| 预应力CFRP加固混凝土柱抗震性能的数值分析 |
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| 引用本文： | 周长东,张蝶.预应力CFRP加固混凝土柱抗震性能的数值分析[J].北方交通大学学报,2010(1):35-39. |
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| 作者姓名： | 周长东 张蝶 |
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| 作者单位： | [1]北京交通大学土木建筑工程学院,北京100044 [2]同济大学土木工程防灾国家重点实验室,上海200092 |
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| 基金项目： | 国家自然科学基金资助项目（50978021）;同济大学土木工程防灾国家重点实验室开放基金资助项目（SLDRCE08-NB-OI） |
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| 摘 要： | 采用预应力CFRP片材加固钢筋混凝土柱，可以提高柱的抗震性能．本文采用有限元分析软件ANSYS，对预应力CFRP片材加固钢筋混凝土柱的低周反复荷载试验过程进行了数值模拟分析，提出了分析同类问题的有限元算法，研究了预应力大小对预应力FRP片材加固钢筋混凝土柱抗震性能的影响，分析了预应力FRP片材加固钢筋混凝土柱的破坏机理．分析结果表明：随着FRP片材预应力度的增加，被加固柱的滞回曲线趋于饱满，滞回环的外包面积增大，延性增加，其耗能能力和抗震性能显著提高．
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| 关 键 词： | 混凝土柱 抗震性能 有限元 预应力碳纤维复合材料 加固 |
Numerical Analysis of Seismic Behavior of RC Columns Strengthened with Lateral Pre-Tensioning CFRP Sheets |
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| ZHOU Changdong,ZHANG Die.Numerical Analysis of Seismic Behavior of RC Columns Strengthened with Lateral Pre-Tensioning CFRP Sheets[J].Journal of Northern Jiaotong University,2010(1):35-39. |
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| Authors: | ZHOU Changdong ZHANG Die |
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| Institution: | 1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China) |
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| Abstract: | The seismic behavior of RC（reinforced concrete） columns can be enhanced with pre-tensioned CFRP sheets. Whole low cycle reversed loading process of RC columns strengthened with prestressed CFRP sheets is simulated with the finite element analysis software ANSYS. And a finite element method is described. On this basis, through using different degrees of pretension as the varying parameters, the seismic behavior of RC columns strengthened with pre-stressed CFRP sheets is simulated and analyzed. Then, the failure mechanism of concrete columns strengthened with pre-stressed CFRP is studied. The finite element analysis results of hysteretic curves show that the ductility, dissipative energy and seismic behavior improved obviously with the pre-tension of FRP sheets. |
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| Keywords: | concrete column seismic behavior finite element pre-tensioning CFRP strengthen |
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