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现有埋深基础的沉降计算方法是基于地面加载的相关理论和经验系数提出的。通过对实际埋深基础、地面、坑内和体内加载模型的分析,发现埋深基础的沉降既有埋深效应,还受基础刚度的影响。对此,将基础假设为相应大小的地基土,即柔性埋深基础,其沉降计算式可综合弹性半空间体内加载的应力解析式和分层总和法得到;后用有限元方法分析基础刚度对沉降的影响规律,并得到刚度调节系数;将两者结合形成埋深基础沉降实用计算方法,对比发现其较现有方法有更好的准确度。
The existing settlement calculation method of deep foundation is based on the theory and experience coefficient of ground loading. By analyzing the actual burial depth, ground, pit and body load models, it is found that the settlement of the buried depth has both the depth effect and the influence of the foundation stiffness. In this regard, the basic assumption for the corresponding size of the foundation soil, that is, the foundation of the flexible embankment, the settlement formula can be integrated elastic half-space load stress analysis and stratified summation; finite element method after the foundation stiffness analysis Settling effect and get the stiffness adjustment coefficient; combining the two to form a practical calculation method of foundation settlement of buried depth, and find that it has better accuracy than the existing methods.