实腹式型钢混凝土异形柱的受力性能研究
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摘要
为了研究提高异形柱的承载能力和抗震性能,提出了实腹式型钢混凝土异形柱,并设计了5个试件进行低周反复加载试验,观察了试件的破坏形态,分析其破坏机理,并获取了滞回性能和试件的承载能力等重要参数。利用有限元数值积分法,编写了正截面承载能力的计算机程序;根据试验获取的破坏机理,利用叠加法推导并建立斜截面承载能力计算公式。研究结果表明实腹式型钢混凝土异形柱具有承载能力高、滞回曲线饱满、位移延性好,本文编写的计算机程序和提出的计算公式计算结果与试验结果吻合较好。
In order to improve the bearing capacity and seismic behavior of special-shaped columns,a new type of structure component,the solid steel reinforced concrete special-shaped columns,is introduced,and 5 specimens of the column were designed for the low cyclic reversed loading test.The failure patterns,mechanical behaviors,loading bearing capacity,loading-displacement hysteretic curves were obtained from the test.According to the experimental study,the computer programs for calculation of the M-N interaction curve were compiled using a numerical iterative method.The calculation results and experimental results show satisfactory agreement.Based on the failure characteristics and mechanism derived from the test,the formulas for calculating the ultimate shear capacity of different steel reinforced concrete(SRC) special-shaped columns are deduced.The calculation results are in good agreement with those of the test.Experiment results show that solid steel reinforced concrete special-shaped columns have many obvious merits,such as high bearing capacity,good displacement ductility,full hysteretic loop and excellent seismic energy dissipation performance.All of these may be helpful for engineering designation and construction.
In order to improve the bearing capacity and seismic behavior of special-shaped columns,a new type of structure component,the solid steel reinforced concrete special-shaped columns,is introduced,and 5 specimens of the column were designed for the low cyclic reversed loading test.The failure patterns,mechanical behaviors,loading bearing capacity,loading-displacement hysteretic curves were obtained from the test.According to the experimental study,the computer programs for calculation of the M-N interaction curve were compiled using a numerical iterative method.The calculation results and experimental results show satisfactory agreement.Based on the failure characteristics and mechanism derived from the test,the formulas for calculating the ultimate shear capacity of different steel reinforced concrete(SRC) special-shaped columns are deduced.The calculation results are in good agreement with those of the test.Experiment results show that solid steel reinforced concrete special-shaped columns have many obvious merits,such as high bearing capacity,good displacement ductility,full hysteretic loop and excellent seismic energy dissipation performance.All of these may be helpful for engineering designation and construction.
引文
[1]苏益声,黄义波,唐伟平,等.两种不同配钢形式钢骨混凝土L形柱的受力性能对比分析[J].广西大学学报:自然科学版,2007,35(4):353-357.
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[6]赵世春,黄雄军.劲性钢筋混凝土柱基本抗震行为的试验研究[J].建筑结构学报,1996,17(6):43-50.
[7]CHENG C T,CHEN C C.Seismic behavior of steel beam and reinforced concrete column connections[J].Journal of Con-structional Steel Research,2005,61:587-606.
[8]CHENG T,THMOAS H.Biaxial loaded L-shaped reinforced concrete columns[J].Journal of Structural Engineering,1985,111(12):2 576-2 595.
[9]CHENG T,THMOAS H.T-shaped reinforced concrete members under biaxial bending and axial compression[J].ACIStructure Journal,1989,86(4):460-473.
[10]HIDETAKA U.Short rectangular RC columns under bilateral loading[J].Journal of Structure Engineering,1984,110(3):605-618.
[11]戎贤,王铁成,康谷贻.钢筋混凝土框架柱双向受剪承载力分析[J].地震工程与工程振动,2002,22(5):46-52.
[2]苏益声,胡飞鹏,杨德磊.钢骨混凝土异形柱正截面承载力的影响因素分析[J].广西大学学报:自然科学版,2005,32(4):272-274.
[3]叶列平,方鄂华.钢骨混凝土构件的受力性能研究综述[J].土木工程学报,2000,33(10):1-12.
[4]李杰,吴建营,周德源,等.L形和Z形宽肢异形柱低周反复荷载试验研究[J].建筑结构学报,2002,23(1):53-61.
[5]李哲,张小锋,郭增玉,等.钢骨混凝土T形截面柱力学性能的试验研究[J].土木工程学报,2007,40(1):1-5.
[6]赵世春,黄雄军.劲性钢筋混凝土柱基本抗震行为的试验研究[J].建筑结构学报,1996,17(6):43-50.
[7]CHENG C T,CHEN C C.Seismic behavior of steel beam and reinforced concrete column connections[J].Journal of Con-structional Steel Research,2005,61:587-606.
[8]CHENG T,THMOAS H.Biaxial loaded L-shaped reinforced concrete columns[J].Journal of Structural Engineering,1985,111(12):2 576-2 595.
[9]CHENG T,THMOAS H.T-shaped reinforced concrete members under biaxial bending and axial compression[J].ACIStructure Journal,1989,86(4):460-473.
[10]HIDETAKA U.Short rectangular RC columns under bilateral loading[J].Journal of Structure Engineering,1984,110(3):605-618.
[11]戎贤,王铁成,康谷贻.钢筋混凝土框架柱双向受剪承载力分析[J].地震工程与工程振动,2002,22(5):46-52.
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