Response analysis of residual soil slope considering crack development under drying−wetting cycles
In order to study the response of granite residual soil slope with cracks under different number of drying-wetting cycles (D-W cycles), model test was carried out and the crack width expansion index was quantified by investigating the crack images. Based on the direct shear test, the calculation for...
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| Format: | Article |
| Language: | English |
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SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717
2021-07-01
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| Series: | Rock and Soil Mechanics |
| Subjects: | |
| Online Access: | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2020.6504 |
| _version_ | 1818536920058167296 |
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| author | LIU Yue CHEN Dong-xia WANG Hui YU Jia-jing |
| author_facet | LIU Yue CHEN Dong-xia WANG Hui YU Jia-jing |
| author_sort | LIU Yue |
| collection | DOAJ |
| description | In order to study the response of granite residual soil slope with cracks under different number of drying-wetting cycles (D-W cycles), model test was carried out and the crack width expansion index was quantified by investigating the crack images. Based on the direct shear test, the calculation formulas of soil strength degradation and crack depth were developed. Then, the model test and the numerical simulation results were compared to analyze the response of the residual soil slope considering crack extension. The results showed that the fractures width expansion in residual soil under D-W cycles followed the Logistic model, and there was a quantitative relationship between fracture depth and strength degradation. The fracture depth tended to be stable with the increase of D-W cycles. When the number of D-W cycles was small, the change of moisture content at the bottom of the slope lags significantly behind that at the top and the middle of the slope, however, the change of moisture content at each position of the slope tended to be the same with the increase of D-W cycles. The deformation at the bottom and the middle of the slope with the crack expansion tended to be the same compared to the slope without cracks, however, the deformation at the top area was larger, which led to the increase of the deformation gap between the top and bottom of the cracked slope. |
| first_indexed | 2024-12-11T18:44:08Z |
| format | Article |
| id | doaj.art-5c42ddbb783943b0ac45630f60dc7aed |
| institution | Directory Open Access Journal |
| issn | 1000-7598 |
| language | English |
| last_indexed | 2024-12-11T18:44:08Z |
| publishDate | 2021-07-01 |
| publisher | SCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717 |
| record_format | Article |
| series | Rock and Soil Mechanics |
| spelling | doaj.art-5c42ddbb783943b0ac45630f60dc7aed2022-12-22T00:54:31ZengSCIENCE PRESS , 16 DONGHUANGCHENGGEN NORTH ST, BEIJING, PEOPLES R CHINA, 100717Rock and Soil Mechanics1000-75982021-07-014271933194310.16285/j.rsm.2020.6504Response analysis of residual soil slope considering crack development under drying−wetting cyclesLIU Yue 0CHEN Dong-xia1WANG Hui2YU Jia-jing 31. Department of Civil Engineering, Xiamen University, Xiamen, Fujian 361005, China 2. Fujian Key Laboratory of Geohazard Prevention, Fuzhou, Fujian 350002, China1. Department of Civil Engineering, Xiamen University, Xiamen, Fujian 361005, China 3. Xiamen Engineering Technology Center for Intelligent Maintenance of Infrastructure, Xiamen, Fujian 361005, ChinaAdministrative Committee of Dujiangyan Economic Development Zone, Dujiangyan, Sichuan 611830, ChinaDepartment of Civil Engineering, Xiamen University, Xiamen, Fujian 361005, ChinaIn order to study the response of granite residual soil slope with cracks under different number of drying-wetting cycles (D-W cycles), model test was carried out and the crack width expansion index was quantified by investigating the crack images. Based on the direct shear test, the calculation formulas of soil strength degradation and crack depth were developed. Then, the model test and the numerical simulation results were compared to analyze the response of the residual soil slope considering crack extension. The results showed that the fractures width expansion in residual soil under D-W cycles followed the Logistic model, and there was a quantitative relationship between fracture depth and strength degradation. The fracture depth tended to be stable with the increase of D-W cycles. When the number of D-W cycles was small, the change of moisture content at the bottom of the slope lags significantly behind that at the top and the middle of the slope, however, the change of moisture content at each position of the slope tended to be the same with the increase of D-W cycles. The deformation at the bottom and the middle of the slope with the crack expansion tended to be the same compared to the slope without cracks, however, the deformation at the top area was larger, which led to the increase of the deformation gap between the top and bottom of the cracked slope.http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2020.6504drying-wetting cyclesgranite residual soilcrackwater contentdeformation |
| spellingShingle | LIU Yue CHEN Dong-xia WANG Hui YU Jia-jing Response analysis of residual soil slope considering crack development under drying−wetting cycles Rock and Soil Mechanics drying-wetting cycles granite residual soil crack water content deformation |
| title | Response analysis of residual soil slope considering crack development under drying−wetting cycles |
| title_full | Response analysis of residual soil slope considering crack development under drying−wetting cycles |
| title_fullStr | Response analysis of residual soil slope considering crack development under drying−wetting cycles |
| title_full_unstemmed | Response analysis of residual soil slope considering crack development under drying−wetting cycles |
| title_short | Response analysis of residual soil slope considering crack development under drying−wetting cycles |
| title_sort | response analysis of residual soil slope considering crack development under drying wetting cycles |
| topic | drying-wetting cycles granite residual soil crack water content deformation |
| url | http://rocksoilmech.whrsm.ac.cn/EN/10.16285/j.rsm.2020.6504 |
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