大型预制混凝土梁柱叠合板中节点整体抗震性能试验研究
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摘要
为研究高层预制装配式混凝土结构的抗震性能,并为建立该类结构装配式节点的抗震设计方法提供依据,采用足尺模型试验方法,对结构底层不同连接方式的大尺寸、高轴压预制梁-柱-叠合板装配中节点试件在低周往复荷载作用下的开裂破坏形态、滞回特性、骨架曲线、延性性能、耗能能力、拼缝的影响等性能进行了研究,结果表明:叠合板以及预制梁纵筋、预制柱纵筋的连接方式对整体节点的抗震性能具有重要影响;对于预制梁纵筋锚固连接的中节点,钢筋存在滑移现象,对于预制梁纵筋贯穿连接的中节点,具有与现浇中节点相当的耗能能力与综合抗震性能。
In order to analyze the seismic behavior of high-rise precast concrete structures and develop guidelines for structural design,an experiment was conducted on precast layered slab and beam to column interior joints subjected to high axial loading and reversed cyclic loading with full-scale models,and the seismic performance was studied.The failure pattern,hysteretic characteristics,skeleton curve,displacement ductility,energy dissipation and effect of abutted seam were analyzed.The results indicated that the layered slab and the steel connection type for the beam have great influence on the seismic performance;Steel slippage appeared in the anchorage interior joint;Energy-dissipating capacity and the overall seismic performance of steel-through interior joint were almost equal to that of the monolithic joint.
In order to analyze the seismic behavior of high-rise precast concrete structures and develop guidelines for structural design,an experiment was conducted on precast layered slab and beam to column interior joints subjected to high axial loading and reversed cyclic loading with full-scale models,and the seismic performance was studied.The failure pattern,hysteretic characteristics,skeleton curve,displacement ductility,energy dissipation and effect of abutted seam were analyzed.The results indicated that the layered slab and the steel connection type for the beam have great influence on the seismic performance;Steel slippage appeared in the anchorage interior joint;Energy-dissipating capacity and the overall seismic performance of steel-through interior joint were almost equal to that of the monolithic joint.
引文
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[2]赵斌,吕西林,刘丽珍.全装配式预制混凝土结构梁柱组合件抗震性能试验研究[J].地震工程与工程振动,2005,25(1):81―87.Zhao Bin,Lu Xilin,Liu Lizhen.Experimental study onseismic behavior of precast concrete beam-column subassemblage with fully assembled joint[J].EarthquakeEngineering and Engineering Vibration,2005,25(1):81―87.(in Chinese)
[3]Hasan H K,Tugrul T.Performance of a precast concretebeam-to-beam connection subject to reversed cyclicloading[J].Engineering Structures,2005,27(9):1392―1407.
[4]林宗凡,Sagan E I,Kreger M K.装配式抗震框架延性节点的研究[J].同济大学学报,1998,26(2):134―138.Lin Zongfan,Sagan E I,Kreger M K.Study on theductile connections for precast seismic frame[J].Journalof Tongji University,1998,26(2):134―138.(inChinese)
[5]Khaloo A R,Parastesh H.Cyclic loading of ductileprecast concrete beam–column connection[J].ACIStructural Journal,2003,187(3):440―445.
[6]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):61―65.Liu Bingkang,Zhang Yuzhong,Jin Zhefeng,et al.Experimental study on seismic behavior of prestressedfabricated PC frame connections[J].Journal of BuildingStructures,2005,26(2):61―65.(in Chinese)
[7]李楠,张季超,楚先锋,刘波.预制混凝土结构后浇整体式梁柱节点抗震性能试验研究[J].工程力学,2009,26(增刊I):41―44.Li Nan,Zhang Jichao,Chu Xianfeng,Liu Bo.Experimental study on seismic behavior of precastconcrete beam-column sub-assemblage with cast-in-situmonolithic joint[J].Engineering Mechanics,2009,26(Sup.1):41―44.(in Chinese)
[8]李振宝,董挺峰,等.混合连接装配式框架内节点抗震性能研究[J].北京工业大学学报,2006,32(10):895―900.Li Zhenbao,Dong Tingfeng,el at.Study on seismicperformances of hybrid precast concrete beam-to-columnconnections[J].Journal of Beijing University ofTechnology,2006,32(10):895―900.(in Chinese)
[9]Cheok G S,Stone W C,Kunnath S K.Seismic responseof precast concrete frames with hybrid connections[J].Aci Structural Journal,1998,95(5):527―539.
[10]范力.装配式预制混凝土框架结构抗震性能研究[D].上海:同济大学,2007.Fan Li.Investigation on seismic behavior of jointedprecast concrete frame structures[D].Shanghai:TongjiUniversity,2007.(in Chinese)
[11]Seo S Y,Hawkins N M,el at.Deformation demand ofprecast concrete frame building with ductile connection[C].Fourth International Conference on Repair,Rehabilitation,and Maintenance of Concrete Structures,and Innovations in Design and Construction Seoul,Korea,2000:673―688.
[12]蔡建国,冯健,等.预制预应力混凝土装配整体式框架抗震性能研究[J].中山大学学报,2009,48(2):136―140.Cai Jianguo,Feng Jian,el at.Seismic behavior of framecomprised of precast prestressed concrete components[J].Journal of Sun Yatsen University,2009,48(2):136―140.(in Chinese)
[13]JGJ101-96,建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.JGJ 101-96 Specification of test methods for earthquakeresistant building[S].Beijing:China Architecture&Building Press,1997.(in Chinese)
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