Modified Conventional Estimation Method of Residual Deformation of Road Embankment Caused By Earthquake

Abstract eng:
In recent years, the damage of road embankments caused by earthquakes occurred frequently in the mountainous area in Japan. The estimation method for residual deformation of the road embankments caused by earthquakes must be required in order to develop the effective aseismic reinforcement technique of the road embankment. In this paper, a modified conventional estimation method, which is composed of the dynamic finite element method and Newmark’s method based on seismic coefficient method, is proposed in order to estimate more accurately the residual deformation of road embankments caused by earthquakes. The availability of the proposed method is discussed through its application to a series of dynamic centrifuging model tests for seismic behavior road embankments. Also, the applicability of the proposed method to both toe reinforcement and barrier reinforcement method which has been developed in order to control the slip failure of embankments is discussed.

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