Numerical Study on the Coupling Effect on a Retaining Structure of a Complex Deep Foundation Pit Group Excavation in a Soft-Soil Area
Source abstract
Abstract
Based on the complex deep foundation pit group process of the Huimin Avenue Comprehensive Reconstruction Project in Nanjing, the finite element numerical simulation method is used to analyze the deformation characteristics of the retaining structure and the coupling effect between foundation pits during the whole process of excavation and support construction of the complex foundation pit group. Meanwhile, the differences in the deformation characteristics and coupling effects of the retaining structure under different construction time sequence schemes of the foundation pit group are studied. Finally, some suggestions are put forward for the monitoring and construction in this project, which provides a reference case for the design and construction of similar foundation pit groups.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Geotechnical Engineering and Analysis · Civil and Geotechnical Engineering Research · Geotechnical Engineering and Soil Stabilization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Nanjing Urban Construction Tunnel and Bridge Wisdom Management Co., Ltd., Nanjing 210017, China
School of Transportation, Southeast University, Nanjing 210096, China
Institute of Geotechnical Engineering (Institute of Future Underground Space), Nanjing 210096, China
Southwest Municipal Engineering Design & Research Institute of China Co., Ltd., Chengdu 610225, China
Funding
National Natural Science Foundation of China
References (23)
Show source-provided references
1. Assessment of strut forces for braced excavation in clays from numerical analysis and field measurements10.1016/j.compgeo.2017.01.012 ↗
2. Structural Responses of Existing Metro Stations to Adjacent Deep Excavations in Suzhou, China10.1061/(ASCE)CF.1943-5509.0000845 ↗
3. Numerical Simulation of Deep Foundation Pit Construction under Complex Site Conditions10.1155/2021/6669466 ↗
4. Investigation of geometric effects on three-dimensional tunnel deformation mechanisms due to basement excavation10.1016/j.compgeo.2018.10.019 ↗
5. Analysis on Deformation and Stress Characteristics of a Multibraced Pit-in-Pit Excavation in a Subway Transfer Station10.1155/2020/8844461 ↗
6. An efficient inverse analysis procedure for braced excavations considering three-dimensional effects10.1016/j.compgeo.2018.12.004 ↗
7. Chen, S., Cui, J., and Liang, F. (2022). Case Study on the Deformation Coupling Effect of a Deep Foundation Pit Group in a Coastal Soft Soil Area. Appl. Sci., 12.10.3390/app12126205 ↗
8. Consideration on Group Excavation Engineering
9. Zoned and staged construction of an underground complex in Shanghai soft clay10.1016/j.tust.2017.04.016 ↗
10. Wall and Ground Movements due to Deep Excavations in Shanghai Soft Soils10.1061/(ASCE)GT.1943-5606.0000299 ↗
11. Yang, Z., Chen, Y., Yan, C., and Azzam, R. (2022). Numerical Evaluation of Isolation Walls in Modifying Excavation-Induced Dis-placement Field. Arab. J. Sci. Eng.10.1007/s13369-022-06889-0 ↗
12. Failure Investigation at a Collapsed Deep Excavation in Very Sensitive Organic Soft Clay10.1061/(ASCE)CF.1943-5509.0000557 ↗
13. Three-Dimensional Responses Observed in an Internally Braced Excavation in Soft Clay10.1061/(ASCE)1090-0241(2007)133:11(1364) ↗
14. Performance of a top-down excavation in shanghai: Case study and numerical ex-ploration10.1080/19648189.2021.2013950 ↗
15. Calculation of foundation pit deformation caused by deep excavation considering influence of loading and unloading10.1007/s11771-017-3625-3 ↗
16. Characterization of semi-top-down excavation for subway station in Shanghai soft ground10.1016/j.tust.2017.05.028 ↗
17. Numerical study on lateral wall displacement of deep excavation supported by IPS earth retention system10.1016/j.undsp.2017.09.001 ↗
18. Comparative investigation on deformation monitoring and numerical simulation of the deepest excavation in Beijing10.1007/s10064-020-02019-y ↗
19. Deformation of deep and large foundation pit in soft soil of Fuzhou Subway10.1007/s12517-019-4918-7 ↗
20. Estimation of Ground Movement and Wall Deflection in Braced Excavation by Minimum Potential Energy Approach
21. Numerical simulation of deep foundation pit dewatering and optimization of controlling land subsidence10.1016/j.enggeo.2010.05.002 ↗
22. Finite element study of deep excavation construction processes10.1016/j.sandf.2017.08.024 ↗
23. Numerical modelling of effects of different multipropped excavation depths on adjacent single piles: Comparison between floating and end-bearing pile responses10.1080/19648189.2019.1638312 ↗