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Slope Stability Analysis of Expressway Subgrade with Photovoltaic Facilities
Energy efficiency can be improved and the purpose of energy conservation and carbon reduction can be achieved by setting photovoltaic power generation facilities on the subgrade slope of expressways for solar power generation. However, the stability of the subgrade slope, which is the main structure of expressways, is related to the operation safety of expressways. Aiming at the stability problem of an expressway subgrade configured with photovoltaic power generation facilities, the analysis model was established through the numerical simulation analysis method, and the safety factors of the subgrade slope under different conditions were obtained. The results show that: (1) After the photovoltaic power generation facilities were installed on the subgrade of the expressway, the maximum shear strain of the slope under the action of photovoltaic panels and support loads was slightly greater than that without photovoltaic panels. Photovoltaic facilities had a slight impact on slope deformation. The safety factors of the slope with and without photovoltaic facilities were 4.36 and 4.33 respectively, which were relatively close. The structural load of photovoltaic panels was relatively small, which had little impact on the slope stability. (2) Under the influence of its stiffness, the column of photovoltaic facilities reinforced the soil of the subgrade slope. The deeper the buried depth of the column bottom was, the longer it was embedded in the stable soil layer, and the more obvious the reinforcement effect on the soil of the subgrade slope was. In the design stage, the buried depth of the column bottom should be set reasonably, and the reinforcement effect of the column on the subgrade slope should be made full use of. (3) The shear strength index of subgrade slope soil had a significant impact on slope stability. For the subgrade slope of expressways equipped with photovoltaic power generation facilities, the reduction of soil shear strength index would reduce the slope stability, among which the change in the internal friction angle had the most obvious impact on the slope stability. The setting position should be reasonably selected in the project site selection stage, and the construction method with less disturbance to the subgrade slope should be selected in the design and construction stage, ensuring the stability of the subgrade slope and the operation safety of expressways deployed with photovoltaic power generation facilities.
Slope Stability Analysis of Expressway Subgrade with Photovoltaic Facilities
Energy efficiency can be improved and the purpose of energy conservation and carbon reduction can be achieved by setting photovoltaic power generation facilities on the subgrade slope of expressways for solar power generation. However, the stability of the subgrade slope, which is the main structure of expressways, is related to the operation safety of expressways. Aiming at the stability problem of an expressway subgrade configured with photovoltaic power generation facilities, the analysis model was established through the numerical simulation analysis method, and the safety factors of the subgrade slope under different conditions were obtained. The results show that: (1) After the photovoltaic power generation facilities were installed on the subgrade of the expressway, the maximum shear strain of the slope under the action of photovoltaic panels and support loads was slightly greater than that without photovoltaic panels. Photovoltaic facilities had a slight impact on slope deformation. The safety factors of the slope with and without photovoltaic facilities were 4.36 and 4.33 respectively, which were relatively close. The structural load of photovoltaic panels was relatively small, which had little impact on the slope stability. (2) Under the influence of its stiffness, the column of photovoltaic facilities reinforced the soil of the subgrade slope. The deeper the buried depth of the column bottom was, the longer it was embedded in the stable soil layer, and the more obvious the reinforcement effect on the soil of the subgrade slope was. In the design stage, the buried depth of the column bottom should be set reasonably, and the reinforcement effect of the column on the subgrade slope should be made full use of. (3) The shear strength index of subgrade slope soil had a significant impact on slope stability. For the subgrade slope of expressways equipped with photovoltaic power generation facilities, the reduction of soil shear strength index would reduce the slope stability, among which the change in the internal friction angle had the most obvious impact on the slope stability. The setting position should be reasonably selected in the project site selection stage, and the construction method with less disturbance to the subgrade slope should be selected in the design and construction stage, ensuring the stability of the subgrade slope and the operation safety of expressways deployed with photovoltaic power generation facilities.
Slope Stability Analysis of Expressway Subgrade with Photovoltaic Facilities
Yu, Jinghong (author) / Lu, Jian (author)
2022-11-25
4817265 byte
Conference paper
Electronic Resource
English
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