Measurement of frozen soil–pile dynamic properties: A system identification approach

Chen, Gang Sheng; Davis, Duane A.; Hulsey, J. Leroy

doi:10.1016/j.coldregions.2011.08.007

Cited by 9 publications

(1 citation statement)

References 15 publications

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“…A new type of concrete pile, which was carved with grooves refilled with largegrained porous materials, was introduced in Qinghai-Tibet plateau (Li and Xu, 2008). Free response of frozen soil-pile interaction was adopted for system identification, which provided a fast way to estimate nonlinearity and approximate modes (Chen et al, 2012). Crowther (2013) presented a design approach to analyze the influence of lateral loads on piles embedded in a layered frozen soil profile.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the anti-jacking-up performance of a screw pile for photovoltaic stents in a seasonal frozen region

Wang

Liu

Zhao

et al. 2016

J. Zhejiang Univ. Sci. A

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The soils in seasonal frozen regions freeze and thaw frequently, causing severe frost heave and thaw settlement problems, which bring challenges to piles of photovoltaic stents. In this paper, laboratory tests are conducted with different types of screw piles under freezing conditions, with also using smooth piles for contrast. The aim is to simulate the freezing process of screw piles according to practical working conditions based on the similarity principle. Internal thermal resistance is ignored. The change laws of temperature, displacement, as well as the influence factors of types of screw piles are analyzed. The results indicate that: with a freezing depth of 30 cm, which is half of the pile length, large-double-bladed screw piles perform the best in antijacking-up, while all-bladed screw piles perform the worst, independent of the types of soil samples tested. The fitting relationship between jacking-up displacement and freezing depth is also proposed for each type of pile. Results obtained can provide an important reference to site construction in seasonal frozen regions.

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Section: Introductionmentioning

confidence: 99%