| 半刚性连接空间钢框架二阶弹性分析 |
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| 引用本文： | 舒兴平 丁国强 林鹏 姜晓辉. 半刚性连接空间钢框架二阶弹性分析[J]. 湖南大学学报(自然科学版), 2005, 32(2): 50-53 |
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| 作者姓名： | 舒兴平 丁国强 林鹏 姜晓辉 |
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| 作者单位： | 湖南大学,土木工程学院,钢结构研究所,湖南,长沙,410082;上海宝冶建设有限公司,上海,200941 |
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| 摘 要： | 基于连续介质力学有限变形理论推导了空间钢框架几何刚度矩阵．采用KishiChen幂函数模型描述半刚性连接特性，导得了半刚性连接空间杆单元几何刚度矩阵，并编制了二阶弹性分析程序，对空间钢框架在弹性阶段的性能进行了研究．分析结果表明：半刚性连接的存在使空间钢框架的双向侧移有明显增加，且随着框架层数增加影响增大．因此．在钢框架结构的分析设计中，须考虑半刚性连接的影响．
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| 关 键 词： | 钢结构 半刚性连接 空间钢框架 二阶效应 刚度矩阵 |
| 文章编号： | 1000-2472(2005)02-0050-04 |
Practical Second-Order Elastic Analysis for Semi-Rigid Space Frames |
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| SHU Xing-ping,DING Guo-qiang,LIN Peng,JIANG Xiao-hui. Practical Second-Order Elastic Analysis for Semi-Rigid Space Frames[J]. Journal of Hunan University(Naturnal Science), 2005, 32(2): 50-53 |
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| Authors: | SHU Xing-ping DING Guo-qiang LIN Peng JIANG Xiao-hui |
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| Affiliation: | SHU Xing-ping~1,DING Guo-qiang~1,LIN Peng~1,JIANG Xiao-hui~2 |
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| Abstract: | Based on the finite-deformation theory of continuum mechanics, the stiffness matrix of steel space frame was derived. And by using Kishi-Chen power model to describe the nonlinear behavior of semi-rigid connections, the stiffness matrix for semi-rigid space frame was deducted. Then a program for analyzing the second-order effects of steel space frame has been developed. The case study indicated that semi-rigid connections could augment displacement of frame in two orientations, and such effect increased when increasing the number of the frame floors. So it is necessary to consider the effect of semi-rigid connections in advanced analysis of steel frame. |
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| Keywords: | steel structures semi-rigid connection steel space frame second order effects stiffness matrix |
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