结合影响矩阵的正装迭代法在优化施工索力中的应用

在斜拉桥施工控制中，为了达到设计成桥状态目标，需要对施工索力进行计算和调整。以国内弯道半径最小的斜拉桥为例，引入影响矩阵，通过迭代消除不闭合问题，从而可使施工索力得到优化，达到预先设定的成桥内力和线形。实例证明，该方法在斜拉桥施工控制中具有较好的精度和分析效率，可减少计算过程中受过多不确定因素的影响，对于解决类似的问题有较大的参考价值。

Construction Force Optimization Applying Forward-analysis Iterative Method Associating Influence Matrix

In the construction monitoring and controlling of cable-stayed bridge, in order to achieve the finished state that predefined, we always adjust the cable force. This paper gives the example using cable-stayed bend bridge with minimum radius in China, offsetting unclosed state by influence matrix and iterative method. The method can achieve optimization of cable force and the finished internal force and line shape as predefined. As is proved, this method can reduce the influence of uncertaint factors in computation because it has high accuracy and efficiency in cable bridge construction controlling, and can provide reference for similar construction.