铁路桥式方案比选CAD系统中的自动化布束方法研究  

Automatic distribution of steel bunches in railway bridge project selection CAD system

作　　者：于向东[1] 乔建东[1] 裘伯永[1] 陈政清[1] 

机构地区：[1]长沙铁道学院土木建筑学院,湖南长沙410075

出　　处：《铁道学报》2000年第4期81-83,88,共4页Journal of the China Railway Society

基　　金：铁道部科技发展计划项目! ( 92 G13)

摘　　要：铁路桥式方案比选 CAD系统是应用于铁路桥梁初步设计的大型计算机辅助设计软件。本文着重研究预应力混凝土连续梁体系自动布束问题 ,导出了适合于多跨连续梁任意体系转换形式的自动布束的力学方程。采用本论文的布束方法 ,布束一次完成 。The railway bridge project selection CAD system is a large scale computer aided software tool for railway bridge preliminary design. This paper mainly probes the automatic distribution of steel bunches of prestressed concrete continuous beam system and infers the mechanic equations of the automatic distribution of steel bunches applied in random system transformation of multi-span continuous beam. The adjustment of steel bunches can be completed once for all by employing the above method which may avoid the complex computation of the creep secondary internal forces caused by system transformation and the secondary internal forces caused by exerted indeterminate structure.

关 键 词：铁路桥式方案 CAD系统 自动化布束方法 比较选择 

分 类 号：U448.13[建筑科学—桥梁与隧道工程] TP391.72[交通运输工程—道路与铁道工程]