深水高墩大跨連續(xù)剛構(gòu)橋抗震性能分析

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中圖分類號：U448.23 文獻標(biāo)志碼：A 文章編號：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

隨著我國交通基礎(chǔ)設(shè)施建設(shè)的飛速發(fā)展，跨越深水區(qū)域的高墩橋梁數(shù)量逐年增加，而在深水環(huán)境下橋梁所承受的動水作用問題一直是工程界關(guān)注的熱點。（剩余4787字）