期刊论文

中文

交通科学与工程

1674-599X

2006

22

3

40-43

10.3969/j.issn.1674-599X.2006.03.009

本校为第一机构

利用解析法推导了变温度场中悬索桥空缆线形的悬链线线形公式;建立了两种已知设计条件时悬索桥空缆线形的迭代方法;根据主缆的温度变化方程导出了温度变化时无应力索长计算公式。计算结果表明:在非设计温度下,主缆的位形及其内力值均与设计理论值有较大误差,因此在悬索桥的结构分析中必须考虑温度变化的影响。

With analytic method, an iteration method was developed to find the initial states of suspension bridge with two design parameters, this method can calculate the catenary equation in variable temperature field. Based on the equation of variable temperature field, a formula in order to calculate the length of the nonstress cable is deduced. The results show that, in variable temperature field , the states and stress of suspension bridge are different from the calculated value, and the influence of the temperature must be...