大跨度桥梁桥墩延性抗震结构响应数值仿真  

Numerical Simulation of Ductile Seismic Response of Long-Span Bridge Piers

作　　者：艾建杰 张玉苹 AI Jian-jie;ZHANG Yu-ping(City College,Southwest University of Science and Technology,Mianyang Sichuan 621000,China)

机构地区：[1]西南科技大学城市学院,四川绵阳621000

出　　处：《计算机仿真》2023年第6期121-124,224,共5页Computer Simulation

基　　金：西南科技大学城市学院2020年校级科研项目(2021XJKY05)。

摘　　要：建设于广阔水域或者峡谷要塞的大跨度桥梁具有较为重要的工程地位,对其它桥梁建设存在指导意义,因此研究大跨度桥梁桥墩延性抗震结构响应数值仿真方法,以四川省内某大跨度桥梁工程作为研究对象,运用桥梁分析专门有限元软件Midas Civil构建有限元模型,以其它经影响因素条件不变为前提,分析轴压比、混凝土强度、纵筋强度等差异以及是否使用阻尼器等干扰因素影响下大跨度桥梁桥墩延性抗震结构响应变化情况。经过数值仿真分析结果显示,轴压比低于0.3,混凝土强度和纵筋强度较均衡,同时使用阻尼器,能够保证大跨度桥梁桥墩延性抗震结构响应效果较好。This paper studies the numerical simulation method of the ductile seismic structural response of long-span bridge piers owing to the important engineering status of long-span bridges.The bridge analysis finite element software MIDAS civil was utilized to build the finite element model.Under the condition that other influencing factors remained unchanged,the axial compression ratio,concrete strength and longitudinal reinforcement strength were sys-tematically analyzed,and the influence of dampers on the response of ductile seismic structures of long-span bridge piers was also discussed in detail.The simulation results show that the concrete strength and longitudinal reinforce-ment strength have the best balance(the axial compression ratio is less than 0.3).Concurrently,the application of dampers makes the ductile seismic structure of long-span bridge piers have an excellent response effect.

关 键 词：大跨度桥梁 桥墩 延性抗震 结构响应 有限元 

分 类 号：TU352[建筑科学—结构工程]