预压装配式预应力混凝土框架抗震性能试验研究
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摘要
本文通过对一榀两层两跨预压装配式混凝土框架拟动力和拟静力试验,研究预压装配式混凝土框架的地震反应、刚度退化、滞回性能、耗能能力、位移延性等抗震性能。拟动力试验表明:随着加速度峰值的增大,加载至层间位移角为1/107,试件刚度出现退化,结构呈现塑性性质;拟静力试验表明:低周反复荷载作用下,框架梁端首先出现塑性铰,符合"强柱弱梁"的要求。框架荷载-位移滞回曲线较为丰满,框架破坏时极限位移角可达1/29,实测位移延性系数在4.0左右,预压装配式混凝土框架具有良好的延性性能和较强的变形恢复能力。
Based on a pseudo-dynamic test and a low-reversed cyclic loading experiment,the seismic performance of a specimen of two-story two-bay prestressed fabricated concrete frame,including rigidity degradation,hysteretic behavior,energy dissipation and displacement ductility,is studied.The pseudo-dynamic test indicated that the frame stiffness decreased at story drift angle of 1/107 and the specimen went into plastic behavior as the peak acceleration increases.The low-cyclic reversed loading experiment indicated that the plastic hinge first appeared at the end of the beams in the loading process,the prestressed fabricated concrete frame behaved like a "strong column weak beam" structure.The load-displacement hysteresis curve was quite plump,the ultimate story drift angle was up to 1/29 when the frame was destroyed,and the displacement ductility coefficient of was about 4.0.
Based on a pseudo-dynamic test and a low-reversed cyclic loading experiment,the seismic performance of a specimen of two-story two-bay prestressed fabricated concrete frame,including rigidity degradation,hysteretic behavior,energy dissipation and displacement ductility,is studied.The pseudo-dynamic test indicated that the frame stiffness decreased at story drift angle of 1/107 and the specimen went into plastic behavior as the peak acceleration increases.The low-cyclic reversed loading experiment indicated that the plastic hinge first appeared at the end of the beams in the loading process,the prestressed fabricated concrete frame behaved like a "strong column weak beam" structure.The load-displacement hysteresis curve was quite plump,the ultimate story drift angle was up to 1/29 when the frame was destroyed,and the displacement ductility coefficient of was about 4.0.
引文
[1]范力,吕西林,赵斌.预制混凝土框架结构抗震性能研究综述[J].结构工程师,2007,23(4):90-97(Fan Li,Lu Xilin,Zhao Bin.Summary of investigation on seismicbehavior of precast concrete frame structures[J].StructuralEngineers,2007,23(4):90-97(in Chinese))
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[5]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—1996 Specification oftesting methods for earthquake resistant building[S].Beijing:China Architecture&Building Press,1997(inChinese))
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[9]赵国藩.高等钢筋混凝土结构学[M].北京:机械工业出版社,2005
[2]种迅,孟少平,潘其健,等.部分无黏结预制预应力混凝土框架及其节点抗震能力研究[J].地震工程与工程振动,2007,27(4):56-60(Chong Xun,Meng Shaoping,PanQijian,et al.Research on seismic behavior of partiallyunbonded precast prestressed concrete frames and beam-column subassemblies[J].Journal of EarthquakeEngineering and Engineering Vibration,2007,27(4):56-60(in Chinese))
[3]柳炳康,张瑜中,晋哲锋,等.预压装配式预应力混凝土框架接合部抗震性能试验研究[J].建筑结构学报,2005,26(2):60-65(Liu Bingkang,Zhang Yuzhong,JinZhefeng,et al.Experimental study on seismic behavior ofprestressed fabricated PC frame connections[J].Journalof Building Structures,2005,26(2):60-65(in Chinese))
[4]柳炳康,田井锋,张瑜中,等.低周反复荷载下预压装配式PC框架延性性能和耗能能力[J].建筑结构学报,2007,28(3):74-81(Liu Bingkang,Tian Jingfeng,ZhangYuzhong,et al.Behavior of ductility and energy dissipationof prestressed precast concrete frame under low-cyclicreversed loading[J].Journal of Building Structures,2007,28(3):74-81(in Chinese))
[5]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—1996 Specification oftesting methods for earthquake resistant building[S].Beijing:China Architecture&Building Press,1997(inChinese))
[6]Kaya M,Arslan A S.Analytical modeling of post-tensionedprecast beam-to-column connections[J].Materials&Design,20093,0(9):3802-3811
[7]Morgen B G,Kurama Y C.Seismic design of friction-damped precast concrete frame structures[C]//Proceedings of the 2005 Structures Congress and the 2005Forensic Engineering Symposium.New York,2005
[8]吕西林,范力,赵斌.装配式预制混凝土框架结构缩尺模型拟动力试验研究[J].建筑结构学报,2008,29(4):58-65(Lu Xilin,Fan Li,Zhao Bin.Pseudodynamictest on a reduced scale jointed precast concrete framestructure[J].Journal of Building Structures,2008,29(4):58-65(in Chinese))
[9]赵国藩.高等钢筋混凝土结构学[M].北京:机械工业出版社,2005
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