• Title/Summary/Keyword: Geotextile bag system

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Dynamic Active Earth Pressure of Gabion-Geotextile Bag Retaining Wall System Using Large Scale Shaking Table Test (진동대 실험을 이용한 게비온-식생토낭 옹벽 시스템의 동적주동토압 산정)

  • Kim, Da Been;Shin, Eun Chul;Park, Jeong Jun
    • Journal of the Korean GEO-environmental Society
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    • v.20 no.12
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    • pp.15-26
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    • 2019
  • This study was conducted to characterize shearing strength of geotextile bag, connecting materials and gabion. A largescale shaking take tests were conducted to assess kinetic characteristics of gabion-geotextile bag retaining wall. Based on the results of large-scale shaking table test, dynamic characteristics of gabion-geotextile bag retaining wall structure against acceleration, displacement, and earth pressure were also analyzed. The increments of dynamic active earth pressure were determined to be (0.376-0.377)H at 1:0.3 slope and $(0.154-0.44)g_n$ earthquake acceleration, and (0.389-0.393)H at 1:1 slope, suggesting that the increments tend to rise as the slope decreases.

Analysis of Geotextile Bag Reinforcing Effect on Railway Roadbed (지오텍스타일 백을 이용한 철도노반 보강효과 분석)

  • Lee, Dong-Hyun;Shin, Eun-Chul
    • Journal of the Korean Geosynthetics Society
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    • v.4 no.4
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    • pp.3-11
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    • 2005
  • In this study, a large-scale laboratory model test and 2-D numerical analysis were conducted to verify the reinforcement effect by utilizing geotextile bag on the railway roadbed. Static loading which simulated train load was applied on the geotextile-reinforced railway roadbed and also unreinforced railway roadbed. Computer program named Pentagon 2-D which is a part of FEM programs was used in the numerical analysis. Based on the results of laboratory test and 2-D numerical analysis, the effect of load distribution and settlement reduction was found to be depending on the geotextile characteristics, tensile strength of geotextile, and interface friction angle between geotextile bags. In general, the result of 2-D numerical analysis shows lower value than that of laboratory test.

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