期刊论文

中文

公路交通科技

1002-0268

2011

28

9

60-65

10.3969/j.issn.1002-0268.2011.09.009

本校为其他机构

以卡罗波夫折减法为基础,提出了一种改进的计算斜拉桥桥塔稳定系数的方法——修正的弹性支承法。以目前世界上跨度最大的斜拉桥—苏通大桥为例进行计算,并将计算结果与有限元分析结果进行了对比。结果表明,在一定的施工状态、荷载工况及参数条件下,该计算方法得到的桥塔稳定系数与有限元分析结果非常接近。修正的弹性支承法由于考虑了斜拉索的保向力及其空间分布特点,可以在弹性范围内比较准确地对桥塔刚度较大、塔跨比较小、索距较小的双塔双索面斜拉桥桥塔做稳定性分析;对大跨度桥梁结构稳定性的研究还应考虑其非线性和局部稳定性,应按第2类稳定性计算,因此,基于弹性的稳定系数简化计算方法还...

Based on the Carol Bove reduction method,an improved method,i.e.,modified elastic support method,was put forward to calculate the pylon＇s stability coefficient of cable-stayed bridge.The calculation based on Sutong Bridge,the longest span cable-stayed bridge in the world,was performed.The values obtained by the presented method were compared with the values gained by finite element method.The results show that（1） the stability coefficients calculated by the presented method and finite element method are close under certain construction,loadi...