水道港口2024，Vol.45Issue(2)：215-223,9.
大型钢桁架式渡槽结构地震响应研究
Study on seismic responses of large steel truss aqueduct structure
摘要
Abstract
This paper is focused on the seismic responses of an isolated large steel truss aqueduct structure under non-uniform seismic excitations.A finite element model of the aqueduct structure was established in ABAQUS based on the practical engineering,and the input method of non-uniform excitations and the simplified model of Friction Pendulum Bearing(FPB)were proposed.Moreover,the FPB model was illustrated to be accurate by experiments.Then the results were compared between numerical simulations under uniform and non-uniform excitations,with and without FPBs.The comparisons demonstrated that trusses directly above the mid-piers were the most vulnerable components;non-uniform excitations would significantly increased the dynamic responses of the aqueduct structure,especially at the hemilateral span;the FPBs installed at the top of mid-piers had a rather effective isolation effect,enhancing seismic safety of both trusses and piers.关键词
渡槽结构/非一致激励/摩擦摆隔震支座/抗震设计Key words
aqueduct structure/non-uniform excitation/FPB/seismic design分类
交通工程引用本文复制引用
王勋,汪俊,申瑞婷,邹炎,张宇亭,曲树盛..大型钢桁架式渡槽结构地震响应研究[J].水道港口,2024,45(2):215-223,9.基金项目
中央级公益性科研院所基本科研业务费专项资金资助项目(TKS190203) （TKS190203）
国家自然科学基金青年基金项目(52308401) （52308401）
