Analysis on the influence of shield construction to pile group of hefei high-speed rail south station

Donglin Wang, Yusheng Jia

COMPUTER MODELLING & NEW TECHNOLOGIES 2013 17(5D) 31-35

School of Civil Engineering, Anhui Jianzhu University, Hefei, Anhui, 230601, China

Since the tunnel shield construction produces the disturbance to the surrounding soil, causes the force impact of the near pile foundation, and leads to the additional stress and strain of the pile foundation. This paper uses the station pile group of Hefei No.1 Subway Line adjacent to the Hefei High-speed Rail South Station as the engineering example, utilizes the large finite element calculation software MIDAS GTSNX to establish the three-dimensional calculation model, so as to make dynamic simulation of shield tunnel construction and conduct the analysis on the influence of displacement and stress of pile foundation during the shield construction process. Then make comparative analysis on the data of measured ground subsidence deformation on the site, the results show that this simulation analysis objectively reflects the influence law of pile foundation and ground subsidence deformation, which can provide the theoretical basis for the safe and quick construction of the similar engineering.