深水高墩大跨连续刚构桥抗震性能分析

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中图分类号：U448.23 文献标志码：A 文章编号：1005-8249（2025）02-0151-05

DOI：10.19860/j.cnki.issn1005-8249.2025.02.025

Abstract：Anumerical model of adeepwater high-pier，long-span continuous rigid-frame bridge was constructed using OpenSees finiteelementsoftware，withconsiderationgiventothenonlinearcharacteristicsofthebridgecomponentsand the impactof hydrodynamic actionin deepwater.Theresponsecharacteristicsof thebridgeunderseismicaction were investigated. Theresults indicate thatinadeepwaterenvironment，thedynamicresponseof theapproach bridgepiersdecreaseswith increasing waterdepth，whereasthemain bridge piersandtransitionpiers exhibitanincreasing rend.Thecolision frequency betweenbeamsandbetweenbridgeabutmentsshows nosignificantvariationunderdiferentwaterdepths.However，thecolision force at the expansion joints significantly increases with the rise in water depth.

Key words：：deep-water environment；hydrodynamicaction；nonlinear time-historyresponse analysis；colioneffect; continuous rigid -frame bridge

0 引言

随着我国交通基础设施建设的飞速发展，跨越深水区域的高墩桥梁数量逐年增加，而在深水环境下桥梁所承受的动水作用问题一直是工程界关注的热点。（剩余4787字）