Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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Dynamic Response Characteristics of Embankment Model for Various Slope Angles

다양한 경사를 가지는 제방모형의 지반 증폭 특성

  • Kim, Hoyeon (Graduate Student, Dept. of Civil Engineering, College of Engineering, Chosun University) ;
  • Jin, Yong (Graduate Student, Dept. of Civil Engineering, College of Engineering, Chosun University) ;
  • Lee, Yonghee (Advanced Plant Laboratory, Central Research Institute, Korea Hydro and Nuclear Power Co., Ltd.) ;
  • Kim, Hak-sung (Advanced Plant Laboratory, Central Research Institute, Korea Hydro and Nuclear Power Co., Ltd.) ;
  • Kim, Daehyeon (Dept. of civil Engineering, College of Engineering, Chosun University)
  • Received : 2020.06.07
  • Accepted : 2020.06.16
  • Published : 2020.06.30
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Abstract

In this study, the dynamic response characteristics of the embankment model were analyzed using shaking table experiments. Laminar shear box was used to minimize the boundary effect of the model. The ratio of the vertical length to horizontal length of the slopes were 1:1, 1:1.5, and 1:2. The sensor array which is consist of 12 accelerometers was used to measure acceleration time-histories at each location of the slope model. The dynamic response characteristics of the models were analyzed for sine wave, sinesweep wave, and artificial earthquake wave in this study. The experimental results show that the dynamic response of the embankment model is increased with the slope angle. Furthermore, the experimental setup used in this study was verified with the comparative analysis between experimental results and 1-D analytical simulation on the flat ground model.

본 연구는 제방모형의 사면 경사에 따른 가속도 증폭특성을 분석하기 위하여 진동대 실험을 수행하였으며, 경계조건의 영향을 최소화할 수 있는 연성토조를 활용하였다. 제방모형의 수직 대 수평 경사는 각각 1:1, 1:1.5, 1:2로 설정되었으며, 위치에 따른 지반증폭을 계측하기 위하여 12개의 가속도계가 축소모형 내부에 매설되었다. 주파수에 따른 지반의 응답을 파악하기 위하여 축소모형에는 다양한 주파수 특성을 갖는 지진동이 가진되었다. 실험 결과, 사면의 경사가 클수록 지반증폭이 더 커짐을 실험적으로 확인하였다. 또한, 본 연구에서 활용된 실험 시스템의 신뢰성을 검토하기 위하여 1차원 지반응답해석 결과와 수평지반 모형에서의 실험 결과를 비교하였다.

Keywords

References

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