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目前局限于一个水平地面运动分量的振型静力弹塑性分析(MPA)程序,扩展到了建筑物在同时受两个水平地面运动分量作用下平面内对称或非对称结构的三维分析程序。也给出了该方法的变异形式,称为实用振型静力弹塑性分析(PMPA)程序,这种分析方法直接从地震响应(或设计)谱中估算地震需求。对它计算超高层建筑的地震需求的准确度进行了评估,说明该程序对非线性系统的分析和线性系统的响应谱分析几乎一样准确。因此,对于实际应用而言,实用振型静力弹塑性分析程序提供了一个诱人的可替代方法,使得地震需求可以直接从(弹性)设计响应谱估算出,从而避免了非线性响应谱时程分析中选择和标定地面运动的复杂性。
At present, the mode-locked static elasto-plastic analysis (MPA) program, which is limited to a horizontal ground motion component, extends to a 3D analysis program of a structure in an in-plane symmetrical or asymmetrical structure under the action of two horizontal ground motion components simultaneously. A variation of this method is also given, called the PEMA program, which estimates seismic demand directly from the seismic response (or design) spectrum. The accuracy of its seismic demand calculation for super high-rise buildings was evaluated, showing that the procedure is almost as accurate for nonlinear systems as the linear systems for response spectrum analysis. Therefore, practical vibrational elasto-plastic analysis procedures provide a compelling and alternative method for practical applications so that the seismic demand can be estimated directly from the (elastic) design response spectrum, thus avoiding the nonlinear response spectrum The complexity of selecting and calibrating ground motions in a course analysis.