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| 大跨度桥梁颤振和抖振统一时程分析 | |
| 引用本文： | 曹映泓,项海帆,周颖.大跨度桥梁颤振和抖振统一时程分析[J].土木工程学报,2000,33(5):57-62. |
| 作者姓名： | 曹映泓 项海帆 周颖 |
| 作者单位： | 1. 广东省高速公路公司 2. 同济大学 3. 广州大学 |
| 摘 要： | 针对传统的桥梁风振分析中对颤振和抖振分析分别处理的现象,提出了统一的颤振和抖振时程分析方法,并且考虑了结构的几何非线性和气动非线性.该方法以非线性有限元的直接积分法为基础,在研究中具体解决了随机风速场的模拟、耦合自激力的时域计算和统一的颤抖振时程分析流程等关键问题.纠正了过去时程分析方法不能同时处理颤振和抖振的理论缺陷,在时域中统一了颤振和抖振的分析方法,并编制了可视化分析软件Nbuffet.该方法和软件对大跨度桥梁风振分析具有重要意义. |
| 关 键 词： | 桥梁 非线性 颤振 抖振 时程分析 |
| 修稿时间： | 1999年8月24日 |
COMBINED FLUTTER AND BUFFETING ANALYSIS IN TIME DOMAIN FOR LONG - SPAN BRIDGES |
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| Cao Yinghong,Xiang Haifan,Zhou Ying.COMBINED FLUTTER AND BUFFETING ANALYSIS IN TIME DOMAIN FOR LONG - SPAN BRIDGES[J].China Civil Engineering Journal,2000,33(5):57-62. | |
| Authors: | Cao Yinghong Xiang Haifan Zhou Ying |
| Affiliation: | Cao Yinghong (Guangdong Provincial Freeway Company) Xiang Haifan (Tongji University) Zhou Ying (Guang Zhou China Universty) |
| Abstract: | A method that combined analyze the flutter and buffeting in time - domain is proposed in the paper. We consider the structural geometrical nonlinearity and aero - nonlinearity. The proposed method is based on the time - history analysis of the finite element ,method. A simulation for a stochastic velocity of wind is adopted. The formula for calculating a coupled are excited force in the - domain is also conducted. A program for the combined analysis procedure is developed, The numerical results show that the Proposed method is correct, It is useful for the dynamic analysis and the dynamic control for a wind excited bridge. |
| Keywords: | bridge nonlinear flutter buffeting time- history analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |