销接简支钢梁的侧向稳定  

Lateral Stability of the Pin-connected Simply Supported Steel Beam

作　　者：贾红梅[1] 闫贵平[1] 段树金[2] 

机构地区：[1]北京交通大学土木建筑工程学院 [2]石家庄铁道学院土木工程分院结构工程研究所

出　　处：《中国安全科学学报》2004年第3期88-91,共4页China Safety Science Journal

摘　　要：销接钢结构广泛应用于结构工程中。销孔间隙会使体系产生初始几何位移 ,并对结构的承载力产生不容忽视的影响。笔者提出折减刚度的概念 ,对销结钢结构体系的稳定承载力进行了一次逼近 ,这提供了一种新方法和新思路。在算例中对六四式铁路军用梁标准三角拼组简支梁考虑初始几何位移对梁的稳定承载力进行了分析 。The pin connected steel structure, as a kind of pre cast structures, is widely used in structural engineering. Because of the interstice between pin and pinhole, the initial geometric displacement is generated, and then the bearing capacity of the structure is reduced. In this paper, by using the concept of reduced rigidity, the stability bearing capacity of the pin-connected steel structure is approached approximately, which put forward a new method and new ideas. As the examples, the stability bearing capacity of simply supported steel beam with the initial geometric displacement is studied. The critical span of structure with stability is obtained.

关 键 词：销接钢结构 侧向稳定 承载力 折减刚度 临界跨度 梁 

分 类 号：TU323.3[建筑科学—结构工程]