Research on the Optimal Design of Retaining Piles of a Wide Metro Tunnel Foundation Pit Based on Deformation Control

Engineers pay more and more attention to the economic benefits of foundation pit engineering. At present, the optimal design of the foundation pit supporting structure mainly focuses on strength and functional design, and there is no mature theoretical design method for deformation control. In this...

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Bibliographic Details
Published in:Buildings (Basel) 2024-07, Vol.14 (7), p.1906
Main Authors: Zhong, Wancai, Wan, Qiwei, Nie, Nan, Ding, Haibin, Gao, Feng, Xu, Changjie
Format: Article
Language:English
Subjects:
Algorithms
Artificial intelligence
Construction
Deformation
deformation calculation
Deformation effects
Design
Design optimization
Efficiency
Energy
Engineering
Finite element method
foundation pit retaining structure
Foundations
Machine learning
Mathematical models
Optimization techniques
Potential energy
principle of minimum potential energy
structure optimization
Subway stations
Subway tunnels
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Summary:Engineers pay more and more attention to the economic benefits of foundation pit engineering. At present, the optimal design of the foundation pit supporting structure mainly focuses on strength and functional design, and there is no mature theoretical design method for deformation control. In this paper, a method for calculating the overall deformation of a foundation pit supporting structure based on the principle of minimum potential energy is proposed. Based on this method, the optimal design of the foundation pit of Guangzhou Baiyun District Comprehensive Transportation Hub Metro Station is realized. The deformation calculation results and optimization design scheme are validated by finite element numerical simulation and field monitoring data. The results show that the proposed theoretical algorithm predicts the pile deformation curves better than the finite element method, suggesting the proposed theoretical method is reasonable and the optimization scheme of the retaining pile is feasible. In the optimized design, the deformation of the foundation pit retaining pile is controlled by its push-back effect. The proposed deformation calculation method can realize the overall deformation calculation of the foundation pit supporting structure.
ISSN:2075-5309
2075-5309
DOI:10.3390/buildings14071906