工程研究-跨学科视野中的工程2018，Vol.10Issue(2)：192-198,7.DOI:10.3724/SP.J.1224.2018.00192
考虑行波效应的双薄壁连续刚构桥地震响应分析
Seismic Response of Double Thin–Wall Continuous Rigid Frame Bridge Considering Traveling Wave Effect
摘要
Abstract
A double thin-wall continuous rigid frame bridge with a span of (68 + 116 + 68)m is selected as the engineering background in this study. A full-bridge finite element model is established with the assistance of MIDAS software to analyze the seismic performance of double thin–wall continuous rigid frame bridge. The multi-support seismic excitation is applied to consider the traveling wave effect. The results show that the self-vibration period of the double-thin continuous rigid frame bridge decreases with the increase of the dou-ble-limb spacing. The seismic responses obtained by considering travelling effect tend to those obtained without considering travelling effect when the apparent velocity increases. The seismic responses of the substructure are reduced by considering the traveling wave effect, while the traveling wave effect has significant effect on the su-perstructure. The axial force of the girder with considering the traveling wave effect is 3 times greater than that with uniform excitation. Therefore, the preliminary design or seismic analysis of the double thin-walled structure should focus on the influence of the traveling wave effect on the superstructure.关键词
行波效应/双薄壁桥墩/肢间距/地震响应Key words
traveling wave effect/double-thin wall pier/double-limb spacing/seismic response分类
交通运输引用本文复制引用
马华军,鲁锦华,郝勇,王宇轩..考虑行波效应的双薄壁连续刚构桥地震响应分析[J].工程研究-跨学科视野中的工程,2018,10(2):192-198,7.基金项目
国家自然科学基金(51268027) （51268027）
