独塔双跨空间索面自锚式悬索桥体系转换方案确定

针对以独塔自锚式不对称空间缆索悬索桥在体系转换施工期的受力和变形特点,以广州猎德大桥为例,系统地总结和提出该类悬索桥吊索张拉方案(含鞍座顶推)确定原则,给出了吊索张拉方案,在参数敏感性分析基础上,结合自锚式悬索桥不同施工阶段的力学特点,提出体系转换过程中及桥面铺装后吊索张拉的控制原则和施工方法,为同类桥梁吊索张拉和鞍座顶推施工提供参考。

Determination of Conversion Plan for Self-Anchored Suspension Bridge System with Single-tower, Double-span and Spacial Cables

Aiming at the features of stress and deformation of the self-anchored asymmetrical spatial cable suspension bridge during construction of system conversion and based on Guangzhou Liede Bridge for example,this paper systematically concludes and proposes principles for determination of schemes for cable tension(including saddle pushing) of such bridge and works out the scheme for cable tension.On the basis of analysis for sensitivity of parameters and in combination with the mechanical properties in different...