Construction Technique of Pile-Board Subgrade Crossing Over-Shallow-Embedded Metro in Deep Soft Ground
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.
Dongye Sun, Wen-Pei Sung and Ran Chen
Q. Su et al., "Construction Technique of Pile-Board Subgrade Crossing Over-Shallow-Embedded Metro in Deep Soft Ground", Applied Mechanics and Materials, Vols. 71-78, pp. 388-392, 2011