MATLAB优化工具箱在斜拉桥索力调整中的应用

Practical Methods of Optimization of Cable Force for Cable—stayed Bridge Based ON Matlab Optimization Toolbox

针对斜拉桥施工中出现的主梁标高线形误差和索力误差,采用Matlab优化工具箱,以结构内力和线形为控制条件,利用结构影响矩阵将调索问题变为有约束的二次规划数学模型,运用Matlab优化工具进行求解,并求到最终调索增量值。应用于实际工程证明该方法简单、有效,具有一定的工程实用价值。

Based on the Matlab optimization toolbox, this paper used internal force and geometry as control conditions, put forward practical method of adjusting of cable force for cable stayed bridge. The problem of construction of stage cable force for cable stayed bridge turned into the problem of constrained quadratic programming then the problem was solved by Matlab optimization toolbox. The engineering examples showed that the methods was simple, efficient and had practical values in engineering.