影响蒙皮支撑梁静力性能的若干因素  

SEVERAL FACTORS AFFECTING THE STATIC BEHAVIOR OF DIAPHRAGM BRACED BEAMS

作　　者：朱勇军[1] 张耀春[2] 刘锡良[1] 

机构地区：[1]天津大学建筑工程学院 [2]哈尔滨建筑大学

出　　处：《天津大学学报》1999年第2期163-167,共5页Journal of Tianjin University(Science and Technology)

基　　金：国家自然科学基金

摘　　要：本文利用几何非线性有限元法分析了蒙皮支撑梁间距、跨度、构件截面开口方向及构件初始扭转对蒙皮支撑梁静力性能的影响．研究结果表明，在实际工程应用范围内，梁间距的变化不会对蒙皮支撑梁的性能产生显著的影响．蒙皮的侧向支撑和扭转约束作用能明显改善侧向长细比较大的梁的性能．构件截面开口方向的组合方式对构件性能也有一定影响．构件的初始扭转对蒙皮支撑梁的性能没有显著的影响．Using the geometric nonlinear finite element method,the effect of the spacing and length of a beam,the direction of the open section and the initial torsion on the static behavior of diaphragm braced beams were investgated in this paper. The research results indicate that within the variable range in practical projects,the beam spacing has no notable effect on the behavior of a diaphragm braced beam.The diaphragm lateral bracing and rotational restraint for the beam can improve the behavior of beams with a larger lateral slenderness obviously.The direction of the open section also has effect on the beam behavior to some extent.The initial torsion of the beam has very little effect on the beam behavior

关 键 词：蒙皮支撑梁 静力性能 钢结构 梁 

分 类 号：TU392.401[建筑科学—结构工程]