| 悬索桥理想恒载状态的计算方法研究 |
| |
| 引用本文： | 罗喜恒,肖汝诚,项海帆.悬索桥理想恒载状态的计算方法研究[J].桥梁建设,2008(4). |
| |
| 作者姓名： | 罗喜恒 肖汝诚 项海帆 |
| |
| 作者单位： | 1. 同济大学建筑设计研究院,上海,200092
2. 同济大学桥梁工程系,上海,200092 |
| |
| 摘 要： | 悬索桥施工前,必须精确确定主缆和吊索等的无应力长度,而这些参数都需要通过理想恒载状态的求解来得到.为了克服已有方法的不足之处,首先完善了悬索桥的有限元模拟,包括基于悬索精确解析解的、可考虑节间荷载的索单元,能方便模拟各种鞍座及其顶推的鞍座-索单元,采用CR列式梁单元等.然后提出了将有限元法与数值解析法有机地结合起来的理想恒载状态求解方法.通过对润扬大桥的分析表明,本方法是精确而有效的,可用于悬索桥施工过程的精确分析和施工方案的优化.
|
| 关 键 词： | 悬索桥 理想恒载状态 有限元法 数值解析法 |
Study of Calculation Methods for Ideal Dead Load State of Suspension Bridges |
| |
| LUO Xi-heng,XIAO Ru-cheng,XIANG Hai-fan.Study of Calculation Methods for Ideal Dead Load State of Suspension Bridges[J].Bridge Construction,2008(4). |
| |
| Authors: | LUO Xi-heng XIAO Ru-cheng XIANG Hai-fan |
| |
| Institution: | LUO Xi-heng1,XIAO Ru-cheng2,XIANG Hai-fan2(1.Architectural Design & Research Institute,Tongji University,Shanghai 200092,China,2.Department of Bridge Engineering,China) |
| |
| Abstract: | Before suspension bridges are constructed,the parameters like the unstressed length of main cables and suspenders have to be precisely determined and these parameters need to be obtained by solving the ideal dead load state of the bridges.To make up the deficiency of the existing calculation methods for obtaining the parameters,the authors in this paper firstly improve the finite element modeling for the bridges,including the cable element that is based on the precise analytical solution of suspension cable... |
| |
| Keywords: | suspension bridge ideal dead load state finite element method numerical analytical method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
