Geotechnical Interpretation of the Geological Structure of Loess Covers in Lublin Region

IF 0.5 Q4 ENGINEERING, CIVIL
Krzysztof Nepelski
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Abstract

Abstract The characteristic feature of the geological structure in the Lublin Region is loess covers, which at the same time constitute the main subsoil for setting building structures. Geological structure is the basis for developing a geotechnical model of the subsoil, which may be identical to the geological model. However, these two types of models in many cases should differ, because the geotechnical model is developed depending on the type of structure, its dimensions, the method and depth of the foundation, and the loads transferred. Identifying geological layers only on the basis of lithology and subsoil state leads to significant and excessive simplification, especially when these layers occur at different depths. Soil stiffness and its bearing capacity depend not only on the state, i.e. wetness but also on several other factors which are difficult to identify based on a superficial macroscopic assessment, even with the verification of individual samples with laboratory tests. A good foundation for the geotechnical assessment of the subsoil is provided by in situ tests such as CPTU and DMT, which allow for a statistical evaluation of parameters. The work presents the methodology for creating a geotechnical model of the loess subsoil based on in situ tests.
卢布林地区黄土覆盖层地质构造的岩土工程解释
卢布林地区地质构造的特征是黄土覆盖层,同时也是建筑构筑物设置的主要底土。地质构造是建立底土岩土力学模型的基础,该模型可能与地质模型相同。然而,在许多情况下,这两种类型的模型应该有所不同,因为岩土工程模型的建立取决于结构的类型、尺寸、基础的方法和深度以及传递的荷载。仅根据岩性和底土状态识别地质层会导致严重和过度的简化,特别是当这些层发生在不同的深度时。土壤刚度及其承载能力不仅取决于状态,即湿度,还取决于其他几个因素,这些因素很难根据表面的宏观评估来识别,即使通过实验室测试对单个样品进行验证。CPTU和DMT等现场试验为地基岩土工程评估提供了良好的基础,可对参数进行统计评估。本文介绍了在现场试验的基础上建立黄土底土岩土力学模型的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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