Abstract The actual settlement of foundations is one of the main topics in geotechnical engineering due to the complex soil-foundation interactions and nonlinear behavior of subsoil. To consider soil behaviour properly, continuous records of a cone penetration test (CPT), which have been rarely considered in the literature, can be applied to estimate the settlement of a shallow foundation (St). In this study, the possibility of predicting St via polynomial modelling has been investigated. The input parameters of the polynomial model are contact pressure (q) and corrected cone tip resistance (qt). To implement the model, datasets from 46 different geotechnical sites were employed. Fourteen rows of data were randomly selected for comparison with previous empirical equations, and the remaining datasets were selected for modelling stage. Also, the efficacy of the polynomial model, compared to the previous alternatives, has been assessed, and a straightforward approach for estimating St has been presented. It was observed that CPT records could be a beneficial alternative to estimate St for shallow foundations. Also, a sensitivity analysis was conducted to evaluate the effects of input parameters on St. Based on the sensitivity analysis, it was concluded that qt contributes the most impact on the settlement.

中文翻译：

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基于CPT记录-多项式模型的非粘性土浅地基沉降预测

摘要 地基实际沉降是岩土工程中复杂的地基相互作用和地基非线性行为的主要问题之一。为了正确考虑土壤行为，文献中很少考虑的锥入度试验 (CPT) 的连续记录可用于估计浅地基 (St) 的沉降。在这项研究中，研究了通过多项式建模预测 St 的可能性。多项式模型的输入参数是接触压力 (q) 和修正后的锥尖电阻 (qt)。为了实施该模型，使用了来自 46 个不同岩土工程站点的数据集。随机选取 14 行数据与之前的经验方程进行比较，其余数据集用于建模阶段。还，多项式模型的功效与之前的替代方案相比，已经进行了评估，并提出了一种直接的估计 St 的方法。据观察，CPT 记录可能是估算浅地基 St 的有益替代方法。此外，还进行了敏感性分析以评估输入参数对 St 的影响。基于敏感性分析，得出的结论是 qt 对沉降的影响最大。