【摘要】 以典型钢筋混凝土框架结构校舍为研究对象,运用SAP2000有限元分析软件,研究了典型钢筋混凝土框架校舍局部构件的加固对结构整体性能(包括整体框架静力抗侧刚度、整体框架动力特性)的影响,并进行了地震反应谱分析、线性时程分析和静力非线性分析(Pushover分析)。结果表明:此类结构局部构件的加固,对整体框架静力抗侧刚度、层间位移角、动力特性、规范地震反应谱下的内力峰值、塑性铰出现顺序以及不同地震作用下的构件内力及节点反应谱峰值,均存在较大的影响,且结构在大震下的构件屈服顺序亦发生了改变,在实际工程中应当引起重视。更多还原

【Abstract】 Taking the typical school building of reinforced concrete frame structure as a research object,the influence of local members strengthening on the overall performance of the typical school building of reinforced concrete frame structure was explored by finite element software SAP2000.The contents cover the static lateral stiffness of the whole reinforced concrete frame structure,the dynamic performance of the whole frame,response spectrum analysis,static nonlinear analysis(pushover analysis) and the calculation of linear time history under three different earthquake records.The results show that the local member strengthening greatly affects the static lateral stiffness of the whole frame,the dynamic performance,story drift ratio,the peak of internal forces under standard earthquake spectrum of current Chinese code,appearing order of plastic hinge,node response spectrum under three different earthquakes,and the yield order of members when the earthquake happens.Much attention should be paid to it in practical projects.更多还原