中小跨径斜拉桥索力优化的“二阶段法”

"Two Stage Method" of Cable Tension Optimization for Short/Medium Span Cable-Stayed Bridges

以影响矩阵理论为基础,以有约束优化法及正装分析法为核心,提出中小跨径斜拉桥索力优化"二阶段法",并结合算例加以验证.该方法省去倒装分析过程,可以快速求出合理成桥与施工索力,对中小跨径斜拉桥成桥及施工阶段分析的索力优化计算具有实用意义。

Based on the theory of Influence Matrix, with the constraint optimization and the positive disposition analyses as its core, the ＂Two Stage Method＂ which is used for the cable tension optimization on short or medium span cable-stayed bridges is proposed. And then, an example is used to verify the correctness of this method. It can get the reasonable cable tensions without inverse analysis. This method can accelerate the solution procedure of cable tension optimization and it would be Useful in the analysis of both the finished dead state and construction stage in short / medium span cable-stayed bridges,