표제지
목차
Abstract 10
제1장 서론 12
1.1. 연구 배경 12
1.2. 연구 목적 14
제2장 기존 연구 16
2.1. 발파진동 기준 16
2.1.1. 국내 진동허용 기준치 17
2.1.2. 국외 진동허용 기준치 20
2.2. 진동이 건축물에 미치는 영향 29
2.2.1. 건축물의 분류 29
2.2.2. 건축물에 미치는 진동피해의 유형 30
2.2.3. 진동속도에 따른 건물 피해정도 30
2.3. 발파 기본 이론 32
2.3.1. 개요 32
2.3.2. 발파 진동의 종류 및 전파 34
2.3.3. 발파 지반진동의 예측 38
2.3.4. 진동속도와 진동레벨과의 관계 40
제3장 현장 상황 및 발파하중 산정 43
3.1. 연구대상 현장 43
3.1.1. 현장 상황 및 지층 분포 43
3.1.2. 발파진동 현장측정 46
3.2. 발파하중 산정 48
3.2.1. 발파하중 산정 기본식 48
3.2.2. 발파하중 산정 49
제4장 해석 지반정수 산정 52
4.1. 정적 지반정수 52
4.1.1. 토사 및 풍화암 53
4.1.2. 기반암 55
4.2. 동적 지반정수 57
4.2.1. 토사 및 풍화암 58
4.2.2. 기반암 59
제5장 발파진동의 지반해석 60
5.1. 해석 프로그램 60
5.2. 발파진동 해석 61
5.2.1. 검토구간 단면 모델링 61
5.2.2. 발파하중 시간이력함수 산정 62
5.3. 발파진동 해석 결과 63
5.3.1. 시간에 따른 진동속도 63
5.3.2. 발파에 따른 지반변위 68
5.3.3. 계측결과와 비교분석 71
제6장 결론 77
참고문헌 78
Table 2.1. Permissible vibration velocity criteria used in domestic public institutions 18
Table 2.2. Assortment according to building type and permissible vibration velocity by frequency 19
Table 2.3. Assortment according to vibration source, route and building physical condition 19
Table 2.4. DIN 4150 amended 1986 (for temporary vibration) 21
Table 2.5. DIN 4150 amended 1986 (for normal vibration) 21
Table 2.6. Characteristics of blasts by ground velocity and extent of damage 22
Table 2.7. Typical specifications for limiting blasting peak particle velocity levels 24
Table 2.8. Relationship between the peak particle velocity and nature of damage 24
Table 2.9. Permissible peak particle velocity 25
Table 2.10. Ground velocity in blasting 26
Table 2.11. Permissible peak particle velocity of blasting in Osaka 27
Table 2.12. Permissible peak particle velocity of blasting in Shinjuku 27
Table 2.13. Maximum satisfactory magnitudes of vibration with respect to human response for up to three blast vibration events per day(BS6472-2:2008) 28
Table 2.14. Advantage and disadvantage to the type of building in Korea 29
Table 2.15. Comparison of building damage according to vibration velocity 31
Table 2.16. Measuring unit of blasting vibration 33
Table 2.17. Degree of influence of blast factors on vibration 39
Table 2.18. Relationship between peak particle velocity and vibration level 42
Table 3.1. Applied vibration velocity at target site during blasting in tunnel 46
Table 3.2. Tunnel support type and blasting pattern at the site 46
Table 3.3. Detonation characteristics of high performance Emulsion explosive 48
Table 4.1. Selected static ground material parameters for numerical analysis 53
Table 4.2. N-value of standard penetration tests 53
Table 4.3. Results of cohesion and internal friction angle of colluvium, residual soil, and weathered rock 54
Table 4.4. Results of elastic modulus of colluvium, residual soil, and weathered rock 54
Table 4.5. Results of poisson's ratio of colluvium, residual soil, and weathered rock 54
Table 4.6. Results of unit weight of rock mass 55
Table 4.7. Results of cohesion of rock mass 55
Table 4.8. Results of internal friction angle of rock mass 56
Table 4.9. Results of elastic modulus of rock mass 56
Table 4.10. Results of poission's ratio of rock mass 56
Table 4.11. Selected dynamic ground material parameters for numerical analysis 57
Table 4.12. Results of shear wave velocity of colluvium, residual soil, and weathered rock 58
Table 4.13. Results of dynamic poisson's ratio of colluvium, residual soil, and weathered rock 58
Table 4.14. Results of shear wave velocity of rock mass 59
Table 4.15. Results of dynamic poission' s ratio of rock mass 59
Table 5.1. Results of blast-induced peak particle velocity at house A 66
Fig. 2.1. Comparison of blast- and earthquake-induced vibration 16
Fig. 2.2. Relationship between particle velocity and frequency (USBM, DIN 4150) 23
Fig. 2.3. Radial fractures around a blast hole and vibration propagation 32
Fig. 2.4. Displacement, velocity and acceleration of sine vibration 33
Fig. 2.5. Common type of elastic waves induced by blasting 35
Fig. 2.6. Typical pattern of blast-induced vibration 35
Fig. 2.7. Body waves motion: (a) compression and (b) shear and surface waves motions, (c) Rayleigh and (d) Love 37
Fig. 2.8. Time history from blasting source D: direct wave, R: reflected wave, refractive wave) 38
Fig. 3.1. Plan view of study area 43
Fig. 3.2. Strata cross section with tunnels and housing 45
Fig. 3.3. Surveying result of cross section STA. 1+480 with tunnels 45
Fig. 3.4. Measuring locations at the site during blasting 47
Fig. 3.5. Explosion mechanism and blast load 50
Fig. 5.1. Computational model of blasting 62
Fig. 5.2. Time series of blast loading 63
Fig. 5.3. Time series of blast-induced vibration velocity propagation 65
Fig. 5.4. Time series of blast-induced peak particle velocity at house A with permissible criteria 67
Fig. 5.5. Blast-induced maximum ground displacement at 0.03 sec 69
Fig. 5.6. Time series of blast-induced ground displacement at house A 70
Fig. 5.7. Measured sound and particle peak velocity during 1st blast at No. 1[이미지참조] 71
Fig. 5.8. Measured sound and particle peak velocity during 1st blast at No. 2[이미지참조] 72
Fig. 5.9. Measured sound and particle peak velocity during 1st blast at No. 3[이미지참조] 73
Fig. 5.10. Measured sound and particle peak velocity during 2nd blast at No. 1[이미지참조] 74
Fig. 5.11. Measured sound and particle peak velocity during 2nd blast at No. 3[이미지참조] 75
Fig. 5.12. Measured particle peak velocity with frequency during 1st blast at No. 2[이미지참조] 76