Numerical analysis on the stability of highway embankment reinforced with spiral bladed drain pipe reinforcements

Abstract

The purpose of this paper is to develop a new earth reinforcement technology called "The SDPR method" having both functions of a single earth reinforcement to increases the embankment strength and a drainage pipe to lower a ground water level in embankment at the same time. This paper summarizes the effectiveness of the SDPR method by means of unsaturated-saturated seepage analysis and slope stability analysis in terms of the drainage effect, reinforcement effect and unsaturation effect of SDPRs.