关键词: 全埋刚架桩, 单排抗滑桩, 边坡, 强度折减有限元法, 数值模拟

Abstract: This paper presents a case history of the comparative study of a single row of anti-slide pile used in a practical slope reinforcement project is equivalent to a fully buried rigid frame piles by from the principle of the equal concrete consumption. The three-dimensional finite element model of the fully buried rigid frame piles and a single row of anti-slide pile for slope reinforcement is established by using the finite element analysis software ABAQUS. The factor of safety, horizontal displacement, internal force and displacement distribution of the two types of piles are obtained. From the quantitative point of view, the differences of the effect and stress between the rigid frame pile and the single row pile are compared intuitively to discuss the advantages of the rigid frame pile in slope reinforcement. Comparing with single row anti-slide pile, the results show that, the bending moment distribution of single row anti slide piles is a “bow” shape, while that fully embedded rigid frame piles is an “S” shape. Due to the connections of the continuous waler, the fully buried rigid frame pile bears less internal force. The displacement of the slope strengthened by the fully buried rigid frame pile is smaller, the factor of safety is larger, and the slope is therefore safer.

Key words: Fully Buried Rigid Frame Piles, Single-Row Anti-Slide Pile, Slope, Strength Reduction FEM, Numerical Simulation