Development of Laboratory Experiment System to Unravel the Effect of the Freeze of Geomaterial on Geosytheic Reinforcement

Liu, Shuang; Kawaguchi, Takayuki; Kawajiri, Shunzo; Nakamura, Dai; Ogasawara, Akinobu

doi:10.5030/jcigsjournal.35.37

Cited by 1 publication

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“…2 have been reported in cold and snowy environments. (4) Such collapses, in which concrete panels fall off, are serious problems that have not occurred even after earthquakes or record rainfall. The reason for the collapses is thought to be that the freezing pressure (i.e., expansion pressure) caused by the freezing of the soil, which is characteristic of cold and snowy environments, exerts an excessive tensile force on the reinforcement, causing its fracture.…”

Section: Introductionmentioning

confidence: 99%

Application of Wireless Power Transfer Technologies for Soil Temperature Measurement System of Reinforced Soil Wall in Cold and Snowy Environments

Ogasawara¹,

Kawajiri²,

Fujiwara³

et al. 2021

Sensors and Materials

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Reinforced soil walls, which are civil engineering structures, are subjected to catastrophic collapse when concrete panels fall off in cold and snowy environments. One of the methods to predict such collapse is soil temperature monitoring of the reinforced soil wall. However, in cold and snowy environments, health monitoring requires a lot of effort because the snow load breaks the wires connecting the data logger to the sensors, whereby the collected data fail to reach the logger. In this study, we developed a prototype wireless and battery-free soil temperature measurement system using wireless power transfer (WPT), and conducted field observation experiments for about nine months on a full-scale test reinforced soil wall and an in-service highway. The seasonal variation of the temperature data obtained from the WPT method was consistent with that of the temperature data obtained continuously by the traditional method.

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Section: Introductionmentioning

confidence: 99%