Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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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 (Department of Civil & Environmental Engineering, Incheon National University) ;
  • Shin, Eun Chul (Department of Civil & Environmental Engineering, Incheon National University) ;
  • Park, Jeong Jun (Incheon Disaster Prevention Research Center, Incheon National University)
  • Received : 2019.10.03
  • Accepted : 2019.11.12
  • Published : 2019.12.01
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Abstract

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.

본 연구에서는 게비온-식생토낭 옹벽에 대한 동적 특성을 평가하기 위해서 실대형 진동대 실험 시 토조 내부에 포설되는 흙과 식생토낭, 연결재, 게비온 등의 전단특성을 규명하고, 이 결과를 이용하여 실대형 진동대 실험을 수행하였다. 또한, 식생토낭벽체의 기울기, 지반가속도 등의 실험조건으로 실대형 진동대 실험을 실시하여 가속도, 변위, 토압에 대한 게비온-식생토낭 옹벽시스템의 동적 특성을 분석하였다. 결과, 1:0.3 기울기에서는 지진가속도가 $(0.154-0.44)g_n$일 때, 동적주동토압의 작용점은 저면으로 부터 (0.376-0.377)H인 것으로 나타났다. 1:1 기울기에서는 (0.389-0.393)H으로 나타나 기울기가 완만할수록 동적주동토압의 작용점은 높은 것으로 나타났다.

Keywords

References

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