Seismic Design Method for Shield Tunnels in Ground Conditions Subject to Change in the Longitudinal Direction

• Published in: Quarterly Report of RTRI Vol. 64; no. 1; pp. 27 - 32
• Main Authors: TSUNO, Kiwamu, FUJITA, Kiichi, FUNAKOSHI, Koji
• Format: Journal Article
• Language: English
• Published: Tokyo Railway Technical Research Institute 01.02.2023; Japan Science and Technology Agency
• Subjects: Axial forces; Bending moments; Inclination angle; longitudinal direction; performance-based design method; Seismic design; Shear forces; shield tunnel; Stiffness; Tunneling shields

The authors of this paper investigated the effect of seismic motion on shield tunnels that are located in areas with varying ground conditions. This research revealed that the larger the inclination angle of a boundary between a basic layer and a soft layer becomes, the larger the sectional forces,...