Finite And Boundary Element (FAB) Method: Theory & Application

Several methods for analysis of the effect of tunnelling-induced ground movements on pile foundations are available in the literature. The methods range from empirical, two-dimensional (plane strain), semi-analytical to purely three-dimensional analysis. A recent addition in the literature is the combined 3-D FE and Boundary Element (FAB) numerical method proposed by Surjadinata et al. (2004). This paper briefly describes this method and illustrates the degree of accuracy of the FAB method. Furthermore, the recent experience of using the FAB method for a tunnelling project in Melbourne is discussed. This discussion demonstrates the efficient and practical use of the FAB method for examining the impact of tunnelling on pile foundations.