Numerical Study on Thermally-Induced Displacement Ratcheting of a Thin Rock Slab

Kim, Sihyun; Druszkowski, Ethan; Zhang, Jingtao; Kim, Seung-Hee

doi:10.1061/9780784482124.051

Cited by 2 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Those temperature effects are relatively well-studied, but recently, some other cases were reported, which indicate moderately mild temperature change still could induce structural failure of the system-a slip accumulation (or allegedly "slip ratcheting") over the interface between dissimilar materials accompanied with gravity. Examples of cyclic temperature and the corresponding displacement buildup of geotechnical systems are found in a variety of geotechnical problems, such as movements of natural rock slopes [1][2][3], exposed geosynthetic liners [4], pavement layers [5], and geothermal energy piles [6,7].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Studies on Thermally-Induced Slip Ratcheting on a Slope

Kim¹,

Kim

Zhang

et al. 2020

Infrastructures

Self Cite

View full text Add to dashboard Cite

Mild temperature fluctuation of a material sitting on a slope may only cause a small slip, but a large number of the repeated temperature changes can amplify the magnitude of the overall slip and eventually bring an issue of structural instability. The slip accumulation starts from the minor magnitude and reaches the extensive level called “slip ratcheting”. Experimental evidence for such thermally-induced slip ratcheting is first provided in this work. It is implemented with an acryl sheet placed on an inclined wood with a mild angle; it is found that the temperature fluctuation of the acryl sheet causes the sheet to slide down gradually without any additional loading. The numerical model is then attempted to emulate the major findings of the experiments. From the simulation work, the location of a neutral point is found when the acryl plate is heated, and another neutral point is observed when cooled down. The shift of the neutral point appears to be a major reason for the unrecovered slip after a temperature increase and decrease cycle. Finally, a parametric study using the numerical model is carried out to examine which parameters play a major role in the development of residual slips.

show abstract