开封黄河桥七塔部分斜拉桥力学性能分析

部分斜拉桥是最近十多年发展起来的一种经济桥型,其结构特性介于连续梁桥和斜拉桥之间,适合跨径100m～300m的PC梁桥。针对开封桥塔多、连续长度长、桥面宽的特点,对传统部分斜拉桥的设计参数进行了优化。采用MIDAS/Civil桥梁专用程序对开封桥进行结构静力特性分析,说明部分斜拉桥普遍的力学特性和开封桥的个性特点,为今后同类型桥梁的设计提供参考。

Analysis on Mechanical Property of Partial Cable-Stayed Bridge With 7 Towers of Kaifeng Yellow River Bridge

Partial cable-stayed bridge is an economic bridge type developed in recent ten years. Its structural property is between continuous bridge and cable-stayed bridge, which adapts to PC girder bridge with span of 100m-300m. In view of the characteristics of numerous bridge towers, long continuous length and wide bridge deck of Kaifeng Bridge, the design parameters of traditional partial cable-stayed bridge are optimized. Using spe- cial program MIDAS/Civil to carry on the structural static characteristics analysis of Kaifeng Bridge, the universal mechanical properties of partial cable-stayed bridge and the special characteristics of Kaifeng Bridge are illuminated, whieh can provide reference for the design of similar bridges in future.