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Volume 33 Issue zk1
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XUE Xiang, SONG Lian-liang, JIA Liang, LE Yuan, GE Hong. New prediction method for post-construction settlement of soft-soil roadbed of expressway[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 125-130.
Citation: XUE Xiang, SONG Lian-liang, JIA Liang, LE Yuan, GE Hong. New prediction method for post-construction settlement of soft-soil roadbed of expressway[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 125-130.
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New prediction method for post-construction settlement of soft-soil roadbed of expressway

  • 1. BGI Engineering Consultants Ltd., Beijing 100022, China; 2. Beijing Capital Highway Development Co., Ltd., Beijing 100071, China

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  • Received Date: April 28, 2011
  • Published Date: November 30, 2011
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    • Abstract
  • The post-construction settlement of soft-soil roadbed is a serious hidden trouble to expressway. It is critical to control the deformation of soft-soil roadbed to optimize the construction speed and roadbed plan, to improve the construction quality and to ensure the project operation. The common prediction methods for post-construction settlement of soft-soil roadbed of expressway are qualitatively compared and analyzed. These methods include the Poisson,s model, grey model, genetic algorithm, neural network method, three-point method, curve fitting method and SFIA method. Finally, the SFIA method is selected to calculate the settlements of the second expressway of Beijing to Tianjin and the second expressway of Beijing International Airport. The calculated results are close to the actual values. For prediction of the post-construction settlement, soft-soil roadbed of expressway the roadbed construction process should be simulated, and the nonlinear soil modulus should be employed according to different construction loads.
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    • References (10)
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