摘要
斜拉桥合龙后,实际的索力与设计目标值存在一定差别,需要进行索力优化。提出一种采用影响矩阵,以满足斜拉桥关键截面可行域为约束条件,采用最小二乘法对合龙后的斜拉桥索力进行调整量计算,精确考虑调索顺序对张拉索力影响,实现索力最优调整的方法。算例表明,采用该方法进行合龙后索力最优调整,具有很好的控制效果和很高的计算效率。
After the closure of cable-stayed bridge,the practical cable force will be different from the designed value,therefore,cable force optimization is necessary.A kind of influence matrix method is put forward to meet the requirement of bridge key section feasible region being constraint condition;least square method is adopted to make adjustment calculation on cable force after the closure of cable-stayed bridge.Considering the influence of adjusting cable order on tensile cable force accurately is to realize the optimal adjustment method.The example shows that the method is of great controlling effect and high calculation efficiency.
出处
《中国市政工程》
2011年第1期52-53,57,共3页
China Municipal Engineering
关键词
斜拉桥
索力最优调整
影响矩阵法
可行域
最小二乘法
cable-stayed bridge
cable force optimal adjustment
influence matrix method
feasible region
least square method
