桥墩形式对不对称连续刚构桥地震响应的影响  

Influence of bridge pier form on seismic response of asymmetrical continuous rigid frame bridge

作　　者：肖章权 XIAO Zhang-quan(Changsha University of Science and Technology,Changsha,Hunan 410114,China)

机构地区：[1]长沙理工大学土木工程学院,湖南长沙410114

出　　处：《黑龙江交通科技》2018年第8期84-85,88,共3页Communications Science and Technology Heilongjiang

摘　　要：以云南省迪庆州维西县中路大桥为工程背景,研究不同的桥墩形式对不对称连续刚构桥动力特性的影响,用有限元软件Midas/Civil分别建立了桥梁上部结构不变,桥墩形式分别为双肢薄壁墩、单柱墩、V型墩的三个模型,分析其自振特性及地震响应情况,并对比分析其关键截面内力和位移情况。研究表明桥墩形式对自振周期影响较小,双肢薄壁墩下的桥梁结构在地震作用下的受力及位移最为合理。With the project of Zhong Lu Bridge in Diqing Prefecture,Yunnan Province Wei Xi County as the engineering background,The influence of different pier types on dynamic characteristics of unsymmetrical continuous rigid frame bridge is studied,The finite element software Midas/Civil respectively establishes the upper structure of the bridge,the pier forms are respectively three models of double thin-wall piers,single-pier and V-shaped piers,Analysis of its natural vibration characteristics and seismic response,The internal forces and displacements of the key sections were compared and analyzed. The study shows that the bridge piers have less influence on the natural vibration period and the stress and displacement of the bridge structure under the thin-walled piers with double limbs under the earthquake are the most reasonable.

关 键 词：不对称连续刚构桥 桥墩形式 动力特性 地震响应 

分 类 号：U442[建筑科学—桥梁与隧道工程]