WANG Ting, LUO Fu-rong, LIU Wei-ning, et al. Influence of metro station construction by drift-pile-beam-arch method on soil and rigid-joint pipeline[J]. 2011, 32(8).
WANG Ting, LUO Fu-rong, LIU Wei-ning, et al. Influence of metro station construction by drift-pile-beam-arch method on soil and rigid-joint pipeline[J]. 2011, 32(8).DOI:
Drift-pile-beam-arch (Drift-PBA) method has become a major construction method in Beijing metro engineering
which can reduce soil deformation and effect on adjacent structures effectively. Based on the Huangzhuang station project of Beijing metro line No. 10 and the field monitoring data of surface and pipeline settlement
a three-dimensional finite element model of station structure
soil and pipeline is established. The influence of metro station built by drift-PBA method on ground movement is examined; and the response of adjacent rigid-joint pipelines is systematically researched from the aspects of settlement
deformation and pipe-soil interaction. The results show that the ground settlement induced by the two key stages composed of construction of pilot tunnel and center arch region accounts for more than 90 percentage of the total settlement. The settlement and deformation of rigid-joint pipelines
and differential settlement between pipe and soil are closely related to spatial relationship between station and adjacent pipes
and mainly induced by the excavation of soil below the pipelines. The whole body of the rigid-joint pipe bears deformation in common; and the pipeline sustains bending and axial deformation caused by ground movement; therefore
it is suggested that the pipeline strain should be used as deformation criterion