| 强约束大尺寸钢筋混凝土柱抗震性能试验研究 |
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| 引用本文： | 张微敬, 张兵, 李振宝, 周宏宇. 强约束大尺寸钢筋混凝土柱抗震性能试验研究[J]. 工程力学, 2013, 30(12): 236-241. DOI: 10.6052/j.issn.1000-4750.2013.02.0123 |
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| 作者姓名： | 张微敬 张兵 李振宝 周宏宇 |
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| 作者单位： | 北京工业大学建筑工程学院，北京100124 |
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| 基金项目： | 十一五国家科技支撑计划项目(2009BAJ28B01) |
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| 摘 要： | 为研究箍筋强约束钢筋混凝土柱的抗震性能，完成了6个配箍特征值0.34~0.44、截面尺寸450mm#x000d7;450mm的大尺寸钢筋混凝土柱试件的拟静力试验研究。结果表明，试件的破坏形态为压弯破坏，纵筋压曲甚至断裂，部分试件箍筋拉断，底部1倍柱截面高度范围内混凝土保护层剥落，箍筋约束核心区混凝土局部压碎。试件水平力-位移滞回曲线饱满，极限位移角达到1/39~1/33，延性系数均大于3.0。对于箍筋强约束柱，改变箍筋形式或改变箍筋肢距，对其正截面承载力及极限变形能力影响不大；相同位移往复加载由3次增加至5次，对其正截面承载力及峰值位移影响不大，但变形能力降低约15%。
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| 关 键 词： | 箍筋强约束 大尺寸 钢筋混凝土柱 抗震性能 拟静力试验 |
| 收稿时间： | 2013-02-08 |
| 修稿时间： | 2013-05-13 |
EXPERIMENTAL STUDY ON SEISMIC PERFORMANCE OF LARGE SCALE REINFORCED CONCRETE COLUMNS WITH STRONG CONFINEMENT |
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| ZHANG Wei-jing, ZHANG Bing, LI Zhen-bao, ZHOU Hong-yu. EXPERIMENTAL STUDY ON SEISMIC PERFORMANCE OF LARGE SCALE REINFORCED CONCRETE COLUMNS WITH STRONG CONFINEMENT[J]. Engineering Mechanics, 2013, 30(12): 236-241. DOI: 10.6052/j.issn.1000-4750.2013.02.0123 |
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| Authors: | ZHANG Wei-jing ZHANG Bing LI Zhen-bao ZHOU Hong-yu |
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| Affiliation: | College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China |
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| Abstract: | To investigate the seismic performance of reinforced concrete columns with strong confinement, quasi-static tests on six full-scale reinforced concrete columns with stirrup characteristic values in the range of 0.34~0.44 and with section dimension 450mm#x000d7;450mm were conducted. The test results indicated that the failure modes of specimens were compression-bending; the longitudinal bars buckled in compression and even broke; several stirrups fractured. Within a height of one time of column depth above the column bottom the concrete cover spalled seriously and the confined concrete partially crushed. The lateral force-displacement hysteretic loops were plump, the ultimate drift ratios ranged from 1/39 to 1/33 and the ductility coefficients were greater than 3. Changing the stirrup types or changing the space of stirrup legs had little effects on the load-carrying capacity and ultimate deformation capacity of specimens. Increasing the number of lateral loading cycle from 3 to 5 had little effects on the load-carrying capacity and peak deformation of specimens, but led to about 15% decrease of the deformation capacity. |
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| Keywords: | strong confinement full-scale reinforced concrete column seismic performance quasi-static test |
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