附加铅挤压阻尼器的自复位桥墩抗震性能分析

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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

Abstract：Inorder toreducetheseismic damageof theself-reseting pierandimprove its energydissipationcapacityakind of leadsqueezedamperisaddedtotheself-reseting piertoobtaintheexteralleadsqueezedamperself-reseting pier.Based on OpenSees platform model，models of self-reseting pierandself-reseting pier with lead squeeze damper are established. The accuracyofthe models isverifiedbypseudo-static test resultsof lead squeezedamperandself-reseting pierrespectively. Onthis basis，the seismic performanceof thetwopiermodels isanalyzedbypseudo-staticanddynamic time-historyanalysis. The results showthatthe yieldstifnessofself-resetingpierwith leadsqueee damperis8.32kN/mmunderthereciprocating loading condition；Inthe processof dynamic time historyanalysis，theself-reseting pier with lead squeze dampercan withstand 0.6g PGA earthquake；The self-reseting 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-reseting energy-consuming pier；securityand stability；OpenSee

0 引言

不同于钢筋混凝土桥墩的延性抗震设计理念，自复位桥墩是基于性能设计的新型结构体系。（剩余8472字）