【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.更多还原

【Abstract】 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.更多还原