| 矩形钢管混凝土桁架节点极限承载力研究 |
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| 引用本文： | 狄谨,周绪红,刘永健. 矩形钢管混凝土桁架节点极限承载力研究[J]. 中国公路学报, 2004, 17(3): 62-67 |
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| 作者姓名： | 狄谨 周绪红 刘永健 |
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| 作者单位： | 长安大学桥梁与隧道陕西省重点实验室,陕西,西安,710064 |
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| 基金项目： | 湖南省自然科学基金项目(98JJY2042) |
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| 摘 要： | 采用退化壳单元和三维实体单元分别模拟钢管和混凝土,考虑材料非线性、钢管与混凝土的接触非线性,对矩形钢管混凝土桁架节点的极限承载能力进行了研究。采用该方法对Y型节点、X型节点、T型节点以及K型节点进行非线性有限元分析得到的极限荷载值与试验破坏荷载值较为吻合。为矩形钢管混凝土节点极限承载力的分析提供了一个合适的方法,同时为矩形钢管混凝土桁梁桥节点的设计方法提供了理论依据。
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| 关 键 词： | 桥梁工程 节点极限承载力 有限元分析 钢管混凝土桁架 材料非线性 接触非线性 |
| 文章编号： | 1001-7372(2004)03-0062-06 |
| 修稿时间： | 2003-08-13 |
Research on the ultimate bearing capacity of joint in the concrete filled rectangular steel tube truss |
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| DI Jin,ZHOU Xu-hong,LIU Yong-jian University,Xi'an ,China). Research on the ultimate bearing capacity of joint in the concrete filled rectangular steel tube truss[J]. China Journal of Highway and Transport, 2004, 17(3): 62-67 |
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| Authors: | DI Jin ZHOU Xu-hong LIU Yong-jian University Xi'an China) |
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| Affiliation: | DI Jin,ZHOU Xu-hong,LIU Yong-jian University,Xi'an 710064,China) |
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| Abstract: | The analysis of the ultimate bearing capacity of joint in the concrete filled rectangular steel tube is presented in this paper by the finite element method with degenerate shell element and 3-D solid element, which takes into consideration the material nonlinear and the contact nonlinear which simulates the work between the steel tube and the concrete. Based on the method derived in this paper, the ultimate load capacity of joints has good agreement with the test value. The comparison of the theoretical prediction with the experimental results shows that the analysis method has very high precision and efficiency and provides the reliable theory for the design method of joint in the concrete filled rectangular steel tube truss bridge. |
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| Keywords: | bridge engineering ultimate bearing capacity of joint finite element analysis concrete filled steel tube truss material nonlinear contact nonlinear |
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