四肢方圆钢管混凝土格构柱低周反复加载试验研究
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摘要
完成2个四肢方钢管混凝土格构柱和1个四肢圆钢管混凝土格构柱的低周反复加载试验。为研究方、圆钢管混凝土格构柱的破坏特征、抗震性能及更好的分析两种不同柱肢截面形式构件的抗震性能差异,各试件的尺寸采用等材料原则确定。试验结果表明:1缀管与柱肢的连接被撕裂是钢管混凝土格构柱的主要破坏形态;2方、圆钢管混凝土格构柱均有良好的综合抗震性能;3与方钢管混凝土格构柱相比,各试件的强度及延性相差不大,但圆钢管混凝土明显具有高的耗能能力及更小的刚度退化。最后,对方、圆钢管混凝土格构柱的合理应用进行探讨。
Two square concrete-filled steel tubular(CFST) laced columns and one circular CFST laced column were tested under cyclic lateral load. The size of the specimens determined using equivalent material principle in order to analyzing the differences of the failure characteristics and seismic behavior. The experimental results show that: 1 The main failure modes of CFST laced column is the tear of the lacing tubes and the column limb; 2 Both of them have excellent earthquake resistant capacities; 3 Compared with the square CFST laced column, the strength and ductility of structure are small, but the circular CFST laced column has the obvious advantage of the greater energy dissipation and smaller degradation. Finally, the reasonable application of the square and circular CFST laced columns has been discussed.
Two square concrete-filled steel tubular(CFST) laced columns and one circular CFST laced column were tested under cyclic lateral load. The size of the specimens determined using equivalent material principle in order to analyzing the differences of the failure characteristics and seismic behavior. The experimental results show that: 1 The main failure modes of CFST laced column is the tear of the lacing tubes and the column limb; 2 Both of them have excellent earthquake resistant capacities; 3 Compared with the square CFST laced column, the strength and ductility of structure are small, but the circular CFST laced column has the obvious advantage of the greater energy dissipation and smaller degradation. Finally, the reasonable application of the square and circular CFST laced columns has been discussed.
引文
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[2]尹子峰,杨冶.钢管混凝土结构在冶金重型工业厂房中的应用[J].钢结构,2002(2):28-31(Yin Zifeng,Yang Ye.Application of concrete fiied steel tube structure in heavy industrial building[J].Steel Construction,2002(2):28-31(in Chinese))
[3]吴建林,姚永.钢管混凝土组合柱在重钢结构工业厂房工程中的应用[J].建筑钢结构进展,2003(3):11-16(Wu Jianlin,Yao Yong.Application of concrete-filled steel tubularcolumns in heavy industrial construction[J].Progress in Steel Building Structures,2003(3):11-16(in Chinese))
[4]蔡绍怀.现代钢管混凝土结构[M].北京:人民交通出版社,2003
[5]陈宝春.钢管混凝土拱桥实例集(一)[M].北京:人民交通出版社,2002
[6]欧智菁,陈宝春.钢管混凝土格构柱发展和研究[J].福州大学学报,2008,36(4):585-591(Ou Zhijing,Chen Baochun.Experinental research on concrete filled stee1tubular laced columns compressed eccentrica1ly[J].Journal of Fuzhou University,2008,36(4):585-591(in Chinese))
[7]JGJ 101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997(JGJ 101—1996 Specification of testing methods for earthquake resistant building[S].Beijing:China Architecture&Building Press,1997(in Chinese))
[8]李国强.建筑结构抗震设计[M].北京:中国建筑工业出版社,2009
[9]张珂,岳清瑞,叶列平.碳纤维布加固钢筋混凝土柱滞回耗能分析及目标延性系数确定[J].工业建筑,2001,31(6):5-8(Zhang Ke,Yue Qingrui,Ye Lieping.Analysis of hystersis energy disspation and acceptable ductility factor for concrete column strengthened with CFS[J].Industrial Construction,2001,31(6):5-8(in Chinese))
[10]吴锡欣.型钢高强混凝土柱力学性能研究[D].长沙:国防科技技术大学,2006(Wu Xixin.Research of mechanics cap-ability on steel reinforced high-strength concrete column[D].Changsha:National University of Defense Technology,2006(in Chinese))
[11]邱法维,钱稼如,陈志鹏.结构抗震试验方法[M].北京:科学出版社,2000
[12]朱伯龙.结构抗震试验[M].北京:地震出版社,1989:165
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