The Law of Building Foundation Deformation Induced by Shield Construction in a Loess Area and the Relevant Control Techniques
(1 Xi'an Metro Co., Ltd, Xi'an 710018；2 China Railway 15th Bureau Group Co., Ltd, Luoyang 471013；
3 Xi'an University of Science and Technology, Xi'an 710054)
Abstract：
Taking the construction of the Dayanta--Beichitou shield-driven tunnel on the Xi'an Metro Line 3 as an example and using the FLAC3D software, this paper studies the laws of building foundation deformation induced by shield construction in a loess area under two working conditions, provides relevant countermeasures for controlling the deformation of the Shanxi Zhenghe Hospital building and gives the monitoring scheme as well. The results show that: the soil layer around the hospital building shall be firstly reinforced by grouting to ensure that the foundation deformation keeps in the allowable value range. Practically, using appropriate excavation parameters and ground reinforcements, the shield underpasses the building safely with an allowable foundation settlement, thus proving that the above control techniques are sound and effective.
CAO Zhen-1,
YANG Feng-2,
3 etc
.The Law of Building Foundation Deformation Induced by Shield Construction in a Loess Area and the Relevant Control Techniques [J] MODERN TUNNELLING TECHNOLOGY, 2014,V51(4): 102-107
2014, Vol. 51 