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扼要叙述碳纤维布加固铝合金方管简支梁受压区应变变化规律,可知用碳纤维布对铝合金方管梁进行加固,可以提高其极限承载力,抑制梁跨中挠度的发展。同时在本次试验中验证了“拐点”即荷载-跨中挠度曲线由直变曲之际,“零点”即铝合金梁侧即将发生屈曲现象的前兆的观点。
The variation of strain in the compression zone of simply-supported square tube reinforced with carbon fiber reinforced plastic is briefly described. It can be seen that using CFRP to reinforce the square tube beam can increase its ultimate bearing capacity and restrain the mid-span deflection. At the same time in this experiment to verify the “inflection point ” that load - span curve from the straight bend, “zero” that aluminum alloy beam side of the buckling phenomenon is about to happen.