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A Fundamental Approach for an Investigation of Behavior Characteristics of the Vegetation Structures Using Seeded Sandbags

A Fundamental Approach for an Investigation of Behavior Characteristics of the Vegetation Structures Using Seeded Sandbags,H. T. Kim,S. D. Yoo,S. S. P

A Fundamental Approach for an Investigation of Behavior Characteristics of the Vegetation Structures Using Seeded Sandbags  
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In this study, a novel green retaining wall technology, named as GRW (Green Retaining Wall), was developed to enhance constructability, cost-effective and geoenvironment friendly system. Up to now, the GRW system has been investigated mainly focusing on an establishment of the design procedure. The analyti- cal procedure for sand bag design has been proposed to evaluate frictional characteristics and stability of the GRW system. In addition, large-scale direct shear tests were performed to establish the frictional characteris- tics between the seeded sandbag and the connection unit of the GRW system. A stability analysis formula was proposed for the GRW system that can be applied to riverside or shoreline. Hydraulic experiments were per- formed to quantify the loss rate of sand from the sand bags. By conducting the safety analysis for the flow pressure proposed in this study, the maximum allowable velocity and the minimum required weight were cal- culated and compared with those of the conventional design cases. The insights into the behavior of the GRW system observed in this study will be reported and discussed.
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