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本文以上海市浦江大桥工程设计为背景,研究大跨度斜拉桥设计中,采用具有单边约束性质的辅助墩设计方案的分析方法。对于具有分段线性特性的多折点本构关系系统,通过引入一组控制变量,由参变量变分原理,将其归结为一个线性互补问题进行求解。本文分析方法对分段线性系统极为有效。研究结果,可以为斜拉桥工程设计与改进提供参考。
In this paper, based on the engineering design of Pujiang Bridge in Shanghai, the analysis method of the design scheme of auxiliary pier with unilateral constraint is studied in the design of long-span cable-stayed bridges. For a multi-vertex constitutive system with piecewise linear features, a group of control variables is introduced, which is reduced to a linear complementarity problem by the variable variational principle. The analysis method in this paper is very effective for piecewise linear systems. The research results can provide reference for the design and improvement of cable-stayed bridge engineering.