索托桥结构分析

Structural analysis of cable-held bridge

通过对拉索与主梁连接形式的改变来改善斜拉桥受力性能方面的缺陷 ,同时塔高也可大大降低 ,由于塔高降低 ,结构的总体刚度加大 ,有利于桥梁抗风及抗震 ;对计算中的接触理论问题也作一粗略介绍 ;对索托桥的原理加以说明 ;对相同结构与荷载条件下索托桥与斜拉桥的内力、挠度作了对比。从而从实践与理论方面得出结论 ,索托桥是一种完全可行的与斜拉桥及悬索桥相比具有许多优点的新型大跨桥梁结构形式。

In this study,authors try to improve cable stayed bridge limitations through changing the linkage between cables and beams.The tower height can be reduced,so it can be beneficial to wind and seism resistance.Moreover,the principium of the cable held bridge and the contact theory used in the computation are also explained.The internal forces and deflection of cable held bridge and cable held bridge under the same figurations and loads are compared. The results indicate that the cable held bridge is absolutely feasible and has many advantages over the popularly used cable stayed bridge.