Stability evaluation of finite soil slope in front of piles in landslide with displacement-based method

A new approach is proposed to evaluate the stability of a finite c-phi soil slope before the single row of piles based on the Bishop method, which considers the influence of the landslide's push force. The proposed model allows the analysis of the ultimate resistance of an isolate stabilizing pile below the slip surface via the displacement-based method. This approach takes into account the gradient of the slope, horizontal distance between the pile and the crest of the slope, and the pile spacing. The effectiveness of the proposed method is demonstrated by comparing the measured results and the calculated values by other methods. The comparison results show that the proposed approach is suitable for calculating the ultimate resistance of the pile below the slip surface under the finite slope condition. Moreover, through comparing the analysis results of the stability of the slope stabilization using the piles under the different conditions, it indicates that the gradient of the slope is the factor that has the greatest influence on the stability of the whole slope and the local stability of the finite soil slope in front of the pile.