Calculation method on the minimum inserted depth of rigid anti-slide piles in the stable layer with oblique top surfaces in the downslope area

• Published in: Zhongguo dizhi zaihai yu fangzhi xuebao Vol. 32; no. 4; pp. 113 - 119
• Main Authors: Shiguo XIAO, Yuan QI, Laibin SUN
• Format: Journal Article
• Language: Chinese
• Published: Editorial Office of The Chinese Journal of Geological Hazard and Control 01.08.2021
• Subjects: anti-slide pile; dip of slip surface; embedded segment of a pile; limit analysis; minimum inserted depth
• ISSN: 1003-8035
• DOI: 10.16031/j.cnki.issn.1003-8035.2021.04-15

In order to calculate the minimum inserted depth of rigid anti-slide piles in stable soil with oblique top surface in the downslope area of the piles in a reinforced slope under a specified factor of safety, according to elastic-foundation-coefficient method under oblique top surface of the ground to determine lateral compressive stress on the soil mass surrounding embedded segment of the pile, together with plasticity limit analysis method to compute lateral ultimate bearing capacity related to dip angle of the slip surface in the downslope area of the piles, a computation procedure for the minimum inserted depth is proposed on the basis of the limitation condition that the maximum compressive stress is not more than the ultimate bearing capacity. The relationship between the minimum inserted depth and the dip angle can be determined. Analysis results of a practical example show that the minimum inserted depth of anti-slide piles increases nonlinearly with the dip angle, and changes significantly within the