斜拉桥索力优化实用方法

合理确定成桥索力是斜拉桥设计中一项十分重要的工作,而目前设计实践中对此存在不同认识.对现有斜拉桥索力优化理论进行评述,认为索力优化的影响矩阵法在理论上最为完善.为便于在设计实践中推广,基于索力优化的影响矩阵法原理,提出一种斜拉桥成桥索力优化的实用方法,并从理论上加以证明,实践上得到检验.实用方法可以方便地进行斜拉桥成桥索力优化,并能实现多种优化方案比选,尤其适用于初步设计阶段.

Practical Method of Optimization of Cable Tensions for Cable-stayed Bridges

It's very important in the design of cable-stayed bridges to find out the optimum cable tensions under dead loads and opinions diverge from each other. After a careful review of existing methods of optimization of cable tensions for cable-stayed bridges, the authors think that influence matrix method is perfect theoretically. In order to popularize it in design practice, a practical method of optimization of cable tensions was developed on the basis of the theory of influence matrix method. This practical method was not only proved theoretically but also validated practically. It can be used easily and multi-scheme selecting is realized. It is suitable for preliminary design especially.