Self-resetting damping arch foot device
A self-resetting and arch foot technology, which is applied to arch bridges, bridge parts, bridge forms, etc., can solve problems such as high repair costs and structural damage, and achieve the effects of high energy consumption, good ductility, and overall structure protection
Pending Publication Date: 2019-06-21
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology
[0003] Most of the existing shock-absorbing components improve the seismic performance of the overall structure by increasing the stiffness and strength of the components, which will lead to irreversible damage to the structure and high repair costs
Method used
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Embodiment 1
[0025] This embodiment discloses a self-resetting shock-absorbing arch foot device, which includes an arch bridge body 1 , an arch foot 2 and an abutment 3 . Both ends of the arch body 1 are provided with abutments 3 , and an arch foot 2 is connected between each abutment 3 and the arch body 1 . The arch foot 2 includes a buckling restraint support 201 , several prestressed tendons 202 , a spring 203 , an outer sleeve 204 , several connecting nodes 205 and an energy-dissipating steel plate frame 206 . One of the connection nodes 205 is connected to the bridge body 1 , and the other connection node 205 is connected to the abutment 3 . The connecting nodes 205 are connected with buckling-constrained supports 201, several prestressed tendons 202, springs 203 and outer sleeves 204, and several said prestressed tendons 202 are arranged at intervals around the buckling-constrained supports 201, and several said prestressed tendons A spring 203 is nested on the periphery of 202, and...
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The invention discloses a self-resetting damping arch foot device, relates to the field of bridges, and aims to improve the stability and the seismic performance of arch feet of an arch bridge and prolong the service life thereof. In order to achieve the purposes of the invention, the invention adopts such a technical solution as follows: the self-resetting damping arch foot device comprises an arch bridge body, arch feet and bridge abutments, wherein the bridge abutments are arranged at the two ends of the arch bridge body; the arch foot is connected between each bridge abutment and the archbridge body; each arch foot comprises a buckling constraint support, a plurality of prestressed steel bars, a spring and an energy-consuming steel plate frame; the plurality of prestressed steel barsare arranged on the outer surface of the buckling constraint support; the spring is nested into the peripheries of the plurality of the prestressed steel bars; the energy-consuming steel plate frame is nested into the periphery of the spring. When an earthquake occurs, the buckling constraint support and the energy-consuming steel plate frame sequentially consume a force generated by the earthquake; due to the actions of the prestressed steel bars and the spring, a main body structure is in an elastic range, so that the self-resetting device is formed, and the seismic capacity of a core support is improved.
Description
technical field [0001] The invention relates to the field of bridges, in particular to a self-resetting shock-absorbing arch foot device. Background technique [0002] Arch bridge is a kind of bridge construction. Arch bridge is beautiful in appearance, convenient in life and transportation, and spreads all over the place. However, the connection between the arch foot and the abutment of the arch bridge is a fixed connection, which is not conducive to the earthquake resistance of the structure. Shock-absorbing components need to be installed between the arch foot and the abutment. [0003] Most of the existing shock-absorbing components improve the seismic performance of the overall structure by increasing the stiffness and strength of the components, which will lead to irreversible damage to the structure and high repair costs. In order to enable the arch bridge to be repaired quickly after the earthquake or can be used normally without repair, a self-resetting shock abso...
Claims
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IPC IPC(8): E01D4/00E01D19/00E01D19/02
Inventor 金双双白久林李盈开周建庭
Owner CHONGQING JIAOTONG UNIVERSITY