During the excavation process of shield tunneling, it is inevitable that surrounding soil mass disturbed, which will affect adjacent structures. This paper proposes a general framework for impact tunneling construction on existing tunnels. First, partition regarding tunnels and buildings established by three-dimensional numerical analysis method. Then, displacement predicted using fuzzy gray th...

The interaction influence on subway tunnels adjacent to foundation excavation was produced by excavation construction, and it is great significance for the correct assessment of its size and influence on the safety of subway operation. Based on the foundation excavation project, some typical foundation excavation profiles are selected, the calculation and analysis on additional settlement and h...

The expansion of underground structures is important in urban areas with high population density. In most large cities in the world, urban development is spreading along the structures. These structures are generally located at shallow depth; therefore study of shallow tunnels in urban areas is critical for development. During the excavation of tunnels in urban areas, creating the asymmetric se...

The excavation of a foundation pit will break the original stress balance and affect surface settlement natural adjacent buildings, so deformation control is very important. In this paper, numerical simulation results additional caused by were compared with experimental to verify accuracy model obtain reliable ratio building width average particle size sand that was not affected effect. Then, d...

This paper proposes a new method for predicting the displacement and internal force of constructed tunnels induced by adjacent excavation with dewatering. In this method, total excavation-induced additional stress on tunnel is derived superposing stresses unloading dewatering effects. The effect calculated using Mindlin’s solution. principle effective Dupuit precipitation funnel curve. With bea...

The design and construction of shallow-buried tunnels in densely populated urban areas involve many challenges. The ground movements induced by tunneling effects pose potential risks to infrastructure such as surface buildings, pipelines, and roads. In this paper, a case study of the Zhongjie subway station located in Shenyang, China, is examined to investigate the key construction techniques a...