北京交通大学学报2013，Vol.37Issue(1)：157-161,5.
多跨简支梁桥平稳地震响应分析
Stationary seismic analysis of multi-span simply supported girder bridge
马青青 1张鸿儒1
作者信息
- 1. 北京交通大学土木建筑工程学院,北京100044
- 折叠
摘要
Abstract
Based on the unit impulse function principle, the frequency response function equation of longitudinal vibration for simply supported beam bridge is established. According to the transfer matrix principle, the calculation method of the dynamic frequency response function for the vertical displacement and axial force of multi-span simply supported beam bridge is proposed. Taking six cross-simply supported girder bridge as an example, the maximum displacement and axial force are solved, and the corresponding Fourier amplitude spectrum under pulse loads is provided. The calculation results show that the mid-pan displacement in the middle of the bridge is bigger than that in the side of the bridge, but the axial force shows an inverse tendency. The changes of the amplitude spectrums are consistent with the displacement and axial force respectively.关键词
多跨简支梁桥/单位脉冲函数/频响函数/傅里叶变换Key words
multi-span simply supported bridge/ unit pulse function/ frequency response function/ Fourier transform分类
交通工程引用本文复制引用
马青青,张鸿儒..多跨简支梁桥平稳地震响应分析[J].北京交通大学学报,2013,37(1):157-161,5.
