斜拉桥主塔弹性稳定简化分析

The Brief Analysis of Cable-stayed Bridge King-tower Elasticity

国民经济的飞速发展和国家对基础设施投入的进一步加强为我国大跨桥梁的发展提供了一个良好的条件,近十几年来,斜拉桥在我国迅速发展。由于悬吊桥梁的主塔均需承受巨大的轴向压力,而且随着桥梁跨度的增大,主塔也越来越高,结构越来越柔,其稳定问题成为一个非常突出的问题。尤其是其侧向稳定在设计时更需特别注意。尤其独塔单索面斜拉桥在空间受力和稳定性方面都相对比较薄弱,对其进行稳定性分析更显必要。

The rapid development of national economy and national investment in infrastructure provides a good condition for further enhancing the development of long span bridges in China,in the last decade,cable-stayed bridge developed rapidly in China. As the suspension bridge＇s main towers need to be under great axial pressure,and with the bridge span increases,the main tower becomes higher and higher with more flexible structure,its stability is a very prominent issue. Especially its lateral stability in the design needs even more special attention. In particular,one single tower cable-plane cable-stayed bridge in the force and stability of space are relatively weak,and its stability analysis is even more necessary.