混凝土受弯构件经FRP加固后正截面承载力计算

根据用不同纤维材料(布、板)加固的钢筋混凝土受弯构件的大量试验结果，对其失效形式、承载力极限标志、界限判别进行了讨论．基于目前常用纤维具有相似的力学性能，根据平截面假设和极限平衡原理，列出了适用于各种纤维加固后钢筋混凝土构件的正截面受弯极限承载力计算的统一公式，其计算结果与国内外50余件受弯构件的试验结果吻合较好．还对该类加固构件承载力设计值进行了讨论，供工程设计及有关规程编制参考．

Calculation of bearing capacity of RC member in bending with FRP reinforcement

According to the quantities of experimental results, the failure form, symbol of ultimate bearing capacity and limit estimation of RC member in bending retrofitted with different FRP reinforcement are discussed. As the common use fibers have the similar mechanical performance, base on the horizontal section supposition and the ultimate balance theory, the uniform equation of cross section ultimate bearing capacity which is applicable to RC member in bending bonded with any kind of FRP is given. The calculated results are in accord well with the test results of more than 50 domestic and overseas members in bending. In addition, the design ultimate bearing capacity of this kind of strengthening member is discussed, which provides a reference for engineering design and relevant rules compiling.