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List of products by author: Y. Bai
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A Review of Foundation Treatment in Immersed Tube Tunnels in Mainland China
Abstract: Foundation treatment in immersed tube tunnels aims to reduce the problem of uneven foundation trench caused by excavation. It is also used to strength soft soil in the ground. Therefore, stability and settlement of the tunnel are closely related to foundation treatment methods and construction techniques. This paper presents all immersed tube tunnels in mainland China and their foundation...
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A Study on the Mechanical Behavior of Pipe Curtain with New Interlock Joint in a Large Pipe Curtain-Box Jacking Project
Abstract: The development of underground space in urban area has been challenging in recent years, especially where there are underpass crossing roads with heavy traffic and where they are highly protected for environmental reasons. The pipe curtain-box jacking method has been applied in several such projects, because it causes minimal disturbance. However, experience gained from large section pipe...
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Application of GPR in thixotropic slurry jacket assessment for pipe jacking
Abstract: In this paper, ground penetrating radar (GPR), as a significant geophysical technique, is firstly applied to a sewage tunnel constructed by pipe jacking method in Shanghai to obtain the thickness distribution of thixotropic slurry around the pipe. The results indicate that integrated slurry jacket can be formed in the longitudinal direction though unevenly and the thickness of slurry jacket is...
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Brief introduction of the first quasi rectangular shield tunnel in China
Abstract: The form of shield tunnel cross sections has gone through several phases, from rectangular to circular, and then to non-circular. To study the key design and construction techniques of quasi rectangular shield tunnels, Chinese engineers have chosen to build the world’s first quasi rectangular shied tunnel in the construction of one interval of Ningbo Metro Line 3, taking into consideration both...
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Mechanical behaviour of quasi-rectangular segmental tunnel lining
Abstract: The quasi-rectangular segmental tunnel lining is a new alternative for shield driven tunnels in urban railway transportation. It is firstly designed and employed in Metro Line 3 in Ningbo, China for its applicability in high density urban areas. The bearing capacity of this new structure is of great importance during its utilization period, as it is related to the safety reserve. In this study,...
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Numerical Simulation Analysis on Piston Effect Induced by a Running Train in Subway Station
Abstract: Effective utilization of the piston wind induced by metro trains is a meaningful research point. A numerical methodology to simulate a train entering and leaving the subway station by using dynamic grid technique was proposed. The longitudinal distribution of piston wind in the tunnel space inside the station, the variation for the piston wind volume with train’s running states and the...
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The Application of Movable Support System in Deep Foundation Pit
Abstract: Using the 6th Bid Project of Metro Line 16 as the background, the article introduces the movable support system used in foundation pit excavation. The main difference between this new technique and traditional ones is that support members are set up rapidly and stably through specific preset tracks. A movable support system manages to speed up the construction progress, therefore, shortens the...
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