-B - Friction pendulum support capable of resisting pulling-up force

CN116290442BCN 116290442 BCN116290442 BCN 116290442BCN-116290442-B

Abstract

The invention relates to the technical field of building seismic reduction and isolation engineering, and discloses a friction pendulum support capable of resisting an upward pulling force, which comprises a lining plate unit, a support unit, a reset unit and a limit unit, wherein the lining plate unit comprises a steel lining ball plate and pressure-bearing sliding plates symmetrically arranged on the upper side wall and the lower side wall of the steel lining ball plate; the friction pendulum support dissipates seismic energy through conversion of kinetic energy, potential energy and heat energy in the friction sliding process, has compact integral structure and high bearing capacity, can reliably bear and transmit force when the bridge or building upper structure generates forces in different directions, and ensures that any directional displacement can resist the pulling force.

Inventors

LI KUN
CHEN YONGJIA
ZHENG KANGPING
TANG KAIFENG
LIU ZHIDONG
CHEN JINGPING
LU JINZHU
QIU JIHAO
LIU WEIPING
WEI MINGJIAN

Assignees

柳州东方工程橡胶制品有限公司

Dates

Publication Date: 20260505
Application Date: 20230321

Claims (2)

1. A friction pendulum support capable of resisting pull-up force is characterized by comprising, The lining plate unit (100) comprises a steel lining ball plate (101) and pressure-bearing sliding plates (102) symmetrically arranged on the upper side wall and the lower side wall of the steel lining ball plate (101); The support unit (200) comprises an upper support (201) and a lower support (202) which are oppositely arranged, and a clamping ring assembly (203) which is arranged on the side wall of the opposite surfaces of the upper support (201) and the lower support (202); A resetting unit (300) comprising flange plates (301) respectively arranged on the side walls of the upper support (201) and the lower support (202) and resetting pieces (302) connected between the opposite flange plates (301), and The limiting unit (400) is arranged between the steel lining ball plate (101) and the clamping ring assembly (203) and comprises a clamping ring assembly (401), a pull ring assembly (402) and a pull plate assembly (403) which are sequentially connected, and the pull plate assembly (403) is connected with the clamping ring assembly (203); The flange plates (301) are distributed on the edge side walls of the upper support (201) and the lower support (202) at equal intervals; The reset piece (302) comprises a damping piece (302 a), connecting plates (302 b) symmetrically connected to two ends of the damping piece (302 a), and a reset spring (302 c) sleeved outside the damping piece (302 a), wherein two ends of the reset spring (302 c) are respectively connected to the side walls of the two connecting plates (302 b); The upper end surface and the lower end surface of the steel lining ball plate (101) are symmetrically provided with a circular groove (101 a) and a circumferential step (101 b), and the circumferential step (101 b) is positioned at the outer side of the circular groove (101 a); the pressure-bearing sliding plate (102) can be embedded in the circular groove (101 a) in a matching manner; the end face of the annular step (101 b) is provided with a first threaded hole (101 b-1); The compression ring assembly (401) comprises a compression ring (401 a) capable of being matched and placed on the annular step (101 b), a first steel ring (401 b) arranged on the side wall of the lower end of the compression ring (401 a), and a first screw (401 c), wherein the first screw (401 c) can be matched and connected in the first threaded hole (101 b-1); the pull ring assembly (402) comprises a pull ring (402 a) and a first slider ring (402 b) and a stainless steel bar (402 c) arranged on the side wall of the pull ring (402 a); the pull ring (402 a) is annular, a placement annular groove (402 a-1) is formed in the top surface of the pull ring, and the first slide plate ring (402 b) is matched and placed in the placement annular groove (402 a-1); the bottom surface of the side wall of the ring body of the pull ring (402 a) is provided with an arc surface (H); the stainless steel bar (402 c) is matched and arranged at the cambered surface (H); The pull plate assembly (403) comprises a pull plate (403 a), and a slide bar (403 b) and a second steel ring (403 c) which are arranged on the side wall of the pull plate (403 a); The pulling plate (403 a) is in a round table shape, the middle part of the pulling plate is provided with an S-shaped penetrating cavity (403 a-1), a placing table (403 a-2) is arranged at the parallel edges of two sides of the inner cavity of the penetrating cavity (403 a-1), and a limiting arc groove (403 a-3) is arranged in the middle part of the placing table (403 a-2); The sliding strip (403 b) is matched and placed on the limit arc groove (403 a-3); The second steel ring (403 c) is matched and arranged on the bottom side wall of the pull plate (403 a); The compression ring (401 a) can be matched and placed on a placement ring groove (402 a-1) of the pull ring (402 a), and the first steel ring (401 b) and the first slide plate ring (402 b) are in fit contact to form a first plane revolute pair (P1); The pull ring (402 a) can be matched with the surface of the limiting arc groove (403 a-3) in the through cavity (403 a-1) through the cambered surface (H) at the bottom, and the stainless steel bar (402 c) is in fit contact with the slide bar (403 b) to form a guide sliding pair (D); The upper support (201) and the lower support (202) have the same structure; A spherical concave surface (202 a) is formed in the middle of the bottom end of the lower support (202), an annular boss (202 b) is arranged at the edge of the spherical concave surface (202 a), and a second threaded hole (202 b-1) is formed in the end face of the annular boss (202 b); The clamping ring assembly (203) comprises a clamping ring (203 a), a second sliding plate ring (203 b) arranged on the side wall of the clamping ring (203 a), and a second screw (203 c), wherein the second screw (203 c) can be connected in the second threaded hole (202 b-1) in a matching mode.
2. The friction pendulum support capable of resisting upward pulling force according to claim 1, wherein the second slide plate ring (203 b) and the second steel ring (403 c) are in abutting contact to form a second plane revolute pair (P2); and one end side wall of the pressure-bearing sliding plate (102), which is far away from the steel lining ball plate (101), is in sliding contact with the ball concave surface (202 a) to form a spherical sliding pair (Q).

Description

Friction pendulum support capable of resisting pulling-up force Technical Field The invention relates to the technical field of building seismic reduction and isolation engineering, in particular to a friction pendulum support capable of resisting pull-up force. Background The friction pendulum type support is widely applied to the shock absorption and insulation of the existing building and bridge engineering. The conventional friction pendulum support is characterized in that the spherical surface of the biconvex spherical crown is matched between the upper support plate and the lower support plate, all parts are mutually attached and rotated and mutually slide, so that the continuous bearing, displacement and shock absorption and insulation functions of the support are realized. When an earthquake occurs, the support can slide in all directions, the self-vibration period of the upper structure is prolonged by using a simple pendulum mechanism, so that the transmission of earthquake force to the upper structure is reduced, part of earthquake energy is dissipated by using friction damping during sliding, the earthquake reaction of the structure is reduced, and the safety of the structure is protected. The conventional friction pendulum base generally adopts a compound pendulum form, and both the upper surface and the lower surface have sliding displacement, so that compared with a simple pendulum structure in which the upper plate and the lower plate are arranged by utilizing a structure with double sliding and sliding displacement, the friction pendulum base has the advantages of smaller total projection area, lighter compound pendulum form structure and better realization of large displacement performance. However, in an earthquake, there is usually an upward pulling force, especially on a suspension lock bridge, a diagonal cable bridge and a multi-story building, displacement and upward pulling may be generated at the same time, but a conventional friction pendulum support cannot meet the working condition, further, the existing friction pendulum support only resets under the action of gravity after swinging, but after friction loss is generated on the surface of a steel lining ball plate, the reset gravity center of the friction pendulum support generates a certain offset, so that the safety of a bridge and a building may be gradually compromised. Disclosure of Invention This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application. The present invention has been made in view of the above-mentioned problems with existing earthquake medium-high rise buildings and bridges. Therefore, the invention aims to provide a friction pendulum support capable of resisting a pulling-up force, which is simple in structure, economical and practical, can bear the weight, can resist the pulling-up force in any designed displacement and can maintain friction reset, so as to overcome the defects in the prior art. The friction pendulum support comprises a lining plate unit, a support unit, a reset unit and a limit unit, wherein the lining plate unit comprises a steel lining ball plate and pressure-bearing sliding plates symmetrically arranged on the upper side wall and the lower side wall of the steel lining ball plate, the support unit comprises an upper support and a lower support which are oppositely arranged, and a clamping ring assembly arranged on the side walls of the opposite surfaces of the upper support and the lower support, the reset unit comprises a flange plate respectively arranged on the side walls of the upper support and the lower support and a reset piece connected between the opposite flange plates, and the limit unit is arranged between the steel lining ball plate and the clamping ring assembly and comprises a compression ring assembly, a pull ring assembly and a pull plate assembly which are sequentially connected, and the pull plate assembly is connected with the clamping ring assembly. The friction pendulum support capable of resisting the pulling-up force is characterized in that the flange plates are distributed on the edge side walls of the upper support and the lower support at equal intervals, the reset piece comprises a damping piece, connecting plates symmetrically connected to two ends of the damping piece, and reset springs sleeved outside the damping piece, and two ends of each reset spring are respectively connected to the side walls of the two connecting plates. The friction pendulum support capable of resisting the pulling-up force is characterized in that the upper end face and the lower end face of the steel lining ball plate are symmetrically provided with circular grooves and annular steps, the annular ste