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| 钢管桁架屋盖结构静动力性能的有限元分析 | |
| 引用本文： | 袁健,蒋沧如,陈志华.钢管桁架屋盖结构静动力性能的有限元分析[J].空间结构,2010,16(1). |
| 作者姓名： | 袁健 蒋沧如 陈志华 |
| 作者单位： | 1. 中南林业科技大学土木建筑与力学学院,湖南,长沙,410004;武汉理工大学土木工程与建筑学院,湖北武汉430070 2. 武汉理工大学土木工程与建筑学院,湖北武汉,430070 3. 武汉理工大学土木工程与建筑学院,湖北武汉430070;浙江大学建筑工程学院空间结构研究中心,浙江杭州,310027 |
| 摘 要： | 武汉市某体育馆上部采用圆钢管拱桁架屋盖结构,由两榀方钢管立体桁架支承.通过考虑10种不同的荷载工况组合,得出拱桁架上、下弦杆的轴力随跨度的变化情况.为探讨边界条件对拱桁架结构极限承载力的影响,选取四种不同的模型进行弹塑性双重非线性分析,并得到荷载-位移全过程曲线.拱桁架与立体桁架之间的连接分别按铰接和刚接处理,分析比较了屋盖整体结构的自振频率及振型,并借助ANSYS,采用振型分解反应谱法研究其抗震性能.结果表明,支承刚度对拱桁架的极限承载力影响显著,屋盖整体结构在水平地震作用下的反应不明显.该屋盖的承载力及变形均能满足要求,且具有一定的安全储备. |
| 关 键 词： | 钢管桁架屋盖 有限元分析 静力 极限承载力 自振特性 地震反应 |
Finite element analysis of static and dynamic performance of roof structure with steel tubular truss |
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| YUAN Jian,JIANG Cang-ru,CHEN Zhi-hua.Finite element analysis of static and dynamic performance of roof structure with steel tubular truss[J].Spatial Structures,2010,16(1). | |
| Authors: | YUAN Jian JIANG Cang-ru CHEN Zhi-hua |
| Affiliation: | 1.School of Civil Engineering and Mechanics/a>;Central South University of Forestry and Technology/a>;Changsha 410004/a>;2.School of Civil Engineering and Architecture/a>;Wuhan University of Technology/a>;Wuhan 430070/a>;China/a>;3.Spatial Structures Research Center/a>;College of Civil Engineering and Architecture/a>;Zhejiang University/a>;Hangzhou 310027/a>;China |
| Abstract: | An arch-truss roof structure with circular steel tube is applied to a gymnasium in Wuhan City,which is supported by two three-dimensional trusses with square steel tube.Considering ten kinds of different load combinations,variaton of axial force along with the span have been obtained.In order to recognize influence of boundary conditions on the ultimate load-bearing capacity of arch-truss,elastic-plastic nonlinear analyses have been investigated for four kinds of different selected models,and load-displacem... |
| Keywords: | roof structure with steel tubular truss finite element analysis static ultimate load-bearing capacity natural character earthquake response |
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