CAJ | 학술논문

为了分析碳纤维布加固钢筋混凝土梁的动力性能，利用ANSYS有限元分析软件建立了碳纤维布加固的钢筋混凝土简支梁模型，将地震波经过傅里叶变换成简谐波加载在梁的跨中位置，并利用有限元方法对此模型进行瞬态分析，分析在不同等级混凝土强度下，碳纤维布层数对钢筋混凝土梁抗弯加固效果的影响。结果表明：碳纤维布层数与加固效果密切相关，混凝土强度对加固效果几乎没有影响。碳纤维布加固可显著提高混凝土梁的动力性能，梁的第一主应力随着碳纤维层数的增加而减小。
위료분석탄섬유포가고강근혼응토량적동력성능，이용ANSYS유한원분석연건건립료탄섬유포가고적강근혼응토간지량모형，장지진파경과부리협변환성간해파가재재량적과중위치，병이용유한원방법대차모형진행순태분석，분석재불동등급혼응토강도하，탄섬유포층수대강근혼응토량항만가고효과적영향。결과표명：탄섬유포층수여가고효과밀절상관，혼응토강도대가고효과궤호몰유영향。탄섬유포가고가현저제고혼응토량적동력성능，량적제일주응력수착탄섬유층수적증가이감소。
A reinforced concrete simply supported beam model strengthened with CFRP sheets is built by using ANSYS finite element analysis software,for the analysis of the dynamic performance of CFRP strengthened RC beams. After Fourier transform the seismic wave is transformed into simple harmonic wave,which is in turn loaded in the mid-span. The transient analysis of this model is conducted by using the finite element method to investigate the anti-bending and reinforcement ef-fects of the layers of CFRP sheets in different grades of concrete strengths. The analysis results indicate that carbon fiber sheet layer is closely related to the reinforcement effect,whereas the strength of the concrete has almost no reinforcement effect. Reinforced carbon fiber sheets can obviously increase the dynamic performance of concrete beams,and the first prin-cipal stress decreases with the increase of carbon fiber layers.