A Preparation on Practical Seismic Evaluation Method of the Existent Slopes

Abstract eng:
Slope failures on expressways were observed after the Japan Mid Niigata earthquake of 2004 and Noto Hanto earthquake of 2007, and it is an urgent task to evaluate the seismic stability of existing slopes along expressways. However, it is not realistic to check the seismic performance of whole slopes along an expressway by a detailed and complicated method. Thus, it is important to have a practical method to point out relatively weak sections in terms of seismic resistance. In this study, a seismic evaluation method for expressway embankments was proposed as a combination of a conventional pseudo-static approach and the sliding block model. The proposed method was applied to actual sites in Japan, and it showed that the proposed method enables a seismic performance assessment of an expressway system in a simple and easy way.

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