CFRP布加固高宽比大于1砌体墙片的拟静力试验
首发时间:2011-11-28
摘要:通过对5片高宽比为1.67(其中1片为二次加载)无筋砌体墙片进行了低周往复荷载作用下的拟静力试验研究,探讨CFRP布加固砌体墙片的抗震效果。对比分析了加固前后、不同的贴布形式的砌体墙片的破坏形态、峰值承载力、滞回性能、延性及耗能能力;并与BFRP布加固进行了对比。试验结果表明:通过CFRP布加固能够有效的改善高宽比大于1的砌体墙片的抗震性能;在相同贴布率的情况下,斜向交叉贴布形式的加固效果更加优越。
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Quasi-static experiment of masonry walls of the ratio of height to width more than 1 strengthened with CFRP sheets
Abstract:Five pieces of masonry walls with the ratio of height to width of 1.67 (including one piece as second loading) and were tested under low cyclic horizontal loading combined with constant vertical loads to be discussed the resisting seismic effects of the walls reinforced with CFRP sheets. The failure mode, ultimate bearing capacity, hysteresis performance, ductility and energy dissipation capacity were compared by different reinforcement style, and BFRP cloth reinforcing were also compared. The experiment results indicated that CFRP reinforcement method can effectively improve the masonry walls' resisting seismic performance which have a bigger ratio of height to width than 1. At the same affixing cloth rate, inclined cross affixing form has better reinforcement effect than vertical cross affixing.
Keywords: CFRP sheet ratio of height to width masonry walls quasi-static experiment research
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