BFRP加固严重震损砌体砖墙抗震性能  

Seismic performance of severely seismically damaged masonry walls strengthened by BFRP

作　　者：雷真[1] 周德源[1] 王继兵[1] 

机构地区：[1]同济大学土木工程学院,上海200092

出　　处：《中南大学学报（自然科学版）》2013年第12期5084-5090,共7页Journal of Central South University:Science and Technology

基　　金：国家重点基础研究发展计划("973"计划)项目(2009BAJ28B02-02)

摘　　要：通过对6片砌体砖墙进行模拟地震作用下的预损伤试验、构件修复加固和加固后的低周反复试验,探讨不同玄武岩纤维用量、不同竖向荷载作用下纤维玄武岩纤维(BFRP)加固严重震损砖墙的抗震性能。通过对试验现象及相关数据包括极限承载力、极限位移、延性系数、滞回&延性曲线、刚度退化等方面进行分析。研究结果表明:裂缝修复对震损砖墙承载力恢复的贡献是不容忽视的,砖墙的极限承载力和抗震性能经过玄武岩纤维加固后达到并超过未加固时的水平。玄武岩纤维加固震损砌体结构是合理、有效的,值得在灾后恢复重建阶段中推广。The experimental study concentrated on the seismic performance of masonry walls strengthened with basalt fiber reinforced polymer （BFRP） under different reinforcement amounts and vertical compressions, which included pre-damage under low cycle reversed loading, crack repairing, strengthening with BFRP and re-test under low cycle reversed loading. By contrasting and analyzing the experimental phenomenon, ultimate bearing capacity, ultimate drift, hysteresis and skeleton curves, stiffness degradation, it can be noted that crack repairing was crucial to the recovering of seismic performance of severely damaged masonry walls. The repaired masonry walls can reach or even exceed the level of un-strengthened specimens＇ ultimate bearing capacity and seismic performance. The result shows that BFRP strengthening technique is effective which is worthy to be extensively promoted and applied in the phase of post-earthquake rehabilitation.

关 键 词：玄武岩纤维 砌体砖墙 修复加固 承载力 抗震性能 

分 类 号：TU317.1[建筑科学—结构工程] TU362