True-Triaxial Drained Test of Tengger Desert Sand
For the lack of accurate test results in design and maintenance of desert-crossing highways in the Tengger Desert of western China, the GDS true-triaxial system was used to conduct the drained test on dense sand. Under the condition of different intermediate principal stress ratio b-value, the resul...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8851165 |
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| author | Xuefeng Li Zhigang Ma Wennan Lu Yandong Wang |
| author_facet | Xuefeng Li Zhigang Ma Wennan Lu Yandong Wang |
| author_sort | Xuefeng Li |
| collection | DOAJ |
| description | For the lack of accurate test results in design and maintenance of desert-crossing highways in the Tengger Desert of western China, the GDS true-triaxial system was used to conduct the drained test on dense sand. Under the condition of different intermediate principal stress ratio b-value, the results showed that the stress-strain relationships in three orthogonal directions had significant differences, presenting significant anisotropy. The peak of the generalized shear stress increased with the increase of b-value. Except under the condition of b = 0, the specimen contracted firstly and then dilated, while the others dilated. The results of the different confining pressures showed that the stress-strain relationships appeared as a hardening type at low confining pressures, and as the confining pressure increased, the stress-strain relationships exhibit hardening, peaking, softening, and stable deformation characteristics. At low confining pressure, the contractive behaviors were not obvious, mainly as dilatancy, and as the confining pressure increased, the dilatancy increased gradually. The specimen transformed contract to dilatancy, and when the confining pressure reached 800 kPa, the specimen exhibited contractive behavior. The test results will provide data for subgrade design and construction in desert area. |
| format | Article |
| id | doaj-art-871a7bfcb74949f8ab30c0804dfa8d02 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-871a7bfcb74949f8ab30c0804dfa8d022025-08-20T03:37:57ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88511658851165True-Triaxial Drained Test of Tengger Desert SandXuefeng Li0Zhigang Ma1Wennan Lu2Yandong Wang3Solid Mechanics Institute, Ningxia University, Yinchuan 750021, ChinaSchool of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, ChinaSchool of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, ChinaSchool of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, ChinaFor the lack of accurate test results in design and maintenance of desert-crossing highways in the Tengger Desert of western China, the GDS true-triaxial system was used to conduct the drained test on dense sand. Under the condition of different intermediate principal stress ratio b-value, the results showed that the stress-strain relationships in three orthogonal directions had significant differences, presenting significant anisotropy. The peak of the generalized shear stress increased with the increase of b-value. Except under the condition of b = 0, the specimen contracted firstly and then dilated, while the others dilated. The results of the different confining pressures showed that the stress-strain relationships appeared as a hardening type at low confining pressures, and as the confining pressure increased, the stress-strain relationships exhibit hardening, peaking, softening, and stable deformation characteristics. At low confining pressure, the contractive behaviors were not obvious, mainly as dilatancy, and as the confining pressure increased, the dilatancy increased gradually. The specimen transformed contract to dilatancy, and when the confining pressure reached 800 kPa, the specimen exhibited contractive behavior. The test results will provide data for subgrade design and construction in desert area.http://dx.doi.org/10.1155/2020/8851165 |
| spellingShingle | Xuefeng Li Zhigang Ma Wennan Lu Yandong Wang True-Triaxial Drained Test of Tengger Desert Sand Advances in Civil Engineering |
| title | True-Triaxial Drained Test of Tengger Desert Sand |
| title_full | True-Triaxial Drained Test of Tengger Desert Sand |
| title_fullStr | True-Triaxial Drained Test of Tengger Desert Sand |
| title_full_unstemmed | True-Triaxial Drained Test of Tengger Desert Sand |
| title_short | True-Triaxial Drained Test of Tengger Desert Sand |
| title_sort | true triaxial drained test of tengger desert sand |
| url | http://dx.doi.org/10.1155/2020/8851165 |
| work_keys_str_mv | AT xuefengli truetriaxialdrainedtestoftenggerdesertsand AT zhigangma truetriaxialdrainedtestoftenggerdesertsand AT wennanlu truetriaxialdrainedtestoftenggerdesertsand AT yandongwang truetriaxialdrainedtestoftenggerdesertsand |