| 管壁开孔足尺钢管混凝土柱抗震性能试验研究 |
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| 引用本文： | 马华,李美娜,王倩倩,王文静,李振宝,陈海燕.管壁开孔足尺钢管混凝土柱抗震性能试验研究[J].世界地震工程,2019,35(1):053-61. |
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| 作者姓名： | 马华 李美娜 王倩倩 王文静 李振宝 陈海燕 |
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| 作者单位： | 1. 北京工业大学 城市与工程安全减灾教育部重点实验室, 北京 100124;2. 中建科技集团有限公司, 北京 100124;3. 万达商业规划研究院有限公司, 北京 100124 |
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| 摘 要： | 针对钢筋混凝土梁与钢管混凝土柱的穿筋连接形式，研究了钢管开穿筋小孔及加固对钢管混凝土柱抗震性能的影响。对于未开孔、开孔和开孔并加固三种情况，进行了3个直径为610 mm的足尺钢管混凝土柱试件的低周反复荷载试验。试验结果表明:未开孔试件在距根部100 mm处发生钢管屈曲破坏；开孔试件的破坏主要是开孔处屈曲撕裂，开孔对钢管混凝土柱初期刚度和峰值承载力影响不大，但在峰值承载力后受孔边撕裂破坏影响，开孔试件的刚度和强度退化较快、延性和耗能能力降低；开孔并加固试件的破坏位置上移至加固段上部约90 mm处，与未开孔试件表现出相似的抗震性能。
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| 关 键 词： | 足尺 钢管混凝土柱 开孔 加固 抗震性能 |
Experimental study on seismic performance of full-scale concrete-filled steel tube columns with openings in the steel tube wall |
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| MA Hua,LI Meina,WANG Qianqian,WANG Wenjing,LI Zhenbao,CHEN Haiyan.Experimental study on seismic performance of full-scale concrete-filled steel tube columns with openings in the steel tube wall[J].World Information On Earthquake Engineering,2019,35(1):053-61. |
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| Authors: | MA Hua LI Meina WANG Qianqian WANG Wenjing LI Zhenbao CHEN Haiyan |
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| Institution: | 1. Beijing University of Technology, Key Laboratory of Urban Security and Disaster Engineering of Education Ministry, Beijing 100124, China;2. China Construction Technology Group Co., Ltd., Beijing 100124, China;3. Wanda Business Planning Institute Co., Ltd., Beijing 100124, China |
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| Abstract: | For the connection form of rebar perforation between reinforced concrete beam and concrete-filled steel tube (CFST),the effects of the seismic performances of CFST columns with and without holes by rebar penetration on the tube wall and reinforcement for the holes were studied.Low-cyclic repeated loading tests were carried out on three full-scale CFST columns with diameter of 610 mm.Among the specimens,one is designed without opening holes,another is with opening holes and the last one is with opening holes and reinforcements.The results show that local buckling failure is occurred for the specimen without opening holes at the location of 100 mm from the root of column.The failure of the specimen with holes is the buckling and tear at the edge of holes.Small holes by rebar penetration have little influence on the initial stiffness and peak load capacity of the CFST column.However,after the peak load,due to the tearing damage at the edge of holes,the stiffness and strength of the specimen deteriorate rapidly,and both the ductility and energy dissipation capacity of the specimen decrease.The failure position of the CFST column with reinforcement is located at 90 mm above the reinforcement section,and this specimen shows similar seismic performance with the CFST column without holes. |
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| Keywords: | full scale concrete-filled steel tube columns openings reinforcements seismic performance |
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