复合地基临界桩长的研究

On critical length of pile in composite foundation

通过对柔性单桩竖向加荷、大面积荷载作用下复合地基中心单桩轴对称及路堤荷载作用下复合地基的有限元数值分析，探讨了临界桩长问题，得出了桩体临界桩长不仅与桩土模量比有关，而且与荷载分布有关的结论。

The problem of critical length of pile in composite foundation is studied by means of FEM analysis in which the loads are exerted separately on a single flexible pile,large area of flexible piles group and flexible piles group under road embankment.The conclusion is reached that the critical length of pile in composite foundation is related not only to the modular ratio of pile /soil but also to the load distribution.