CAJ | 학술논문

为了得到较精确的施工期钢筋混凝土框架结构内力的时变规律以及对应的可靠指标，考虑了各个施工阶段活荷载的分布规律以及混凝土收缩徐变的影响下，对施工期某高层钢筋混凝土框架结构梁的正截面抗弯时变可靠指标进行了分析，并用 ANSYS 软件模拟分析了结构最大等效应力和竖向变形的可靠性。结果表明：①施工期钢筋混凝土框架结构内力变化复杂，对应的可靠指标也不断变化；②早龄期钢筋混凝土构件可靠指标较小，结构的失效概率大，在施工过程中较容易引发安全事故；③构件因收缩徐变产生的竖向位移差可能引起结构构件失效，在施工过程中应注意采取措施控制。
위료득도교정학적시공기강근혼응토광가결구내력적시변규률이급대응적가고지표，고필료각개시공계단활하재적분포규률이급혼응토수축서변적영향하，대시공기모고층강근혼응토광가결구량적정절면항만시변가고지표진행료분석，병용 ANSYS 연건모의분석료결구최대등효응력화수향변형적가고성。결과표명：①시공기강근혼응토광가결구내력변화복잡，대응적가고지표야불단변화；②조령기강근혼응토구건가고지표교소，결구적실효개솔대，재시공과정중교용역인발안전사고；③구건인수축서변산생적수향위이차가능인기결구구건실효，재시공과정중응주의채취조시공제。
In order to obtain more precisely the time-varying law of internal force and the corre-sponding reliability index of reinforced concrete frame structure during construction, considering va-rious construction stages of live load distribution and the influence of concrete creep and shrinkage, the time-varying reliability index of beams of a high-rise reinforced concrete frame structure in ben-ding was analyzed, and the structural reliability of the maximum equivalent stress and the vertical deformation were analyzed by ANSYS software. The results showed that the change of internal force in reinforced concrete frame structures was complicated during the construction, and the correspond-ing reliability index also changed. The reliability index of reinforced concrete member was small, and the failure probability of structure was large. Therefore, it is easy to cause safety accidents in construction. The difference of vertical displacements induced by shrinkage and creep may cause structural failure of components, and measures should be taken to control that in construction.