格构式钢板组合剪力墙加固砌体结构试验
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摘要
目的研究格构式钢板组合剪力墙的抗剪承载力和最大水平位移.方法对4片砖墙体模型进行低周反复水平荷载试验,通过滞回曲线、骨架曲线、延性系数及刚度退化曲线,对试验模型进行了抗震性能的对比分析.结果与未加固墙体模型相比,窗间墙模型中格构式钢板组合剪力墙的开裂荷载与极限荷载分别提高了1.94%和10.13%,延性提高了54%;纵横墙模型中格构式钢板组合剪力墙的开裂荷载与极限荷载分别提高了69.73%和42.32%,延性提高了9.8%.结论格构式钢板组合剪力墙加固方法可有效提高砖砌体的抗侧刚度、延性、耗能能力,具有良好的抗震性能.
Study shear capacity and the maximum horizontal displacement of the lattice steel plate shear wall.Through low cyclic horizontal loading test of 4 brick wall models,got the hysteresis curve,the skeleton curve,ductility factor and stiffness degradation curve,and made a comparative analysis of the seismic performance of the test model.The experiments showed that,compared with the unstrengthened wall model,the window wall model in the lattice of steel plate shear walls cracking load and ultimate load were increased by 1.94% and 10.13%,the ductility improved by 54%;lattice model of vertical and horizontal wall steel plate shear wall cracking load and ultimate load were increased by 69.73% and 42.32%,ductility increased by 9.8%.Lattice steel plate shear wall reinforcement method can effectively improve the brickwork of the lateral stiffness,ductility,energy dissipation capacity,and has a good seismic performance.
Study shear capacity and the maximum horizontal displacement of the lattice steel plate shear wall.Through low cyclic horizontal loading test of 4 brick wall models,got the hysteresis curve,the skeleton curve,ductility factor and stiffness degradation curve,and made a comparative analysis of the seismic performance of the test model.The experiments showed that,compared with the unstrengthened wall model,the window wall model in the lattice of steel plate shear walls cracking load and ultimate load were increased by 1.94% and 10.13%,the ductility improved by 54%;lattice model of vertical and horizontal wall steel plate shear wall cracking load and ultimate load were increased by 69.73% and 42.32%,ductility increased by 9.8%.Lattice steel plate shear wall reinforcement method can effectively improve the brickwork of the lateral stiffness,ductility,energy dissipation capacity,and has a good seismic performance.
引文
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[14]尚守平,姜巍.HPFL加固砖砌体抗压强度试验研究[J].广西大学学报:自然科学版,2010,35(6):877-881.(Shang Shouping,Jiang Wei.The HPFL reinforcedbrick masonry compressive strength test[J].Guan-gxi University:Natural Science Edition,2010,35(6):877-881.)
[15]王萍,于江.砌体房屋墙体加固方法研究与应用[J].江苏建筑,2011,5(143):43-45.(Wang Ping,Yu Jiang.Masonry building reinforce-ment method research and application[J].Jiangsuarchitecture,2011,5(143):43-45.)
[2]何建.砌体结构房屋可靠性鉴定与加固方法及实例[D].重庆:重庆大学,2006:1109.(He Jian.The reliability of identification and rein-forcement of masonry structure and examples[D].Chongqing:Chongqing University,2006:1109.)
[3]康艳博,巩正光.混凝土板墙加固砖墙抗震性能综述[J].工程抗震与加固改造,2010,32(4):80-86.(Kang Yanbo,Gong Zhengguang.Concrete wall re-inforcement of masonry w alls performance review[J].Engineering and Retrofitting,2010,32(4):80-86.)
[4]Ding Dajun.A seismic measures of multi-story ma-sonry dw elling buildings in seismic regions[J].In-ternational Journal for Housing Science and Its Ap-plications,1996,20(1):1-10.
[5]宋彧,周乐伟,原国华.砌体结构预应力斜拉筋加固抗震性能试验研究[J].兰州理工大学学报,2008,34(5):118-121.(Song Yu,Zhou Yuewei,Yuan Guohua.Masonrystructures prestressed brace reinforement seismic per-formance[J].Lanzhou University of Technology,2008,34(5):118-121.)
[6]原国华.斜拉筋加固砌体结构抗震性能试验研究[D].甘肃:兰州理工大学,2008.(Yuan Guohua.Oblique stretch Seismic behavior ofreinforced masonry structures[D].Gansu:LanzhouUniversity of Technology,2008.)
[7]向晖.扩张网水泥砂浆加固砖墙抗震性能的试验研究[D].四川:重庆大学,2002.(Xiang Hui.Extended network of cement mortar re-inforced masonry w alls performance test[D].Si-chuan:Chongqing University,2002)
[8]赵彤,张晨军,谢剑.碳纤维布用于砖砌体抗震加固的试验研究[J].地震工程与工程振动,2001,21(2):89-95.(Zhao Tong,Zhang Chenjun,Xie Jian.Carbon fibersheets for seismic strengthening of brick masonry test[J].Engineering Vibration,2001,21(2):89-95.)
[9]Quantrill R J,Hollaway G,Thorne A M.Experimen-tal and analytical investigation of FRP strengthenedbeam response:part I[J].M agazine of Concrete Re-search,1996,48(12):331-342.
[10]Rahimi H,Hutchinson A.Concrete beams strength-ened w ith externally bonded FRP plates[J].Journalof Composites for Construction,ASCE,2001,5(1):44-56.
[11]由世岐,刘新强,刘斌.斜向粘贴FRP加固砖砌体墙受剪试验[J].沈阳建筑大学学报:自然科学版,2008,24(5):803-808.(You Shiqi,Liu Xinqiang,Liu Bin.Oblique pasteFRP reinforced brick masonry w all shear test[J].Shenyang Architectural University:Natural Science,2008,24(5):803-808.)
[12]Theofanis Krevaikas D,Thanasis C,Triantafillou M.ASCE masonry confinement w ith fiber-reinforcedpolymers[J].Journal of Composites for Construc-tion,ASCE,2005(3/4):128-135.
[13]刘明,龚苏平,刘新强,等.FRP加固砖砌体抗压强度的试验[J].沈阳建筑大学学报:自然科学版,2006,22(5):732-735.(Liu Ming,Gong Suping,Liu Xinqiang.FRP rein-forced brick masonry compressive strength test[J].Shenyang Architectural University:Natural Science,2006,22(5):732-735.)
[14]尚守平,姜巍.HPFL加固砖砌体抗压强度试验研究[J].广西大学学报:自然科学版,2010,35(6):877-881.(Shang Shouping,Jiang Wei.The HPFL reinforcedbrick masonry compressive strength test[J].Guan-gxi University:Natural Science Edition,2010,35(6):877-881.)
[15]王萍,于江.砌体房屋墙体加固方法研究与应用[J].江苏建筑,2011,5(143):43-45.(Wang Ping,Yu Jiang.Masonry building reinforce-ment method research and application[J].Jiangsuarchitecture,2011,5(143):43-45.)
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