| 基于虚位移原理的自锚式悬索桥实用计算方法 |
| |
| 引用本文： | 匡书谊,唐冕,周智辉.基于虚位移原理的自锚式悬索桥实用计算方法[J].铁道科学与工程学报,2010,7(4). |
| |
| 作者姓名： | 匡书谊 唐冕 周智辉 |
| |
| 作者单位： | 江西赣江职业技术学院,建筑工程学院,江西,南昌,330108;中南大学,土木建筑学院,湖南,长沙,410075 |
| |
| 基金项目： | 国家自然科学基金资助项目(50908232) |
| |
| 摘 要： | 基于挠度理论和虚位移原理,分析自锚式悬索桥各组成部分的受力状态,分别导出在各种荷载作用下以三角级数法表示的加劲梁挠度内力和变形公式,并结合Newton-Simpson迭代法来确定活载索力,提出了计算自锚式悬索桥加劲梁内力及变形的实用计算方法,并编制相应的计算分析程序.以长沙湘江三汊矶大桥(主跨328 m的双塔五跨自锚式悬索桥)为例,通过与有限位移理论的计算结果相比较,证明该方法简单、方便,计算结果准确可靠;如果所设计的结构吊索分布比较均匀,挠度理论与有限元的计算结果比较一致;这说明可以采用本方法来研究自锚式悬索桥的设计参数对结构内力与变形的影响,尤其是在方案设计阶段,可以用于很方便地选定结构主要设计参数.
|
| 关 键 词： | 悬索桥 自锚式 虚位移原理 |
The practical calculation method of self-anchored suspension bridge based on the virtual displacements principle |
| |
| KUANG Shu-yi
,
TANG Mian
,
ZHOU Zhi-hui.The practical calculation method of self-anchored suspension bridge based on the virtual displacements principle[J].Journal of Railway Science and Engineering,2010,7(4). |
| |
| Authors: | KUANG Shu-yi TANG Mian ZHOU Zhi-hui |
| |
| Affiliation: | KUANG Shu-yi1,TANG Mian1,ZHOU Zhi-hui2(1.Architectural engineering institute,Jiangxi Ganjiang Vocation College,Nanchang 330108,China,2.School of Civil , Architectural Engineering,Central South University,Changsha 410075,China) |
| |
| Abstract: | Based on the deflection theory and the virtual displacement principle,the stress state of different components of the self-anchored suspension bridge was analyzed;the formulas denoted by trigonometric series for computing the internal force and deformation of the stiffened girder,were derived under a variety of loads respectively,and the cable force was determined under the live load combined with Newton-Simpson iteration approach.A practical method to calculate the internal force and deformation of the sti... |
| |
| Keywords: | suspension bridge self-anchored principle of virtual displacement |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
