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http://dx.doi.org/10.5762/KAIS.2018.19.11.750

Pullout Behavior of Mechanically Stabilized Earth Wall Abutment by Steel Reinforcement and Backfill Properties  

Kim, Taesu (Research Division, Korea Expressway Corporation)
Lee, Soo-Yang (Safety and Disaster Management Division, Korea Expressway Corporation)
Nam, Moon S. (Research Division, Korea Expressway Corporation)
Han, Heuisoo (Department of Civil Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.11, 2018 , pp. 750-757 More about this Journal
Abstract
The mechanically stabilized earth wall abutment is an earth structure using a mechanically stabilized earth wall and it uses in-extensional steel reinforcements having excellent friction performance. In order to analyze the pullout behavior of in-extensional steel reinforcements usually applied on the mechanically stabilized earth wall abutment, effects of stiffness and particle-size distributions of backfills and also horizontal spacings were considered in this study. As a result of parametric analyses, the highest pulling force acted on the uppermost reinforcement, and the stiffness and the particle-size distributions of the backfill significantly affected the pulling resistance of the reinforced soils. The internal friction angle of backfills should be at least 25 degrees, the coefficient uniformity factor should be at least 4, and the horizontal spacing of the uppermost steel reinforcement should be less than 25cm. Therefore, in order to secure the pullout resistance of the reinforced soil, it is necessary a properly spacing of reinforcement and more strict quality control for the backfill.
Keywords
Mechanically stabilized earth wall abutment; Pullout behavior; In-extensional steel reinforcements; Backfills; Pullout safety factor;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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