Method of Calculating Adjacent Structures' Settlement by Shield Tunneling through Use of Settlement Surface

Abstract

A practicable method of calculating adjacent structures' settlement by shield tunneling is proposed. First of all, the settlement curve of a transverse direction is obtained by two-dimensional FEM analysis, and the settlement curve of longitudinal direction measured by shield tunneling of similar construction is set. Then a settlement surface is calculated from these two settlement curves. Even if the tunnel route is a curve or the interval between the adjacent structures and the tunnel route changes, we can obtain the adjacent structures' settlement by moving the calculated settlement surface along the tunnel route.