大跨度刚架拱桥的荷载横向分布研究  

作　　者：谭毅平[1,2] 王勇[1,2] 颜全胜[1,2] 

机构地区：[1]华南理工大学交通学院 [2]广东省建筑设计研究院

出　　处：《中外建筑》2004年第4期118-120,共3页Chinese & Overseas Architecture

摘　　要：桥上荷载横向分布的规律与结构连接的刚度有着密切关系,横向连接刚度愈大,则横向分布作用愈显著,各梁(拱)的负担也愈均匀。通常来说,刚架拱桥的整体性较差,横向联系相对来说比不上普通的梁桥。本文通过对德庆县龙母大桥(刚架拱桥)进行静载试验,测试出其荷载横向分布系数,并将试验结果与用ANSYS建立的三种有限元模型模拟分析、弹性支承连续梁法、偏心压力法、推力体系比拟板法的理论计算结果进行分析比较,总结出大跨度刚架拱桥横向分布计算的最适用的计算方法。Lateral distribution of load is tied affinity to structural conne ction. If girder or arch rib is connected tightly, and is shared equally load. R igid-frame arch bridge is a weak structure in integer, and is not the same as co mmonly bridge. In this paper, Lateral distribution of load of a rigid-frame arch bridge for Longmu in Deqing County is got by field test. Through the comparison of analyzing three finite element models by ANSYS software, continuous beam wit h elastic supporters, eccentric compressive method and extensive G-M method, a m ethod that is equal to rigid-frame arch bridge is presented.

关 键 词：刚架拱桥 荷载横向分布系数 连续梁法 梁桥 大桥 大跨度 弹性支承 拟板法 刚度 压力法 

分 类 号：U441[建筑科学—桥梁与隧道工程]