| 平面钢管桁架拱平面内稳定承载力的参数分析 |
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| 引用本文： | 刘旭,黄政华,黄勇. 平面钢管桁架拱平面内稳定承载力的参数分析[J]. 贵州大学学报(自然科学版), 2013, 0(6): 118-121 |
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| 作者姓名： | 刘旭 黄政华 黄勇 |
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| 作者单位： | 贵州大学土木工程学院,贵阳550003 |
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| 基金项目： | 贵州省科学技术基金黔科合J字[2011]2321号 |
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| 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。
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| 关 键 词： | 平面钢管桁架拱 平面内稳定性 参数分析 经济性 |
Analysis on Influencing Factors for the In-Plane Stability Problems of Plane Tubular Truss-arch |
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| LIU Xu,HUANG Zheng-hua,HUANG Yong. Analysis on Influencing Factors for the In-Plane Stability Problems of Plane Tubular Truss-arch[J]. Journal of Guizhou University(Natural Science), 2013, 0(6): 118-121 |
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| Authors: | LIU Xu HUANG Zheng-hua HUANG Yong |
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| Affiliation: | (College of Civil Engineering, Guizhou University, Guiyang 550003, China) |
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| Abstract: | 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. |
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| Keywords: | plane tubular truss-arch in-plane stability parameter analysis economy analysis |
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