开洞砖砌体两种加固方法的抗震对比试验
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摘要
通过对开洞砖砌体进行的拟静力试验,以泥浆砌筑的北京地区典型农宅的前纵墙作为研究对象,设计了3片采用不同加固措施的开洞墙体.从破坏情况、极限荷载与开裂位移等方面对3片墙体进行了对比分析,得出开洞墙体抗震的薄弱环节.并对钢丝网水泥砂浆加固和钢窗框加固两种方法的加固和增加效果及破坏特征进行了分析,提出了两种加固方式的加固建议.
Considering the front longitudinal wall of rural housing built by mud masonry as an object of study,three windowed walls reinforced by different methods are designed through the quasi-static test of windowed brick masonry.These three walls are analyzed from the aspects which include destruction,ultimate load and cracking displacement,and the weaknesses of windowed walls are summarized in the earthquake.At the same time,the reinforcement effects and damage characteristics are analyzed for the steel mesh and cement mortar reinforcement and the steel sash reinforcement.In addition,reinforcement recommendations about two reinforcement methods are proposed.
Considering the front longitudinal wall of rural housing built by mud masonry as an object of study,three windowed walls reinforced by different methods are designed through the quasi-static test of windowed brick masonry.These three walls are analyzed from the aspects which include destruction,ultimate load and cracking displacement,and the weaknesses of windowed walls are summarized in the earthquake.At the same time,the reinforcement effects and damage characteristics are analyzed for the steel mesh and cement mortar reinforcement and the steel sash reinforcement.In addition,reinforcement recommendations about two reinforcement methods are proposed.
引文
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[3]张蔚,李爱群,姚秋来,等.高强钢绞线网-聚合物砂浆抗震加固既有建筑砖墙体试验研究[J].建筑结构学报,2009,30(4):55-60.ZHANG Wei,LI Aiqun,YAO Qiulai,et al.Experimentalstudy on existing brick walls strengthened with high-strength steel wire mesh and polymer mortar[J].Journal ofBuilding Structures,2009,30(4):55-60.(in Chinese)
[4]卢会芳,谷倩,孙成访,等.碳纤维布加固带窗洞砖墙抗震性能试验研究[J].武汉理工大学学报,2005,27(2):28-31.LU Huifang,GU Qian,SUN Chengfang,et al.Exper-imental study on seismic behavior of brick wall with a win-dow reinforced by carbon fiber sheet[J].Journal of WuhanUniversity of Technology,2005,27(2):28-31.(in Ch-inese)
[5]刘骥夫.CFGR加固砌体墙力学性能研究[D].大连:大连理工大学,2006.LIU Jifu.Research on mechanical performance of masonrywall strengthened with GFRP[D].Dalian:Dalian Univer-sity of Technology,2006.(in Chinese)
[6]宋,原国华,周乐伟.斜拉筋加固砌体结构抗震性能试验研究[J].建筑技术,2009,40(1):42-44.SONG Yu,YUAN Guohua,ZHOU Lewei.Experiment ofseismic performance of brick walls strengthened by diagonalsteel bar[J].Architecture Technology,2009,40(1):42-44.(in Chinese)
[7]龚进,周鲁敏.带芯柱的新型砌体结构抗震墙抗侧力试验研究[J].建筑技术,2010,41(5):446-450.GONG Jin,ZHOU Lumin.Experimental research on a-seismic behavior of a new-style block masonry wall withcore columns[J].Architecture Technology,2010,41(5):446-450.(in Chinese)
[8]林旭川,陆新征,叶列平.砌体结构的地震倒塌模拟与分析[C]//汶川地震建筑震害调查与灾后重建分析报告.北京:中国建筑工业出版社,2008:285-292.LIN Xuchuan,LU Xinzheng,YE Lieping.Simulation andanalysis of earthquake collapsed for masonry structure[C]//Report of the investigation and reconstruction analysis forbuilding earthquake damages in Wenchuan.Beijing:ChinaBuilding Industry Press,2008:285-292.(in Chinese)
[9]潘晓荣,王安民.砌体结构房屋震害特征及抗震加固设计方法[J].科协论坛,2010(7):14-14.PAN Xiarong,WANG Anmin.Seismic damage character-istics for masonry structure and design method for seismicstrengthening[J].Science&Technology Association Fo-rum,2010(7):14-14.(in Chinese)
[10]Lu M,Shultz A E,Stolarski H K.Analysis of the influ-ence of tensile strength on the stability of eccentricallycompressed slender unreinforced masonry walls under lat-eral loads[J].Journal of Structural Engineering,2004,130(6):921-933.
[11]Zuccarello F A,Milani G,Olivito R S,et al.A numericaland experimental analysis of unbonded brickwork panelslaterally loaded[J].Construction and Building Materials,2009,23(5):2093-2106.
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