Using Triaxial Tests to Determine the Shearing Strength of Geogrid-Reinforced Sand

IF 0.7 Q4 MECHANICS

Studia Geotechnica et Mechanica Pub Date : 2020-09-25 DOI:10.2478/sgem-2020-0005

Š. Skuodis, N. Dirgėlienė, Jurgis Medzvieckas

引用次数: 5

Abstract

Abstract Geogrids are widely used in civil engineering projects to reinforce road and railway structures. This paper presents research on the shearing strength of soil samples that have been reinforced with geogrids. The relationship between soil and geogrids is explored and evaluated by modeling the mechanical behavior of heterogeneous materials. For the purposes of this research, data obtained from tests of unreinforced sand samples with triaxial cells were compared with the data obtained from tests of reinforced sand samples. It was found that the shearing strength for reinforced samples was higher (from 9% to 49%) compared to unreinforced samples. Some damage to the geogrid was detected during the experiment, and for this reason, the same tests were numerically simulated for both unreinforced samples and samples reinforced with geogrids. Numerical simulations revealed the main reasons for damage to the geogrids during triaxial testing.

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用三轴试验确定土工格栅加筋砂抗剪强度

土工格栅在土木工程中广泛应用于公路、铁路等结构的加固。本文对土工格栅加固土样的抗剪强度进行了研究。通过模拟非均质材料的力学行为，探讨了土与土工格栅之间的关系。为了本研究的目的，我们将未加筋三轴胞室砂样的试验数据与加筋砂样的试验数据进行了比较。结果表明，加筋试样的抗剪强度比未加筋试样高9% ~ 49%。在试验过程中发现了土工格栅的一些损伤，因此，对未加筋和加筋的土工格栅进行了相同的数值模拟试验。数值模拟揭示了三轴试验中土工格栅损坏的主要原因。

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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来源期刊

Studia Geotechnica et Mechanica MECHANICS-

CiteScore

1.30

自引率

16.70%

发文量

审稿时长

16 weeks

期刊介绍： An international journal ‘Studia Geotechnica et Mechanica’ covers new developments in the broad areas of geomechanics as well as structural mechanics. The journal welcomes contributions dealing with original theoretical, numerical as well as experimental work. The following topics are of special interest: Constitutive relations for geomaterials (soils, rocks, concrete, etc.) Modeling of mechanical behaviour of heterogeneous materials at different scales Analysis of coupled thermo-hydro-chemo-mechanical problems Modeling of instabilities and localized deformation Experimental investigations of material properties at different scales Numerical algorithms: formulation and performance Application of numerical techniques to analysis of problems involving foundations, underground structures, slopes and embankment Risk and reliability analysis Analysis of concrete and masonry structures Modeling of case histories