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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2014  >  14(2): 14-20
SHEN Yu-peng, WANG Hui-huang, JING Peng, TIAN Ya-hu, FU Xiao-yan. Orthogonal analysis of influence factors for foundation pit support approaching existing railway line[J]. Journal of Traffic and Transportation Engineering, 2014, 14(2): 14-20.
Citation: SHEN Yu-peng, WANG Hui-huang, JING Peng, TIAN Ya-hu, FU Xiao-yan. Orthogonal analysis of influence factors for foundation pit support approaching existing railway line[J]. Journal of Traffic and Transportation Engineering, 2014, 14(2): 14-20.
shu

Orthogonal analysis of influence factors for foundation pit support approaching existing railway line

  • 1.

    School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

  • 2.

    Beijing Key Laboratory of Track Engineering, Beijing Jiaotong University, Beijing 100044, China

  • 3.

    Tianjin Railway Technical and Vocational College, Tianjin 300240, China

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  • Author Bio:

    SHEN Yu-peng (1977-), male, associate professor, PhD, +86-10-51683954, ypshen@bjtu.edu.cn

  • Received Date: 2013-12-17
  • Publish Date: 2014-04-25
    Abstract
  • The track level of existing railway line was taken as control standard, the influence factors including foundation pit size, existing railway line form and support form were orthogonally analyzed, and the calculation results and field settlement situation were compared. Based on the analysis methods of range and variance, the importance order of influence factors on track level approaching existing railway line was determined, and the track levels were analyzed with and without seepage.Analysis result shows that the importance order of influence factors on track level approaching existing railway line are the width of foundation pit, the subgrade height of existing railway line, the track number of existing railway line (the width of subgrade surface), the depth of foundation pit, support point position, support strength, pile length and the distance from foundation pit to slope toe.For support parameters, the first support position is dominant influence factor.When seepage is considered, the railway track level increases greatly.It is suggested to consider the width of foundation pit preferentially in construction process.The excavation approaching existing railway line should be done under sealing condition.The structure type with optimized parameters should be used to make railway track level less than 3.0 mm.

     

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