装配式混凝土梁柱节点抗震性能研究
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摘要
设计制作了预制装配式混凝土梁柱节点试件,对其进行了低周反复荷载作用下的性能试验,采用ABAQUS有限元软件对装配式混凝土梁柱节点进行了非线性数值仿真分析,并对数值仿真分析结果试验结果进行了对比分析,确定数值仿真分析的合理性。在此基础上,分析了不同轴压比以及后浇区不同混凝土强度等级、钢筋强度等级、后浇区长度对构件的刚度、屈服荷载和极限荷载、耗能等性能的影响。分析结果表明:数值仿真分析结果试验结果吻合较好;轴压比、后浇区材料强度对构件的初始刚度影响较小,而后浇区长度对构件的初始刚度影响较为明显;构件承载力随轴压比提高而降低,而随后浇区长度增加而提高,后浇区钢筋材料强度提高时,构件的极限承载力略有提高;后浇区混凝土强度对构件的耗能性能影响较小,而轴压比、后浇区钢筋强度和后浇区长度对构件的耗能性能影响较为明显。
Cyclic loading tests on the prefabricated reinforced concrete beam-column joint are carried out to investigate its seismic performance,and numerical simulation model based on finite element software ABAQUS is established and validated by comparing with experimental results. On this basis,nonlinear numerical analyses are conducted to make parametric study,which include the axial compression ratio,the concrete strength,the intensity of steel bar,the length of later pouring zone,etc. And the influences on stiffness,yield strength,ultimate bearing capacity of the specimen and energy dissipation are analyzed. The results indicate that the simulation results agree well with the test results. Besides,for different design parameters,the length of later pouring zone has great impact on the initial stiffness of the specimen,while the axial compression ratio and strength of concrete and steel bars don' t. The ultimate bearing capacity of the specimen reduces with the increase of axial compression ratio,but amplifies with the increase of length of later pouring zone. However,the increase of strength of concrete and steel bars has a very limited improvement of the ultimate bearing capacity of the specimen. Different design parameters,the intensity of steel bar and the length of later pouring zone have great impact on the energy dissipation of the specimen,while the strength of concrete doesn't.
引文
[1]陈子康,周云,张季超,吴从晓.装配式混凝土框架结构的研究应用[J].工程抗震与加固改造.2012,34(4);1~11Chen Zi-kang,Zhou Yun,Zhang,Ji-chao,Wu Congxiao.Retroversion and Forecast of Present Research and Application of Precast Concrete Structure[J].Earthquake Resistant Engineering and Retrofitting,2012,34(4):1~11(in Chinese)
    [2]Elliott K S.Research and Development in Precast Concrete Framed Structures[J].Progress in Structural Engineering and Materials,2000,2(4):405~428
    [3]张瀑,鲁兆红,淡浩.汶川地震中预制装配整体结构的震害调查分析[J].四川建筑科学研究,2010(3):129~133Zhang Pu,Lu Zhao-hong,Dan Hao.The Survey Analysis of Prefabricated Structure in Wenchuan Earthquake.[J].Sichuan Building Science,2010(3):129~133(in Chinese)
    [4]Ertas O,Ozden S,Ozturan T.Ductile Connections in Precast Concrete Moment Resisting Frames[J].PCI Journal,2006,51(3):66~76
    [5]Choi H K,Choi Y C,Choi C S.Development and Testing of Precast Concrete Beam-to-column Connections[J].Engineering Structures,2013,56:1820~1835
    [6]董挺峰,李振宝,周锡元,等.无黏结预应力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(2):144~154Dong Ting-feng,Li Zhen-bao,Zhou Xi-yuan,et al.Experimental Study on Seismic Performances of Precast Prestressed Concrete Beam-to-Column Connections with Unbonded Tendons[J].Journal of Beijing University of Technology,2006,32(2):144~154(in Chinese)
    [7]陈适才,闫维明,王文明,等.大型预制混凝土结构梁-柱-叠合板边节点抗震性能研究[J].建筑结构学报,2011,(6):60~67Chen Shi-cai,Yan Wei-ming,Wang Wen-ming,et al.Seismic Behavior of Exterior Beam to Column Joints with Layered Slab of Large Precast Concrete Structures[J].Journal of Building Structures,2011,(6):60~67(in Chinese)
    [8]陈适才,闫维明,李振宝,等.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[J].工程力学,2012,29(2):135~141Chen Shi-cai,Yan Wei-ming,Li Zhen-bao.Experimental Study on Seismic Behavior of Layered Slab and Beam to Column Interior Joints in Precast Concrete Structures[J].Engineering Mechanics.2012,29(2):135~141(in Chinese)
    [9]Scott B D,Park R,Priestley M J N.Stress-strain Behavior of Concrete Confined by Overlapping Hoops at Low and High Strain Rates[A].ACI Journal Proceedings[C].ACI,1982,7 9(1):13~27
    [10]Filippou F C,Popov E G,Bertero V V.Effects of Bond Deterioration on Hysteretic Behavior of Reinforced Concrete Joints[R].California:University of California,Berkeley,1983
    [11]Menegotto M,Pinto E.Method of Analysis for Cyclically Loaded Reinforced Concrete Plane Frames Including Changes in Geometry and Non-elastic Behavior of Elements under Combined Normal Force and Bending[C]//IABSE Symposium on Resistance and Ultimate Deformability of Structures Acted on by Well-Defined Repeated Loads.Lisbon Portual,1973
    [12]ABAQUS,Inc.ABAQUS Keywords Reference Manual[M].2006
    [13]陆新征,叶列平,缪志伟.建筑抗震弹塑性分析—原理、模型ABAQUS,MSC.MARC和SAP2000上的实践[M].北京:中国建筑工业出版社,2009Lu Xin-zheng,Ye Lie-ping,Miao Zhi-wei.Elasto-plastic Analysis of Buildings Against Earthquake-Theory,Model and Implementation on ABAQUS,MSC.MARC and SAP2000[M].Beijing:China Architecture&Building Press,2009(in Chinese)
    [14]赖伟山.新型预制装配式消能减震混凝土框架节点抗震性能研究[D].广州:广州大学,2014Lai Wei-shan.Research of the Newly Energy-Dissipative Prefabricated Frame Structure Joints[D].Guangzhou:Guangzhou University,2014(in Chinese)

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