填海区大直径超长灌注桩承载机理研究

Capacity Mechanism Study on the Large Diameter and Super-long Concrete Pile in Reclamation Area

结合深圳某填海区大直径超长灌注桩的超大吨位静载试验,通过埋设于桩身的光纤进行桩身内力测试,得到桩身轴力分布、桩侧摩阻力分布和桩端阻力发挥特性及其随荷载变化的规律,揭示了填海区大直径超长灌注桩的承载机理的某些特征,对填海区大直径超长灌注桩的设计和施工有一定指导意义。

Combined with a large diameter and super-long concrete pile's static-load-test which is super-large tonnage on reclamation area in Shenzhen,this paper utilized the internal force measuring through an optical fibre of pile,obtained the axial force distribution and side resistance distribution and the characteristic of tip resistance of the pile with the variation of the load. The authors disclosed certain features of the capacity mechanism of large diameter and super-long concrete pile in reclamation area,which had a certain significance for the design and construction of large diameter and super-long concrete pile on reclamation area.