Sidewall Roughness Measurement and Bearing Performance Simulation of Rock-Socketed Piles Based on Laser Scanning Point Cloud
Rock-socketed piles are commonly used in pile foundations for large buildings because of their excellent load-bearing characteristics. The roughness of the pile–rock interface affects the load transfer and the ultimate side resistance of the pile. In this work, a laser radar system is developed to m...
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MDPI AG
2025-01-01
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| author | Junbao Zhang Yule Hu Yiteng Wang Di Zhang |
| author_facet | Junbao Zhang Yule Hu Yiteng Wang Di Zhang |
| author_sort | Junbao Zhang |
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| description | Rock-socketed piles are commonly used in pile foundations for large buildings because of their excellent load-bearing characteristics. The roughness of the pile–rock interface affects the load transfer and the ultimate side resistance of the pile. In this work, a laser radar system is developed to measure the surface roughness of a dry bored pile and the shape of the borehole, and a three-dimensional model of the borehole is reconstructed based on the laser point cloud. The 3D surface model was used to extract the vertical contour lines in different directions and thus calculate the roughness of the pile. A numerical simulation of the real measured 3D model using FLAC3D is presented. A borehole of a real rock-socketed pile was measured and simulated. The results show that, although the working load is carried by both the side and base resistances, the former plays a major role. The slow-varying load-settlement curve indicates that the pile has a superior load–bearing capacity, and the maximum allowable settlement should be considered in the application. The simulations, using the actual piles tested, produced a more realistic load response and were able to predict the load-bearing performance of the piles more accurately. Furthermore, this approach offers a reference for the design of rock-socketed piles. |
| format | Article |
| id | doaj-art-7b724f9e9df944488b8abf9a08fdcddb |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-7b724f9e9df944488b8abf9a08fdcddb2025-01-24T13:21:13ZengMDPI AGApplied Sciences2076-34172025-01-0115288910.3390/app15020889Sidewall Roughness Measurement and Bearing Performance Simulation of Rock-Socketed Piles Based on Laser Scanning Point CloudJunbao Zhang0Yule Hu1Yiteng Wang2Di Zhang3The School of Future Technology, China University of Geosciences, Wuhan 430074, ChinaThe School of Future Technology, China University of Geosciences, Wuhan 430074, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaThe School of Future Technology, China University of Geosciences, Wuhan 430074, ChinaRock-socketed piles are commonly used in pile foundations for large buildings because of their excellent load-bearing characteristics. The roughness of the pile–rock interface affects the load transfer and the ultimate side resistance of the pile. In this work, a laser radar system is developed to measure the surface roughness of a dry bored pile and the shape of the borehole, and a three-dimensional model of the borehole is reconstructed based on the laser point cloud. The 3D surface model was used to extract the vertical contour lines in different directions and thus calculate the roughness of the pile. A numerical simulation of the real measured 3D model using FLAC3D is presented. A borehole of a real rock-socketed pile was measured and simulated. The results show that, although the working load is carried by both the side and base resistances, the former plays a major role. The slow-varying load-settlement curve indicates that the pile has a superior load–bearing capacity, and the maximum allowable settlement should be considered in the application. The simulations, using the actual piles tested, produced a more realistic load response and were able to predict the load-bearing performance of the piles more accurately. Furthermore, this approach offers a reference for the design of rock-socketed piles.https://www.mdpi.com/2076-3417/15/2/889rock-socketed pilesidewall roughnessbearing characteristic3D numerical modelingside resistance |
| spellingShingle | Junbao Zhang Yule Hu Yiteng Wang Di Zhang Sidewall Roughness Measurement and Bearing Performance Simulation of Rock-Socketed Piles Based on Laser Scanning Point Cloud Applied Sciences rock-socketed pile sidewall roughness bearing characteristic 3D numerical modeling side resistance |
| title | Sidewall Roughness Measurement and Bearing Performance Simulation of Rock-Socketed Piles Based on Laser Scanning Point Cloud |
| title_full | Sidewall Roughness Measurement and Bearing Performance Simulation of Rock-Socketed Piles Based on Laser Scanning Point Cloud |
| title_fullStr | Sidewall Roughness Measurement and Bearing Performance Simulation of Rock-Socketed Piles Based on Laser Scanning Point Cloud |
| title_full_unstemmed | Sidewall Roughness Measurement and Bearing Performance Simulation of Rock-Socketed Piles Based on Laser Scanning Point Cloud |
| title_short | Sidewall Roughness Measurement and Bearing Performance Simulation of Rock-Socketed Piles Based on Laser Scanning Point Cloud |
| title_sort | sidewall roughness measurement and bearing performance simulation of rock socketed piles based on laser scanning point cloud |
| topic | rock-socketed pile sidewall roughness bearing characteristic 3D numerical modeling side resistance |
| url | https://www.mdpi.com/2076-3417/15/2/889 |
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