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原位沉积物由于土结构性的存在,应力水平和取样扰动对天然地基的压缩变形特性影响颇大。文章结合钻孔获得的原状土样,通过一系列室内物理力学试验,确定出结构屈服应力,并将e-logP压缩曲线以自重应力和屈服应力为界分为3段,对室内压缩曲线进行合理校正,再现土的原位压缩特性,充分考虑了土结构性对天然地基沉降的影响,使计算结果更趋合理,为地基处置方案的优化设计提供了理论基础。
In situ sediment due to the existence of soil structure, stress levels and sampling disturbances have a significant impact on the compression deformation characteristics of natural foundations. Based on a series of intact soil samples obtained by drilling, a series of laboratory physical and mechanical tests were carried out to determine the yield stress of the structure. The e-logP compression curve was divided into three sections by self-weight stress and yield stress, Correction and reappearance of in-situ compressive properties of soil, and fully consider the influence of soil structure on settlement of natural ground so as to make the calculation result more reasonable, which provides a theoretical basis for the optimal design of foundation disposal plan.