The prediction of foundation settlement is an important topic in loess filling engineering. Based on a filled foundation in Yan’an, China, this study explores the consolidation characteristics of compacted loess with different compaction energy and consolidation pressure through consolidation tests, analyzes the strain-time curve and refines the curve within 2 h, separates the primary and secondary consolidations, and obtains the critical time point between the primary and secondary consolidations. Deformation rate and cumulative deformation S_t were introduced to analyze the  − S_t curve at the secondary consolidation stage; the secondary consolidation coefficient was employed to describe the secondary consolidation characteristics of compacted loess. According to the secondary consolidation characteristics, a prediction model of loess settlement considering different compaction energy and fill thickness was proposed, and the applicability of the model was further analyzed. The model will facilitate in guiding the design and construction of loess filling engineering.

中文翻译：

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压实黄土固结特性试验研究

地基沉降预测是黄土充填工程中的一个重要课题。本研究以延安某地基为背景，通过固结试验探讨不同压实能量和固结压力的压实黄土的固结特征，分析应变-时间曲线并在2 h内对曲线进行细化，将原始和次固结，并获得主次固结之间的临界时间点。引入变形率和累积变形S _t来分析 -  S _t二次固结阶段的曲线；次固结系数用于描述压实黄土的次固结特征。根据二次固结特征，提出了考虑不同压实能量和填土厚度的黄土沉降预测模型，并进一步分析了该模型的适用性。该模型将有助于指导黄土充填工程的设计和施工。