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吴平川^1，2，段   楠¹，齐   虎³

 

 

(1.河北工程大学 土木工程学院，邯郸 056038；2.河北省装配式结构技术创新中心，邯郸 056000；3.河北省工程结构多灾害韧性与应急处置技术创新中心，三河 065201）

摘要：为了减轻自复位桥墩的抗震损伤，提高其耗能能力，在自复位桥墩的基础上附加一种铅挤压阻尼器，得到外置铅挤压阻尼器自复位桥墩。基于OpenSees平台建立了附加铅挤压阻尼器自复位桥墩模型，通过拟静力和动力时程分析对该模型进行抗震性能分析。结果表明:在往复加载条件下，附加铅挤压阻尼器的自复位桥墩的屈服刚度为8.32 kN/mm；在动力时程分析过程中,附加铅挤压阻尼器的自复位桥墩可承受0.6g PGA地震影响。附加铅挤压阻尼器的自复位桥墩表现出更强的抗震能力，并且可对桥墩内部预应力筋起到一定的保护作用。

关键词：抗震性能；桥梁抗震；自复位耗能桥墩；安全稳定；OpenSees

中图分类号：U443.22

文献标志码：A

文章编号：1005-8249（2025）06-0088-07

DOI：10.19860/j.cnki.issn1005-8249.2025-06-016

 

 

 

 

 

WU Pingchuan^1,2,DUAN Nan¹,QI Hu³

 

 

(1.College of Civil Engineering,Hebei University of Technology,Handan 056038,China；

 

2.Hebei Technology Innovation Center for Prefabricated Structure,Handan 056000,China；

 

3.Hebei Technology Innovation Center for Multi-Hazard Resilience and Emergency

 

Handling of Engineering Structures,Sanhe 065201,China)

 

Abstract：In order to reduce the seismic damage of the self-resetting pier and improve its energy dissipation capacity,a kind of lead squeeze damper is added to the self-resetting pier to obtain the external lead squeeze damper self-resetting pier.Based on OpenSees platform model,models of self-resetting pier and self-resetting pier with lead squeeze damper are established.The accuracy of the models is verified by pseudo-static test results of lead squeeze damper and self-resetting pier respectively.On this basis,the seismic performance of the two pier models is analyzed by pseudo-static and dynamic time-history analysis.The results show that the yield stiffness of self-resetting pier with lead squeeze damper is 8.32 kN/mm under the reciprocating loading condition;In the process of dynamic time history analysis,the self-resetting pier with lead squeeze damper can withstand 0.6g PGA earthquake;The self-resetting pier with lead squeeze damper has stronger seismic ability and can protect the prestressed tendons inside the pier to some degree.

 

Key words：seismic behavior;aseismic of bridge;self-resetting energy-consuming pier;security and stability;OpenSees

 

基金项目：河北省自然科学基金资助项目(E2020402079)。

作者简介：吴平川(1979—)，男，博士，教授，研究方向:结构抗震与加固。

通信作者：段  楠(2000—)，男，硕士研究生，研究方向:结构抗震。

收稿日期：2024-08-12