体内预应力钢屋架成型过程的参数分析  

Parameter Study on Erection of Internal-prestressed Steel Roof Truss

作　　者：祖青[1] 吴大俊[2] 

机构地区：[1]中国中元国际工程公司,北京100089 [2]北京送变电公司,北京102401

出　　处：《工程建设与设计》2011年第3期61-62,共2页Construction & Design for Engineering

摘　　要：工体内预应力钢屋架是一种新颖的结构形式,成型过程中的参数分析对于深入认识结构特性和提出合理的结构设计思路具有重要意义。作者采用等效降温法并借助通用有限元程序模拟体内预应力钢屋架的成型过程,研究截面尺寸、刚臂长度、端部腹杆与上弦夹角、初始跨度对变形和预应力分布的影响。TThe internal-prestressed steel roof truss is a novel structure.The parameter study in its erection process is meaning for understanding its structural properties and proposing its design method.In this paper,the erection of internal-prestressed steel roof truss is simulated by using the equivalent cooling method in common finite element software.The effect of the cross sectional dimension,length of rigid arm,angle between end webmember and top chord,initial span on the deformation and prestress distribution is studied.

关 键 词：体内预应力钢屋架 张拉成型 参数分析 

分 类 号：TU31[建筑科学—结构工程]