Studies in recent decades demonstrate the significant effect of stress configuration (e.g., vertical stress and lateral confinement) on the shear strength or, in this study, the cone penetration test (CPT) results. Addition of a surcharge over the ground changes the stress condition, and consequently, the CPT tip resistance. In this study, the results of different CPTs conducted before and after backfilling with various thicknesses in a land development project were reviewed while focusing on the trend of an increase in CPT penetration resistance due to the additional surcharge. Both pre- to post-fill stress ratios and soil type affect the rise in corrected \({q}_{c}\) values after backfilling. Moreover, there has always been a sudden increase in \({q}_{c}\) values around the pre-fill surface in all studied cases. In this study, another approach was derived from the reanalysis of CPT data from a specific site for predicting the post-fill corrected \({q}_{c}\) from pre-fill results by considering the above-mentioned factor. Likewise, post-fill results were predicted by depth-normalized pre-fill CPT results using Robertson’s normalization method. The proposed approach in this study showed a better match with the site data compared to the normalization method, especially at and around the pre-fill surface.

近几十年来的研究证明了应力配置（例如，垂直应力和侧向限制）对剪切强度的显着影响，或者在本研究中，锥入度测试 (CPT) 结果。在地面上增加附加费会改变应力条件，从而改变 CPT 尖端电阻。在这项研究中，回顾了土地开发项目中不同厚度回填前后不同 CPT 的结果，同时重点关注 CPT 渗透阻力因附加附加费而增加的趋势。填充前后的应力比和土壤类型都会影响回填后校正后的\({q}_{c}\)值的上升。而且\({q}_{c}\)在所有研究案例中预填充表面周围的值。在本研究中，另一种方法源自对来自特定站点的 CPT 数据的重新分析，用于通过考虑上述因素来预测填充前结果的填充后校正\({q}_{c}\)。同样，使用罗伯逊的归一化方法，通过深度归一化的预填充 CPT 结果来预测填充后的结果。与归一化方法相比，本研究中提出的方法显示出与现场数据的更好匹配，尤其是在预填充表面及其周围。