关键词: 悬臂抗滑桩, 边坡, 模型试验, 振动台, 地震响应

Abstract: For researching seismic response and piles’ bending moment distribution regularity of the slope reinforced by cantilever stabilizing pile, some seismic response model experiments of slope reinforced by cantilever stabilizing pile were carried out by using large-scale shaking table in Beijing University of Technology’s Structures Laboratory. During the experiments, inputted earthquake motion of Chonghua town, recorded the time course of changes of the acceleration of the slope at different positions and made comparative analysis and collected strain of the pile so as to analyze the bending moment distribution of the pile. The results show that: in the process of earthquake, the slope acceleration enlarged from the bottom to the top; and the enlarged effect of slope top achieved maximum. The reinforcement effect and the soil arching effect of cantilever stabilizing pile restrict the dynamic response of the soil near the pile. The strain of the interface between the mounted side and the cantilever part of the pile increases rapidly as the input of seismic wave; the strain of the cantilever part decreases with the increase in height; those reflect the convex distribution regularity of the bending moment of the cantilever sliding pile.

Key words: cantilever stabilizing pile, slope, model experiment, shaking table, seismic response