| 基于近断层地震LRB桥梁支座屈服力优化 |
| |
| 引用本文： | 李黎,胡紫东,聂肃非,龙晓鸿.基于近断层地震LRB桥梁支座屈服力优化[J].振动与冲击,2011,30(6):134-138. |
| |
| 作者姓名： | 李黎 胡紫东 聂肃非 龙晓鸿 |
| |
| 作者单位： | 1.华中科技大学土木工程与力学学院 湖北 武汉 430074；2. 华中科技大学控制结构湖北省重点实验室湖北 武汉 430074 |
| |
| 摘 要： | 在近断层地震作用下，LRB桥梁的响应较大，为了降低LRB支座相对位移过大给桥梁结构带来的不利影响，对LRB支座的屈服力进行了优化研究。选用了典型的近断层地震波，对具有不同力学特性和支座参数的LRB桥梁进行了考虑隔震支座非线性的地震时程分析。根据LRB桥梁的响应结果，提出了以桥面加速度、墩顶位移、支座相对位移和铅芯直径为变量的LRB桥梁的整体响应函数。通过研究发现，可以优化LRB的屈服力，使得桥梁的整体响应降低，且支座的最优屈服力与桥墩频率相关
|
| 关 键 词： | 近断层地震 LRB桥梁 整体响应函数 屈服力优化 |
| 收稿时间： | 2010-2-5 |
| 修稿时间： | 2010-5-28 |
Optimum yield strength of LRB for isolated bridges under near-fault earthquake |
| |
| LI Li,HU Zi-dong,NIE Sui-fei,LONG Xiao-hong.Optimum yield strength of LRB for isolated bridges under near-fault earthquake[J].Journal of Vibration and Shock,2011,30(6):134-138. |
| |
| Authors: | LI Li HU Zi-dong NIE Sui-fei LONG Xiao-hong |
| |
| Affiliation: | 1.School of Civil Engineering & Mechanics, Huazhong University of Science and Technology, Wuhan, 430074, China;2.Huibei Key Laboratory of Control Structure, Huazhong University of Science and Technology, Wuhan, 430074,China |
| |
| Abstract: | Large responses usually appear on isolated bridges with LRB(Lead-Rubber-Bearings) under near-fault earthquake and the isolated bridge may perform poorly because of excessively large deformation of LRB,so it is necessary to study the optimum yield strength of LRB.For this purpose,non-linear time history analyses in accordance with different mechanical properties and bearing parameters of isolated bridges were performed.According to the results of LRB bridge's responses,the system response function with accel... |
| |
| Keywords: | near-fault earthquake isolated bridge system response function yield strength optimziation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《振动与冲击》浏览原始摘要信息 |
|
点击此处可从《振动与冲击》下载全文 |
|
