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    Volume 47, Issue 5 (September 2019)

    Special Issue Paper

    Mechanism of Pile-Soil Relative Vertical Displacement under the Freeze-Thaw Action

    (Received 22 May 2017; accepted 9 April 2018)

    Published Online: 2018

    CODEN: JTEVAB

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    Abstract

    To effectively mitigate the risk of freeze-thaw disasters, the lines, poles, and piles in point-line constructions need be deployed with careful consideration of the compaction degree control of backfilled soil. Vertical displacements of soil and piles occur at the same time under freeze-thaw action, thereby making it difficult to determine the frost heave and thaw subsidence of piles. To solve this problem, we monitored the vertical displacements of piles and soil simultaneously and found that the pile-soil interaction differs, depending on the variances in backfill density. Such displacement also ultimately results in “pile-soil” system modification synchronization. To determine the vertical displacement of the pile foundation, one must first determine the relative displacement of the pile and soil. This work presents serial experimental results and verifies experimentally that an optimal degree of soil compaction exists in which the pile shows minimal changes in its vertical displacement.

    Author Information:

    Zhang, Ze
    State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou

    Feng, Wenjie
    State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou

    Zhang, Hu
    State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou

    Shi, Xiangyang
    State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou

    Ming, Jiao
    State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Science, Lanzhou


    Stock #: JTE20170294

    ISSN:0090-3973

    DOI: 10.1520/JTE20170294

    Author
    Title Mechanism of Pile-Soil Relative Vertical Displacement under the Freeze-Thaw Action
    Symposium ,
    Committee D18