NEW VIEWPOINT ON AXIAL STIFFNESS OF SINGLE PILES
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摘要: 利用荷载传递法,采用Ramberg-Osgood三参数幂函数模型来模拟桩侧和桩端的荷载传递,构造合理的地基模型,对均质地基中摩擦桩的轴向刚度进行了较为详尽的参数讨论,指出影响桩基轴向刚度的主要因素,并引入衡量桩土系统刚度的无量纲系数=(Gavg/Ep)(l/d),揭示了无量纲系数对桩基荷载传递的控制作用及其与桩基轴向割线刚度的良好的统一。Abstract: Based on load transfer approach and Ramberg-Osgood models for simulating the side resistance and tip resistance of a pile, the parameter studies on axial stiffness of single piles in a homogenous ground are conducted. A constant and dimensionaless rigidity index of pile-soil system,=(Gavg/Ep)(l/d) , is introduced and its dominant influence on the load transfer of a pile foundation is revealed.
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Key words:
- piles foundation /
- axial stiffness /
- loading transfer method
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