Parametric study of excavation induced ground movements

This paper presents a parametric study for the ground and wall movements due to deep excavations. Analysis is carried out using the finite element method, which has the ability to simulate construction sequences and various lateral earth retaining systems accurately. The constitutive behaviour of soil is modelled within the critical state framework. The work presented in this paper concentrates on long excavations and hence a plane strain model is adopted for the finite element analysis. A parametric study is carried out to develop design charts to establish variation patterns among number of influence factors such as geometry of the excavation, soil properties, structural system variables etc. Finally the results obtained were compared with existing design charts and methods