角钢和打包带加固低强度砖墙的抗震性能试验研究
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摘要
以村镇砌体结构房屋中砂浆强度偏低的砖墙为研究对象,提出了一种全新的抗震加固方法:角钢和打包带加固法,并通过低周往复荷载试验,对加固后墙体和原墙在水平力作用下的承载力和变形性能进行了对比分析和研究,从墙体的破坏形态、承载力、变形、滞回特性和耗能性能等多方面进行了抗震性能分析。结果表明,采用本文提出的加固方法可明显提高墙体的抗震性能,尤其是墙体的延性由于打包带的约束作用得到大幅提高。本文的加固方法施工简单、经济高效,有利于在广大农村地区推广应用。
In this paper,the brick walls of low intensity are studied in masonry structures of rural villages,and a new kind of reinforced method is presented:reinforcing walls with steel angles and packing belts.The bearing capacity and deformation properties under lower cycle reversal load are studied by experimental research and analysis.The result about seismic performance is generalized including the failure pattern,bearing capability,deformation,hysteretic curves and energy dissipation,and so on.The result shows that by this kind of reinforced method the seismic performance of the walls is greatly increased,especially the ductility is clearly improved because of the constraint action of packing belts.Based on economics and easily handling,this method is fit for being extended in rural areas.
In this paper,the brick walls of low intensity are studied in masonry structures of rural villages,and a new kind of reinforced method is presented:reinforcing walls with steel angles and packing belts.The bearing capacity and deformation properties under lower cycle reversal load are studied by experimental research and analysis.The result about seismic performance is generalized including the failure pattern,bearing capability,deformation,hysteretic curves and energy dissipation,and so on.The result shows that by this kind of reinforced method the seismic performance of the walls is greatly increased,especially the ductility is clearly improved because of the constraint action of packing belts.Based on economics and easily handling,this method is fit for being extended in rural areas.
引文
[1]李保华.村镇砌体结构房屋抗震加固技术研究[D].北京:北京工业大学,2011Li Bao-hua.Research on the reinforcing technology ofmasonry buildings in the rural stations[D].Beijing:Beijing University of Technology,2011(in Chinese)
[2]曾银枝,李保华,徐福泉,等.村镇砌体结构住宅抗震性能现状分析[J].工程抗震与加固改造,2011,33(3):121～126Zeng Yin-zhi,Li Bao-hua,Xu Fu-quan,et al.Seismicbehavior of masonry structures in rural areas[J].Earthquake Resistant Engineering and Retrofitting,2011,33(3):121～126(in Chinese)
[3]郝彤,刘立新,王仁义.带构造柱混凝土多孔砖墙体的抗震性能试验研究[J].世界地震工程,2008,24(3):93～97Hao Tong,Liu Li-xin,Wang Ren-yi.Experimental studieson seismic behavior of concrete perforated brick walls withconstructional columns[J].World EarthquakeEngineering,2008,24(3):93～97
[4]Paola Mayorca,Sathiparan Navaratnaraj and KimiroMeguro.Report on the State-of-the-Art in the SeismicRetrofitting of Unreinforced Masonry Houses by PP-bandMeshes[A].International Center for Urban SafetyEngineering of Institute of Industrial Science,TheUniversity of Tokyo,July,2006
[5]JGJ 161-2008,镇(乡)村建筑抗震技术规范[S]JGJ 161-2008,Seismic Technical Specification forBuilding Construction in Town and Village[S](inChinese)
[2]曾银枝,李保华,徐福泉,等.村镇砌体结构住宅抗震性能现状分析[J].工程抗震与加固改造,2011,33(3):121～126Zeng Yin-zhi,Li Bao-hua,Xu Fu-quan,et al.Seismicbehavior of masonry structures in rural areas[J].Earthquake Resistant Engineering and Retrofitting,2011,33(3):121～126(in Chinese)
[3]郝彤,刘立新,王仁义.带构造柱混凝土多孔砖墙体的抗震性能试验研究[J].世界地震工程,2008,24(3):93～97Hao Tong,Liu Li-xin,Wang Ren-yi.Experimental studieson seismic behavior of concrete perforated brick walls withconstructional columns[J].World EarthquakeEngineering,2008,24(3):93～97
[4]Paola Mayorca,Sathiparan Navaratnaraj and KimiroMeguro.Report on the State-of-the-Art in the SeismicRetrofitting of Unreinforced Masonry Houses by PP-bandMeshes[A].International Center for Urban SafetyEngineering of Institute of Industrial Science,TheUniversity of Tokyo,July,2006
[5]JGJ 161-2008,镇(乡)村建筑抗震技术规范[S]JGJ 161-2008,Seismic Technical Specification forBuilding Construction in Town and Village[S](inChinese)
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