基于迭代分析的多塔悬索桥合理成桥状态确定方法  

Determination Method of Reasonable Finished Dead State Of Multi-Town Suspension Bridges Based on Iterative Analysis

作　　者：周云岗[1,2] 

机构地区：[1]同济大学建筑设计研究院(集团)有限公司,上海200092 [2]同济大学土木工程学院,上海200092

出　　处：《郑州大学学报（工学版）》2014年第1期99-103,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：国家自然科学基金资助项目(51008223)

摘　　要：基于传统悬索桥成桥状态计算方法,应用有限元法,提出了一种基于ANSYS有限元分析的确定多塔悬索桥主缆成桥线形的迭代算法.在此基础上,进行了3～6塔悬索桥试设计,针对试设计方案的合理成桥状态进行了算例分析,并与重力刚度理论计算结果进行了对比.算例表明,利用该方法可以准确地得到多塔悬索桥的成桥线形和内力.该方法不仅可以应用于平面缆索体系的成桥状态分析,同样也适用于空间缆索体系.In order to calculate the cable shape of multi-span suspension bridge under dead load, a 3-diomen tional analysis model is used and an iterative analysis method based on the finite element theory is proposed on the basis of analysis method for classical suspension bridge. It is simple to realize by using the finite element analysis soft ANSYS. Based on this, some trial designs, including three-town, four-town, five-town and sixtown suspension bridge, are carried out. Taking these bridges as examples, the proposed method is verified, and the results are compared with gravity stiff theory. By comparison, it is shown that the proposed method can achieve the cable shape and internal force under dead load and be shown of high accuracy, efficiency and con venience. This method can be used to calculate the cable shape with plan cable and spatial cable.

关 键 词：桥梁工程 多塔悬索桥 合理成桥状态 主缆线形 有限元法 几何非线性分析 

分 类 号：U448.225[建筑科学—桥梁与隧道工程]