底部加强型工字形钢管混凝土柱抗震性能研究
|
摘要
提出了工字型截面钢管混凝土柱,同时提出了一种在柱底部区域翼缘贴焊钢板的底部加强型工字形截面钢管混凝土柱。进行了3个不同构造的工字形钢管混凝土柱模型的低周反复荷载试验,模型1为普通工字形钢管混凝土柱,模型2为工字形截面两翼缘外侧贴焊钢板的钢管混凝土柱,模型3为工字形截面两翼缘周边均贴焊钢板的钢管混凝土柱。分析了各模型的破坏特征、承载力、刚度及退化过程、延性和滞回耗能特性。给出了工字形钢管混凝土柱正截面及斜截面承载力计算公式,计算结果与实测符合较好。研究表明:所提出的底部加强型工字形钢管混凝土柱与普通工字形钢管混凝土柱相比,承载力明显提高,延性和抗震耗能能力显著提高。
The I-section concrete filled steel tube(CFST) column and the bottom strengthened I-shaped cross section CFST column,in which the column flange was welded with steel plates,were proposed.Three column models with different constructions were tested under horizontal low cyclic loading.Model 1 was a conventional I-section CFST column;model 2 was an I-section CFST column with its outer part at the bottom of flange welded with steel plates;model 3 was an I-section CFST column with its surrounding part at the bottom of flange welded with steel plates.The failure characteristics,load-bearing capacity,stiffness and degradation process,ductility and hysteretic energy dissipation capacity of the models were analyzed.The calculation formula for cross section and oblique section load-bearing capacity of bottom strengthened I-shaped cross section CFST column was given,and the results obtained from the calculation are in good agreement with those from the experiments.The study shows that the load-bearing capacity,ductility and seismic energy dissipation capacity of the bottom strengthened I-section CFST column are improved obviously compared with the conventional I-section CFST column.
The I-section concrete filled steel tube(CFST) column and the bottom strengthened I-shaped cross section CFST column,in which the column flange was welded with steel plates,were proposed.Three column models with different constructions were tested under horizontal low cyclic loading.Model 1 was a conventional I-section CFST column;model 2 was an I-section CFST column with its outer part at the bottom of flange welded with steel plates;model 3 was an I-section CFST column with its surrounding part at the bottom of flange welded with steel plates.The failure characteristics,load-bearing capacity,stiffness and degradation process,ductility and hysteretic energy dissipation capacity of the models were analyzed.The calculation formula for cross section and oblique section load-bearing capacity of bottom strengthened I-shaped cross section CFST column was given,and the results obtained from the calculation are in good agreement with those from the experiments.The study shows that the load-bearing capacity,ductility and seismic energy dissipation capacity of the bottom strengthened I-section CFST column are improved obviously compared with the conventional I-section CFST column.
引文
[1]肖信文,万红宇,黄跃斌,等.平西府车辆段与综合基地复杂剪力墙结构抗震设计[J].建筑结构,2011,41(9):104-107.XIAO Xinwen,WAN Hongyu,HUANG Yuebin,et al.Seismic design of steel plate-concrete shear walls in Pingxifu vehicle depot andcomprehensive base[J].Building Structure,2011,41(9):104-107.(in Chinese)
[2]王丹,吕西林.T形、L形钢管混凝土柱抗震性能试验研究[J].建筑结构学报,2005,26(4):39-44.WANG Dan,LU Xilin.Experimental study on seismic behavior of concrete-filled steel T-section and L-section columns[J].Journal of BuildingStructures,2005,26(4):39-44.(in Chinese)
[3]林震宇,沈祖炎,罗金辉,等.反复荷载作用下L形钢管混凝土柱滞回性能研究[J].建筑钢结构进展,2009,11(2):12-17.LIN Zhenyu,SHEN Zuyan,LUO Jinhui,et al.Hysteretic behavior of concrete-filled L-section steel tubular columns under cyclic loading[J].Progress in Steel Building Structures,2009,11(2):12-17.(in Chinese)
[4]李振宇,陈志华,荣彬,等.十字形截面方钢管混凝土组合异形柱研究[J].工业建筑,2007,37(8):31-35.LI Zhenyu,CHEN Zhihua,RONG Bin,et al.Research on crisscross combined column of concrete filled square tubes[J].IndustrialConstruction,2007,37(8):31-35.(in Chinese)
[5]左志亮,蔡健,钱泉,等.带约束拉杆T形钢管混凝土短柱轴压性能的试验研究[J].土木工程学报,2011,44(11):43-51.ZUO Zhiliang,CAI Jian,QIAN Quan,et al.Experimental study on T-shaped CFT stub columns with binding bars subjected to axial compression[J].China Civil Engineering Journal,2011,44(11):43-51.(in Chinese)
[6]左志亮,蔡健,朱昌宏.带约束拉杆L形钢管混凝土短柱的偏压试验研究[J].东南大学学报,2010,40(2):346-351.ZUO Zhiliang,CAI Jian,ZHU Changhong.Experimental research on L-shape CFT stub columns with binding bars subjected to eccentriccompression[J].Journal of Southeast University,2010,40(2):346-351.(in Chinese)
[7]曹万林,彭斌,王智慧,等.底部加强型多腔钢管混凝土巨型柱抗震性能试验研究[J].地震工程与工程振动,2012,32(2):120-129.CAO Wanlin,PENG Bin,WANG Zhihui,et al.Experimental research on seismic behavior of bottom strengthened multi-cell CFST mega-columns[J].Journal of Earthquake Engineering and Engineering Vibration,2012,32(2):120-129.(in Chinese)
[8]彭斌,曹万林,王智慧,等.不同方向水平力下多腔钢管混凝土巨型柱抗震性能研究[J].世界地震工程,2012,28(2):90-97.PENG Bin,CAO Wanlin,WANG Zhihui,et al.Research on seismic behavior of multi-cell CFST mega-columns under horizontal forces in differentdirections[J].World Earthquake Engineering,2012,28(2):90-97.(in Chinese)
[9]CECS159:2004矩形钢管混凝土结构技术规程[S].CECS159:2004 Technical Specification for Structures with Concrete-filled Rectangular Steel Tube Members[S].(in Chinese)
[2]王丹,吕西林.T形、L形钢管混凝土柱抗震性能试验研究[J].建筑结构学报,2005,26(4):39-44.WANG Dan,LU Xilin.Experimental study on seismic behavior of concrete-filled steel T-section and L-section columns[J].Journal of BuildingStructures,2005,26(4):39-44.(in Chinese)
[3]林震宇,沈祖炎,罗金辉,等.反复荷载作用下L形钢管混凝土柱滞回性能研究[J].建筑钢结构进展,2009,11(2):12-17.LIN Zhenyu,SHEN Zuyan,LUO Jinhui,et al.Hysteretic behavior of concrete-filled L-section steel tubular columns under cyclic loading[J].Progress in Steel Building Structures,2009,11(2):12-17.(in Chinese)
[4]李振宇,陈志华,荣彬,等.十字形截面方钢管混凝土组合异形柱研究[J].工业建筑,2007,37(8):31-35.LI Zhenyu,CHEN Zhihua,RONG Bin,et al.Research on crisscross combined column of concrete filled square tubes[J].IndustrialConstruction,2007,37(8):31-35.(in Chinese)
[5]左志亮,蔡健,钱泉,等.带约束拉杆T形钢管混凝土短柱轴压性能的试验研究[J].土木工程学报,2011,44(11):43-51.ZUO Zhiliang,CAI Jian,QIAN Quan,et al.Experimental study on T-shaped CFT stub columns with binding bars subjected to axial compression[J].China Civil Engineering Journal,2011,44(11):43-51.(in Chinese)
[6]左志亮,蔡健,朱昌宏.带约束拉杆L形钢管混凝土短柱的偏压试验研究[J].东南大学学报,2010,40(2):346-351.ZUO Zhiliang,CAI Jian,ZHU Changhong.Experimental research on L-shape CFT stub columns with binding bars subjected to eccentriccompression[J].Journal of Southeast University,2010,40(2):346-351.(in Chinese)
[7]曹万林,彭斌,王智慧,等.底部加强型多腔钢管混凝土巨型柱抗震性能试验研究[J].地震工程与工程振动,2012,32(2):120-129.CAO Wanlin,PENG Bin,WANG Zhihui,et al.Experimental research on seismic behavior of bottom strengthened multi-cell CFST mega-columns[J].Journal of Earthquake Engineering and Engineering Vibration,2012,32(2):120-129.(in Chinese)
[8]彭斌,曹万林,王智慧,等.不同方向水平力下多腔钢管混凝土巨型柱抗震性能研究[J].世界地震工程,2012,28(2):90-97.PENG Bin,CAO Wanlin,WANG Zhihui,et al.Research on seismic behavior of multi-cell CFST mega-columns under horizontal forces in differentdirections[J].World Earthquake Engineering,2012,28(2):90-97.(in Chinese)
[9]CECS159:2004矩形钢管混凝土结构技术规程[S].CECS159:2004 Technical Specification for Structures with Concrete-filled Rectangular Steel Tube Members[S].(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心