불포화 사질토의 도로함몰 특성에 관한 실험적 연구
(주)코리아스칼라
- 최초 등록일
- 2023.04.05
- 최종 저작일
- 2018.02
- 7페이지/ 어도비 PDF
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서지정보
ㆍ발행기관 : 한국도로학회
ㆍ수록지정보 : 한국도로학회논문집 / 20권 / 1호
ㆍ저자명 : 권기철
목차
ABSTRACT
1. 서론
2. 모형토조 시험장치 및 시험절차
3. 시험시료
4. 시험결과 및 분석
4.1. 불포화토 지반의 동공 발생 및 확장 형태
4.2. 함몰에 대한 유출구 크기의 영향
4.3. 함몰에 대한 침투유량의 영향
4.4. 함몰에 대한 상대밀도의 영향
5. 결론
REFERENCES
영어 초록
PURPOSES: The purpose of this study is to identify the road-subsidence mechanism in unsaturated sandy soils.
METHODS: A series of soil chamber tests were conducted under various conditions.
RESULTS: The cavity-expansion characteristics in unsaturated sandy soils due to seepage were affected by the outlet size, seepage intensity, relative density, and fine content.
CONCLUSIONS: In unsaturated sandy soils, the cavity-expansion speed was affected by the outlet size, relative density, seepage intensity, and clay content; however, the cavity-expansion shape was very similar. As the outlet size and seepage intensity increased, the cavityexpansion speed increased. As the relative density increased, the cavity-expansion speed increased because of a sudden decrease in shear strength, resulting from the increased saturation (reduction of matric suction). The cavity expanded faster with the increasing clay content, up to a certain threshold. It expanded at a slower rate once it passed the threshold. Finally, it reached a stable state where the cavity did not expand due to seepage.
참고 자료
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