【摘要】 结合用FRP筋封装的光纤光栅传感器,即FRP-OFBG智能复合筋和钢绞线的力学特性,研制出在钢绞线拉索中直接增加FRP-OFBG的智能钢绞线.通过其在受力时波长的改变值,推算出结构受力截面各个部分的应变值,提出了运用虚拟混凝土条带对梁截面进行开裂和破坏预警,以及FRP-OFBG智能钢绞线混凝土梁的全过程分析方法.更多还原

【Abstract】 With FRP-OFBG sensor bars and high-strength strands,smart strand stay cable can be obtained by installing FRP-OFBG bar.Through its wavelength change by the value of the force,the strain of cross-section can be calculated.We propose that virtual strip concrete should be used,for it can effectively produces prestressed structures and early warnings when cracks appear and concrete crushes.A full-process analysis method for concrete beam reinforced with FRP-OFBG bar is proposed.更多还原