Investigation About Effect of Connection of Soil Nails with Slope Protection Works for Seismic Reinforcement of Embankment

Abstract

In recent years, reinforcements of railway embankments have been conducted for increasing the seismic resistance. Reinforcements of embankment body using soil nails are often adopted. For the prevention of seepage and erosion to rainfall, slope protection works are also constructed. The works can also contribute to the increase of seismic performance by connection with soil nails. However, these effects have not been studied clearly. In this paper, series of shaking table tests of model embankments with slope protection works and soil nails were conducted. From the series of shaking table tests, it was revealed that the seismic resistance of the embankment was increased by the slope protection works due to increasing the extension force of soil nails by connecting with the works. Furthermore, the design method of reinforcement of embankment was developed and validated.