| 采用分离模量分析钢管混凝土框架结构的抗震性能 |
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| 引用本文： | 许成祥,彭少民.采用分离模量分析钢管混凝土框架结构的抗震性能[J].武汉理工大学学报,2007(Z2). |
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| 作者姓名： | 许成祥 彭少民 |
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| 作者单位： | 长江大学城市建设学院 荆州434023(许成祥)，武汉理工大学土木工程与建筑学院 武汉430070(彭少民) |
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| 基金项目： | 湖北省自然科学基金(2003Z0309) |
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| 摘 要： | 基于一榀两跨3层钢管混凝土柱-钢梁框架结构模型的抗震性能试验,建立了反复荷载作用下的刚度退化规律。选用合理的反复荷载作用下钢材和钢管约束混凝土材料的本构模型,考虑钢与混凝土的粘结滑移作用以及节点加强等因素的影响,应用钢管混凝土分离模量理论,采用APDL(ANSYS Parametric Design Language)参数化程序设计语言编制的命令流,对钢管混凝土框架在反复荷载作用下的抗震性能进行了非线性有限元分析。计算结果与模型试验结果吻合较好,并讨论了套箍系数对框架结构抗震性能的影响。
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| 关 键 词： | 钢管混凝土结构 有限元法 分离模量 抗震性能 |
Analysis on Seismic Behavior of Concrete-filled Steel Tubular Frames Using the Separated Modulus Method |
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| XU Cheng-xiang,PENG Shao-min.Analysis on Seismic Behavior of Concrete-filled Steel Tubular Frames Using the Separated Modulus Method[J].Journal of Wuhan University of Technology,2007(Z2). |
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| Authors: | XU Cheng-xiang PENG Shao-min |
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| Affiliation: | XU Cheng-xiang1,PENG Shao-min2 |
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| Abstract: | Based on the model experiment on seismic behavior of a 2 span,3 story concrete filled steel tubular(CFST) frame under lateral cyclic loads,the regular pattern of rigidity degeneration was gained.The constitutive relationships of steel and concrete confined by steel tube,which is suitable for CFST structures under cyclic loading,were chosen.The effect of the stiffened joint and the action of bond-slip between steel and concrete were taken into account.Based on the separated modulus method,the command stream were edited with ANSYS Parametric Design Language,the analysis on seismic performance of CFST frames under cyclic loading were investigated by nonlinear finite element method.The calculated results are much coincided with the tested results,and the effects of the confining index on the seismic behavior of CFST frames were discussed. |
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| Keywords: | structure of the concrete-filled steel tubular finite element method separated modulus seismic behavior |
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