دورية أكاديمية
The Determination of Pullout Parameters for Sand with a Geogrid
| العنوان: | The Determination of Pullout Parameters for Sand with a Geogrid |
|---|---|
| المؤلفون: | Kyungho Park, Daehyeon Kim, Jongbeom Park, Hyunho Na |
| المصدر: | Applied Sciences, Vol 11, Iss 1, p 355 (2020) |
| بيانات النشر: | MDPI AG, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Technology LCC:Engineering (General). Civil engineering (General) LCC:Biology (General) LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | pullout parameter, extensible geogrid reinforcement, effective confining stress method, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | The concept of designing mechanically stabilized earth (MSE) walls is divided into internal and external stability review methods, and one of the design factors required in internal stability analysis is the frictional characteristics between soil and geogrids for civil engineering applications. Typical methods for evaluating the frictional characteristics between soil and geogrids include the direct shear test and pullout test. It is desirable to apply the pullout test to geogrid reinforcements for pulling out geogrids embedded in soil, to measure both the surface-frictional force and passive resistance at the same time. Pullout parameters can be significantly affected by confining the stress and tensile strength of reinforcements. In general, the pullout parameters tend to be overestimated for low confining stresses in the pullout test, and underestimated for high confining stresses. Therefore, to address these issues, this study aims to evaluate the influence of the confining stress and the tensile strength of a geogrid reinforcement in the pullout test, and to propose a reasonable method for obtaining practical pullout parameters. Based on the pullout tests, the maximum pullout force depending on the tensile strength of the geogrid reinforcement was measured for one-third of the reinforcement tensile strength, and it was ruptured when pullout force greater than the maximum pullout force was exerted. Furthermore, it was observed that, in the reinforcement pullout test, pullout force was measured in the whole area of the reinforcement at a confining stress smaller than one-half of the tensile strength of the grid. As a result, the effective confining stress method considering only the confining stress at which the reinforcement is fully pulled out to develop the pullout characteristics can be a practical method for obtaining pullout parameters without regard to the reinforcement tensile strength. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 11010355 2076-3417 |
| Relation: | https://www.mdpi.com/2076-3417/11/1/355; https://doaj.org/toc/2076-3417 |
| DOI: | 10.3390/app11010355 |
| URL الوصول: | https://doaj.org/article/c51189ffca404b63b4130a16907a9372 |
| رقم الأكسشن: | edsdoj.51189ffca404b63b4130a16907a9372 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 11010355 20763417 |
|---|---|
| DOI: | 10.3390/app11010355 |