碳纤维布加固混凝土框架非线性分析

Nonlinear analysis for carbon fiber sheets reinforced concrete frame

碳纤维布加固的混凝土框架结构受到较大荷载作用时,尤其在地震荷载作用下,其非线性性能对结构影响很大。然而,通过结构试验的方法,研究CFS加固混凝土框架在各种变化参数、各种荷载作用下的结构性能是十分不现实的。本文根据碳纤维布加固混凝土框架的受力特性,考虑材料非线性、几何非线性等因素的影响,利用数值积分方法,编制了碳纤维布加固混凝土框架结构非线性分析程序,并对两榀CFS加固的混凝土框架受力性能进行了数值模拟。数值计算结果与试验结果吻合较好,表明本文提出的分析程序具有一定的实用性,能够对CFS加固的混凝土框架结构进行类似的非线性模拟分析。

Carbon fiber sheets(CFS) reinforced concrete frame under large load,especially earthquake action,the nonlinearity behavior dramatically influence the structure.However,studying CFS reinforced concrete frame structure performance under various kinds of parameter and different load actions by using structure tested method is unavailable.According to the mechanical behavior of carbon fiber sheets(CFS) reinforced concrete frame and numerical integration,a nonlinear analysis program for CFS reinforced concrete frame is given in consideration of the influence of the nonlinearity of materials and geometry.Two frames are simulated and analyzed by using the program.The computed results are in good agreement with the tested results,which is shown that the program is applicable certainly and can be used to conduct similar nonlinear analyses.