| 钢管混凝土三维非线性梁单元的研究与应用 |
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| 引用本文： | 严志刚,王德军,盛洪飞. 钢管混凝土三维非线性梁单元的研究与应用[J]. 哈尔滨工业大学学报, 2003, 35(3): 334-337,341 |
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| 作者姓名： | 严志刚 王德军 盛洪飞 |
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| 作者单位： | 哈尔滨工业大学,交通科学与工程学院,黑龙江,哈尔滨,150090 |
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| 摘 要： | 为研究钢管混凝土构件的力学性能。建立可承受压弯剪（扭）的三维钢管混凝土梁单元，用双线性随动硬化模型模拟外钢管的本构关系，对核心受拉和受压混凝土采用不同的非线性材料特性。利用自行编制的程序，对各种钢管混凝土构件荷载－变形全过程分析，计算结果与试验数据符合较好。
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| 关 键 词： | 钢管混凝土 梁单元 双线性随动硬化 |
| 文章编号： | 0367-6234(2003)03-0334-04 |
Application of 3D nonlinear beam elements of concrete filled steel tube |
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| YAN Zhi gang,WANG De jun,SHENG Hong fei. Application of 3D nonlinear beam elements of concrete filled steel tube[J]. Journal of Harbin Institute of Technology, 2003, 35(3): 334-337,341 |
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| Authors: | YAN Zhi gang WANG De jun SHENG Hong fei |
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| Abstract: | A kind of 3D CFST beam element is studied for its behaviors under compression, bending, torsion and shearing and material nonlinearities are considered with a bilinear kinematic hardening constitutive model for steel tube and the relationship between stress and strain for the core concrete under compression and tension. Several CFST members are analyzed for their load deformation processes with finite element program, and the results are in good agreement with the test data, so the use of this kind of element can be extended to complex CFST structures. |
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| Keywords: | concrete filled steel tube beam element bilinear kinematic hardening |
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