摘要
以实际工程为背景,针对高墩小半径曲线梁桥高墩和大曲率的特殊性,建立空间有限元模型进行模态分析、反应谱分析及两种地震波作用下的弹性时程分析,确定曲率半径和墩高对结构动力特性、反应谱分析振型数选取、结构地震响应及最不利输入方向的影响,为抗震设计提供参考。
Based on a practical project, finite element models are built against the particularity of high-pier and big-angularity of high-pier and small-radius curved bridge, which is used for modal, spectrum and linear elastic time-history analysis. Then the effects of radius-of-curvature and pier-height on dynamic characteristic of structure, mode selection of spectrum analysis, seismic response and worst-case input direction are determined to give some reference for the seismic design.
出处
《工程抗震与加固改造》
2008年第5期55-60,共6页
Earthquake Resistant Engineering and Retrofitting
基金
深圳市交通局项目“梧桐山立交高墩小半径曲线桥结构分析与研究”
关键词
高墩小半径曲线梁桥
最不利输入方向
弹性时程分析
high-pier and small-radius curved bridge
the worst-case input direction
linear elastic time-history analysis
