표제지
감사의 글
목차
Notations 11
Abstract 13
연구사 15
I. 서론 16
1. 연구배경과 목적 16
2. 연구 동향 17
3. 연구 범위와 방법 19
II. 균열의 발생 기구 20
1. 콘크리트의 균열발생 20
2. 콘크리트의 균열발생 기준 23
2.1. 강도기준(Strength Criterion) 23
2.2. 변형도 기준(Strain Criterion) 23
2.3. 파괴에너지 기준 24
III. 각 국의 균열 발생 단면에 대한 유효 단면 2차 모멘트 규정 25
1. 휨 강성과 단면 2차 모멘트(Flexural Stiffness and Moment of inertia) 25
2. ACI(미국 콘크리트 학회), 콘크리트 구조설계기준 해설, 도로교 설계기준 28
3. FEMA 273 29
4. New Zealand Standard (NZS, 1995) 31
5. CEB State-of-the-art-Report(CEB 1996) 34
6. Architectural Institute of Japan Standard(1991) 37
IV. 실험 및 고찰 38
1. 하중조합 39
1.1. 하중계수 조합(계수하중 검토시) 39
2. 다솔교 40
2.1. 설계 제원 및 일반도 40
2.2. 균열도 42
2.3. 균열 발생 전ㆍ후 처짐 및 단면력 비교 43
3. 새동교 62
3.1. 설계 제원 및 일반도 62
3.2. 균열도 64
3.3. 균열 발생 전ㆍ후 처짐 및 단면력 비교 65
4. 송림 1교 82
4.1. 설계 제원 및 일반도 82
4.2. 균열도 84
4.3. 균열 발생 전ㆍ후 처짐 및 단면력 비교 85
V. 결론 102
References 103
Table 1. Effective rigidity(FEMA 273) 30
Table 2. Effective moment of inertia(NZS) 31
Table 3. Load factor Combination 39
Table 4. Dasol bridge deflection, shear force and bending stress of slab 58
Table 5. Dasol bridge deflection, shear force, moment and axial force of wall 61
Table 6. Saedong bridge deflection, shear force and bending stress of slab 80
Table 7. Saedong bridge deflection, shear force, moment and axial force of wall 81
Table 8. Songrim-1 bridge deflection, shear force and bending stress of slab 100
Table 9. Songrim-1 bridge deflection, shear force, moment and axial force of wall 101
Fig. 1. Concrete crack process 21
Fig. 2. Moment - curvature diagram and variable flexural stiffness 26
Fig. 3. Variable flexural stiffness ends - fixed reinforced concrete under uniform load 27
Fig. 4. Effective stiffness analysis(NZS) 32
Fig. 5. Dasol bridge plane and front 41
Fig. 6. Dasol bridge crack position 42
Fig. 7. Dasol bridge slab deflection (CBmax) 43
Fig. 8. Dasol bridge slab deflection (CBmin) 44
Fig. 9. Dasol bridge wall deflection (CBmax) 45
Fig. 10. Dasol bridge wall deflection (CBmin) 46
Fig. 11. Dasol bridge slab bending moment (CBmax) 47
Fig. 12. Dasol bridge slab bending moment (CBmin) 48
Fig. 13. Dasol bridge wall bending moment (CBmax, Mxx) 49
Fig. 14. Dasol bridge wall bending moment (CBmin, Mxx) 50
Fig. 15. Dasol bridge wall bending moment (CBmax, Myy) 51
Fig. 16. Dasol bridge wall bending moment (CBmin, Myy) 52
Fig. 17. Dasol bridge slab shear force (Vyy) 53
Fig. 18. Dasol bridge wall shear force (Vxx) 54
Fig. 19. Dasol bridge wall shear force (Vyy) 55
Fig. 20. Dasol bridge wall axial force (CBmax) 56
Fig. 21. Dasol bridge wall axial force (CBmin) 57
Fig. 22. Saedong bridge plane and front 63
Fig. 23. Saedong bridge crack position 64
Fig. 24. Saedong bridge slab deflection (CBmax) 65
Fig. 25. Saedong bridge slab deflection (CBmin) 66
Fig. 26. Saedong bridge wall deflection (CBmax) 67
Fig. 27. Saedong bridge wall deflection (CBmin) 68
Fig. 28. Saedong bridge slab bending moment (CBmax) 69
Fig. 29. Saedong bridge slab bending moment (CBmin) 70
Fig. 30. Saedong bridge wall bending moment (CBmin, Mxx) 71
Fig. 31. Saedong bridge wall bending moment (CBmin, Mxx) 72
Fig. 32. Saedong bridge wall bending moment (CBmax, Myy) 73
Fig. 33. Saedong bridge wall bending moment (CBmin, Myy) 74
Fig. 34. Saedong bridge slab shear force (Vyy) 75
Fig. 35. Saedong bridge wall shear force (Vxx) 76
Fig. 36. Saedong(Seadong) bridge wall shear force (Vyy) 77
Fig. 37. Saedong bridge wall axial force (CBmax) 78
Fig. 38. Saedong bridge wall axial force (CBmin) 79
Fig. 39. Songrim-1 bridge plane and front 83
Fig. 40. Songrim-1 bridge crack position 84
Fig. 41. Songrim-1 bridge slab deflection (CBmax) 85
Fig. 42. Songrim-1 bridge slab deflection (CBmin) 86
Fig. 43. Songrlm-1 bridge wall deflection (CBmax) 87
Fig. 44. Songrim-1 bridge wall deflection (CBmin) 88
Fig. 45. Songrim-1 bridge slab bending moment (CBmax) 89
Fig. 46. Songrlm-1 bridge slab bending moment (CBmin) 90
Fig. 47. Songrim-1 bridge wall bending moment (CBmax, Mxx) 91
Fig. 48. Songrim-1 bridge wall bending moment (CBmin, Mxx) 92
Fig. 49. Songrim-1 bridge wall bending moment (CBmax, Myy) 93
Fig. 50. Songrim-1 bridge wall bending moment (CBmin, Myy) 94
Fig. 51. Songrim-1 bridge slab shear force (Vyy) 95
Fig. 52. Songrim-1 bridge wall shear force (Vxx) 96
Fig. 53. Songrim-1 bridge wall shear force (Vyy) 97
Fig. 54. Songrim-1 bridge wall axial force (CBmax) 98
Fig. 55. Songrim-1 bridge wall axial force (CBmin) 99