大跨连续刚构桥跨中下挠敏感性分析  

Sensitivity Analysis for Mid-span Down Deflection of Long Span Continuous Rigid Bridge

作　　者：鞠洪海[1] 岳英龙[1] 

机构地区：[1]烟台职业学院,山东烟台264670

出　　处：《施工技术》2009年第S2期208-213,共6页Construction Technology

摘　　要：目前大跨连续刚构桥存在的主要问题是跨中下挠和结构开裂。引起跨中下挠的成因十分复杂,往往是多种因素相互耦合,很难精确计算。运用敏感性分析理论和模拟分析的方法,对影响跨中下挠的各参数进行敏感性分析,主要包括结构的开裂、预应力损失、超载等,得出相关结论。At present,the main problems existed in long span continuous rigid bridge are mid-span down deflection and structure crack.The causes inducing mid-span down deflection interact each other which is hard for accurate calculation.In this article,the authors analyze sensitivity of some parameters on mid-span down deflection of this bridge by sensitivity theory and simulation analysis method,and some conclusions are taken.These parameters include crack,prestress loss and overloading.

关 键 词：桥梁工程 下挠 开裂 预应力损失 超载 

分 类 号：U448.23[建筑科学—桥梁与隧道工程] U441[交通运输工程—道路与铁道工程]