组合有限元方法在T形梁桥荷载横向分布分析中的应用  

Application of Integrated Element Method to Analysis of Load Transverse Distribution in T-Beam Bridges

作　　者：万鹏[1] 郑凯锋[1] 

机构地区：[1]西南交通大学土木工程学院,成都市610031

出　　处：《公路》2003年第8期100-105,共6页Highway

摘　　要：组合有限元方法是进行桥梁空间行为分析的一种有效手段 ,文中首先论述组合有限元方法的特点、常用单元类型及单元组合时的要点 ,随后采用组合有限元方法分析一座预应力 T形梁桥上部结构的荷载横向分布效应 ,发现随荷载位置变化 ,不同梁位、不同截面的荷载横向分布系数也随之变化 ,而横隔梁变化时 ,荷载横向分布系数变化不大。通过与参考文献中算例的比较 ,说明采用组合有限元方法进行桥梁空间行为分析 ,可以全面、详尽。The integrated element method is an effective approach to analyse spatial behavior of bridges. In this paper, characteristics of this method, element typies in common use and key points on combining different elements are firstly discussed. Then, load transverse distribution in a PC T beam bridge is analysed by means of the integrated element method. It is found that load transverse distribution factors of different beams and sections are changed with movement of loads, while these factors don't chang obviously with variations of diaphragms. Finaly, by comparing with an example,it is concluded that spatial behavior of bridges can be comprehensively and accurately understanded by means of the integrated element method.

关 键 词：组合有限元方法 T形梁桥 桥梁工程 荷载横向分布 结构分析 空间受力分析 

分 类 号：U448.212[建筑科学—桥梁与隧道工程] U441.2[交通运输工程—道路与铁道工程]