不锈钢管混凝土短柱轴压承载力试验研究
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摘要
对9根奥氏体型和9根双相型不锈钢管混凝土短柱进行轴压试验,测得了短柱在轴压作用下的极限荷载、纵向应变和环向应变等,重点考察了钢管壁厚和混凝土强度对短柱承载性能的影响,并参考普通钢管混凝土设计规程欧洲规程(Eurocode 4)、美国规程(ACI 318-99)、日本规程(AIJ-CFT),我国相关规程DBJ 13-51―2003、DL/T5085―1999和CECS 28:2012计算了不锈钢管混凝土短柱的承载力并进行对比分析。结果表明,不锈钢管混凝土轴压短柱在核心混凝土强度等级相同的情况下,构件承载力随钢管壁厚的增加而增大,混凝土强度对其有影响。6种规程在计算不锈钢管混凝土短柱承载力时偏于安全,其中CECS28:2012更接近试验结果,该文成果对不锈钢管混凝土短柱承载力的设计有一定的参考意义。
The loading capacity of nine concrete filled austenitic stainless-steel tube short columns and nine concrete filled duplex stainless-steel tube short columns for their axial compression tests were investigated. The ultimate load-bearing capacity, longitudinal strains, and circumferential strains were tested, and emphatically investigated the influence of bearing capacity of the short columns. In addition, the design codes of common concrete filled steel tubes for European Code(Eurocode 4), American Code(ACI 318-99), Japanese Code(AIJ-CFT), Chinese Code DBJ 13-51-2003, DL/T 5085-1999 and CECS 28: 2012 were referred to calculating the bearing capacity of concrete filled stainless steel tube short columns, and analyzed the differences between tests and calculating results. The results indicate that: under the condition of the same strength of core concrete, the bearing capacity of the member increases with the increase of steel tube wall thickness under the same strength grade of core concrete, and the strength of concrete also has an effect on the capacity. The calculating results of the six codes for concrete filled stainless steel tube short columns are rather safe. The result of CECS 28: 2012 code is closer to that of the test. Thusly, the research results can provide a reference for the design of concrete filled stainless steel tube short columns.
The loading capacity of nine concrete filled austenitic stainless-steel tube short columns and nine concrete filled duplex stainless-steel tube short columns for their axial compression tests were investigated. The ultimate load-bearing capacity, longitudinal strains, and circumferential strains were tested, and emphatically investigated the influence of bearing capacity of the short columns. In addition, the design codes of common concrete filled steel tubes for European Code(Eurocode 4), American Code(ACI 318-99), Japanese Code(AIJ-CFT), Chinese Code DBJ 13-51-2003, DL/T 5085-1999 and CECS 28: 2012 were referred to calculating the bearing capacity of concrete filled stainless steel tube short columns, and analyzed the differences between tests and calculating results. The results indicate that: under the condition of the same strength of core concrete, the bearing capacity of the member increases with the increase of steel tube wall thickness under the same strength grade of core concrete, and the strength of concrete also has an effect on the capacity. The calculating results of the six codes for concrete filled stainless steel tube short columns are rather safe. The result of CECS 28: 2012 code is closer to that of the test. Thusly, the research results can provide a reference for the design of concrete filled stainless steel tube short columns.
引文
[1]王吉忠,刘连鹏,叶浩.钢管-混凝土组合柱在我国的研究进展与展望[J].水利与建筑工程学报,2014,12(4):143―149.Wang Jizhong,Liu Lianpeng,Ye Hao.The research progress and prospect of steel tube-concrete composite column in China[J].Journal of Water Resources and Architectural Engineering,2014,12(4):143―149.(in Chinese)
[2]蔡绍怀,焦占拴.钢管混凝土短柱的基本性能和强度计算[J].建筑结构学报,1984,5(6):13―29.Cai Shaohuai,Jiao Zhanshuan.Behavior and ultimate strength of short concrete-filled steel tubular columns[J].Journal of Building Structures,1984,5(6):13―29.(in Chinese)
[3]韩林海,杨有福.现代钢管混凝土结构技术[M].北京:中国建筑工业出版社,2007:8-17.Han Linhai,Yang Youfu.Modern concrete filled steel tubular structure and technology[M].Beijing:China Architecture Industry Press,2007:8-17.(in Chinese)
[4]Hu H T,Asce M,Huang C S,et al.Nonlinear analysis of axially loaded concrete-filled tube columns with confinement effect[J].Journal of Structural Engineering,2003,129(10):1322―1329.
[5]张耀春,王秋萍,毛小勇,等.薄壁钢管混凝土短柱轴压力学性能试验研究[J].建筑结构,2005,35(1):22―27.Zhang Yaochun,Wang Qiuping,Mao Xiaoyong,et al.Research on mechanics behavior of stub-column of concrete-filled thin-walled steel tube under axial load[J].Building Structure,2005,35(1):22―27.(in Chinese)
[6]李斌.钢管混凝土结构的研究[D].西安:西安建筑科技大学,2004.Li Bin.Research of concrete-filled steel tube structure[D].Xi’an:Xi’an University of Architecture and Technology,2004.
[7]Ellobody E,Young B,Lam D.Behaviour of normal and high strength concrete-filled compact steel tube circular stub columns[J].Journal of Constructional Steel Research,2006,62(7):706―715.
[8]占美森.薄壁钢管混凝土柱轴心受压承载性能研究[D].南昌:南昌大学,2007.Zhan Meisen.Research on capacity and behavior of concrete filled thin walled steel tube column under axial compression[D].Nanchang:Nanchang University,2007.(in Chinese)
[9]江枣,钱稼茹.钢管混凝土短柱轴心受压承载力与钢管作用研究[J].建筑结构,2010,40(8):94―98.Jiang Zao,Qian Jiaru.Study on compressive strength and steel tube functions of centrally loaded short concrete filled-steel tube columns[J].Building Structure,2010,40(8):94―98.(in Chinese)
[10]Lam D,Gardner L.Structural design of stainless-steel concrete filled columns[J].Journal of Constructional Steel Research,2008,64(11):1275―1282.
[11]Young B,Ellobody E.Experimental investigation of concrete-filled cold-formed high strength stainless steel tube columns[J].Journal of Constructional Steel Research,2006,62(5):484―492.
[12]廖飞宇.圆不锈钢管混凝土轴压力学性能的有限元分析[J].福建农林大学学报(自然版),2009,38(6):659―662.Liao Feiyu.Finite element analysis for circular concrete-filled stainless steel tubular column under axial compression[J].Journal of Fujian Agriculture and Forestry University(Natural Science Edition),2009,38(6):659―662.(in Chinese)
[13]胡成玺.不锈钢管混凝土柱承载力分析[D].西安:西安建筑科技大学,2010.Hu Chengxi.The analysis of bearing capacity of concrete filled stainless steel tube columns[D].Xi’an:Xi’an University of Architecture and Technology,2010.(in Chinese)
[14]Eurocode 4,Design of composite steel and concrete structures,(Part 1-1):General rules and rules for buildings[S].London:British Standards Institution,1994.
[15]ACI 318―99,Building code requirements for structural concrete and commentary[S].Detroit:American Concrete Institute,1999.
[16]AIJ-CFT,Recommendations for design and construction of concrete filled steel tubular structures[S].Tokyo:Architectural Institute of Japan,1997.
[17]DBJ 13-51―2003,钢管混凝土结构技术规程[S].福州:福建省建设厅,2003.DBJ 13-51―2003,Technical specification for concrete-filled steel tubular[S].Fuzhou:Fujian Provincial Department of Construction,2003.(in Chinese)
[18]DL/T 5085―1999,钢-混凝土组合结构设计规程[S].北京:中国电力出版社,1999.DL/T 5085―1999,Code for design of steel-concrete composite structure[S].Beijing:China Electric Power Press.(in Chinese)
[19]CECS 28:2012,钢管混凝土结构技术规程[S].北京:中国计划出版社,2012.CECS 28:2012,Technical specification for concrete-filled steel tubular[S].Beijing:China Planning Press,1992.(in Chinese)
[20]GB/T 228.1―2010,金属材料拉伸试验第一部分:室温试验方法[S].北京:中国标准出版社,2010.GB/T 228.1―2010,Metallic materials-tensile testingPart 1:Method of test at room temperature[S].Beijing:Standards Press of China,2010.(in Chinese)
[2]蔡绍怀,焦占拴.钢管混凝土短柱的基本性能和强度计算[J].建筑结构学报,1984,5(6):13―29.Cai Shaohuai,Jiao Zhanshuan.Behavior and ultimate strength of short concrete-filled steel tubular columns[J].Journal of Building Structures,1984,5(6):13―29.(in Chinese)
[3]韩林海,杨有福.现代钢管混凝土结构技术[M].北京:中国建筑工业出版社,2007:8-17.Han Linhai,Yang Youfu.Modern concrete filled steel tubular structure and technology[M].Beijing:China Architecture Industry Press,2007:8-17.(in Chinese)
[4]Hu H T,Asce M,Huang C S,et al.Nonlinear analysis of axially loaded concrete-filled tube columns with confinement effect[J].Journal of Structural Engineering,2003,129(10):1322―1329.
[5]张耀春,王秋萍,毛小勇,等.薄壁钢管混凝土短柱轴压力学性能试验研究[J].建筑结构,2005,35(1):22―27.Zhang Yaochun,Wang Qiuping,Mao Xiaoyong,et al.Research on mechanics behavior of stub-column of concrete-filled thin-walled steel tube under axial load[J].Building Structure,2005,35(1):22―27.(in Chinese)
[6]李斌.钢管混凝土结构的研究[D].西安:西安建筑科技大学,2004.Li Bin.Research of concrete-filled steel tube structure[D].Xi’an:Xi’an University of Architecture and Technology,2004.
[7]Ellobody E,Young B,Lam D.Behaviour of normal and high strength concrete-filled compact steel tube circular stub columns[J].Journal of Constructional Steel Research,2006,62(7):706―715.
[8]占美森.薄壁钢管混凝土柱轴心受压承载性能研究[D].南昌:南昌大学,2007.Zhan Meisen.Research on capacity and behavior of concrete filled thin walled steel tube column under axial compression[D].Nanchang:Nanchang University,2007.(in Chinese)
[9]江枣,钱稼茹.钢管混凝土短柱轴心受压承载力与钢管作用研究[J].建筑结构,2010,40(8):94―98.Jiang Zao,Qian Jiaru.Study on compressive strength and steel tube functions of centrally loaded short concrete filled-steel tube columns[J].Building Structure,2010,40(8):94―98.(in Chinese)
[10]Lam D,Gardner L.Structural design of stainless-steel concrete filled columns[J].Journal of Constructional Steel Research,2008,64(11):1275―1282.
[11]Young B,Ellobody E.Experimental investigation of concrete-filled cold-formed high strength stainless steel tube columns[J].Journal of Constructional Steel Research,2006,62(5):484―492.
[12]廖飞宇.圆不锈钢管混凝土轴压力学性能的有限元分析[J].福建农林大学学报(自然版),2009,38(6):659―662.Liao Feiyu.Finite element analysis for circular concrete-filled stainless steel tubular column under axial compression[J].Journal of Fujian Agriculture and Forestry University(Natural Science Edition),2009,38(6):659―662.(in Chinese)
[13]胡成玺.不锈钢管混凝土柱承载力分析[D].西安:西安建筑科技大学,2010.Hu Chengxi.The analysis of bearing capacity of concrete filled stainless steel tube columns[D].Xi’an:Xi’an University of Architecture and Technology,2010.(in Chinese)
[14]Eurocode 4,Design of composite steel and concrete structures,(Part 1-1):General rules and rules for buildings[S].London:British Standards Institution,1994.
[15]ACI 318―99,Building code requirements for structural concrete and commentary[S].Detroit:American Concrete Institute,1999.
[16]AIJ-CFT,Recommendations for design and construction of concrete filled steel tubular structures[S].Tokyo:Architectural Institute of Japan,1997.
[17]DBJ 13-51―2003,钢管混凝土结构技术规程[S].福州:福建省建设厅,2003.DBJ 13-51―2003,Technical specification for concrete-filled steel tubular[S].Fuzhou:Fujian Provincial Department of Construction,2003.(in Chinese)
[18]DL/T 5085―1999,钢-混凝土组合结构设计规程[S].北京:中国电力出版社,1999.DL/T 5085―1999,Code for design of steel-concrete composite structure[S].Beijing:China Electric Power Press.(in Chinese)
[19]CECS 28:2012,钢管混凝土结构技术规程[S].北京:中国计划出版社,2012.CECS 28:2012,Technical specification for concrete-filled steel tubular[S].Beijing:China Planning Press,1992.(in Chinese)
[20]GB/T 228.1―2010,金属材料拉伸试验第一部分:室温试验方法[S].北京:中国标准出版社,2010.GB/T 228.1―2010,Metallic materials-tensile testingPart 1:Method of test at room temperature[S].Beijing:Standards Press of China,2010.(in Chinese)