摘要
给出了双塔斜拉桥的一阶竖弯频率和一阶扭转频率的近似计算公式。与传统方法或规范公式相比,推荐的近似计算公式精度更高,并且能适用于大跨度、超大跨度斜拉桥,从而为这类斜拉桥的初步设计、方案比选、校核有限元结果提供了一种更为快捷有效的依据。
This paper provides some approximate calculation formula for first order frequency of vertical bending and torsion of cable-stayed bridge with double pylons. Compared with traditional methods or formula of design specification, the results derived from recommendation formula in this paper are more precise, and also suitable for super long-span cable-stayed bridge. The research results could be an rapid and effective basis for preliminary design, scheme comparison and selection, verification of finite element analysis results of cable-stayed bridge.
出处
《公路工程》
2009年第1期72-76,共5页
Highway Engineering
关键词
双塔斜拉桥
一阶纵飘频率
竖弯基频
扭转基频
近似计算
cable-stayed with double pylons
first order floating frequency
basic frequency of vertical bending
basic frequency of torsion
approximate calculation
