组合式冗余剪力墙抗震性能试验研究
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摘要
地震作用下普通剪力墙破坏形态单一,破坏过程不具有明显的层次性。提出了一种由壁式框架与哑铃型剪力墙或带暗支撑剪力墙组合而成的冗余型剪力墙,对两种剪力墙分别设计了2片2层1/2缩尺的剪力墙模型,并进行低周反复荷载试验。重点分析了试件的承载力、刚度、延性、滞回特性、衰减过程及各阶段的破坏形态,提出可以采用不同受力破坏阶段墙体的层间位移角作为墙体性能的初步量化指标。试验结果表明,组合式冗余剪力墙有良好的抗震性能,受力破坏时具有明显的层次性,在墙体的一种结构形式破坏后另一种结构形式能继续承受荷载。这种墙体的试验研究在国内外尚未见,该试验是组合式冗余剪力墙的探索性试验。
The failure mode of common shear wall due to earthquake is onefold,and there is no obvious hierarchy in the failure process.A combined redundant shear wall composed of wall-frame and dumbbell-shaped shear wall or shear walls with concealed bracings is proposed.The bearing capacity,stiffness,ductility,hysteresis property,attenuation process and failure mode at each stage are especially analyzed through a low-frequency cyclic loading test of 2 floors 1/2 scale shear wall models of each type the story drift angle at different failure stage is regarded as a preliminary performance quantitative indicator.Test results show that the combined redundant shear wall has a good seismic performance,and there is an obvious hierarchical characteristics in the failure process.When one part in the wall fails,the other can still bear additional locals.It should be noticed that this type of wall hasn't been studied previously,and the present study is a tentative work for the combined redundant RC shear-wall.
The failure mode of common shear wall due to earthquake is onefold,and there is no obvious hierarchy in the failure process.A combined redundant shear wall composed of wall-frame and dumbbell-shaped shear wall or shear walls with concealed bracings is proposed.The bearing capacity,stiffness,ductility,hysteresis property,attenuation process and failure mode at each stage are especially analyzed through a low-frequency cyclic loading test of 2 floors 1/2 scale shear wall models of each type the story drift angle at different failure stage is regarded as a preliminary performance quantitative indicator.Test results show that the combined redundant shear wall has a good seismic performance,and there is an obvious hierarchical characteristics in the failure process.When one part in the wall fails,the other can still bear additional locals.It should be noticed that this type of wall hasn't been studied previously,and the present study is a tentative work for the combined redundant RC shear-wall.
引文
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[2]Riva P,Franchi A.Behavior of reinforced concrete wallswith welded wire mesh subjected to cyclic loading[J].ACIStructural Journal,2001,98(3):324-334
[3]Kuang J S,Ho Y B.Seismic behavior and ductility ofsquat reinforced concrete shear walls with nonseismicdetailing[J].ACI Structural Journal,2008,105(2):225-231
[4]Zhao Qiuhong,Astaneh-Asl A.Cyclic behavior of traditionaland innovative composite shear walls[J].Journal of StructuralEngineering,2004,130(2):271-284
[5]梁兴文,邓明科,张兴虎,等.高性能混凝土剪力墙性能设计理论的试验研究[J].建筑结构学报,2007,28(5):80-88(Liang Xingwen,Deng Mingke,Zhang Xinghu,et al.Experimental study on performance-based seismicdesign of high performance concrete shear wall[J].Journalof Building Structures,2007,28(5):80-88(in Chinese))
[6]邓明科,梁兴文,张思海.高性能混凝土剪力墙延性性能的试验研究[J].建筑结构学报,2009,30(增1):139-143(Deng Mingke,Liang Xingwen,Zhang Sihai.Experimental study on ductility of high performanceconcrete shearwall[J].Journal of Building Structures,2009,30(S1):139-143(in Chinese))
[7]蒋欢军,吕西林.新型耗能剪力墙模型低周反复荷载试验研究[J].世界地震工程,2000,16(3):63-67(JiangHuanjun,Lu Xilin.Experimental study on a new tpye ofenergy dissipation shear wall model under cyclic loading[J].World Information on Earthquake Engineering,2000,16(3):63-67(in Chinese))
[8]曹万林,张建伟,田宝发,等.钢筋混凝土带暗支撑中高剪力墙抗震性能试验研究[J].建筑结构学报,2002,23(6):26-32,55(Cao Wanlin,Zhang Jianwei,Tian Baofa,et al.Experimental study on seismic behavior of mid-riseRC shear wall with concealed bracings[J].Journal ofBuilding Structures,2002,23(6):26-32,55(in Chinese))
[9]康胜,曾勇,叶列平.双功能带缝剪力墙的刚度和承载力研究[J].工程力学,2001,18(2):27-34(KangSheng,Zeng Yong,Ye Lieping.Stiffness and strengthanalysis of dual functional slitted shear wall[J].Engineering Mechanics,2001,18(2):27-34(inChinese))
[10]UFC 4-023-03 Design of structures to resist progressivecollapse[S].US:GSA,2005
[11]GB/T50081—2002普通混凝土力学性能试验方法标准[S].北京:中国建筑工业出版社,2003(GB/T50081—2002 Standard for test method of mechanical properties onordinary concrete[S].Beijing:China Architecture&Building Press,2003(in Chinese))
[12]GB/T228—2002金属材料室温拉伸试验方法[S].北京:中国标准出版社,2002(GB/T228—2002Metallicmaterials-tensile testing at ambient temperature[S].Beijing:Standards Press of China,2002(in Chinese))
[13]范立础,卓卫东.桥梁延性抗震设计[M].北京:人民交通出版社,2001
[14]孙国华,顾强,何若全,等.半刚接钢框架内填暗竖缝钢筋混凝土剪力墙结构滞回性能试验研究[J].建筑结构学报,2010,31(9):16-26(Sun Guohua,Gu Qiang,HeRuoquan,et al.Experimental investigation of partially-restrained steel frame with concealed vertical slits RC infillwalls[J].Journal of Building Structures,2010,31(9):16-26(in Chinese))
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