A Case Study for Selecting a Proper Protection Method in Rapid Transit Underground Construction

Abstract

Since the metropolitan rapid transit construction is mainly shield tunneling and deep excavation, it is important to select proper interruptive protection method to prevent the impact of its construction on the existing structures and vice versa. This research first determines the criteria and sub-criteria to be used in the initial assessment framework for the protection of the existing structures and tunneling excavation, and then it establishes the final assessing framework by using Delphi method. Furthermore, the Analytic Hierarchical Process is used to determine the relative weights of elements of each level in the hierarchical structure of assessment framework. Thereafter, an interruptive protection method scoring table can be established. Finally, the selection process is presented by using a study case.