纤维增强复合材料加固混凝土柱的抗震性能研究现状
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摘要
阐述纤维增强复合材料(FRP)加固混凝土柱的研究进展及成果,包括FRP加固混凝土柱的原理、破坏形式、试验研究、有限元模拟、抗震性能评估以及未来发展趋势等。在抗震性能评估方面,介绍了延性的量化设计指标:位移延性系数和曲率延性系数。介绍计算位移延性系数的3种实用方法,并用曲率增大系数来衡量曲率延性系数,以期为FRP抗震加固的进一步研究提供参考。
It is presented a brief review on FRP for the seismic retrofit of RC columns,including the theories of FRP-strengthened RC columns,failure modes,the conclusions obtained through experimental investigations,finite element simulations,seismic performance evaluation and further developments of FRP reinforced columns.Displacement ductility coefficient and curvature ductility coefficient are two quantificational indices for seismic ductility design.It is also introduced three useful methods to calculate displacement ductility coefficient,and curvature enhancement coefficient is used to measure curvature ductility coefficient,it is expected to provide useful conclusions for further investigations.
引文
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