全装配式RC楼盖板缝节点抗震性能试验研究
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摘要
为研究新型全预制装配式混凝土楼盖板缝连接节点的抗震性能,设计了5种形式的板缝节点,进行了平面内低周反复荷载下的足尺模型试验,对板缝节点的开裂模式、破坏形态、滞回曲线、位移延性、刚度退化和耗能能力进行了较为系统的研究。结果表明:在5种板缝节点中,发卡式节点、盖板式节点和发卡-盖板混合式节点滞回曲线饱满、延性好,具有较好的抗震性能,是理想的板缝连接节点;上下匹配布置预埋机械连接件的板缝节点平面内受剪承载力可以由叠加法进行简化计算。
An experimental program consisting of prototype tests of selected slab connections was conducted to evaluate the seismic behavior of the proposed slab connections used in new-type precast concrete floor diaphragms.Performance of the test specimens was evaluated in terms of crack and failure mode,hysteretic curves,ductility,stiffness degradation and energy dissipation capacity,etc.The test results reveal that the hysteretic curves of hairpin connection(HPC),cover plate connection(CPC) and hybrid connection combined with hairpin connector and cover plate connector(HP-CPC) are plump and show good energy dissipation and seismic performance.The in-plane shear bearing capacity of the new-type connection consisting of coupled mechanical connectors in both side of the slab can be predicted in a simple superposition method.
An experimental program consisting of prototype tests of selected slab connections was conducted to evaluate the seismic behavior of the proposed slab connections used in new-type precast concrete floor diaphragms.Performance of the test specimens was evaluated in terms of crack and failure mode,hysteretic curves,ductility,stiffness degradation and energy dissipation capacity,etc.The test results reveal that the hysteretic curves of hairpin connection(HPC),cover plate connection(CPC) and hybrid connection combined with hairpin connector and cover plate connector(HP-CPC) are plump and show good energy dissipation and seismic performance.The in-plane shear bearing capacity of the new-type connection consisting of coupled mechanical connectors in both side of the slab can be predicted in a simple superposition method.
引文
[1]Yee A A.Social and environmental benefits of precastconcrete technology[J].PCI Journal,2001,46(3):14-19.
[2]Yee A A.Structural and economic benefits of precast/prestressed concrete construction[J].PCI Journal,2001,46(3):34-42.
[3]PCI Industry Handbook Committee.PCI designhandbook:precast and prestressed concrete[S].6thed.Chicago:PCI,2004.
[4]ACI 318-05 Building code requirements for structuralconcrete and commentary[S].Farmington Hills,MI:American Concrete Institute,2005.
[5]Cleland N M,Ghosh S K.Untopped precast concretediaphragms in high-seismic application[J].PCIJournal,2002,47(1):94-99.
[6]Denis Mitchell,Ronald H DeVall,Murat Saatcioglu,et al.Damage to concrete structures due to the 1994Northridge Earthquake[J].Canadian Journal of CivilEngineering,1995,22(2):361-377.
[7]徐有邻.汶川地震中教学楼倒塌调查分析:5.12汶川地震三周年祭[J].建筑结构学报,2011,32(5):9-16.(XU Youlin.Investigation of collapse of teachingbuildings during the Wenchuan Earthquake:thirdanniversary memorial of 5.12 Wenchuan Earthquake[J].Journal of Building Structures,2011,32(5):9-16(in Chinese))
[8]王亚勇.汶川大地震建筑震害启示[J].建筑结构,2008,38(7):1-6.(Wang Yayong.EnlightenmentWenchuan Earthquake building damage[J].BuildingStructure,2008,38(7):1-6.(in Chinese))
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[10]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 in theWenchuan Earthquake:seismic concept design ofbuildings[J].Journal of Building Structures,2008,29(4):20-25.(in Chinese))
[11]徐有邻.由地震引发对预制预应力圆孔板的思考[J].建筑结构,2008,38(7):7-9.(Xu Youlin.Reflecting incurred by earthquake about precastprestressed concrete hollow-cored slab[J].BuildingStructure,2008,38(7):7-9.(in Chinese))
[12]Fleischman R B,Farrow K T.Dynamic behavior ofperimeter lateral-system structures with flexiblediaphragms[J].Earthquake Engineering and StructuralDynamics,2001,30(5):745-763.
[13]梁书亭,庞瑞,朱筱俊.全预制装配式钢筋混凝土楼盖体系:中国,CN101761160B[P].2010-06-30.(Liang Shuting,Pang Rui,Zhu Xiaojun.Fully precastRC floor diaphragms:China,CN101761160B[P].2010-06-30.(in Chinese))
[14]武川川.新型预制装配式混凝土楼盖平面内受力性能研究[D].南京:东南大学,2011:10-46.(WuChuanchuan.Research on the in-plane load-bearingbehavior of the new-type precast fabricated concretediaphragms[D].Nanjing:Southeast University,2011:10-46.(in Chinese))
[15]吴见丰.新型全预制装配式楼盖的竖向受力性能研究[D].南京:东南大学,2011:8-31.(WuJianfeng.Experimental research and theoretical analysison the vertical mechanical behavior of new-type fullyprefabricated floor[D].Nanjing:Southeast University,2011:8-31.(in Chinese))
[16]庞瑞.新型预制装配式RC楼盖体系力学性能与抗震设计方法[D].南京:东南大学,2011:75-95.(Pang Rui.Research on the mechanical property andseismic design method of new-type precast RCdiaphragms[D].Nanjing:Southeast University,2011:75-95.(in Chinese))
[17]Hawkins Neil M,Ghosh S K.Proposed revisions to1997 NEHRP recommended provisions for seismicregulations for precast concrete structures:part 3:diaphragms[J].PCI Journal,2000,45(6):49-58.
[18]Zheng W.Analytical method for assessment of shearcapacity demand for untopped precast double-teediaphragms joined by mechanical connectors[D].Madison:University of Wisconsin-Madison,2001:28-130.
[19]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,1989:23-274.(Tang Jiuru.Seismicresistance of joints in reinforced concrete frames[M].Nanjing:Southeast University Press,1989:23-274.(in Chinese))
[2]Yee A A.Structural and economic benefits of precast/prestressed concrete construction[J].PCI Journal,2001,46(3):34-42.
[3]PCI Industry Handbook Committee.PCI designhandbook:precast and prestressed concrete[S].6thed.Chicago:PCI,2004.
[4]ACI 318-05 Building code requirements for structuralconcrete and commentary[S].Farmington Hills,MI:American Concrete Institute,2005.
[5]Cleland N M,Ghosh S K.Untopped precast concretediaphragms in high-seismic application[J].PCIJournal,2002,47(1):94-99.
[6]Denis Mitchell,Ronald H DeVall,Murat Saatcioglu,et al.Damage to concrete structures due to the 1994Northridge Earthquake[J].Canadian Journal of CivilEngineering,1995,22(2):361-377.
[7]徐有邻.汶川地震中教学楼倒塌调查分析:5.12汶川地震三周年祭[J].建筑结构学报,2011,32(5):9-16.(XU Youlin.Investigation of collapse of teachingbuildings during the Wenchuan Earthquake:thirdanniversary memorial of 5.12 Wenchuan Earthquake[J].Journal of Building Structures,2011,32(5):9-16(in Chinese))
[8]王亚勇.汶川大地震建筑震害启示[J].建筑结构,2008,38(7):1-6.(Wang Yayong.EnlightenmentWenchuan Earthquake building damage[J].BuildingStructure,2008,38(7):1-6.(in Chinese))
[9]王立成,汶川地震后学校砌体建筑结构破坏情况调查与分析[J].大连理工大学学报,2009,49(5):650-656.(Wang Licheng.Investigation and analysisfor damage of school masonry buildings in WenchuanEarthquake[J].Journal of Dalian University ofTechnology,2009,49(5):650-656.(in Chinese))
[10]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 in theWenchuan Earthquake:seismic concept design ofbuildings[J].Journal of Building Structures,2008,29(4):20-25.(in Chinese))
[11]徐有邻.由地震引发对预制预应力圆孔板的思考[J].建筑结构,2008,38(7):7-9.(Xu Youlin.Reflecting incurred by earthquake about precastprestressed concrete hollow-cored slab[J].BuildingStructure,2008,38(7):7-9.(in Chinese))
[12]Fleischman R B,Farrow K T.Dynamic behavior ofperimeter lateral-system structures with flexiblediaphragms[J].Earthquake Engineering and StructuralDynamics,2001,30(5):745-763.
[13]梁书亭,庞瑞,朱筱俊.全预制装配式钢筋混凝土楼盖体系:中国,CN101761160B[P].2010-06-30.(Liang Shuting,Pang Rui,Zhu Xiaojun.Fully precastRC floor diaphragms:China,CN101761160B[P].2010-06-30.(in Chinese))
[14]武川川.新型预制装配式混凝土楼盖平面内受力性能研究[D].南京:东南大学,2011:10-46.(WuChuanchuan.Research on the in-plane load-bearingbehavior of the new-type precast fabricated concretediaphragms[D].Nanjing:Southeast University,2011:10-46.(in Chinese))
[15]吴见丰.新型全预制装配式楼盖的竖向受力性能研究[D].南京:东南大学,2011:8-31.(WuJianfeng.Experimental research and theoretical analysison the vertical mechanical behavior of new-type fullyprefabricated floor[D].Nanjing:Southeast University,2011:8-31.(in Chinese))
[16]庞瑞.新型预制装配式RC楼盖体系力学性能与抗震设计方法[D].南京:东南大学,2011:75-95.(Pang Rui.Research on the mechanical property andseismic design method of new-type precast RCdiaphragms[D].Nanjing:Southeast University,2011:75-95.(in Chinese))
[17]Hawkins Neil M,Ghosh S K.Proposed revisions to1997 NEHRP recommended provisions for seismicregulations for precast concrete structures:part 3:diaphragms[J].PCI Journal,2000,45(6):49-58.
[18]Zheng W.Analytical method for assessment of shearcapacity demand for untopped precast double-teediaphragms joined by mechanical connectors[D].Madison:University of Wisconsin-Madison,2001:28-130.
[19]唐九如.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,1989:23-274.(Tang Jiuru.Seismicresistance of joints in reinforced concrete frames[M].Nanjing:Southeast University Press,1989:23-274.(in Chinese))
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