Taking the Wuhekong Bridge as the engineering background,the method of optimization of cables tensions for PC cable-stayed bridges is set forth,based on the method of I.

• 以宿淮高速公路段五河口斜拉桥为工程背景,阐述采用索力对主梁应力的影响线法来优化PC斜拉桥施工索力的方法。