纤维砂浆带加固砌体墙片的抗震性能研究
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摘要
针对低烈度区砌体结构房屋抗震的需要,本文提出利用纤维砂浆带加固砌体墙的一种廉价抗震方案。运用有限元分析软件Ansys10.0进行数值模拟分析,探讨这种加固方案的可行性,并在此基础上进行试验研究。通过纤维砂浆带加固砌体墙片在低周反复荷载作用下的试验,对墙片的破坏特征、裂缝的发展过程、滞回特性、结构延性等技术指标进行对比分析,结果表明,采用纤维砂浆带加固砌体墙有助于提高墙体的开裂荷载,增加结构的延性,改善墙体的抗震性能。
Aiming at seismic requirement of masonry structures in region with low seismic intensity,this paper proposes a seismic measure at a low price that uses fiber reinforced mortar(FRM) to reinforce masonry structures.Taking the advantage of finite element analysis software Ansys10.0 and discussing the feasibility of this method,on the basis of finite element analysis,the authors conducts experimental investigation.Though the test of masonry structures reinforced by cement mortar,under cyclic lateral loading,the authors compare the character and development in crack,hysteretic behavior,and structural ductility.Test results show that the masonry structure reinforced by cement mortar can increase the structural cracking load,structural ductility and improve the aseismatic behavior of walls.
Aiming at seismic requirement of masonry structures in region with low seismic intensity,this paper proposes a seismic measure at a low price that uses fiber reinforced mortar(FRM) to reinforce masonry structures.Taking the advantage of finite element analysis software Ansys10.0 and discussing the feasibility of this method,on the basis of finite element analysis,the authors conducts experimental investigation.Though the test of masonry structures reinforced by cement mortar,under cyclic lateral loading,the authors compare the character and development in crack,hysteretic behavior,and structural ductility.Test results show that the masonry structure reinforced by cement mortar can increase the structural cracking load,structural ductility and improve the aseismatic behavior of walls.
引文
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[12]杜永峰,李慧.利用纤维砂浆提高砖砌体结构延性的探索与试验[J].新型建筑材料,2008,10(S):213-216.DU Yongfeng,LI Hui.Investigation and test on enhancing ductility of brick masonry structures using fiber mortar[J].New Building Materials,2008,10(S):213-216.(in Chinese)
[2]李英民,韩军,刘立平.“5.12”汶川地震砌体结构房屋震害调查与分析[J].西安建筑科技大学学报,2009,41(5):606-611.LI Yingmin,HAN Jun,LIU Liping.Investigation and analysis of masonry building damage caused by the 5.12 Wenchuan earthquake,SichuanProvince[J].Journal of Xi’an University of Architecture and Technology:Natural Science Edition,2009,41(5):606-611.(in Chinese)
[3]莫庸,金建民,杜永峰,等.汶川大地震甘肃灾区房屋震害调查和震害分析[J].工程抗震与加固改造,2008,30(4):56-59.MO Yong,JIN Jianmin,DU Yongfeng,et al.Thoughts on survey of seismic damage and seismic design of frame structure and shear-wall frame in-teraction in longnan region during wenchuan earthquake on May 12th[J].Earthquake Resistant Engineering and Retrofitting,2008,30(4):56-59.(in Chinese)
[4]杜永峰,李慧.隔震建筑宏观性能的调研报告[R].甘肃省建设科技专家委员会应急评估报告.2008.DU Yongfeng,LI Hui.Investigation report about macroscopic properties of isolation building[R].Emergency evaluation report of constructing tech-nological experts committee of Gansu province.2008.(in Chinese)
[5]杜永峰,寇佳亮,杨静成,等.纤维砂浆加固多孔砖砌体墙片抗震性能试验研究[J].兰州理工大学学报,2009,35(3):107-110.DU Yongfeng,KOU Jialiang,YANG Jingcheng,et al.Experimental investigation of aseismatic behavior of wall-body with perforated brick masonryreinforced by cement mortar[J].Journal of Lanzhou University of Technology,2009,35(3):107-110.(in Chinese)
[6]宋彧,原国华,周乐伟.斜拉筋砌体加固结构性能试验研究[J].建筑技术,2008,21(5):42-44.SONG Yu,YUAN Guohua,ZHOU Lewei.Experiment of aseismatic behavior of brick walls strengthened by diagonal steel bar[J].ArchitectureTechnology,2008,21(5):42-44.(in Chinese)
[7]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 Lewei,YUAN Guohua.Experimental investigation of aseismatic behavior of masonry envelopes strengthened with prestressed di-agonal bar[J].Journal of Lanzhou University of Technology,2008,34(5):118-121.(in Chinese)
[8]GB50010-2002混凝土结构设计规范[S].GB50010-2002 Concrete Structure Design Code[S].(in Chinese)
[9]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007.WANG Xinming.ANSYS numerical analysis of engineering structure[M].Beijing:The People Traffic Press,2007.(in Chinese)
[10]施楚贤.砌体结构理论与设计[M].北京:中国建筑工业出版社,2003.SHI Chuxian.Theory and design of masonry structure[M].Beijing:China Building Industry Press,2003.(in Chinese)
[11]吕西林,金国芳,吴晓涵.钢筋混凝土结构非线性有限元理论与应用[M].上海:同济大学出版社,1999.LU Xilin,JIN Guofang,WU Xiaohan.Reinforced concrete structure nonlinear finite element theory and analysis[M].Shanghai:Tongji Univer-sity Press,1999.(in Chinese)
[12]杜永峰,李慧.利用纤维砂浆提高砖砌体结构延性的探索与试验[J].新型建筑材料,2008,10(S):213-216.DU Yongfeng,LI Hui.Investigation and test on enhancing ductility of brick masonry structures using fiber mortar[J].New Building Materials,2008,10(S):213-216.(in Chinese)
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