| 方钢管混凝土框架加固后的非线性有限元分析——受低周反复荷载作用 |
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| 引用本文： | 辛立民,王铁成,张凌.方钢管混凝土框架加固后的非线性有限元分析——受低周反复荷载作用[J].自然灾害学报,2007,16(4):115-120. |
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| 作者姓名： | 辛立民 王铁成 张凌 |
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| 作者单位： | 天津大学建工学院,天津300072 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 建立了加固后损伤方钢管混凝土框架的三维非线性有限元分析模型，用以研究该框架在低周反复荷载作用下的抗震性能。该模型考虑了钢与混凝土的黏滑作用。通过与损伤方钢管混凝土框架加固后的结构在低周反复荷载作用下滞回曲线和刚度退化曲线的对比表明，计算结果较为精确，该模型可以应用于方钢管混凝土框架的结构分析中。同时由试验和有限元分析计算的结果可知，损伤方钢管混凝土框架结构加固后，具有较好的抗震性能。
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| 关 键 词： | 损伤 加固修复 抗震性能 方钢管混凝土框架 滞回性能 非线性有限元分析 |
| 文章编号： | 1004-4574（2007）04-0115-06 |
| 收稿时间： | 2007-04-10 |
| 修稿时间： | 2007-04-102007-06-10 |
Nonlinear finite element analysis of repaired concrete-filled rectangular tubular frame under low-cyclic reversed loading |
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| XIN Li-min,WANG Tie-cheng,ZHANG Ling.Nonlinear finite element analysis of repaired concrete-filled rectangular tubular frame under low-cyclic reversed loading[J].Journal of Natural Disasters,2007,16(4):115-120. |
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| Authors: | XIN Li-min WANG Tie-cheng ZHANG Ling |
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| Institution: | School of Civil Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | A 3-D nonlinear finite element model for repaired concrete-filled rectangular steel tubular frame(CRSTRF) is proposed in this paper to research the seismic behavior of this type of structure under low-cyclic reversed loading.The bond-slip action between steel and concrete has been taken into account in the model.Compared with the experimental hysteresis curve and stiffness degradation curve,the computational results are found to be accurate,which shows that the model proposed in the paper can be applied to structure analysis of repaired concrete-filled rectangular steel tubular frames.From the analysis of test results and theoretical calculation ones,it can be concluded that the repaired concrete-filled rectangular steel tubular frame has a better seismic performance. |
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| Keywords: | damage strengthening and repairing seismic behavior concrete-filled rectangular steel tubular frame hysteretic behavior non-linear finite element analysis |
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