【摘要】 结构非线性动力分析平台OpenSees具备丰富的材料、单元、模型化方法等分析选项和强大的求解功能。在OpenSees平台,对按我国规范设计的八度区二级和九度区一级典型钢筋混凝土框架结构进行了一系列罕遇烈度地震作用下的非线性动力反应分析。通过对分析结果的对比、判断,并结合各种模型化方法对结构地震反应的影响方式进行解释,从顶点侧移、层间侧移角、基底剪力、框架塑性铰分布等方面揭示了不同单元力学模型以及箍筋、板筋对结构整体、局部地震反应的影响规律。更多还原

【Abstract】 OpenSees is a software framework for the nonlinear dynamic response analysis of structures.It is abundant in materials,elements and model methods,as well as powerful solution functions.A series of nonlinear dynamic response analyses of typical frames under rare earthquakes were performed on the basis of the OpenSees framework.These two frames were designed according to the provisions of the second aseismic level for the regions of seismic intensity VIII and the first aseismic level for the regions of seismic intensity IX prescribed by Chinese building codes,respectively.Based on the comparison and judgement of analysis results,and the explanation of how model methods affect the structural seismic responses,the influence of different element mechanical models,hoops and slab reinforcements on the global and local seismic responses of structures were interpreted through roof displacement,interstory drift ratio,base shear and distribution of plastic hinges.更多还原