표제지
목차
I. 서론 7
II. 역해석에 의한 압밀침하 해석 방법 9
1. Terzaghi의 압밀이론에 의한 Curve fitting 방법 9
1) 점증재하에 대한 적용 11
2) 해석프로그램의 기본방정식 11
2. 쌍곡선방법(Hyperbolic method) 14
3. Asaoka방법 17
III. 재료 및 방법 19
1. 분석대상 지반의 현황 19
2. 지반의 물리 역학적 성질 21
3. 지중응력분포에 대한 고려 23
IV. 결과 및 고찰 26
1. 압밀이론에 의한 침하량 추정 26
2. 쌍곡선 방법에 의한 최종침하량 및 압밀도 산정 39
3. Asaoka 방법에 의한 최종침하량 및 압밀도 산정 43
4. 각 해석 방법별 최종침하량 비교 46
V. 결론 48
참고문헌 50
ABSTRACT 52
Table 3-1. The mechanical parameters of analyzed field 23
Table 4-1. The compression index and the coefficient of consolidation resulted from the each curve fitting method. 35
Table 4-2. The Final settlement and consolidation ratio resulted from the each curve fitting method. 37
Table 4-3. The shear settlement estimated by Curve fitting 38
Table 4-4. The comparison of final settlement obtained from each method 47
Fig.2-1. The schematic diagram of simulation to gradual step consolidation 12
Fig.2-2. Hyperbolic Analysis on consolidation settlement 16
Fig.2-3. Determination of parameter by Hyperbolic method 16
Fig.2-4. Correlation coefficient of Asaoka method 17
Fig.3-1. The horizontal position of monitoring section 19
Fig.3-2. Monitored section of DP-3 20
Fig.3-3. Monitored section of DP-5 20
Fig.3-4. Grain size distribution curve 21
Fig.3-5. The result of Cone penetration test 22
Fig.3-6. The results of piezocone test 22
Fig.3-7. Stress distribution at 5m of depth according to height of embankment 24
Fig.3-8. Stress distribution under the ground surface according to depth 25
Fig.4-1. The analysis result at DP-1 28
Fig.4-2. The analysis result at DP-3 30
Fig.4-3. The analysis result at DP-4 32
Fig.4-4. The analysis result at DP-5 33
Fig.4-5. The result of measurement by inclinometer 34
Fig.4-6. The comparison of each parameters obtained from laboratory test and back analysis 36
Fig.4-7. The relationship between the thickness of soft ground and shear settlement 38
Fig.4-8. The procedure of hyperbolic analysis at DP-1 39
Fig.4-9. Hyperbolic analysis at DP-3 40
Fig.4-10. Hyperbolic Analysis at DP-4 41
Fig.4-11. Hyperbolic Analysis at DP-5 42
Fig.4-12. The procedure of Asaoka analysis at DP-1 43
Fig.4-13. The procedure of Asaoka analysis at DP-3 44
Fig.4-14. The procedure of Asaoka analysis at DP-4 45
Fig.4-15. The procedure of Asaoka analysis at DP-5 46