钢桁架连梁耗能性能试验研究及损伤分析
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摘要
根据两组钢桁架连梁在反复荷载作用下的试验结果,对该新型连梁的破坏形态、滞回性能、耗能能力和累积损伤模型等进行了分析,探讨了钢桁架连梁累积损伤的发展过程和损伤发育规律,通过损伤模型计算的破损结果与试件实际破坏特征对比,讨论了跨高比对连梁损伤发展的影响。结果表明:有交叉腹杆的连梁,跨高比越大,其耗能能力、承载力以及变形均较大,但其损伤发展相对较快。
In this paper,failure pattern,hysteretic behavior,energy dissipation and seismic damage models were analyzed based on experimental results of two groups of steel truss coupling beams under monotonic horizontal and low cyclic loadings.And then development laws of cumulative damage were investigated.At last by comparing the calculated damage indexes with the observed real damage to the steel truss coupling beam,influences of span-height ratio on damage development of steel truss coupling beam were studied.The results show that the increase of span-height ratio makes steel truss coupling beam behave better in energy dissipation and bearing capacity but develop damage faster.
In this paper,failure pattern,hysteretic behavior,energy dissipation and seismic damage models were analyzed based on experimental results of two groups of steel truss coupling beams under monotonic horizontal and low cyclic loadings.And then development laws of cumulative damage were investigated.At last by comparing the calculated damage indexes with the observed real damage to the steel truss coupling beam,influences of span-height ratio on damage development of steel truss coupling beam were studied.The results show that the increase of span-height ratio makes steel truss coupling beam behave better in energy dissipation and bearing capacity but develop damage faster.
引文
[1]姚谦峰,田浩,黄炜.密肋复合墙板耗能性能及地震损伤分析[J].世界地震工程,2006,22(4):5-12.
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[3]Fajfar P.,Equivalent ductility factors taking into account low cycle fatigue[J].Earthquake Eng.Struct.Dyn,1992,21(10):837—848.
[4]Ghobarah A,Abon—Elfath HH,Biddah A.Response—based damage assessment of structures[J].Earthquake Eng.Street.Dy.,1999,28(1):79—104.
[5]Chai Y H,Romstad K M,Bird S M.Energy—based linear damage model for hish—intensity seismic loading[J].Journal ofStructural Enginering.1995,121(5):857—864.
[6]Gulkin P,Sozen MA.Inelastic responses of reinforced concrete structures to earthquake motions[J].Journal of the American Concrete inst,1974,71(12):604—610.
[7]余寿文,冯西桥.损伤力学[M].北京:清华大学出版社,1997.
[8]杨光松.损伤力学与复合材料损伤[M].北京:国防工业出版社,1995.
[9]邓志恒,潘峰,陶晓光,唐光逼.新型组合连梁控制结构体系[J].世界地震工程,2003,9(3):6-11.
[10]潘峰.新型钢连梁控制结构抗震性能研究[D].南宁:广西大学,2004.
[11]潘志明.新型组合连梁控制结构抗震性能研究[D].南宁:广西大学,2007
[12]徐冬晓.钢桁架连梁抗震性能试验研究[D].南宁:广西大学,2008
[13]周志祥.高等钢筋混凝土结构[M].北京:人民交通出版社.2002.1
[2]Powcll G H,Allahabadi R.Seismic damage prediction by deterministic methods:concepts and procedures[J].Earthquake Eng.Struct.Dyn.1988,16(5):719—734.
[3]Fajfar P.,Equivalent ductility factors taking into account low cycle fatigue[J].Earthquake Eng.Struct.Dyn,1992,21(10):837—848.
[4]Ghobarah A,Abon—Elfath HH,Biddah A.Response—based damage assessment of structures[J].Earthquake Eng.Street.Dy.,1999,28(1):79—104.
[5]Chai Y H,Romstad K M,Bird S M.Energy—based linear damage model for hish—intensity seismic loading[J].Journal ofStructural Enginering.1995,121(5):857—864.
[6]Gulkin P,Sozen MA.Inelastic responses of reinforced concrete structures to earthquake motions[J].Journal of the American Concrete inst,1974,71(12):604—610.
[7]余寿文,冯西桥.损伤力学[M].北京:清华大学出版社,1997.
[8]杨光松.损伤力学与复合材料损伤[M].北京:国防工业出版社,1995.
[9]邓志恒,潘峰,陶晓光,唐光逼.新型组合连梁控制结构体系[J].世界地震工程,2003,9(3):6-11.
[10]潘峰.新型钢连梁控制结构抗震性能研究[D].南宁:广西大学,2004.
[11]潘志明.新型组合连梁控制结构抗震性能研究[D].南宁:广西大学,2007
[12]徐冬晓.钢桁架连梁抗震性能试验研究[D].南宁:广西大学,2008
[13]周志祥.高等钢筋混凝土结构[M].北京:人民交通出版社.2002.1
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