预张预应力-承插式预制桥墩抗震试验数值仿真

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Abstract In order to make full use of the advantages of large construction tolerance of socket piers and the self-resetting ability of unbonded prestressed piers after earthquakes, and reduce the on-site prestressed tensioning construction, a hybrid connection prefabricated pier connected by socket connection and factory pretensioned unbonded prestressed reinforcement is proposed. The three-dimensional finite element model of the bridge pier was established by ABAQUS software. The accuracy of the numerical model was verified based on the quasi-static test results. The local damage, hysteretic behavior, skeleton curve, energy dissipation capacity, prestressed tendon tension, joint opening and other behaviors of the bridge pier were analyzed. The results show that the numerical model established in this paper can reproduce the quasi-static results well, and the force-displacement curve of the precast pier with hybrid connection is "flag type"; When the deviation rate of pier top is 5%, only transverse cracks appear on the pier column, without other obvious structural damage; When the socket depth is 0.4D, the cap has slight cracks, and when the socket depth is 0.7D, the cap can provide sufficient uplift resistance without obvious damage; There is stress concentration in the outer steel pipe and steel backing plate.

Key words： precast bridge pier quasi-static test numerical simulation seismic performance

Received: 13 April 2023 Published: 28 January 2024

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	Articles by authors
	A Junfeng1
	WANG Zhaohui1
	XU Kun1
	ZHANG Xiangyang2
	SONG Chengzhe3

Cite this article:

A Junfeng1,WANG Zhaohui1,XU Kun1, et al. Numerical simulation of seismic tests for pre-tensioned prestressing precastbridge columns with socket connection[J]. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(2): 254-263.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2024/V43/I2/254

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