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http://dx.doi.org/10.12814/jkgss.2017.16.4.241

Pullout Parameter According to the Length of Spreading of Extensible Geogrid Reinforcement  

Park, Jong-Beom (Shinmyeong Construction Engineering)
Ju, Jae-Woo (Dept. of Civil Engineering, Sunchon National Universuty)
Na, Hyun-Ho (Shinmyeong Construction Engineering)
Publication Information
Journal of the Korean Geosynthetics Society / v.16, no.4, 2017 , pp. 241-249 More about this Journal
Abstract
In a reinforced soil structure, the interaction between soil and an reinforcement occurs due to the frictional resistance on the contact surface between them or the pullout resistance of the reinforcement. Generally, a pullout test is conducted to measure pullout parameters of extensible geogrids. The factors affecting the pullout parameters in a pullout test include a density of backfill, shape of reinforcements, overburden pressure, length of spread reinforcements, and so on. The purpose of this study is to suggest a length of the spreading of an extensible reinforcement that can be used in estimating suitable pullout parameters of a pullout test. To this end, a pullout test was carried out. For the test, the length of spreading of an extensible reinforcement was set as 32 cm, 52 cm, 72 cm, and 100 cm, and effects of the lengths on pullout parameters were analyzed. As a result of the pullout test, it was confirmed that the frictional resistance between the soil and the reinforcement increases with the increase of the length of the reinforcement.
Keywords
Pullout Parameters; Spreading Length; Extensible Reinforcement;
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  • Reference
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