Study on the Effects of Influence Factors on the Stress and Deformation Characteristics of Ultra-High CFRDs
A sensitivity analysis was conducted to evaluate several factors, including dam height, bank slope gradient, water storage times, and phased panel filling, on concrete-faced rockfill dams (CFRDs). The analysis identified the three most significant factors to examine their impacts on the stress-defor...
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MDPI AG
2024-09-01
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| author | Hongmei Li Jianxin Wang Yanyuan Lv Chengming Feng |
| author_facet | Hongmei Li Jianxin Wang Yanyuan Lv Chengming Feng |
| author_sort | Hongmei Li |
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| description | A sensitivity analysis was conducted to evaluate several factors, including dam height, bank slope gradient, water storage times, and phased panel filling, on concrete-faced rockfill dams (CFRDs). The analysis identified the three most significant factors to examine their impacts on the stress-deformation characteristics of CFRDs. The results show that the order of influence on the dam body’s stress and deformation characteristics is as follows: dam height > bank slope gradient > water storage times > panel phased construction. From the perspective of stress-deformation of the face slab, water storage times predominantly affect tensile stress, while the bank slope gradient exerts the greatest influence on compressive stress. As the bank slope gradient decreases, the panel’s lateral restraint diminishes, leading to a decrease in the panel’s extrusion efficacy. Consequently, there are notable variations in the panel’s compressive stresses. An increase in dam height correlates with escalating stress and deformation in both the dam and face slab. As the bank slope gradient decreases, the deformation of the dam and face slab, as well as the range of tensile stress of the face slab, also increase. In contrast to a single water storage scenario, the face slab has experienced greater stress and deformation during the initial impoundment under multiple impoundment conditions. Therefore, multiple water storage schemes result in reduced deflection, axial horizontal displacement, and tensile stresses both along the slope and axial in the face slab. Furthermore, the tensile area at the bottom of the face slab transitions into a compressive area. |
| format | Article |
| id | doaj-art-2242f18ac7064a2197f6c2fea043d8fd |
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| issn | 2076-3417 |
| language | English |
| publishDate | 2024-09-01 |
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| spelling | doaj-art-2242f18ac7064a2197f6c2fea043d8fd2025-08-20T01:55:58ZengMDPI AGApplied Sciences2076-34172024-09-011418826810.3390/app14188268Study on the Effects of Influence Factors on the Stress and Deformation Characteristics of Ultra-High CFRDsHongmei Li0Jianxin Wang1Yanyuan Lv2Chengming Feng3College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, ChinaXinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Xinjiang Agricultural University, Urumqi 830052, ChinaCollege of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, ChinaCollege of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, ChinaA sensitivity analysis was conducted to evaluate several factors, including dam height, bank slope gradient, water storage times, and phased panel filling, on concrete-faced rockfill dams (CFRDs). The analysis identified the three most significant factors to examine their impacts on the stress-deformation characteristics of CFRDs. The results show that the order of influence on the dam body’s stress and deformation characteristics is as follows: dam height > bank slope gradient > water storage times > panel phased construction. From the perspective of stress-deformation of the face slab, water storage times predominantly affect tensile stress, while the bank slope gradient exerts the greatest influence on compressive stress. As the bank slope gradient decreases, the panel’s lateral restraint diminishes, leading to a decrease in the panel’s extrusion efficacy. Consequently, there are notable variations in the panel’s compressive stresses. An increase in dam height correlates with escalating stress and deformation in both the dam and face slab. As the bank slope gradient decreases, the deformation of the dam and face slab, as well as the range of tensile stress of the face slab, also increase. In contrast to a single water storage scenario, the face slab has experienced greater stress and deformation during the initial impoundment under multiple impoundment conditions. Therefore, multiple water storage schemes result in reduced deflection, axial horizontal displacement, and tensile stresses both along the slope and axial in the face slab. Furthermore, the tensile area at the bottom of the face slab transitions into a compressive area.https://www.mdpi.com/2076-3417/14/18/8268concrete-faced rockfill damstress-deformation analysisinfluence factorsensitivity analysisfinite element |
| spellingShingle | Hongmei Li Jianxin Wang Yanyuan Lv Chengming Feng Study on the Effects of Influence Factors on the Stress and Deformation Characteristics of Ultra-High CFRDs Applied Sciences concrete-faced rockfill dam stress-deformation analysis influence factor sensitivity analysis finite element |
| title | Study on the Effects of Influence Factors on the Stress and Deformation Characteristics of Ultra-High CFRDs |
| title_full | Study on the Effects of Influence Factors on the Stress and Deformation Characteristics of Ultra-High CFRDs |
| title_fullStr | Study on the Effects of Influence Factors on the Stress and Deformation Characteristics of Ultra-High CFRDs |
| title_full_unstemmed | Study on the Effects of Influence Factors on the Stress and Deformation Characteristics of Ultra-High CFRDs |
| title_short | Study on the Effects of Influence Factors on the Stress and Deformation Characteristics of Ultra-High CFRDs |
| title_sort | study on the effects of influence factors on the stress and deformation characteristics of ultra high cfrds |
| topic | concrete-faced rockfill dam stress-deformation analysis influence factor sensitivity analysis finite element |
| url | https://www.mdpi.com/2076-3417/14/18/8268 |
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