摘要
在节点竖向集中荷载作用和边界上、下弦节点约束条件下,采用空间梁单元分析了13个空腹拱架的算例。重点讨论了矢跨比和厚跨比对结构静力性能的影响。分析表明,空腹拱架的矢跨比在1/4-1/6时,其强度指标和刚度控制均较为理想;拱架厚度对结构静力性能的影响较小。对空腹拱架的简化分析进行了对比计算,表明可将拱架按轴向刚度等效为单层拱架进行分析,可用于结构初步设计时对强度和刚度的控制。结论可为类似工程的应用提供参考。
Under vertical loads, space beam finite element method is used for 13 example of this structure fixed translational DOF of boundary node, the influence of deformation and internal force with height - to - span and thickness of shell are discussed. The analysis results show that when its height - to - span is 1/4 -1/6,its strength index and stiffness control are ideal;The changes on static behavior are very small with thickness. This paper compare the open web arch steel frame and single - layer arch steel frame and shows arch steel frame can be analyzed by single -layer arch steel frame which is changed by axial stiffness, its can be used in the control of strength and stiffness when preliminary designing. The conclusions of the text can offer reference for the application of similar projects.
出处
《贵州工业大学学报（自然科学版）》
CAS
2008年第4期89-93,共5页
Journal of Guizhou University of Technology(Natural Science Edition)
基金
贵州省优秀青年教育人才省长专项资金(20070501)资助项目
关键词
空腹拱架
有限元分析
静力性能
竖向荷载
简化分析
open web arch steel frame
finite element analysis
static behavior
vertical load
simplified analysis
