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<p>Rapid population growth and increasing traffic congestion drive the need for more efficient transportation systems, often involving tunnelling in highly urbanized areas. Understanding the effects of tunnelling on existing structures is vital to prevent structural damage and ensure occupant safety. This study thoroughly investigates the impact of tunnelling-induced differential settlements on reinforced concrete (RC) frame structures, focusing on structural integrity and load redistribution. The research utilizes advanced nonlinear modelling techniques in the PLAXIS 3D software to capture the intricate soil-structure interactions while examining various structural geometries, including superstructure height, bay width, and number of bays, alongside soil conditions and tunnel proximities. After evaluating load redistribution and deformation within the structure due to tunnelling activity, further analysis is conducted in ABAQUS to understand the impacts on RC frames while considering material nonlinearity. The paper clarifies the role of structural configuration on the soil-structure interactions during tunnelling projects. It also provides insights into the behaviour of these structures under tunnelling-induced stresses, offering valuable guidelines for safe construction in urban environments.</p>

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Structural Response of Reinforced Concrete Frame Structures Subjected to Tunnelling Induced Differential Foundation Settlements

  • 期刊论文

  • 发表日期：

    2026年3月3日

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  • Abdelmoneim El Naggar,
  • Maged A. Youssef,
  • Hany El Naggar

摘要

Rapid population growth and increasing traffic congestion drive the need for more efficient transportation systems, often involving tunnelling in highly urbanized areas. Understanding the effects of tunnelling on existing structures is vital to prevent structural damage and ensure occupant safety. This study thoroughly investigates the impact of tunnelling-induced differential settlements on reinforced concrete (RC) frame structures, focusing on structural integrity and load redistribution. The research utilizes advanced nonlinear modelling techniques in the PLAXIS 3D software to capture the intricate soil-structure interactions while examining various structural geometries, including superstructure height, bay width, and number of bays, alongside soil conditions and tunnel proximities. After evaluating load redistribution and deformation within the structure due to tunnelling activity, further analysis is conducted in ABAQUS to understand the impacts on RC frames while considering material nonlinearity. The paper clarifies the role of structural configuration on the soil-structure interactions during tunnelling projects. It also provides insights into the behaviour of these structures under tunnelling-induced stresses, offering valuable guidelines for safe construction in urban environments.