截面贯穿植入复材筋法加固钢筋混凝土短梁的抗剪承载力

SHEAR CAPACITY OF RC SHORT BEAMS STRENGTHENED BY ETS METHOD

为了探讨ETS法抗剪加固混凝土短梁的破坏过程、破坏形态及抗剪承载力,对4根钢筋混凝土短梁进行试验研究和理论分析。采用我国《混凝土结构设计规范》(GB 50010—2010)、美国规范(ACI318-05)的计算值和试验值进行对比分析,计算值均比较保守。研究结果表明:钢筋混凝土短梁采用ETS法抗剪加固后,加固筋的存在延缓了裂缝的发展,提高了开裂荷载和抗剪承载力,表现出良好的受力和变形性能。

This paper explores the destruction progress,failure modes and shear capacity for the reinforced concrete beams shear strengthened with ETS method,according to the study and analysis on 4 RC beams. According to relative analysis between ＂ Code for design of concrete structures（ GB 50010—2010） ＂ and ＂ Building Code Requirements for Structural Concrete（ ACI 318-05） and Commentary（ ACI 318R-05） ＂,calculated values are more conservative than experimental values. The results indicate that reinforced bars can delay the development cracking,improve the cracking load and shear capacity of the beam. The RC beams strengthened by ETS method show good mechanical and deformation properties.