大跨度斜拉管线桥地震反应分析
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
首先利用Newmark-β法和修正的Newton—Raphson法,提出并推导了一种求解几何非线性地震反应方程的方法。利用该方法对大跨度斜拉管线桥进行了线性和非线性地震响应分析。通过结果比较,得出一些有意义的结论:几何非线性效应对斜拉管线桥的地震反应分析影响很大,在分析中不能忽略,尤其是恒载初始内力。
At first, based on Newmark-β method and modified Newton-Raphson method, a new method is proposed to solve geometrically non-linear seismic response equation. The linear and the nonlinear seismic response analyses of long-span cable-stayed pipeline bridge are discussed with this method. Through comparing the results, it is illustrated that geometric non-linearity has a great influence on the seismic response. In the analysis, the geometric non-linearity can't be neg- lected, especially fOr the effects of initial force.
引文
[1]伍小平.大跨度斜拉管线桥几何非线性分析[D].[硕士学位论文]哈尔滨:中国地震局工程力学研究所,1999,8.
    [2]冯启民等.四川输气干线抗震安全性评价报告[R].国家地震局工程力学研究所研究报告,1995.
    [3] Nazmy, A S., Abdel-Ghaffar, A M. Nonlinear earthquake-response analysis of long-span cable-stayed bridge:Application[J]. Earthquake engineering & structural dynamics, 1990, 19:63-76.
    [4]华孝良,徐光辉.桥梁结构非线性分析[M].北京.人民交通出版社.1997.
    [5]范立础.桥梁抗震[M].上海:同济大学出版社,1997.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心