腔内带钢筋笼多腔钢管混凝土巨型柱轴压性能试验研究
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摘要
以某超高层巨型框架结构巨型柱为原型,进行了3个多腔钢管混凝土巨型柱模型试件的轴压性能试验研究,模型按1/12缩尺。3个试件的几何尺寸和腔体钢板均一致,各试件主要参数:试件1腔内加设钢筋笼,混凝土强度等级为C30;试件2腔内不加设钢筋笼,混凝土强度等级为C40;试件3腔内加设钢筋笼,混凝土强度等级为C40。试验分析了各试件的承载力、刚度及退化过程、残余变形、破坏特征等。研究表明:腔内设置钢筋笼的多腔钢管混凝土巨型柱具有良好的延性和抗压工作性能,可用于工程设计。
According to a mega-column from a super high-rise mega-frame structure,three 1/12 scaled multicell CFST mega-column models were tested under axial compression.All the geometric dimensions and the steel plates of the three specimens were same with eachother.Specimen 1 was made from concrete C30 with steel reinforcement cage inside;specimen 2 was made from concrete C40 without steel reinforcement cage; specimen 3 was made from concrete C40 with steel reinforcement cage inside.The load-bearing capacity,stiffness and its degeneration,residual deformation and failure characteristic of models have been compared and analyzed.The study shows that the multi-cell CFST mega-column with steel reinforcement cage inside has good ductility and good compression work performance.And it can be used in the design practical of engineering.
According to a mega-column from a super high-rise mega-frame structure,three 1/12 scaled multicell CFST mega-column models were tested under axial compression.All the geometric dimensions and the steel plates of the three specimens were same with eachother.Specimen 1 was made from concrete C30 with steel reinforcement cage inside;specimen 2 was made from concrete C40 without steel reinforcement cage; specimen 3 was made from concrete C40 with steel reinforcement cage inside.The load-bearing capacity,stiffness and its degeneration,residual deformation and failure characteristic of models have been compared and analyzed.The study shows that the multi-cell CFST mega-column with steel reinforcement cage inside has good ductility and good compression work performance.And it can be used in the design practical of engineering.
引文
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[11]同济大学,浙江杭萧钢结构股份有限公司.CECS 159:2004矩形钢管混凝土结构技术规程[S].北京:中国计划出版社,2004. Tongji University,Hangxiao Steel Structure.CECS 159:2004 Technical specification for structures with concrete-filled rectangular steel tube members[S]. Beijing:China Planning Press,2004.(in Chinese)
[2]董毅,袁勇.基于微平面模型的钢管混凝土柱承载力有限元模拟[J].结构工程师,2009,25(4):41- 47. Dong Yi,Yuan Yong.Finite element simulation of concrete-filled steel tube columns based on microplane model[J].Structural Engineers,2009,25(4):41- 47.(in Chinese)
[3]曹万林,樊太,张维斌,等.钢骨混凝土异形截面柱抗震性能试验及分析[J].土木工程学报,2007,40 (1):20-27. Cao Wanlin,Fan Tai,Zhang Weibin,et al.Test and analysis of the seismic performance of SRC columns of irregular sections[J].China Civil Engineering Journal, 2007,40(1):20-27.(in Chinese)
[4]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 Building Structures, 2005,26(4):39-44.(in Chinese)
[5]李学平,吕西林.T、L形钢管混凝土柱的本构模型及非线性分析研究[J].建筑钢结构进展,2008,10 (4):56-62. Li Xueping,Lu Xilin.Modelling and experimental verification on concrete-filled steel tubular columns with T or L section[J].Progress in Steel Building Structures,2008,10(4):56-62.(in Chinese)
[6]郑新志.带约束拉杆T形钢管混凝土柱偏心受压性能的试验研究[J].结构工程师,2011,27(s1): 140-145. Zheng Xinzhi.Experimental research on compressive behavior of T-shaped concrete-filled steel tubular stub columns with binding bars[J].Structural Engineers, 2011,27(si):140-145.(in Chinese)
[7]陈志华,李振宇,荣彬,等.十字形截面方钢管混凝土组合异形柱轴压承载力试验[J].天津大学学报,2006,39(11):1275-1282. Chen Zhihua,Li Zhenyu,Rong Bin,et al.Experiment of axial compression bearing capacity for crisscross section special-shaped column composed of concrete -filled square steel tubes[J].Journal of Tianjin University,2006,39(11):1275-1282.(in Chinese)
[8]陈志华,荣彬.L形方钢管混凝土组合异形柱的轴压稳定性研究[J].建筑结构,2009,39(6):39-43. Chen Zhihua,Rong Bin.Research on axial compression stability of L-shaped column composed of concrete -filled square steel tubes[J].Building Structure, 2009,39(6):39-43.(in Chinese)
[9]刘习超,查晓雄.椭圆形钢管混凝土构件性能的研究Ⅰ:轴压短柱和长柱[J].建筑钢结构进展,2011, 13(1):8-14. Liu Xichao,Zha Xiaoxiong.Study on behavior of elliptical concrete filled steel tube membersⅠ:stub and long columns under axial compression[J].Progress in Steel Building Structures,2011,13(1):8- 14.(in Chinese)
[10]曹万林,关美荣,王立长,等.多腔扁钢管混凝土斜折柱抗震性能试验研究[J].地震工程与工程振动,2011,31(5):39-42. Cao Wanlin,Guan Meirong,Wang Lichang,et al. Experimental study on seismic performance of multicavity flat concrete filled steel tube column with gambrel [J].Journal of Earthquake Engineering and Engineering Vibration,2011,31(5 ):39^12.(in Chinese)
[11]同济大学,浙江杭萧钢结构股份有限公司.CECS 159:2004矩形钢管混凝土结构技术规程[S].北京:中国计划出版社,2004. Tongji University,Hangxiao Steel Structure.CECS 159:2004 Technical specification for structures with concrete-filled rectangular steel tube members[S]. Beijing:China Planning Press,2004.(in Chinese)
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