全新世海相砂自然静水压力重建及其与抗剪强度的关系

IF 0.5 4区地球科学 Q4 GEOLOGY

Baltica Pub Date : 2019-12-16 DOI:10.5200/baltica.2019.2.5

Š. Skuodis, Gintaras Žaržojus, T. Tamošiūnas, N. Dirgėlienė

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引用次数: 0

摘要

本研究论文通过使用直接剪切装置来解释工程地质和岩土条件，该装置有可能在实验测试期间施加静水压力。作者认为，在确定砂土强度及其特性的工程地质和岩土特性方面，原位静水压力的评估和实验室试验中的重建是非常重要的一步。为了了解静水压力对剪切强度结果的影响，进行了有静水压力和无静水压力的直接剪切试验。所获得的结果清楚地表明了本研究期间分析的抗剪强度的差异。当所研究的砂土样品承受最大静水压力（σH=100kPa）时，与干土相比，内摩擦角（ξ’mean）的峰值高出21.24%。没有发现凝聚力的倾向。

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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Reconstruction of Holocene marine sand natural hydrostatic pressure and its relation with shearing strength

This research paper represents interpretation of engineering geological and geotechnical conditions by using a direct shear device with a possibility to apply hydrostatic pressure during the experimental testing. In the authors’ opinion, the evaluation of in-situ hydrostatic pressure and reconstruction of it in the laboratory tests is a very important step in the determination of the engineering geological and geotechnical properties of the sand strength and its behaviour. To understand the influence of hydrostatic pressure on shearing strength results, there were performed direct shear tests with and without hydrostatic pressure. Obtained results clearly show the differences in the shearing strength analysed during this study. When the investigated sand sample was loaded with maximum hydrostatic pressure (σH = 100 kPa), the peak value of the angle of internal friction (ϕ’mean) was 21.24% higher compared to that of dry soil. No tendencies were found for cohesion.

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来源期刊

Baltica 地学-地质学

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： BALTICA is an international periodical journal on Earth sciences devoted to the Baltic countries region and the Baltic Sea problems. This edition as a Yearbook is established in 1961 by initiative of Academician Vytautas Gudelis. Since 1993, an Editor-in-Chief of the journal became Academician Algimantas Grigelis. BALTICA is published biannually (in June and December) in cooperation with geoscientists of the circum-Baltic States. BALTICA is publishing original peer-reviewed papers of international interests on various Earth sciences issues. The particular emphasis is given to Quaternary geology, climate changes and development of ecosystems, palaeogeography, environmental geology, as well as stratigraphy, tectonics, sedimentology and surface processes with relevance to the geological history of the Baltic Sea and land areas. Journal emphasizes modern techniques, methodology and standards. The journal structure comprises original articles, short reviews, information, bibliography.