| 反复荷载下矩形钢管混凝土柱的抗震性能Ⅱ:分析研究 |
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| 引用本文： | 李学平,吕西林,郭少春.反复荷载下矩形钢管混凝土柱的抗震性能Ⅱ:分析研究[J].地震工程与工程振动,2005,25(5):104-111. |
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| 作者姓名： | 李学平 吕西林 郭少春 |
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| 作者单位： | 同济大学建筑设计研究院 上海200092
(李学平)，同济大学土木工程防灾国家重点实验室 上海200092
(吕西林)，宁夏大学土木与水利工程学院 宁夏银川750021(郭少春) |
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| 基金项目： | 周家杰出青年科学基金（50025821）;国家创新研究群体科学基金（50321803） |
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| 摘 要： | 文中首先提出了钢管与内填混凝土界面的粘结-滑移滞回模型，建立了考虑包兴格效应的钢材单轴滞回模型和考虑矩形钢管约束效应后内填混凝土的单轴应力-应变滞回模型。在截面纤维模型的基础上，建立了考虑界面粘结-滑移的矩形钢管混凝土柱分析模型，用Fortran语言编制了相应的全过程分析程序。对作者等完成的试件进行了滞回全过程数值模拟计算，分析与试验结果在荷载-位移和荷载-应变两种层次上进行了对比。之后，利用该分析程序对矩形钢管混凝土柱中有代表性的混凝土和钢单元应力-应变发展全过程进行了跟踪分析。最后，以典型试件为对象，分析了钢-混凝土界面切向粘结强度对柱滞回性能的影响。本文工作可为从事组合结构研究时提供参考。
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| 关 键 词： | 矩形钢管混凝土 抗震性能 非线性分析 粘结滑移 本构模型 |
| 文章编号： | 1000-1301（2005）05-0104-08 |
| 收稿时间： | 2005-06-03 |
| 修稿时间： | 2005-06-032005-07-15 |
Seismic behavior of CFRT columns under cyclic loading Ⅱ: analytical study |
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| Li Xueping.Seismic behavior of CFRT columns under cyclic loading Ⅱ: analytical study[J].Earthquake Engineering and Engineering Vibration,2005,25(5):104-111. |
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| Authors: | Li Xueping |
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| Institution: | Li Xueping~ |
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| Abstract: | The bond-slip hysteretic models of the interface of CFRT was put forward. The hysteretic material models of in-filled concrete and steel considering Bauschinger effect were built. The analytical model for CFRT columns was also constructed. Based on section fiber model, hysteretic full range analysis program for CFRT columns considering bond-slip effect of the interface was accomplished. Full range simulation analysis of the CFRT columns was conducted and the simulating results were compared with experimental ones on the levels of load-displacement and loadstrain. As the trace of stress-strain of fiber in past research is scarce, simulation of the stress-strain of typical fiber was presented. At last, the effect of the bond strength on the hysteretic behavior on CFRT columns was analyzed. |
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| Keywords: | concrete-filled rectangular steel tube seismic behavior nonlinear analysis constitutive model |
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