截面为三角形的空间格构式圆拱平面内整体稳定性能分析  

ANALYSIS FOR IN-PLANE GLOBAL STABILITY OF SPATIALLY LATTICED CIRCULAR ARCH WITH TRIANGULAR SECTION

作　　者：张耀春[1] 张秀华[2] 

机构地区：[1]哈尔滨工业大学土木工程学院,哈尔滨150090 [2]东北林业大学土木工程学院,哈尔滨150040

出　　处：《工业建筑》2004年第4期76-78,共3页Industrial Construction

摘　　要：空间格构式圆拱是一种较为新颖的空间结构 ,具有外形美观、受力合理、经济实用等优点。稳定性计算是拱结构设计中一个关键课题。利用ANSYS有限元程序对格构式拱在满跨均布荷载作用下进行了几何非线性分析 ,并从结构的荷载 -位移全过程曲线考察该结构平面内稳定问题的基本规律。通过对大量数据进行回归分析 ,得出格构式圆拱平面内整体稳定临界荷载拟合公式 ,供设计参考。The spatially latticed circular arch structure with triangular section is a new structural system and has lots of advantages such as architecturally attractive shape,rational loading performance,economy and practicality.Stability calculation is the key problem of the arch structure design.By means of the finite element program ANSYS,the geometrical non-linear analysis of this circular arch was conducted under the unitformly distributed load along whole span.According to the general load-deformation response curves,the basic law of the stability of the spatial lattice arch structure has been obtained.The matching formulae were given by the value regression method,which can be used to calculate the in-plane global stability critical load of these structures.

关 键 词：空间格构式圆拱 稳定性 空间结构 临界荷载 有限元程序 

分 类 号：TU311.4[建筑科学—结构工程]