本文通过ABAQUS有限元软件模拟扩底桩水平受荷变形过程,研究桩基的埋深对扩底桩的水平受荷特性的影响.研究结果表明,在相同水平荷载作用下,埋置深度与位移成反比,埋深越浅,桩顶位移越大;在一定桩长范围内,桩埋深的增加能有效提高扩底桩的水平承载力;桩侧土压力随埋置深度加深呈抛物线变化,在扩大头与直身段连接处发生突变;桩的埋深及桩顶水平力对桩底的土压力均有影响.%In this paper, ABAQUS finite element software is used to simulate the horizontal loading deformation process of belled pile, and used to study the influence of the buried depth of pile foundation has on the horizontal loading characteristics of belled pile. The results show that the embedded depth is inversely proportional to the displacement under the same horizontal loading, that is, the buried depth is shallower , the displacement of the top of the pile is greater.In the certain range of pile length, increasing the pile depth can effectively improve the horizontal bearing capacity of belled pile. The lateral earth pressure of pile side is parabolic distribution with the deepening of depth, and there is a sudden change in the connection between head and straight part. The buried depth of pile and the horizontal force at the top of pile have influence on the earth pressure at the bottom of pile.
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