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http://dx.doi.org/10.7843/kgs.2016.32.10.31

Investigation of the Change of Soil Arch Structure in Model Particle Assembly Subjected to Displacing Trapdoor via Photoelastic Measurement Technique  

Shin, Sang-Young (Dept. of Civil Eng., Kyung Hee Univ.)
Jung, Young-Hoon (Dept. of Civil Eng., Kyung Hee Univ.)
Kim, Taesik (Dept. of Civil Eng., Hongik Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.32, no.10, 2016 , pp. 31-40 More about this Journal
Abstract
In order to investigate the change in soil arch structure developed within the soil subjected to trapdoor movement, various responses in the deformed particle assembly were observed via photoelastic measurement technique. The particle assembly was composed of the regularly stacked model particles coated by thin photoelastic material. Variation of the internal structure transmitting contact forces were observed by taking images showing the photoelastic responses and compared with the change in slip lines and pressures measured by load cells placed beneath the assembly. Initial soil arch structure established immediately after the trapdoor movement collapsed progressively and meanwhile a new extended structure was developed against further movement of the trapdoor. For the sufficient movement of the trapdoor, initially identical regions bounded by the soil arch structure and slip lines were separated and the region enclosed by slip lines became a part of the region loosing the transmitting contact forces identified by photoelastic measurement.
Keywords
Trapdoor test; Soil arch; Contact force; Photoelastic measurement; Particle assembly;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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