纤维砂浆加固多孔砖砌体墙片抗震性能试验研究
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摘要
通过聚丙烯纤维砂浆加固多孔砖砌体墙片在低周反复水平荷载作用下的试验,对墙片的破坏特征、裂缝发展过程、滞回特性、刚度衰减规律进行对比分析,探讨聚丙烯纤维砂浆加固多孔砖砌体结构对抗震性能的影响.试验结果表明,聚丙烯纤维砂浆加固后的多孔砖砌体结构开裂时间、结构开裂荷载、结构延性均有明显增大,结构整体性增强,墙体刚度退化减缓,墙体裂缝细而密.
By comparing the test result of wall-body with perforated brick masonry reinforced by cement mortar of polypropylene fiber,subjected to low-cyclic lateral loading,the character and propagation of cracks,hysteretic behavior,and stiffness degradation of the wall-body with perforated brick masonry were investigated.The influence of the perforated brick masonry structures reinforced by cement mortar of polypropylene fiber on earthquake resistance performance was discussed.Test result showed that the cracking time,structural cracking load,structural ductility were significantly increased,structural entirety was strengthened,stiffness degradation was delayed,and the cracks in the wall were minute and dense.
By comparing the test result of wall-body with perforated brick masonry reinforced by cement mortar of polypropylene fiber,subjected to low-cyclic lateral loading,the character and propagation of cracks,hysteretic behavior,and stiffness degradation of the wall-body with perforated brick masonry were investigated.The influence of the perforated brick masonry structures reinforced by cement mortar of polypropylene fiber on earthquake resistance performance was discussed.Test result showed that the cracking time,structural cracking load,structural ductility were significantly increased,structural entirety was strengthened,stiffness degradation was delayed,and the cracks in the wall were minute and dense.
引文
[1]刘立新.砌体结构[M].武汉:武汉理工大学出版社,2003.
[2]史庆轩,易文宗.多孔砖砌体强片的抗震性能试验研究及抗倒塌能力分析[J].西安建筑科技大学学报,2000,32(3):271-275.
[3]翁大根,吕西林,任晓崧,等.砖砌体墙片抗震修复与加固伪静力试验[J].世界地震工程,2003,19(1):1-8.
[4]吴辉琴,谢肖礼,藏华,等.CFRP布加固钢筋混凝土梁抗弯性能的仿真分析[J].兰州理工大学学报,2007,33(4):131-134.
[5]李长召,吴亚平,徐金帅,等.CFRP加固钢筋混凝土薄壁箱梁抗弯极限承载力计算[J].兰州理工大学学报,2008,34(2):128-132.
[6]马一平,谈慕华.聚丙烯纤维水泥基复合材料物理力学性能研究(Ⅰ):抗塑性干缩开裂性能[J].建筑材料学报,2000,3(1):48-52.
[7]姚武,马一平,谈慕华,等.聚丙烯纤维水泥基复合材料物理力学性能研究(Ⅱ):力学性能[J].建筑材料学报,2000,3(3):235-239.
[8]中华人民共和国建设部.GB 50003—2001砌体结构设计规范[S].北京:中国建筑工业出版社,2002.
[9]中国建筑科学研究院.JGJ 137—2001多孔砖砌体结构技术规范[S].北京:中国建筑工业出版社,2001.
[2]史庆轩,易文宗.多孔砖砌体强片的抗震性能试验研究及抗倒塌能力分析[J].西安建筑科技大学学报,2000,32(3):271-275.
[3]翁大根,吕西林,任晓崧,等.砖砌体墙片抗震修复与加固伪静力试验[J].世界地震工程,2003,19(1):1-8.
[4]吴辉琴,谢肖礼,藏华,等.CFRP布加固钢筋混凝土梁抗弯性能的仿真分析[J].兰州理工大学学报,2007,33(4):131-134.
[5]李长召,吴亚平,徐金帅,等.CFRP加固钢筋混凝土薄壁箱梁抗弯极限承载力计算[J].兰州理工大学学报,2008,34(2):128-132.
[6]马一平,谈慕华.聚丙烯纤维水泥基复合材料物理力学性能研究(Ⅰ):抗塑性干缩开裂性能[J].建筑材料学报,2000,3(1):48-52.
[7]姚武,马一平,谈慕华,等.聚丙烯纤维水泥基复合材料物理力学性能研究(Ⅱ):力学性能[J].建筑材料学报,2000,3(3):235-239.
[8]中华人民共和国建设部.GB 50003—2001砌体结构设计规范[S].北京:中国建筑工业出版社,2002.
[9]中国建筑科学研究院.JGJ 137—2001多孔砖砌体结构技术规范[S].北京:中国建筑工业出版社,2001.
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