Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Comparative Analysis of Final Consolidation Settlement by Degree of Consolidation in Soft Soils of Yeongam-Haenam Areas

영암-해남 연약지반의 압밀도 변화에 따른 최종침하량 비교분석

  • Kim, Tae-Wan (Dept. of Civil and Environmental Engrg., Dongshin Univ.) ;
  • Nam, Geon (Dept. of Civil and Environmental Engrg., Dongshin Univ.) ;
  • Kim, Jae-Hong (Dept. of Civil and Environmental Engrg., Dongshin Univ.)
  • 김태완 (동신대학교 토목공학과) ;
  • 남건 (동신대학교 토목공학과) ;
  • 김재홍 (동신대학교 토목공학과)
  • Received : 2023.07.07
  • Accepted : 2023.08.03
  • Published : 2023.09.30
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Abstract

To effectively improve soft soils, it is necessary to perform ground behavior characteristics and stability management through measurement activities when embankment of structures on soft soils is conducted. However, there are many differences between the actual ground behavior and the initial design plan. To address this issue, this study analyzed the measured settlement in the Yeongam-Haenam areas using the Hyperbolic method to predict the settlement based on the measurement data. From the completion time of the embankment in the target area, the final settlement was predicted through the change in the degree of consolidation by the measurement period. Furthermore, the final settlement according to the change in degree of consolidation was compared and analyzed through finite element analysis and field measurement.

효과적인 연약지반 개량을 위해서는 연약지반 위에 구조물의 축조나 성토를 진행할 시 계측활동을 통하여 지반의 거동특성 및 안정관리를 실시하여야 한다. 연약지반의 여러 현장에서 계측관리가 필요하고 그에 따른 침하량 예측방법을 적용할 때 최종침하량의 정확성이 향상된다. 그러나 이는 실제 지반의 거동과 초기 설계 계획과 많은 차이점을 보이고 있다. 이러한 설계상의 문제점을 해결하기 위하여 본 연구에서는 계측자료를 토대로 장기침하량을 예측하는 방법인 쌍곡선법(Hyperbolic method)를 사용하여 연구대상지역인 전남 영암-해남 연약지반의 계측침하량을 분석하였다. 대상지역의 최종 압밀성토가 종료된 시점부터 계측기간별 압밀도의 변화를 통하여 최종침하량을 예측하였으며, 압밀도의 변화에 따른 최종침하량을 유한요소해석과 현장계측값을 비교·분석하였다.

Keywords

Acknowledgement

이 논문은 정부(교육부)의 재원으로 한국연구재단의 지원을 받아 수행된 기초연구사업임(No. 2020R1I1A3075110).

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