配筋圆钢管自密实混凝土柱抗震性能试验研究

doi:10.11835/j.issn.1674-4764.2018.04.022

首页 > 过刊浏览>2018年第40卷第4期 >159-167. DOI:10.11835/j.issn.1674-4764.2018.04.022

配筋圆钢管自密实混凝土柱抗震性能试验研究
DOI:
                        10.11835/j.issn.1674-4764.2018.04.022
                    
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                        龚田牛龚田牛
湖北文理学院 土木工程与建筑学院, 湖北 襄阳 441053;武汉大学 土木建筑工程学院, 武汉 430072
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秦丽秦丽
湖北文理学院 土木工程与建筑学院, 湖北 襄阳 441053
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潘洪科潘洪科
湖北文理学院 土木工程与建筑学院, 湖北 襄阳 441053
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中图分类号:TU398.9
基金项目:湖北省教育厅科学技术研究项目（Q20162602）

Experimental study on seismic behaviors of reinforced self compacting concrete filled circular steel tube columns

Author:

Gong Tianniu
Gong Tianniu
School of Civil Engineering and Architecture, Hubei University of Arts and Science, Xiangyang 430072, Hubei, P. R. China;School of Civil Engineering, Wuhan University, Wuhan 430072, P. R. China
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Qin Li
Qin Li
School of Civil Engineering and Architecture, Hubei University of Arts and Science, Xiangyang 430072, Hubei, P. R. China
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Pan Hongke
Pan Hongke
School of Civil Engineering and Architecture, Hubei University of Arts and Science, Xiangyang 430072, Hubei, P. R. China
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摘要:

通过7根配筋圆钢管自密实混凝土柱和1根圆钢管自密实混凝土对比柱的低周反复荷载试验，研究了纵筋配筋率、轴压比和钢管壁厚对配筋圆钢管自密实混凝土柱的承载力、延性、耗能能力和性能退化规律的影响。试验结果表明：配筋圆钢管自密实混凝土试件的滞回曲线饱满，表现出良好的抗震性能，在加载中后期，配筋试件的纵筋屈服，强度得到发挥，配筋圆钢管自密实混凝土试件的承载力和延性较普通圆钢管自密实混凝土试件均有不同程度提高，同时，耗能性能提高，且纵筋配筋率越大，配筋圆钢管自密实混凝土试件的承载力和延性也越大。轴压比和钢管壁厚对配筋圆钢管自密实混凝土柱抗震性能的影响规律与普通圆钢管混凝土柱相同。

关键词:钢管混凝土;抗震性能;低周反复荷载;试验研究

Abstract:

The behavior of reinforced self compacting concrete filled circular steel tube (RCFST) columns under seismic load was investigated by testing 1 concrete filled circular steel tube (CFST) column and 7 RCFST columns which were subjected to a constant axial loading and a cyclic lateral loading. The effects of the reinforcement ratio, the axial loading level and the steel ratio on the strength, ductility and energy dissipation of the RCFST columns were studied. The experimental results indicate that the hysteretic curves of RCFST columns were plump, and they demonstrated good seismic performance.In the following loading periods, the longitudinal reinforcement of RCFST columns yield, and their strength was efficiently mobilized. RCFST columns display an obvious increase in the strength, ductility and energy dissipation with the increase of reinforcement ratio. The effects of the axial loading level and the steel ratio on the seismic performance of RCFST column were similar to CFST column.

Key words:concrete filled steel tube;seismic performance;low-frequency cyclic load;experimental study

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引用本文

龚田牛,秦丽,潘洪科.配筋圆钢管自密实混凝土柱抗震性能试验研究[J].土木与环境工程学报（中英文）,2018,40(4):159-167. Gong Tianniu, Qin Li, Pan Hongke. Experimental study on seismic behaviors of reinforced self compacting concrete filled circular steel tube columns[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2018,40(4):159-167.10.11835/j. issn.1674-4764.2018.04.022

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收稿日期:2017-08-09
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在线发布日期: 2018-07-05
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