摘要
通过对规则隔震桥梁的简化模型研究,提出了此简化模型在地震中的非线性振动特性可以用两个线性单自由度的动力特性来描述,通过算例的非线性地震时程分析,得到其结构加速度时程响应,利用时频分析法[1]证明了这个简化分析方法的正确性。
Study of the simplified model of seismic-isolation regular bridge show nonlinear vibration characteristics of this simplified model can be described by two linear single-degress-of-freedom dynamic characters. Based upon time-history analysis of seismic responses of one calculation example the time-history response of acceleration of this structure is obtained. In the end the correctness of this simplified analysis method is verified by time-frequency analysis method.
出处
《山西建筑》
2008年第9期94-95,共2页
Shanxi Architecture
关键词
隔震支座
规则隔震桥梁
短时傅立叶变换
时频分析
isolation bearing, seismic-isolation regular bridge, short-time Fourier transform, time-frequency analysis
