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文章提出了一种简便的计算影响矩阵的方法，可以方便地进行斜拉桥成桥恒载索力优化。
An efficient computational method of the influence matrix is proposed for cable force optimization so as to calculate the cable force of cable-stayed Bridges under dead loads easily.
斜拉桥时 ，确定成桥恒载初始索力值是一项重要而困难的任务 ，为此尝试用遗传算法来确定不同目标状态下的斜拉桥初始索力 。
Then trial method based on the forward analysis is used to determine the initial cable force of Xinyan cable-stayed bridge in the paper.
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