| 基于U.L列式的悬索桥施工过程模拟分析 |
| |
| 引用本文： | 杨孟刚,胡建华,陈政清.基于U.L列式的悬索桥施工过程模拟分析[J].湖南科技大学学报(自然科学版),2004,19(3):58-62. |
| |
| 作者姓名： | 杨孟刚 胡建华 陈政清 |
| |
| 作者单位： | 1. 中南大学,土木建筑学院,湖南,长沙,410075
2. 湖南省交通规划勘察设计院,湖南,长沙,410011 |
| |
| 摘 要： | 基于U.L列式的虚功增量方程,引入合理的位移模式,导出了悬链线索元切线刚度矩阵的显示表达式,进而建立起了分析悬索桥结构更为精细的几何非线性有限元法.运用该方法并结合悬索桥的施工特点,提出了一种精确模拟悬索桥施工全过程的迭代算法,可得出各施工阶段的施工理想状态.算例结果表明:此方法收敛快、精度较高.图5,表2,参10.
|
| 关 键 词： | 悬索桥 U.L列式 几何非线性 索元 施工过程模拟 |
| 文章编号： | 1672-9102(2004)03-0058-05 |
| 修稿时间： | 2004年4月3日 |
An analysis of construction stages simulation for suspension bridge based on U.L formulation |
| |
| YANG Meng-gang,HU Jian-hua,CHEN Zheng-qing.An analysis of construction stages simulation for suspension bridge based on U.L formulation[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2004,19(3):58-62. |
| |
| Authors: | YANG Meng-gang HU Jian-hua CHEN Zheng-qing |
| |
| Institution: | YANG Meng-gang~1,HU Jian-hua~2,CHEN Zheng-qing~1 |
| |
| Abstract: | Based on the virtual work increment equation of Updated Lagrangian (U.L) formulation,a fine finite element method for the geometrical nonlinear analysis of suspension bridge is established.In this method,the displacement functions chosen are logical;the stiffness matrixes of beam,truss and cable elements are educed with visible formulations.Then considering construction characteristic,a fine iterative method of simulating suspension bridge construction stages with which construction ideal states can be calculated is developed.A numerical example of suspension bridge which span is 1 385 m is given,which proves that this method converges quickly,and is more precise.5figs.,2tabs.,10refs. |
| |
| Keywords: | suspension bridge U L formulation geometrical nonlinear cable element construction stages simulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
