Analysis and Optimization of Soil Nail Parameters in a Deep Foundation Pit of Silty Clay Based on Response Surface Methodology
The aim of this research is to reveal the influence of spatial form parameters and other factors in soil nail design on the three-dimensional stability of deep foundation pits in silty clay. A deep foundation pit in a silty clay area in Hebei was taken as the engineering background. Based on the res...
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Editorial Office of Journal of Changjiang River Scientific Research Institute
2025-04-01
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| Series: | 长江科学院院报 |
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| Online Access: | http://ckyyb.crsri.cn/fileup/1001-5485/PDF/1001-5485(2025)04-0142-07.pdf |
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| author | FAN Cheng, WANG Zi-yuan, QI Peng-fei, ZHANG Hong-bin, ZHANG Tiao-tiao |
| author_facet | FAN Cheng, WANG Zi-yuan, QI Peng-fei, ZHANG Hong-bin, ZHANG Tiao-tiao |
| author_sort | FAN Cheng, WANG Zi-yuan, QI Peng-fei, ZHANG Hong-bin, ZHANG Tiao-tiao |
| collection | DOAJ |
| description | The aim of this research is to reveal the influence of spatial form parameters and other factors in soil nail design on the three-dimensional stability of deep foundation pits in silty clay. A deep foundation pit in a silty clay area in Hebei was taken as the engineering background. Based on the response surface method, Plackett-Burman and Box-Behnken experiments were designed. MIDAS-GTS and Design-Expert were used to establish experimental models. The influence of various parameters on the safety of soil nail support in deep foundation pits of silty clay and the applicability of optimization schemes were analyzed through numerical simulation and monitoring data. Results show that the impact of each parameter on the safety of the pit in the silty clay area, in descending order of significance, is as follows: soil nail length, slope angle of excavation, soil nail spacing, soil nail inclination, and soil nail diameter. In the combined effect of support parameters, the soil nail length and spacing have the greatest impact on the safety factor. The predictive model established by the response surface method can provide the best optimization scheme. The optimization scheme shifts the soil slip surface backward, reducing the maximum horizontal displacement of the foundation pit from 9.33 mm to 5.42 mm and the maximum vertical settlement from 16.9 mm to 11.8 mm, providing a reference for the design of soil nail support for this type of foundation pit. |
| format | Article |
| id | doaj-art-8ba3fdffd2994c0aa5ebbb3012c60e89 |
| institution | DOAJ |
| issn | 1001-5485 |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | Editorial Office of Journal of Changjiang River Scientific Research Institute |
| record_format | Article |
| series | 长江科学院院报 |
| spelling | doaj-art-8ba3fdffd2994c0aa5ebbb3012c60e892025-08-20T03:10:49ZzhoEditorial Office of Journal of Changjiang River Scientific Research Institute长江科学院院报1001-54852025-04-0142414214810.11988/ckyyb.20231429Analysis and Optimization of Soil Nail Parameters in a Deep Foundation Pit of Silty Clay Based on Response Surface MethodologyFAN Cheng, WANG Zi-yuan, QI Peng-fei, ZHANG Hong-bin, ZHANG Tiao-tiao01 Research Center for Geotechnical and Structural Engineering Technology of Liaoning Province, Dalian University, Dalian 116622, China;2 Institute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaThe aim of this research is to reveal the influence of spatial form parameters and other factors in soil nail design on the three-dimensional stability of deep foundation pits in silty clay. A deep foundation pit in a silty clay area in Hebei was taken as the engineering background. Based on the response surface method, Plackett-Burman and Box-Behnken experiments were designed. MIDAS-GTS and Design-Expert were used to establish experimental models. The influence of various parameters on the safety of soil nail support in deep foundation pits of silty clay and the applicability of optimization schemes were analyzed through numerical simulation and monitoring data. Results show that the impact of each parameter on the safety of the pit in the silty clay area, in descending order of significance, is as follows: soil nail length, slope angle of excavation, soil nail spacing, soil nail inclination, and soil nail diameter. In the combined effect of support parameters, the soil nail length and spacing have the greatest impact on the safety factor. The predictive model established by the response surface method can provide the best optimization scheme. The optimization scheme shifts the soil slip surface backward, reducing the maximum horizontal displacement of the foundation pit from 9.33 mm to 5.42 mm and the maximum vertical settlement from 16.9 mm to 11.8 mm, providing a reference for the design of soil nail support for this type of foundation pit.http://ckyyb.crsri.cn/fileup/1001-5485/PDF/1001-5485(2025)04-0142-07.pdffoundation pit|soil nail support|response surface methodology|midas-gts|optimization design |
| spellingShingle | FAN Cheng, WANG Zi-yuan, QI Peng-fei, ZHANG Hong-bin, ZHANG Tiao-tiao Analysis and Optimization of Soil Nail Parameters in a Deep Foundation Pit of Silty Clay Based on Response Surface Methodology 长江科学院院报 foundation pit|soil nail support|response surface methodology|midas-gts|optimization design |
| title | Analysis and Optimization of Soil Nail Parameters in a Deep Foundation Pit of Silty Clay Based on Response Surface Methodology |
| title_full | Analysis and Optimization of Soil Nail Parameters in a Deep Foundation Pit of Silty Clay Based on Response Surface Methodology |
| title_fullStr | Analysis and Optimization of Soil Nail Parameters in a Deep Foundation Pit of Silty Clay Based on Response Surface Methodology |
| title_full_unstemmed | Analysis and Optimization of Soil Nail Parameters in a Deep Foundation Pit of Silty Clay Based on Response Surface Methodology |
| title_short | Analysis and Optimization of Soil Nail Parameters in a Deep Foundation Pit of Silty Clay Based on Response Surface Methodology |
| title_sort | analysis and optimization of soil nail parameters in a deep foundation pit of silty clay based on response surface methodology |
| topic | foundation pit|soil nail support|response surface methodology|midas-gts|optimization design |
| url | http://ckyyb.crsri.cn/fileup/1001-5485/PDF/1001-5485(2025)04-0142-07.pdf |
| work_keys_str_mv | AT fanchengwangziyuanqipengfeizhanghongbinzhangtiaotiao analysisandoptimizationofsoilnailparametersinadeepfoundationpitofsiltyclaybasedonresponsesurfacemethodology |