摘要
利用SAP2000,对一跨度128m的单榀张弦桁架结构进行了受力性能分析,研究了撑杆间距及数目、矢跨比、垂跨比和桁架截面高度等4个参数对结构变形、内力和用钢量的影响,为张弦桁架结构的优化设计提供了重要的设计参数。分析结果表明,结构的矢跨比适宜取0.12,垂跨比适宜取0.1,桁架截面高度与跨度之比在0.023左右合适,对于跨度为128m的张弦桁架结构,撑杆数目以11个为宜。
In this paper the structural behavior of a span of 128 m of the single truss string structure is studied by super SAP2000.The effects of four parameters such as the number of struts,rise-to-span ratio,sag-to-span ratio,height of truss section on the deformation,the internal force and the consumption of steel are studied in detail.The suggested value of four parameters is given,which may be a reference for design.The numerical results show that the better rise-to-span ratio is 0.12,the better sag-to-span ratio is 0.1,the better height of truss section to span ratio is 0.023,and the best number of struts is 11 for a span of 128 m of the truss string structure.
出处
《河南科技大学学报（自然科学版）》
CAS
2008年第2期65-70,共6页
Journal of Henan University of Science And Technology:Natural Science
基金
广州市高校科技计划项目(62049)
关键词
张弦桁架
受力性能
有限元分析
Truss string structures
Mechanical behavior
Parametric analysis
