黏土地基桶形基础承载特性与参数敏感性分析

Bearing Capacity and Parameter Sensitivity Analysis of Soft Clay Bucket Foundation

为了研究黏土地基桶形基础的承载特性,开展了离心模型试验和数值分析研究,得到了荷载位移曲线,揭示了其主要破坏模式,分析了土体参数、基础尺寸对其承载特性的影响规律。结果表明,海上风机桶形基础的破坏模式主要为转动;土体修正剑桥模型参数回弹曲线斜率、泊松比、孔隙比、有效重度对承载特性影响较大,研究条件下桶形基础的最优高径比约为0.57。

In order to study the bearing capacity of the soft clay bucket foundation,centrifugal model and numerical analysis tests were carried out in this research. The load-displacement curve,main failure mode and the influence of the soil parameters and the basic dimensions were obtained. The main conclusions are： the main parameters affect the failure mode of the bucket foundation of off shore wind turbine are κ,ν,e0,γ,Under the research condition,the optimal bucket foundation height to diameter ratio is about 0. 57.