制备了4根炭纤维复合材料(CFRP)加固钢筋混凝土(RC)实验梁,并在梁内钢筋、混凝土及加固CFRP中预置了布拉格光栅光纤传感器(FBG)和电阻应变片两种传感器.根据钢筋混凝土理论和ANSYS有限元软件编制了实验梁受弯荷载效应模拟计算程序.实验表明,实验梁在受弯承载过程中,布拉格光栅光纤传感器与传统应变片有完全一致的线性关系;模拟计算出的实验梁受拉钢筋、压区混凝土应变值及挠度与荷载的关系与CFRP中FBG的实测值吻合较好.由于对既成RC结构不能在内部装置传感器(会破坏结构降低抗力),采用智能CFRP加固RC结构可实现加固和实时健康测评双重功能.
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