| 高轴压比高强混凝土足尺框架柱抗震性能研究 |
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| 引用本文： | 吕西林,张国军,陈绍林.高轴压比高强混凝土足尺框架柱抗震性能研究[J].建筑结构学报,2009,30(3):20-26. |
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| 作者姓名： | 吕西林 张国军 陈绍林 |
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| 作者单位： | 同济大学土木工程防灾国家重点实验室;上海师范大学建筑工程学院; |
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| 基金项目： | 国家自然科学基金重大研究计划(90815029);;上海师范大学校级项目(DYL706) |
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| 摘 要： | 对9个高轴压比、高强纵筋、高强箍筋、高强混凝土井字箍矩形截面足尺框架柱进行了水平低周反复荷载作用下的抗震性能试验研究,讨论了其破坏机理、破坏形态和滞回特性,分析了轴压比、混凝土强度、箍筋形式及配箍率等因素对试件滞回曲线、骨架曲线、刚度、承载力及延性的影响规律。研究表明:足尺框架柱破坏时混凝土脱落较为严重;高轴压比、高强钢筋、高强混凝土矩形截面足尺框架柱的滞回曲线较为扁平,耗能亦较差,下降段较陡且延性较差;柱中部箍筋非加密区由于纵向钢筋受压失稳而发生破坏导致试件的滞回曲线很扁,且几乎没有下降段;随着混凝土强度等级提高,骨架曲线的最大荷载对应的位移和极限破坏荷载对应的位移均较小,骨架曲线的下降段亦较陡。建议对高轴压比高强混凝土框架柱应沿着整个柱高加密箍筋。
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| 关 键 词： | 低周反复荷载试验 高强混凝土框架柱 抗震性能 轴压比 足尺模型 |
| 收稿时间： | 2009-06-05 |
| 修稿时间： | 2009-06-05 |
Research on seismic behavior of full-scale high-strength concrete frame columns with high axial compression ratios |
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| LU Xilin,ZHANG Guojun,CHEN Shaolin.Research on seismic behavior of full-scale high-strength concrete frame columns with high axial compression ratios[J].Journal of Building Structures,2009,30(3):20-26. |
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| Authors: | LU Xilin ZHANG Guojun CHEN Shaolin |
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| Affiliation: | 1.State Key Laboratory for Disaster Reduction in Civil Engineering;Tongji University;Shanghai 200092;China;2.Architecture Engineering College;Shanghai Normal University;Shanghai 201418;China |
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| Abstract: | Based on experimental study on the seismic behavior of 9 full-scale high-strength concrete(HSC) rectangular frame columns with high axial compression ratios,high-strength longitudinal reinforcements and transverse reinforcements and rectangular and interlocking ties,their failure mechanism,hysteretic behavior were discussed.The effects of axial compression ratios,concrete strength,arrangement of confinement reinforcement and transverse reinforcement volume ratios on the hysteretic curves,skeleton curves,rig... |
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| Keywords: | high-strength concrete frame column full-scale model axial compression ratio low cyclic loading test seismic behavior |
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