【摘要】 通过对1个未加固砌体试件和2个玄武岩纤维布(BFRP)加固砌体试件进行拟静力试验,研究BFRP加固砌体墙的抗震性能,分析BFRP对已开裂和未开裂砌体的加固效果.研究表明:与未加固试件相比,BFRP加固试件的承载能力和变形能力明显提升,刚度和耗能能力显著改善;与BFRP加固未开裂试件对比,BFRP加固已开裂试件的承载能力稍好,但延性较差,且加载初期刚度下降更明显;BFRP改变砌体破坏形态,并能有效抑制已开裂试件的既有裂缝,提高砌体墙的抗震性能.更多还原

【Abstract】 To study the seismic performance of basalt fiber reinforced plastics(BFRP)-strengthened masonry walls and analyze the reinforcement effect of the BFRP-reinforced and BFRP-retrofitted masonry walls,cyclic tests of one unreinforced and two BFRP-strengthened masonry specimens were carried out.The research results show that the seismic performance of the BFRP-reinforced specimen is better than the unreinforced specimen,in terms of load resistance,deformation capacity,stiffness degradation and energy dissipation.For the BFRP-retrofitted specimen,its load resistance and deformation performance is better than the one of the BFRP-reinforced specimen;but its trend of equivalent stiffness is sharper at the beginning and tends to be close later.Furthermore,BFRP changes the cracking pattern of masonry walls;the existing cracks in the BFRP-retrofitted specimen are effectively restricted.It can be concluded that the BFRP can significantly improve the seismic performance of the BFRP-strengthened masonry walls.更多还原