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震源、传播路径及近地表场地效应是影响地震动的关键因素,相关研究始终是地震学、地震工程学领域的研究热点,理解其物理过程、基本原理对地震动预测至关重要,直接服务于建筑结构的抗震设计.在频域上同时分离震源、传播路径及场地效应的广义反演方法近年来应用十分广泛,已取得了大量有价值的研究成果.本文介绍了广义反演方法的基本原理与发展历程,总结相关研究成果,主要包括震源参数相似关系、区域性品质因子及地震动场地效应等;最后探讨了该方法的应用局限性以及未来发展前景.
The source, propagation path and near-surface effect are the key factors that affect the ground motions. The related researches have always been hot topics in the field of seismology and seismic engineering. Understanding their physical processes and basic principles is very important for earthquake prediction. Seismic Design of Building Structures The generalized inversion method, which separates sources, propagation paths and site effects in the frequency domain, has been widely used in recent years and a great deal of valuable research results have been obtained.This paper introduces the basic principles of generalized inversion methods And its development history, summarizes the related research results, including the similarities of source parameters, regional quality factors and ground motion effects of ground motion. Finally, the limitations of the method and its future development are discussed.