Deformation Behavior of Saturated Soft Clay under Cyclic Loading with Principal Stress Rotation
Under long-term traffic loading, the soil elements in subgrade are subjected to continuous principal stress rotation. In order to study the deformation properties of soft clays under traffic loading with principal stress rotation, a series of cyclic torsional shear tests were conducted on Wenzhou so...
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| Format: | Article |
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MDPI AG
2021-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/19/8987 |
| _version_ | 1797516881161093120 |
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| author | Zunan Fu Guoshuai Wang Wenbo Song Yanming Yu Pengfei Wei Tingyu Wu |
| author_facet | Zunan Fu Guoshuai Wang Wenbo Song Yanming Yu Pengfei Wei Tingyu Wu |
| author_sort | Zunan Fu |
| collection | DOAJ |
| description | Under long-term traffic loading, the soil elements in subgrade are subjected to continuous principal stress rotation. In order to study the deformation properties of soft clays under traffic loading with principal stress rotation, a series of cyclic torsional shear tests were conducted on Wenzhou soft clays under different torsional cyclic stress ratios and degrees of principal stress rotation. The test results showed the stiffness softening of soil under long-term traffic loading. In addition, the principal stress rotation induced by traffic loading aggravated the deformation of clay samples and pore pressure accumulation. A modified dynamic pore pressure model was applied to consider the effect of principal stress rotation on undrained cumulative pore pressure, predicting the growth of cumulative pore pressure at different cycles. Considering loading cycles and the principal stress rotation, a modified Hardin–Drnevich (H-D) backbone curve model under traffic loading with principal stress rotation was proposed, and the predictive values of this model agreed well with the experimental values. Compared with the traditional H–D model, this model better reflects the cyclic deformation of soft clays under long-term traffic loading with principal stress rotation. |
| first_indexed | 2024-03-10T07:07:04Z |
| format | Article |
| id | doaj.art-c7bf1e3e9e98483f8f06c4cb4b3e9572 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T07:07:04Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-c7bf1e3e9e98483f8f06c4cb4b3e95722023-11-22T15:46:03ZengMDPI AGApplied Sciences2076-34172021-09-011119898710.3390/app11198987Deformation Behavior of Saturated Soft Clay under Cyclic Loading with Principal Stress RotationZunan Fu0Guoshuai Wang1Wenbo Song2Yanming Yu3Pengfei Wei4Tingyu Wu5Huadong Engineering Corporation Limited, Hangzhou 310000, ChinaZhejiang Huadong Engineering Construction Management Co., Ltd., Hangzhou 310000, ChinaZhejiang Huadong Engineering Construction Management Co., Ltd., Hangzhou 310000, ChinaHuadong Engineering Corporation Limited, Hangzhou 310000, ChinaCollege of Civil Engineering, Zhejiang University of Technology, Hangzhou 310000, ChinaCollege of Civil Engineering, Zhejiang University of Technology, Hangzhou 310000, ChinaUnder long-term traffic loading, the soil elements in subgrade are subjected to continuous principal stress rotation. In order to study the deformation properties of soft clays under traffic loading with principal stress rotation, a series of cyclic torsional shear tests were conducted on Wenzhou soft clays under different torsional cyclic stress ratios and degrees of principal stress rotation. The test results showed the stiffness softening of soil under long-term traffic loading. In addition, the principal stress rotation induced by traffic loading aggravated the deformation of clay samples and pore pressure accumulation. A modified dynamic pore pressure model was applied to consider the effect of principal stress rotation on undrained cumulative pore pressure, predicting the growth of cumulative pore pressure at different cycles. Considering loading cycles and the principal stress rotation, a modified Hardin–Drnevich (H-D) backbone curve model under traffic loading with principal stress rotation was proposed, and the predictive values of this model agreed well with the experimental values. Compared with the traditional H–D model, this model better reflects the cyclic deformation of soft clays under long-term traffic loading with principal stress rotation.https://www.mdpi.com/2076-3417/11/19/8987soft claytraffic loadingprincipal stress rotationdynamic hollow cylinder apparatusbackbone curve |
| spellingShingle | Zunan Fu Guoshuai Wang Wenbo Song Yanming Yu Pengfei Wei Tingyu Wu Deformation Behavior of Saturated Soft Clay under Cyclic Loading with Principal Stress Rotation Applied Sciences soft clay traffic loading principal stress rotation dynamic hollow cylinder apparatus backbone curve |
| title | Deformation Behavior of Saturated Soft Clay under Cyclic Loading with Principal Stress Rotation |
| title_full | Deformation Behavior of Saturated Soft Clay under Cyclic Loading with Principal Stress Rotation |
| title_fullStr | Deformation Behavior of Saturated Soft Clay under Cyclic Loading with Principal Stress Rotation |
| title_full_unstemmed | Deformation Behavior of Saturated Soft Clay under Cyclic Loading with Principal Stress Rotation |
| title_short | Deformation Behavior of Saturated Soft Clay under Cyclic Loading with Principal Stress Rotation |
| title_sort | deformation behavior of saturated soft clay under cyclic loading with principal stress rotation |
| topic | soft clay traffic loading principal stress rotation dynamic hollow cylinder apparatus backbone curve |
| url | https://www.mdpi.com/2076-3417/11/19/8987 |
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