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本文介绍一种方法,用以解决任意形状场地的地震反应分析中缺乏分析工具这一问题。在国内外学者提出的解析及半解析、数值分析方法中,动力有限元技术在研究场地条件对地震动的影响课题中是一个主要的工具。目前国内尚无普遍适用且完善的专门程序。作者利用八十年代引进的SAP5程序〔1〕,提出了对输入参数做预处理、对输出结果做后处理,进行二维(或空间)地震反应分析的方法。初步应用的结果表明,这种方法是可行的。
This article describes a method to solve the problem of lack of analytical tools in seismic response analysis of arbitrary shaped sites. Among the analytical and semi-analytical and numerical analysis methods proposed by scholars at home and abroad, the dynamic finite element technique is a major tool in studying the influence of site conditions on ground motion. At present, there is no universally applicable and perfect specialized program. The author used the SAP5 program introduced in 1980s [1] to propose methods for preprocessing input parameters, post-processing the output results, and performing two-dimensional (or spatial) seismic response analysis. The preliminary application results show that this method is feasible.