不同支承形式对曲线梁桥扭矩分布的影响  

The Torque Distribution of Curved Girder Bridge on Different Supporting Forms

作　　者：龚谦 米若谷[2] 

机构地区：[1]慈溪市水利建筑勘测设计院有限公司,浙江慈溪315300 [2]宁波工程学院,浙江宁波315016

出　　处：《宁波工程学院学报》2007年第4期18-20,36,共4页Journal of Ningbo University of Technology

摘　　要：由于预应力混凝土曲线梁桥结构本身的特点,在荷载作用下弯矩与扭矩的相互耦合作用,其支承形式应根据曲率半径的大小、上下部结构的总体布置决定,从而选用对结构受力有利的支承形式,并由此决定全桥的力学计算模型。本文针对不同的支承形式对曲线梁桥扭矩分布的影响进行了初步的研究,通过工程实例的计算分析得出了一些有益的结论。Because of the characteristics of coupling effect of bending and torsional moment on the pre - stressed concrete curved - box - girder bridge, its supporting forms are determined on the size of the radius and general layout of bridge superstructure and substructure ; then the favorable supporting forms for the structure stress are selected, and the mechanic model of the bridge is decided. The paper studies the effects of torque distribution for the various forms of bearings of pre - stressed concrete curved bridge, and some useful conclusions are generalized through calculation and analysis of the working examples.

关 键 词：曲线梁桥 支承形式 扭矩分布 

分 类 号：U488[交通运输工程—载运工具运用工程]