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Settlement Characteristics and Control Parameters for the Integrated Construction of Large-Section Underground Structures and Airport Terminals: A Case Study

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Vydáno v:Buildings vol. 15, no. 17 (2025), p. 3139-3159
Hlavní autor: Zhang Rongzhen
Další autoři: Liu, Wei, Wei Zekun, Han, Jianyong, Shao Guangbiao, Li Shenao
Vydáno:
MDPI AG
Témata:
Beijing China
Yellow River
China
Standards
Investigations
Underground structures
Airport expansion
Railway engineering
Rotation
Airport terminals
High speed rail
Statistical analysis
Field investigations
Project engineering
Differential settlement
Tunnel construction
Computer simulation
Transportation terminals
Construction industry
Simulation
Construction
Field tests
Structural integrity
Deformation
Reinforced concrete
Shear strength
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Abstrakt:Settlement control for tunnel–terminal co-construction projects remains undefined, despite the growing trend of integrating multiple transportation modes within large-scale transport hubs. This study investigates a large underground structure passing beneath an airport terminal, combining field investigations, statistical analyses, and finite element simulations to examine differential settlement behavior under non-uniform loading conditions. The key contribution of this work is the proposal of a differential settlement control standard, defined by the tangent of the rotation angle between adjacent column foundations, with a recommended value of 1/625. Case analysis at cross-section E–E shows that the measured maximum tangent rotation angle was 1/839, corresponding to base slab settlements of 40.5 mm and 33.1 mm for the high-speed railway and metro structures, respectively. Application of the proposed 1/625 criterion yields allowable maximum base slab settlements of 55.28 mm for the high-speed railway and 44.83 mm for the metro, with differential settlement limits of 7.5 mm and 3.13 mm. Numerical simulations confirm the validity of this standard, ensuring the structural integrity of co-constructed systems and providing practical guidance for future airport terminal–tunnel integration projects.
ISSN:2075-5309
DOI:10.3390/buildings15173139
Zdroj:Engineering Database