人工合成地震波在桥基勘探中的应用
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摘要
采用反应谱方法和动态时程法对荆州长江大桥PC斜拉桥抗震性能进行了分析研究。提出了人工合成地震波计算模型,并介绍了地震波人工拟合步骤应用于荆州长江大桥抗震性能勘探设计中,并绘制出了所拟合的加速度时程和对目标反应谱的拟合图。
Through analyzing the structure of the Jingzhou OU Yangtze River Bridge,the paper has drawnout the necessity of research for the shock-resistant performance of the bridge's structure.This article analyzed the shock-resistant performance of the Jingzhou Yangtze River PC cable-stayed bridge with the methods of response spectrum and dynamic time history.Furthermore,it put forward a computing model of the trigonometric series nestification artificially synthesized accelerated time history,and introduced the detailed steps of artificial fitting seismic wave,used in the Jingzhou Yangtze River Bridge,then draw out the fitted acceleration time history and the fitting fig of the objective response spectrum.
Through analyzing the structure of the Jingzhou OU Yangtze River Bridge,the paper has drawnout the necessity of research for the shock-resistant performance of the bridge's structure.This article analyzed the shock-resistant performance of the Jingzhou Yangtze River PC cable-stayed bridge with the methods of response spectrum and dynamic time history.Furthermore,it put forward a computing model of the trigonometric series nestification artificially synthesized accelerated time history,and introduced the detailed steps of artificial fitting seismic wave,used in the Jingzhou Yangtze River Bridge,then draw out the fitted acceleration time history and the fitting fig of the objective response spectrum.
引文
[1]耿淑伟.抗震设计规范中地震作用的规定[D].哈尔滨:中国地震局工程力学研究所,2005.
[2]高丽霞.加速度均方根地震动统计研究[D].北京:北京工业大学,2006.
[3]董娣.地震动特性的影响因素与不确定性分析[D].北京:北京工业大学,2006.
[4]姚兰予,聂永安.利用测震台网记录获得加速度波形的方法研究[J].中国地震,2004,20(1):39-46.
[2]高丽霞.加速度均方根地震动统计研究[D].北京:北京工业大学,2006.
[3]董娣.地震动特性的影响因素与不确定性分析[D].北京:北京工业大学,2006.
[4]姚兰予,聂永安.利用测震台网记录获得加速度波形的方法研究[J].中国地震,2004,20(1):39-46.
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