【摘要】 以目标侧向刚度为控制指标,提出了FRP加固钢筋混凝土框架基于位移的抗震加固设计方法。该方法可以针对既有框架柱、梁构件进行准确的FRP抗震加固设计。给出了FRP加固钢筋混凝土构件屈服前、后两阶段的截面刚度计算公式,并对比了计算值与试验值,验证了公式的准确性。建立了屈服前、后两阶段的框架侧向刚度公式。利用目标侧向刚度与结构分析商业软件,可以进行FRP加固钢筋混凝土框架结构的静力弹塑性分析。算例表明,该算法是可行的。更多还原

【Abstract】 With the target lateral stiffness as a control index,the displacement-based seismic design is introduced for RC frames retrofitted with FRP composite.The proposed method can be exactly used for FRP seismic design aimed at any beam,column and joint.The cross-section stiffness formulas of pre-yield and post-yield were given for RC components retrofitted with FRP composites.The formulas’ accuracy is confirmed through a series of tests’ results.Based on the component’s cross-section stiffness,the frame lateral stiffness formula is determined.The nonlinear static analysis of RC frames retrofitted with FRP composites may be made by target stiffness and commercial software.The example shows that the proposed method is feasible.更多还原