Deformation monitoring and numerical simulation of retaining structure in subway station deep foundation pit

作者：Jin Wei Li^*; Xuan Li; Meng xin Xiong; Hao Fang Luo

来源：Electronic Journal of Geotechnical Engineering, 2016, 21(6): 2331-2340.

• Deep foundation pit
• Deformation Characteristics
• Deformation monitoring
• Lateral deformation
• Monitoring results
• On-site monitoring
• Retaining structure
• Subway constructions

The subway deep foundation pit deformation is the biggest security hidden danger in subway construction. According to the complication of retaining structure deformation in deep foundation pit. This paper relying on the deep foundation pit of Wangjiadun Nord station, designed the retaining structure and the deformation monitoring program of foundation pit, and analysed the deformation characteristics of the retaining structure around deep foundation pit by means of the on-site monitoring, theoretical analysis and numerical simulation, then compared the monitoring result of deformation with the result of numerical simulation. The project analysis shows that the retaining structure of steel support + ground wall satisfies the strength and deformation requirements of deep foundation engineering, which limits the lateral deformation of soil around excavation, and the numerical simulation results are more consistent with the monitoring results. The result has a guiding value to safely construction.

• 出版日期2016