Active Earth Pressure of Limited <i>C</i>-<i>φ</i> Soil Based on Improved Soil Arching Effect
For <i>c</i>-<i>φ</i> soil formation (cohesive soil) of limited width with ground surface overload behind a deep retaining structure, a modified active earth pressure calculation model is established in this study. And three key issues are addressed through improved soil arch...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/9/3243 |
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| author | Meilin Liu Xiangsheng Chen Zhenzhong Hu Shuya Liu |
| author_facet | Meilin Liu Xiangsheng Chen Zhenzhong Hu Shuya Liu |
| author_sort | Meilin Liu |
| collection | DOAJ |
| description | For <i>c</i>-<i>φ</i> soil formation (cohesive soil) of limited width with ground surface overload behind a deep retaining structure, a modified active earth pressure calculation model is established in this study. And three key issues are addressed through improved soil arching effect. First, the soil-wall interaction mechanism is determined by considering the soil arching effect. The slip surface of a limited soil is proved to be a double-fold line passing through the retaining wall toe and intersecting the side wall of the existing underground structure until it reaches the ground surface along the existing side wall. Second, the limited width boundary is explicated. And third, the variation in the active earth pressure from parameters of limited <i>c</i>-<i>φ</i> soil is determined. The lateral active earth pressure coefficient is nonlinear distributed based on the improved soil arching effect of the symmetric catenary curve. Furthermore, the active earth pressure distribution, the tension crack at the top of the retaining wall and the resultant force and its action point were obtained. By comparing with the existing analytical methods, such as the Rankine method, it demonstrates that the model proposed in this study is much closer to the measured and numerical results. Ignoring the influence of soil cohesion and the limited width will exponentially reduce the overall stability of the retaining structure and increase the risk of accidents. |
| first_indexed | 2024-03-10T19:59:24Z |
| format | Article |
| id | doaj.art-71f8863b172141198a43bf50c94cb80f |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T19:59:24Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-71f8863b172141198a43bf50c94cb80f2023-11-19T23:40:25ZengMDPI AGApplied Sciences2076-34172020-05-01109324310.3390/app10093243Active Earth Pressure of Limited <i>C</i>-<i>φ</i> Soil Based on Improved Soil Arching EffectMeilin Liu0Xiangsheng Chen1Zhenzhong Hu2Shuya Liu3Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, ChinaShenzhen Metro Group Co., Ltd., Shenzhen 518026, ChinaTsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, ChinaShenzhen Metro Group Co., Ltd., Shenzhen 518026, ChinaFor <i>c</i>-<i>φ</i> soil formation (cohesive soil) of limited width with ground surface overload behind a deep retaining structure, a modified active earth pressure calculation model is established in this study. And three key issues are addressed through improved soil arching effect. First, the soil-wall interaction mechanism is determined by considering the soil arching effect. The slip surface of a limited soil is proved to be a double-fold line passing through the retaining wall toe and intersecting the side wall of the existing underground structure until it reaches the ground surface along the existing side wall. Second, the limited width boundary is explicated. And third, the variation in the active earth pressure from parameters of limited <i>c</i>-<i>φ</i> soil is determined. The lateral active earth pressure coefficient is nonlinear distributed based on the improved soil arching effect of the symmetric catenary curve. Furthermore, the active earth pressure distribution, the tension crack at the top of the retaining wall and the resultant force and its action point were obtained. By comparing with the existing analytical methods, such as the Rankine method, it demonstrates that the model proposed in this study is much closer to the measured and numerical results. Ignoring the influence of soil cohesion and the limited width will exponentially reduce the overall stability of the retaining structure and increase the risk of accidents.https://www.mdpi.com/2076-3417/10/9/3243active earth pressure<i>c</i>-<i>φ</i> soillimited widthlimit equilibrium methodsoil arching effect |
| spellingShingle | Meilin Liu Xiangsheng Chen Zhenzhong Hu Shuya Liu Active Earth Pressure of Limited <i>C</i>-<i>φ</i> Soil Based on Improved Soil Arching Effect Applied Sciences active earth pressure <i>c</i>-<i>φ</i> soil limited width limit equilibrium method soil arching effect |
| title | Active Earth Pressure of Limited <i>C</i>-<i>φ</i> Soil Based on Improved Soil Arching Effect |
| title_full | Active Earth Pressure of Limited <i>C</i>-<i>φ</i> Soil Based on Improved Soil Arching Effect |
| title_fullStr | Active Earth Pressure of Limited <i>C</i>-<i>φ</i> Soil Based on Improved Soil Arching Effect |
| title_full_unstemmed | Active Earth Pressure of Limited <i>C</i>-<i>φ</i> Soil Based on Improved Soil Arching Effect |
| title_short | Active Earth Pressure of Limited <i>C</i>-<i>φ</i> Soil Based on Improved Soil Arching Effect |
| title_sort | active earth pressure of limited i c i i φ i soil based on improved soil arching effect |
| topic | active earth pressure <i>c</i>-<i>φ</i> soil limited width limit equilibrium method soil arching effect |
| url | https://www.mdpi.com/2076-3417/10/9/3243 |
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