This paper USES the principle of energy to obtain the approximate solutions for the cable-stayed Bridges. The method of successive approximation has been applied to the analyses of the actual bridge.
本文采用能量原理，导出斜拉桥的近似解答，并利用逐次渐近法对一座实际桥梁进行数值计算。
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At first, the groups division is made on the apex, then applying a successive improvement method to find out an approximate optimum return trip for saleclerks in every individual group.