ABSTRACT
Shield, as a common method of tunnel construction that has made great improvement, still causes strata displacement and ground subsidence (L.H. Zeng. 2010). The Hefei Metro Line1 project is located in an area that is crowded with buildings, and most of the buildings are in the form of pile foundation. Sometimes the shield tunnel will drive through adjacent to the pile foundations, the shield construction will certainly affect the internal force and deformation of the pile foundations, and a certain degree of loss will happen to the stability and safety of the upper structure (M.W. Li. 2011). Therefore, in order to protect the upper structure and to ensure the smooth tunnel construction, this study aims to unveil the effects of tunneling on adjacent pile foundations, which will lead to acknowledgement of the serious practical significance of this constructing method.
