現場計測(1)

[III-431] 有限要素法による表面波探査の簡便逆解析手法

〇西村 伸一¹、任 宇翔¹、柴田 俊文¹ (1.岡山大学)

キーワード：表面波探査、動的有限要素法、逆解析、ヤング率

As a kind of non-destructive seismic method, Surface-wave methods could be performed on surveying stiffness of near-surface. Procedures of the methods are data acquisition, processing and inversion. Spectral analysis are used for inversion in conventional methods. This research propose a new simplified method for inversion by comparing first arrival between finite element modeling and in-situ investigation. Parameters of finite element model are regarded as solution of inversion,when the error of those become minimum.Golden section search were used to search the minimum error.