Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (12): 1785-1789.DOI: 10.12068/j.issn.1005-3026.2017.12.024

• Resources & Civil Engineering • Previous Articles     Next Articles

Frost Heaving Model Test and Response Analysis of Pile-Anchor Foundation Pit in Cohesive Soil Area

DAI Wu-kui1, LIANG Li1, XIN Quan-ming2   

  1. 1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China; 2. China Northeast Architectural Design & Research Institute Co.,Ltd., Shenyang 110819, China.
  • Received:2016-06-24 Revised:2016-06-24 Online:2017-12-15 Published:2018-01-02
  • Contact: DAI Wu-kui
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Abstract: Frost heaving effect of foundation pit in cohesive soil has a significant impact on engineering construction and support design. Based on selected foundation pit in Northeast China, mechanical deformation law of pile-anchor foundation pit in cohesive soil and the relationship between frozen earth pressure and displacement are derived through a series of laboratory experiments. Deformation-compatibility equations of supporting structure are introduced using the finite difference method considering soil-pile interaction, so that supporting system of the frost heaving pile-anchor foundation pit can be quantitatively designed. The case of the frost heaving effect on foundation pit offers a new method for anchor-pile system under the consideration of frost heaving action imposed by foundation pit with the influence of frost heaving pressure, which is more accurate to the actual condition of engineering monitoring, and can be applied to similar projects.

Key words: cohesive soil, pile-anchor, foundation pit, frost heaving, model test, finite difference method

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