三塔斜拉桥竖向刚度解析分析  

Analytical Research of Vertical Stiffness of Three-tower Cable-stayed Bridges

作　　者：刘丰洲[1] 

机构地区：[1]同济大学建筑设计研究院(集团)有限公司

出　　处：《上海公路》2011年第1期56-58,61,共4页Shanghai Highways

摘　　要：三塔斜拉桥的竖向刚度过低是限制其实际应用的主要因素之一。推导了三塔斜拉桥竖向刚度的近似解析公式,以对其进行深度分析。由解析公式出发,揭示了三塔斜拉桥竖向刚度过低的本质,并研究了各参数对三塔斜拉桥竖向刚度的影响。One of the main reasons to limit the practical application of three-tower cable-stayed bridge is its vertical stiffness too low. To analyze the vertical stiffness of three-tower cable-stayed bridge,its approximate analytic formula is derived.Based on the analytic formula,the fact that low vertical stiffness of three-tower cable-stayed bridge is revealed.The various parameters impacted on the vertical stiffness of three-tower suspension is also been studied.

关 键 词：三塔斜拉桥 竖向刚度 弹性地基梁法 简化计算 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]