RESEARCH IN FORM-FINDING OF SUSPENSION STRUCTURES BASED ON NEWTON-RAPHSON ITERATION AND ZERO ORDER OPTIMIZATION ARITHMETIC
RESEARCH IN FORM-FINDING OF SUSPENSION STRUCTURES BASED ON NEWTON-RAPHSON ITERATION AND ZERO ORDER OPTIMIZATION ARITHMETIC
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发表时间：
2007
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通讯作者：
Guo Tong
中科院分区：
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作者：
Guo Tong
为了精确地找到悬索的形式，使用了牛顿-拉夫森迭代，并且还专门使用零阶优化算法来控制过程。同时，分析了影响求解精度的因素。在此基础上，以润扬悬索桥恒载找形为例，将结果与膜理论和现场试验数据进行对比。结果表明，通过控制预定义点的坐标，可以获得更精确的解。该方法可用于悬索桥等大跨度索结构主缆找形及施工控制。
To find the form of suspension cables precisely, the Newton-Raphson iteration is used and the zero order optimization arithmetic is also dedicated to control the procedure. Meanwhile, the factors that influence the precision of solution are analyzed. Based on this, the form-finding of Runyang suspension bridge under dead load is taken as an example, and the results are compared with those of membrane theory and data from field test. The results show that through the control of the coordinate of the predefined points, the more precise solution can be achieved. This method can be used in form-finding and construction control on main cables of suspension bridge and other long-span cable structures.