【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。更多还原

【Abstract】 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.更多还原