特大跨度斜拉桥制造阶段参数敏感性分析及工程应用  

Sensitivity analysis of parameters of the manufacturing stage for super-span cable-stayed bridge and its application

作　　者：黄灿[1] 赵雷[1] 张清华[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《四川建筑科学研究》2011年第3期297-300,共4页Sichuan Building Science

基　　金：国家自然科学基金资助项目(50908192)

摘　　要：基于敏感性分析的基本原理,以苏通大桥为研究对象,根据几何控制的全过程自适应施工控制方法的具体特点和要求,就制造阶段主梁和斜拉索的关键参数进行了系统的敏感性分析研究,揭示了超大跨度斜拉桥的力学特性,确定了影响主梁线形和索塔偏移的主要结构参数。为制造和施工阶段控制容许误差的确定、误差修正及最优控制决策提供科学依据。Based on the theory of sensitivity analysis,take Sutong bridge as subject investigated,sensitivity analysis of key parameters of main girder and cable-stayed are carried out according to the specific characteristics and requirements of the geometry control of the whole-procedure adaptive construction control method.The mechanical characteristics of ultra long-span cable-stayed bridge are revealed and the key structural parameters governing the main beam alignment and pylon offset are determined.It provides a scientific basis for the identification of the allowed error of manufacture and the construction phase,error correction and optimal control.

关 键 词：斜拉桥 几何控制 制造阶段 敏感性分析 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]