可拆卸式消能减震钢桁架连梁抗震性能试验研究
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摘要
提出了两种可拆卸式消能减震钢桁架式连梁,连梁的上下弦杆与钢筋混凝土剪力墙内的钢结构预埋件铰接,而腹杆与弦杆采用螺栓连接,且腹杆由屈曲约束支撑或屈曲约束钢腹板等消能装置组成。通过2个1/2比例的钢桁架连梁试件的低周反复荷载试验研究了该可拆卸式钢桁架连梁的抗震性能。研究表明:设置屈曲约束支撑和设置屈曲约束钢腹板的钢桁架连梁具有较好的强度和位移延性,其破坏模式表现为消能减震装置的塑性破坏;连梁试件的滞回曲线饱满,耗能能力良好;建议的钢桁架连梁能够满足高烈度区连梁抗震性能的需求,能够应用于高烈度区的联肢剪力墙结构中。
This paper presents two new types of replaceable steel truss coupling beams with energy dissipating devices for hybrid coupled wall systems.The top and bottom chords of the proposed coupling beams are pinned to the steel embedment in reinforced concrete walls while the energy-dissipating devices such as buckling restrained braces or buckling restrained steel plates are adopted as the webs of the beams and bolted to the chords.Two 1 /2-scale steel truss coupling beams were tentatively tested under simulated seismic loadings to evaluate the seismic behavior.The experimental results indicate that the two proposed coupling beams with buckling restrained braces or buckling restrained steel plates exhibit high strength capacity and displacement ductility.The failure of the coupling beams is caused by the large inelastic deformation of energy-dissipating devices.Therefore,the coupling beams achieve satisfactory hysteretic behavior and excellent energy-dissipating capacities.The studies also demonstrate that the proposed coupling beams meet the requirements of coupling beams in high seismic zones and thus can be applied in the coupled wall systems.
This paper presents two new types of replaceable steel truss coupling beams with energy dissipating devices for hybrid coupled wall systems.The top and bottom chords of the proposed coupling beams are pinned to the steel embedment in reinforced concrete walls while the energy-dissipating devices such as buckling restrained braces or buckling restrained steel plates are adopted as the webs of the beams and bolted to the chords.Two 1 /2-scale steel truss coupling beams were tentatively tested under simulated seismic loadings to evaluate the seismic behavior.The experimental results indicate that the two proposed coupling beams with buckling restrained braces or buckling restrained steel plates exhibit high strength capacity and displacement ductility.The failure of the coupling beams is caused by the large inelastic deformation of energy-dissipating devices.Therefore,the coupling beams achieve satisfactory hysteretic behavior and excellent energy-dissipating capacities.The studies also demonstrate that the proposed coupling beams meet the requirements of coupling beams in high seismic zones and thus can be applied in the coupled wall systems.
引文
[1]王亚勇.汶川地震建筑震害启示:抗震概念设计[J].建筑结构学报,2008,29(4):20-25.(WANGYayong.Lessons learnt from building damages inWenchuan earthquake:seismic concept design ofbuildings[J].Journal of Building Structures,2008,29(4):20-25.(in Chinese))
[2]龚炳年,方鄂华.反复荷载下联肢剪力墙结构连系梁的性能[J].建筑结构学报,1988,9(1):34-41.(GongBingnian,Fang Ehua.Behavior of reinforced concretecoupling beams between shear walls under cyclicloading[J].Journal of Building Structures,1988,9(1):34-41.(in Chinese))
[3]Park R,Paulay T.Reinforced concrete structures[M].New York:John Wiley&Sons,Inc.,1975:645-655
[4]皮天祥,刘光伟,傅剑平,白绍良.新配筋方案带板连梁抗震性能对比试验[J].重庆大学学报:自然科学版,2007,30(8):107-113.(Pi Tianxiang,LiuGuangwei,Fu Jianping,Bai Shaoliang.Comparativeexperiment research on seismic behavior of newreinforcement scheme coupling beam with slab[J].Journal of Chongqing University:Natural ScienceEdition,2007,30(8):107-113.(in Chinese))
[5]Lam W Y,Su R K L,Pam H J.Experimental study onembedded steel plate composite coupling beams[J].Journal of Structural Engineering,ASCE,2005,131(8):1294-1302.
[6]Gong B N,Shahrooz B M.Concrete-steel compositecoupling beams:I:component testing[J].Journal ofStructural Engineering,ASCE,2001,127(6):625-631.
[7]Gong B N,Shahrooz B M.Concrete-steel compositecoupling beams:II:subassembly testing and designverification[J].Journal of Structural Engineering,ASCE,2001,127(6):632-638.
[8]Harries K A,Mitchell D,Cook W D.Seismic responseof steel beams coupling concrete walls[J].Journal ofStructural Engineering,1993,119(12):3611-3629.
[9]Park W S,Yun H D.Panel shear strength of steelcoupling beam-wall connections in a hybrid wall system[J].Journal of Constructional Steel Research,2006,62(10):1026-1038.
[10]GB/T 228.1—2010金属材料:室温拉伸试验方法[S].北京:中国计划出版社,2010.(GB/T 228.1—2010.Metallic materials:tensile testing at ambienttemperature[S].Beijing:China Planing Press,2010.(in Chinese))
[11]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—1996Specificating of testing methods for earthquake resistantbuilding[S].Beijing:China Architecture&BuildingPress,1997.(in Chinese))
[2]龚炳年,方鄂华.反复荷载下联肢剪力墙结构连系梁的性能[J].建筑结构学报,1988,9(1):34-41.(GongBingnian,Fang Ehua.Behavior of reinforced concretecoupling beams between shear walls under cyclicloading[J].Journal of Building Structures,1988,9(1):34-41.(in Chinese))
[3]Park R,Paulay T.Reinforced concrete structures[M].New York:John Wiley&Sons,Inc.,1975:645-655
[4]皮天祥,刘光伟,傅剑平,白绍良.新配筋方案带板连梁抗震性能对比试验[J].重庆大学学报:自然科学版,2007,30(8):107-113.(Pi Tianxiang,LiuGuangwei,Fu Jianping,Bai Shaoliang.Comparativeexperiment research on seismic behavior of newreinforcement scheme coupling beam with slab[J].Journal of Chongqing University:Natural ScienceEdition,2007,30(8):107-113.(in Chinese))
[5]Lam W Y,Su R K L,Pam H J.Experimental study onembedded steel plate composite coupling beams[J].Journal of Structural Engineering,ASCE,2005,131(8):1294-1302.
[6]Gong B N,Shahrooz B M.Concrete-steel compositecoupling beams:I:component testing[J].Journal ofStructural Engineering,ASCE,2001,127(6):625-631.
[7]Gong B N,Shahrooz B M.Concrete-steel compositecoupling beams:II:subassembly testing and designverification[J].Journal of Structural Engineering,ASCE,2001,127(6):632-638.
[8]Harries K A,Mitchell D,Cook W D.Seismic responseof steel beams coupling concrete walls[J].Journal ofStructural Engineering,1993,119(12):3611-3629.
[9]Park W S,Yun H D.Panel shear strength of steelcoupling beam-wall connections in a hybrid wall system[J].Journal of Constructional Steel Research,2006,62(10):1026-1038.
[10]GB/T 228.1—2010金属材料:室温拉伸试验方法[S].北京:中国计划出版社,2010.(GB/T 228.1—2010.Metallic materials:tensile testing at ambienttemperature[S].Beijing:China Planing Press,2010.(in Chinese))
[11]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—1996Specificating of testing methods for earthquake resistantbuilding[S].Beijing:China Architecture&BuildingPress,1997.(in Chinese))
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