高强冷弯薄壁型钢双面覆板墙体立柱轴压性能试验研究
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摘要
近年来,随着轻钢结构体系的迅速发展,高强冷弯薄壁型钢在国外实际工程中得到了推广和应用,如澳洲各国在低层冷弯型钢住宅体系中采用名义屈服强度高达550MPa的高强冷弯薄壁型钢且获得了良好的经济效益。鉴于高强冷弯薄壁型钢优良的结构性能,我国也开始对高强钢材的受力性能和应用进行研究。
本文通过对6根高强冷弯薄壁型钢双面覆板墙体立柱进行足尺轴压试验,得到了立柱的极限承载力和破坏模态,以此作为立柱理论分析的重要依据。根据试验实际,本文利用大型有限元分析软件ANSYS建立了墙体立柱分析模型,在有限元分析模型充分得到试验验证的情况下,对影响墙体立柱轴压承载力的立柱间距、石膏板厚度、墙面板的类型、钢板接缝、螺钉间距和拉条等因素进行了参数分析,得出了一些有益结论,可供设计参考。
本文在分析试验现象和有限元破坏模式的基础上,按照中国规范GB50018-2002取计算长度分别为两倍螺钉间距和单倍螺钉间距进行了立柱的稳定承载力计算,同时按强度破坏对立柱进行了轴压承载力计算。通过计算分析,提出了实际工程中设计墙体立柱的建议方法。建议计算方法计算立柱承载力与试验结果相比偏于安全,且计算简单、便于设计操作,可供工程设计人员参考。
As the development of light gauge steel structure system rapidly in recently years, high strength cold-formed steel has been widely used abroad such as countries in Australia. It has got high economic efficiency to use 550MPa high strength cold-formed steel in cold-formed steel framing system buildings. For its superior performances, China also began to study its performances under load and application in the engineering.
An experimental study on six full-size 550MPa high strength cold-formed steel wall studs lined with wallboard on both sides subjected to centric axial loads is carried out in this paper. The load carrying capacity and failure mode of the wall studs are obtained from the experiment. It is the basis of stud's theorical analysis. Based on the test, the finite element analysis model is established. A parameter analysis about the spacing of studs, the thickness of plasterboard, the type of wallboards, the overlap seams of steel rib panels, the spacing of screws and the plate strips of the wall studs subjected to centric axial loads is carried out after the finite element analysis model has been verified by test data. The analysis results can be for design reference.
Through the analysis of test indication and failure mode, there are two methods to estimate the load carrying capacity of the wall studs calculated by using "Technical code of cold-formed thin-walled steel structures"(GB50018- 2002). One method is the load carrying capacity determined by buckling of the stud and taking the effective length of stud as double spacing of screws. The other one is the load carrying capacity determined by the failure of stud strength. Best on the analysis, a suggested method to design the cold-formed steel wall studs with wallboard on both sides under axial compression has been put forward in the paper. The suggested method is safe to be used to calculate the load carrying capacity of the wall studs. What is more, the suggested method can also be accepted and used easily by designers.
本文通过对6根高强冷弯薄壁型钢双面覆板墙体立柱进行足尺轴压试验,得到了立柱的极限承载力和破坏模态,以此作为立柱理论分析的重要依据。根据试验实际,本文利用大型有限元分析软件ANSYS建立了墙体立柱分析模型,在有限元分析模型充分得到试验验证的情况下,对影响墙体立柱轴压承载力的立柱间距、石膏板厚度、墙面板的类型、钢板接缝、螺钉间距和拉条等因素进行了参数分析,得出了一些有益结论,可供设计参考。
本文在分析试验现象和有限元破坏模式的基础上,按照中国规范GB50018-2002取计算长度分别为两倍螺钉间距和单倍螺钉间距进行了立柱的稳定承载力计算,同时按强度破坏对立柱进行了轴压承载力计算。通过计算分析,提出了实际工程中设计墙体立柱的建议方法。建议计算方法计算立柱承载力与试验结果相比偏于安全,且计算简单、便于设计操作,可供工程设计人员参考。
As the development of light gauge steel structure system rapidly in recently years, high strength cold-formed steel has been widely used abroad such as countries in Australia. It has got high economic efficiency to use 550MPa high strength cold-formed steel in cold-formed steel framing system buildings. For its superior performances, China also began to study its performances under load and application in the engineering.
An experimental study on six full-size 550MPa high strength cold-formed steel wall studs lined with wallboard on both sides subjected to centric axial loads is carried out in this paper. The load carrying capacity and failure mode of the wall studs are obtained from the experiment. It is the basis of stud's theorical analysis. Based on the test, the finite element analysis model is established. A parameter analysis about the spacing of studs, the thickness of plasterboard, the type of wallboards, the overlap seams of steel rib panels, the spacing of screws and the plate strips of the wall studs subjected to centric axial loads is carried out after the finite element analysis model has been verified by test data. The analysis results can be for design reference.
Through the analysis of test indication and failure mode, there are two methods to estimate the load carrying capacity of the wall studs calculated by using "Technical code of cold-formed thin-walled steel structures"(GB50018- 2002). One method is the load carrying capacity determined by buckling of the stud and taking the effective length of stud as double spacing of screws. The other one is the load carrying capacity determined by the failure of stud strength. Best on the analysis, a suggested method to design the cold-formed steel wall studs with wallboard on both sides under axial compression has been put forward in the paper. The suggested method is safe to be used to calculate the load carrying capacity of the wall studs. What is more, the suggested method can also be accepted and used easily by designers.
引文
[1]Yu.W.W.Cold-Formed Steel Design.3nd Edi.2000
[2]North American Steel Framing Alliance.Prescriptive Method for Residential Cold-Formed Steel Framing.Year 2000 Edition.
[3]何保康,周天华.多层薄板轻钢房屋体系可行性报告(结构部分)[R].住宅产业,2007:39-45
[4]刘承宗,周志勇.我国轻钢建筑及其发展探讨.工业建筑,2000,30(5):53-57
[5]王国周.中国钢结构五十年.建筑结构,2001,16(6):27-29
[6]《冷弯薄壁型钢结构技术规范》GB50018-2002.中国计划出版社.2002年12月,北京
[7]Gilesg Green.Light Gauge Steel Columns in Wall-Braced Panels.Bulletin No.35,part2,Engineering Experiment Station,Cornell University,1947,10.
[8]Winter George.Lateral Bracing of Columns and Beams.Transactions ASCE,Vol.125,1960.
[9]Larson M A.Discussion of "Lateral Bracing of Columns and Beams".Transactions ASCE,Vol.125,1960.
[10]Timoshenko,S.P.,and Gere,J.M.Theory of elastic stability,and Ed.,McGraw-Hill,1961.2531-261.
[11]Pincus G,Fisher G P.Behavior of Diaphragm-Braced Columns and Beams.Journal of Structural Division,Proceedings ASCE,1966,92(2).
[12]Errera S J.The Performance of Beams and Columns Continuously Braced with Diaphragm.Report No.321,Department of Structure Engineering Connell University,October,1965.
[13]Simman A.Buckling of Diaphragm-Braced Columns of Unsymmetrical Sections and Application to Wall Studs Design.PHD Thesis,Cornell University,Ithaca,USA;1973.
[14]American Iron and Steel Institute.Specification for the Design of Cold-Formed Steel Structural Members.Washington:American Iron and Steel Institute,1986.
[15]American Iron and Steel Institute.Specification for the Design of Cold-Formed Steel Structural Members.Washington:American Iron and Steel Institute,1996.
[16]Standards Australia/Standards New Zealand(AS/NZS).Australian Standard/New Zealand Standard AS/NZS 4600.Cold-Formed Steel Structures.Sydney,Australia,1996.
[17]Miller TH,Pekoz TA.Behaviour of Gypsum Sheathed Cold-Formed Steel Wall Studs.Journal of Structural Engineering ASCE 1994;120(5):644-650.
[18]Young-ki Lee and Thomas H.Miller,Axial Strength Determination for Gypsum- sheathed,Cold-Formed Steel Wall Stud Composite Panels.Journal of Structural Engineering/June 2001, 608-615.
[19]Telue YK,Mahendran M.Behaviour of cold-formed steel wall frames lined with plasterboard.Journal of Constructional Steel Research 2001;57:435-452.
[20]Telue YK,Mahendran M.Behaviour and design of cold,formed steel wall frames lined with plasterboard on both sides.Engineering Structures 26(2004)567-579
[21]Telue YK.,Mahendran M.Numerical modeling and design of unlined cold-formed steel wall frames.Journal of Constructional Steel Research 60(2004)1241-1256.
[22]钟亚军.冷弯型钢底层住宅房屋体系墙体立柱的性能研究.[硕士学位论文].西安:西安建筑科技大学,2003.
[23]刘前进,何保康等.低层冷弯薄壁型钢房屋墙体立柱承载力试验研究,钢结构.2004(4):26-29.
[24]秦雅菲.冷弯薄壁型钢低层住宅墙柱体系轴压性能理论与试验研究.[博士学位论文].上海:同济大学,2005.
[25]何保康,蒋路,姚行友等.高强冷弯薄壁型钢卷边槽形截面轴压柱畸变屈曲试验研究,建筑结构学报,2006,27(3):10-17。
[26]周天华,何保康,周绪红等.高强冷弯薄壁型钢轴压短柱受力性能试验研究.建筑科学与工程学报,2005,22(3):36-44。
[27]周天华,何保康,周绪红等.高强冷弯薄壁型钢轴压长柱受力性能试验研究.建筑科学与工程学报,2005,22(4):36-44。
[28]沈祖炎,李元齐,王磊等.屈服强度550MPa高强冷弯薄壁型钢轴心受压构件可靠度分析,建筑结构学报,2006,27(3):26-33。
[29]李元齐,沈祖炎,王磊等.屈服强度550MPa高强冷弯薄壁型钢轴心受压构件承载力计算模式研究,建筑结构学报,2006,27(3):18-25。
[30]杨松岭.550MPa高强冷弯薄壁型钢轴压墙体立柱承载能力试验研究.[硕士学位论文].西安:西安建筑科技大学,2007.
[31]中华人民共和国国家标准,《金属材料-室温拉伸试验方法》GB/T 228-2002.
[32]550MPa高强冷弯薄壁型钢墙体立柱承载力试验研究报告[R].2006.12.
[33]博嘉科技.有限元分析软件--ANAYS融会与贯通[M].北京:中国水利水电出版社,2002.
[34]《中华人民共和国林业行业标准》LY/T 1580-2000.
[35]American Iron and Steel Institute.North American Specification for the Design of Cold-formed Steel Structural Members,2001,Washington,DC,USA
[36]Miller TH,Behavior of Cold-Formed Steel Wall Stud Assemblies Subject to Eccentric Axial Loads.PHD Thesis,Cornell Univ.1990,Ithaca,N.Y.
[37]陈骥.钢结构稳定理论与设计(第二版).北京:中国科学出版社,2003。
[38]陈绍蕃.钢结构稳定设计指南(第二版).科学出版社,1998年8月。
[39]Von Karman,T.E.E.Sechler.The Strenth of Thin Plate in Compression.Transactions ASME,vol.54,APM 54-5,1932.
[40]陈绍蕃.卷边槽钢的局部相关屈曲和畸变屈曲[J].建筑结构学报,2002,23(1):27-31.
[2]North American Steel Framing Alliance.Prescriptive Method for Residential Cold-Formed Steel Framing.Year 2000 Edition.
[3]何保康,周天华.多层薄板轻钢房屋体系可行性报告(结构部分)[R].住宅产业,2007:39-45
[4]刘承宗,周志勇.我国轻钢建筑及其发展探讨.工业建筑,2000,30(5):53-57
[5]王国周.中国钢结构五十年.建筑结构,2001,16(6):27-29
[6]《冷弯薄壁型钢结构技术规范》GB50018-2002.中国计划出版社.2002年12月,北京
[7]Gilesg Green.Light Gauge Steel Columns in Wall-Braced Panels.Bulletin No.35,part2,Engineering Experiment Station,Cornell University,1947,10.
[8]Winter George.Lateral Bracing of Columns and Beams.Transactions ASCE,Vol.125,1960.
[9]Larson M A.Discussion of "Lateral Bracing of Columns and Beams".Transactions ASCE,Vol.125,1960.
[10]Timoshenko,S.P.,and Gere,J.M.Theory of elastic stability,and Ed.,McGraw-Hill,1961.2531-261.
[11]Pincus G,Fisher G P.Behavior of Diaphragm-Braced Columns and Beams.Journal of Structural Division,Proceedings ASCE,1966,92(2).
[12]Errera S J.The Performance of Beams and Columns Continuously Braced with Diaphragm.Report No.321,Department of Structure Engineering Connell University,October,1965.
[13]Simman A.Buckling of Diaphragm-Braced Columns of Unsymmetrical Sections and Application to Wall Studs Design.PHD Thesis,Cornell University,Ithaca,USA;1973.
[14]American Iron and Steel Institute.Specification for the Design of Cold-Formed Steel Structural Members.Washington:American Iron and Steel Institute,1986.
[15]American Iron and Steel Institute.Specification for the Design of Cold-Formed Steel Structural Members.Washington:American Iron and Steel Institute,1996.
[16]Standards Australia/Standards New Zealand(AS/NZS).Australian Standard/New Zealand Standard AS/NZS 4600.Cold-Formed Steel Structures.Sydney,Australia,1996.
[17]Miller TH,Pekoz TA.Behaviour of Gypsum Sheathed Cold-Formed Steel Wall Studs.Journal of Structural Engineering ASCE 1994;120(5):644-650.
[18]Young-ki Lee and Thomas H.Miller,Axial Strength Determination for Gypsum- sheathed,Cold-Formed Steel Wall Stud Composite Panels.Journal of Structural Engineering/June 2001, 608-615.
[19]Telue YK,Mahendran M.Behaviour of cold-formed steel wall frames lined with plasterboard.Journal of Constructional Steel Research 2001;57:435-452.
[20]Telue YK,Mahendran M.Behaviour and design of cold,formed steel wall frames lined with plasterboard on both sides.Engineering Structures 26(2004)567-579
[21]Telue YK.,Mahendran M.Numerical modeling and design of unlined cold-formed steel wall frames.Journal of Constructional Steel Research 60(2004)1241-1256.
[22]钟亚军.冷弯型钢底层住宅房屋体系墙体立柱的性能研究.[硕士学位论文].西安:西安建筑科技大学,2003.
[23]刘前进,何保康等.低层冷弯薄壁型钢房屋墙体立柱承载力试验研究,钢结构.2004(4):26-29.
[24]秦雅菲.冷弯薄壁型钢低层住宅墙柱体系轴压性能理论与试验研究.[博士学位论文].上海:同济大学,2005.
[25]何保康,蒋路,姚行友等.高强冷弯薄壁型钢卷边槽形截面轴压柱畸变屈曲试验研究,建筑结构学报,2006,27(3):10-17。
[26]周天华,何保康,周绪红等.高强冷弯薄壁型钢轴压短柱受力性能试验研究.建筑科学与工程学报,2005,22(3):36-44。
[27]周天华,何保康,周绪红等.高强冷弯薄壁型钢轴压长柱受力性能试验研究.建筑科学与工程学报,2005,22(4):36-44。
[28]沈祖炎,李元齐,王磊等.屈服强度550MPa高强冷弯薄壁型钢轴心受压构件可靠度分析,建筑结构学报,2006,27(3):26-33。
[29]李元齐,沈祖炎,王磊等.屈服强度550MPa高强冷弯薄壁型钢轴心受压构件承载力计算模式研究,建筑结构学报,2006,27(3):18-25。
[30]杨松岭.550MPa高强冷弯薄壁型钢轴压墙体立柱承载能力试验研究.[硕士学位论文].西安:西安建筑科技大学,2007.
[31]中华人民共和国国家标准,《金属材料-室温拉伸试验方法》GB/T 228-2002.
[32]550MPa高强冷弯薄壁型钢墙体立柱承载力试验研究报告[R].2006.12.
[33]博嘉科技.有限元分析软件--ANAYS融会与贯通[M].北京:中国水利水电出版社,2002.
[34]《中华人民共和国林业行业标准》LY/T 1580-2000.
[35]American Iron and Steel Institute.North American Specification for the Design of Cold-formed Steel Structural Members,2001,Washington,DC,USA
[36]Miller TH,Behavior of Cold-Formed Steel Wall Stud Assemblies Subject to Eccentric Axial Loads.PHD Thesis,Cornell Univ.1990,Ithaca,N.Y.
[37]陈骥.钢结构稳定理论与设计(第二版).北京:中国科学出版社,2003。
[38]陈绍蕃.钢结构稳定设计指南(第二版).科学出版社,1998年8月。
[39]Von Karman,T.E.E.Sechler.The Strenth of Thin Plate in Compression.Transactions ASME,vol.54,APM 54-5,1932.
[40]陈绍蕃.卷边槽钢的局部相关屈曲和畸变屈曲[J].建筑结构学报,2002,23(1):27-31.