摘要
简单介绍了目前桥梁抗震中存在的关于阻尼的一些问题以及瑞利阻尼理论,以龙潭河大桥为例,建立了有限元模型,计算分析其动力特性获得桥梁结构的振型和频率,在此基础上求解出了Aplha和Beta。
Some problems about damping existed in seismic design of bridges at present and Rayleigh damping theory are briefly introduced.Taken Longtan river Bridge as example finite element model is built.The structural mode and frequency of this bridge are obtained through calculation analysis of its dynamic characteristics and based upon this the solutions of Aplha and Beta are found in this end.
出处
《山西建筑》
2010年第2期339-340,共2页
Shanxi Architecture
关键词
大跨桥梁
地震反应分析
阻尼
瑞利阻尼
large-span bridge
seismic response analysis
damping
Rayleigh damping
