An Experimental Study on the Deformation and Strength Characteristics of Q3 Loess under a Plain Strain Anisotropic Consolidation Condition
To study the strength, deformation characteristics, and intermediate principal stress of intact loess, vertical loading stress tests with different initial stress state k value were conducted under different confining pressures. Plane strain tests were carried out by the transformed true triaxial ap...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/8813707 |
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| author | Yu Zhang Yang Zhao Jin Liu Tian-Yi Meng Sheng-Jun Shao Fang-Tao She |
| author_facet | Yu Zhang Yang Zhao Jin Liu Tian-Yi Meng Sheng-Jun Shao Fang-Tao She |
| author_sort | Yu Zhang |
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| description | To study the strength, deformation characteristics, and intermediate principal stress of intact loess, vertical loading stress tests with different initial stress state k value were conducted under different confining pressures. Plane strain tests were carried out by the transformed true triaxial apparatus of Xi’an University of Technology. The study shows that loess tends to be in a plastic failure state in different confining pressures and k values, and the stress-strain relationship curve is of a hardening type. Results reveal that loess lateral and volume deformations have nonlinear relationships with its vertical deformation, and volume deformation shrinks in the process of shearing. The effect of confining pressure on soil deformation is greater than k value. The intermediate principal stress coefficient decreases with the increase of the confining pressure and transforms from increasing to decreasing with the increase of k value (ranging from 0.2 to 0.4). In brief, the loess failure strength is closely related to k value, confining stress, and spherical stress state. When k value increases, cohesion effect reduces, whereas internal friction angle increases linearly. The influence of k value on soil strength and deformation is closely related to confining pressure. |
| format | Article |
| id | doaj-art-e861b9a5b4054dd9b1ef107c3e9a748e |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-e861b9a5b4054dd9b1ef107c3e9a748e2025-02-03T06:46:45ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/88137078813707An Experimental Study on the Deformation and Strength Characteristics of Q3 Loess under a Plain Strain Anisotropic Consolidation ConditionYu Zhang0Yang Zhao1Jin Liu2Tian-Yi Meng3Sheng-Jun Shao4Fang-Tao She5Civil and Architecture Engineering, Xi’an Technological University, Xi’an, Shaanxi 710021, ChinaCivil and Architecture Engineering, Xi’an Technological University, Xi’an, Shaanxi 710021, ChinaCivil and Architecture Engineering, Xi’an Technological University, Xi’an, Shaanxi 710021, ChinaCivil and Architecture Engineering, Xi’an Technological University, Xi’an, Shaanxi 710021, ChinaShaanxi Key Laboratory of Loess Mechanics and Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaShaanxi Key Laboratory of Loess Mechanics and Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, ChinaTo study the strength, deformation characteristics, and intermediate principal stress of intact loess, vertical loading stress tests with different initial stress state k value were conducted under different confining pressures. Plane strain tests were carried out by the transformed true triaxial apparatus of Xi’an University of Technology. The study shows that loess tends to be in a plastic failure state in different confining pressures and k values, and the stress-strain relationship curve is of a hardening type. Results reveal that loess lateral and volume deformations have nonlinear relationships with its vertical deformation, and volume deformation shrinks in the process of shearing. The effect of confining pressure on soil deformation is greater than k value. The intermediate principal stress coefficient decreases with the increase of the confining pressure and transforms from increasing to decreasing with the increase of k value (ranging from 0.2 to 0.4). In brief, the loess failure strength is closely related to k value, confining stress, and spherical stress state. When k value increases, cohesion effect reduces, whereas internal friction angle increases linearly. The influence of k value on soil strength and deformation is closely related to confining pressure.http://dx.doi.org/10.1155/2021/8813707 |
| spellingShingle | Yu Zhang Yang Zhao Jin Liu Tian-Yi Meng Sheng-Jun Shao Fang-Tao She An Experimental Study on the Deformation and Strength Characteristics of Q3 Loess under a Plain Strain Anisotropic Consolidation Condition Advances in Civil Engineering |
| title | An Experimental Study on the Deformation and Strength Characteristics of Q3 Loess under a Plain Strain Anisotropic Consolidation Condition |
| title_full | An Experimental Study on the Deformation and Strength Characteristics of Q3 Loess under a Plain Strain Anisotropic Consolidation Condition |
| title_fullStr | An Experimental Study on the Deformation and Strength Characteristics of Q3 Loess under a Plain Strain Anisotropic Consolidation Condition |
| title_full_unstemmed | An Experimental Study on the Deformation and Strength Characteristics of Q3 Loess under a Plain Strain Anisotropic Consolidation Condition |
| title_short | An Experimental Study on the Deformation and Strength Characteristics of Q3 Loess under a Plain Strain Anisotropic Consolidation Condition |
| title_sort | experimental study on the deformation and strength characteristics of q3 loess under a plain strain anisotropic consolidation condition |
| url | http://dx.doi.org/10.1155/2021/8813707 |
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