Mechanical Behavior of Single and Group Piles with a Low Cap Adjacent to Shield Tunneling in Composite Ground: Insights from Centrifugal Model Testing

• Published in: Geotechnical and geological engineering Vol. 42; no. 8; pp. 7451 - 7480
• Main Authors: Wu, Tianhua, Gao, Yongtao, Huang, Changfu, Zhou, Yu, Li, Jianwang
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.11.2024; Springer Nature B.V
• Subjects: Axial forces; Bending moments; Centrifugation; Centrifuging; Civil Engineering; Deformation; Digital imaging; Earth and Environmental Science; Earth pressure; Earth Sciences; Engineering; Flight; Flight conditions; Geotechnical Engineering & Applied Earth Sciences; Grouting; Hydrogeology; Hydrostatic pressure; Load; Load transfer; Mechanical properties; Model testing; Original Paper; Pile groups; Piles; Pore pressure; Pore water; Pore water pressure; Scale models; Sensitivity analysis; Soil analysis; Soil-pile interaction; Subway construction; Subway tunnels; Terrestrial Pollution; Three dimensional composites; Tunnel construction; Tunneling; Tunneling shields; Tunnels; Waste Management/Waste Technology; Water pressure; Tunneling; Single pile; Centrifugal experiment; Pile group; Soil-pile interaction; DIC technology

Shield tunneling adjacent to existing piles is common occurrence in subway construction. This study proposes a novel tunnel model capable of simultaneously simulating ground loss, unloading effects, and void grouting under in-flight conditions. Several three-dimensional (3D) centrifugal scale model...