摘要
对平面钢管桁架拱采用有限元软件ANSYS进行分析,对影响平面钢管桁架拱平面内稳定性的高跨比、矢跨比、腹杆与弦杆外径的比值等几何参数进行研究,考虑了全跨、半跨竖向均布荷载的荷载效应。分别进行了特征屈曲分析、非线性分析,得到各项几何参数对平面钢管桁架拱的面内稳定承载力的影响程度,找出对平面钢管桁架拱平面内稳定性起控制作用的参数,并通过考虑用钢量得到最经济的参数取值范围。
The finite element models of plane tubular trusses were discussed. By using the nonlinear finite element software ANSYS, the influencing factors for the in-plane stability problems of plane tubular trusses were studied. The influencing factors include depth-span ratio, rise span ratio, the ratio of web number and chord and lateral strut. Two types of vertical load were considered in the analysis, namely, full-span, half-span uniformly distributed load. The parameters of the control of the in-plane stability were found through buckling analysis and nonlinear analysis. And by considering the amount of steel, the range of economy parameters was found.
出处
《贵州大学学报（自然科学版）》
2013年第6期118-121,共4页
Journal of Guizhou University:Natural Sciences
基金
贵州省科学技术基金黔科合J字[2011]2321号
关键词
平面钢管桁架拱
平面内稳定性
参数分析
经济性
plane tubular truss-arch
in-plane stability
parameter analysis
economy analysis
作者简介
刘旭（1988-），女，贵州仁怀人，在读硕士，研究方向：大跨度空间结构，Email：liuxupidan@126．com．
通讯作者：黄勇，Email：hyl8153@yahoo.com.cn
