Construction Technique of Pile-Board Subgrade Crossing Over-Shallow-Embedded Metro in Deep Soft Ground

Abstract:

Subway shield lining segments are highly sensitive to peripheral soil disturbance. Shield displacement may destroy the whole structure which can not be repaired, and directly affects the subway operation safety at the worst. Therefore, it is necessary to reasonably determine the construction technology, in order to avoid the unfavorable influences caused by construction disturbance. According to the pile-board subgrade scheme which is adopted by the comparison of schemes, also considering the high risk of over-shallow-embedded metro construction, we put forward the key construction technique of pile-board subgrade, including: technique of casing tube bored pile, construction process of pile-board structure and monitoring of settlement and deformation which are important to guide the similar projects.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 388-392
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.388
• Online since: July 2011
• Authors: Qian Su, Hao Bai, Long Biao Liang, Xing Li
• Keywords: Construction Process of Pile-Board Structure, Deep Soft Ground, Monitoring of Settlement and Deformation, Over-Shallow-Embedded Metro, Technique of Casing Tube Bored Pile

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