표제지
감사의 글
목차
Abstract 7
연구사 9
Ⅰ. 서론 10
1. 연구 배경 및 목적 10
2. 연구동향 11
Ⅱ. 토질정수 결정 및 분석방법 12
1. 개요 12
2. 흙의 물리적 성질 시험 12
1) 비중시험 12
2) 입도시험 13
3) 액성한계 시험 13
4) 소성한계 시험 13
5) 함수비 시험 14
6) 다짐 시험 14
3. 흙의 역학적 성질 시험 15
1) 압밀시험 15
2) 일축압축강도시험 16
3) 삼축압축강도시험 16
4. 현장시험 17
1) 표준관입시험(Standard Penetration Test) 17
5. 토질의 분류 및 기재 방법 19
1) 통일분류법 19
6. 시험방법별 상관관계 22
1) 비배수전단강도 22
2) 압축지수(Cc)와 물리적 특성과의 관계(이미지참조) 22
3) 강도증가율의 산정 (Cu/P0)(이미지참조) 24
Ⅲ. 제방개요 및 지반조사 27
1. 제방개요 27
1) 대상제방 27
2) 황강 중·하류 유역 대상제방 평면도 28
3) 제방의 단면 29
2. 지반조사 29
1) 시추조사 29
2) 토질분포 31
3. 지반조사결과 35
1) 물리시험 35
2) 역학시험 35
Ⅳ. 토질특성 분석 36
1. 토질분석 36
1) 자연함수비 36
2) 비중 40
3). 중류시점으로부터 거리에 따른 특성 44
4). 공극비 48
2. 물리적 상호관계 52
1) 자연함수비와 공극비 52
2) 자연함수비와 단위체적중량 55
3) 액성한계 59
4) 소성지수 62
3. 세립토의 역학적 성질 65
1) 비배수전단강도 65
2) 압축지수 70
3) 과압밀비 72
4) 선행압밀하중 74
4. 세립토의 물리역학적 상호관계 76
1) 압축지수 77
2) 강도 증가율 83
Ⅴ. 결론 85
Notations 90
Reference 92
Table. 1. Kinds of compact test method 14
Table. 2. Estimation or decision fact by N value 18
Table. 3. Estimation standard with the naked eye of soil 20
Table. 4. Soil classification table by unified soil classification system(KS F 2324) 21
Table. 5. Equations of Cc(이미지참조) 24
Table. 6. Embankments of Hwang River midstream and downstream basin 27
Table. 7. Subsurface exploration 30
Table. 8. Type and number of test 30
Table. 9. Results of average physical test value 35
Table. 10. Results of average mechanical test value 36
Table. 11. In situ moisture content of midstream basin soils ; Min, Max and Average value 37
Table. 12. In situ moisture content of downstream basin soil ; Min, Max and Average value 39
Table. 13. Specific gravity of midstream basin soils ; Min, Max and Average value 41
Table. 14. Specific gravity of downstream basin soils ; Min, Max and Average value 43
Table. 15. Void ratio of midstream basin soils ; Min, Max and Average value 49
Table. 16. Void ratio of downstream basin soils ; Min, Max and Average value 51
Table. 17. The results of liquid limit ; Min, Max and Average value 61
Table. 18. Results of plastic limit ; Min, Max and Average value 65
Table. 19. Results of undrained shear strength ; Min, Max and Average value 67
Table. 20. Results of sensitivity ratio ; Min, Max and Average value 69
Table. 21. Results of compression index ; Min, Max and Average value 71
Table. 22. Results of over-consolidation ratio ; Min, Max and Average value 73
Fig. 1. Relationship between ωn and Cr (Mesri, 1973)(이미지참조) 23
Fig. 2. A ground plan embankments of Hwang River midstream basin 28
Fig. 3. A ground plan embankments of Hwang River downstream basin 28
Fig. 4. The standard cross section of embankment 29
Fig. 5. Soil type of midstream basin 32
Fig. 6. Soil type of downstream basin 34
Fig. 7. Relationship between in situ moisture content of midstream basin soils and depth 37
Fig. 8. Relationship between in situ moisture content of downstream basin soils and depth 39
Fig. 9. Relationship between specific gravity of midstream basin soils and depth 41
Fig. 10. Relationship between specific gravity of downstream basin soils and depth 43
Fig. 11. Fine-grained soil contents-length 44
Fig. 12. In situ moisture content of soil-length 46
Fig. 13. Specific gravity of soil-length 47
Fig. 14. Relationship between void ratio of midstream basin soil and depth 48
Fig. 15. Relationship between void ratio of downstream basin soil and depth 50
Fig. 16. ωn - Void ratio(e) ; midstream basin(이미지참조) 53
Fig. 17. ωn - Void ratio(e) ; downstream basin(이미지참조) 54
Fig. 18. ωn - rt ; midstream basin(이미지참조) 56
Fig. 19. ωn - rt ; downstream basin(이미지참조) 58
Fig. 20. Relationship between liquid limit and depth 59
Fig. 21. Relationship between liquid limit and in situ moisture content 61
Fig. 22. Relationship between plastic limit and depth 63
Fig. 23. Relationship between plastic limit and in situ moisture content 64
Fig. 24. Relationship between undrained shear strength and depth 66
Fig. 25. Relationship between sensitivity ratio and depth 68
Fig. 26. Relationship between compression index and depth 70
Fig. 27. Relationship between over-consolidation ratio and depth 72
Fig. 28. Relationship between pre-consolidation stress and depth 74
Fig. 29. Relationship between pre-consolidation stress and over-consolidation ratio 76
Fig. 30. Relationship between compression index and in situ moisture content 77
Fig. 31. Relationship between compression index and void ratio 79
Fig. 32. Relationship between compression index and liquid limit 80
Fig. 33. Relationship between compression index and plastic limit 82
Fig. 34. Relationship between rate of strength increase and plastic limit 83