This study tackles key technical challenges in constructing metro stations with a shield-shallow tunneling hybrid approach, the forces, deformations, and failure mechanisms at the interface between open-ring segment linings and the primary station structure are examined using numerical simulations. Three joint types (I, II, III) were designed, and concrete strain, rebar stress, bolt strain and joint deformation were analyzed. Results show that: Joint type II (with embedded rebar couplers) performed best in deformation control and waterproofing, achieving a safety factor of 8, surpassing bolt-connected joint (types I and III). This research offers crucial insights for metro station joint design, recommending embedded rebar couplers to enhance overall structural stability and durability.
Zhang Xinjin
,
Wang Bingrui
. Reliability Test of Subway Station Joint with Shield Enlargement Method[J]. Chinese Journal of Underground Space and Engineering, 2025
, 21(S2)
: 724
-734
.
DOI: 10.20174/j.JUSE.2025.S2.23
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