扩底单桩临界桩长的数值模拟

Numerical simulation of critical length of belled single pile

基于地基变形的概念对均质地基上扩底桩单桩在不同荷载大小、不同桩土模量比、不同头径比的临界桩长进行了有限元数值模拟 ,得出扩底桩单桩临界桩长与桩土模量比和头径比有关但在容许承载力范围内与荷载大小无关的结论。

Based on the notion of foundation deformation, the critical length of single belled pile in the homogeneous soil is studied by means of finite element numerical simulation on different conditions such as different loads, different modulus ratio of pile to soil(K\- p /K\- s )and different diameter ratio of pile bottom to pile body (D/d).The conclusion is reached that the critical length of pile is related to the modulus ratio of pile to soil and to D/d. but independent of load magnitudes within the permited bearing capacity.