- 권한신청
- P-ISSN2233-8292
- E-ISSN2287-4747
- KCI
ISSN : 2233-8292
비선형 수치모델링을 이용한미고결 지반 저토피 터널의 변형해석
Deformation analysis of shallow tunneling with unconsolidated soilusing nonlinear numerical modeling
김영수 (경북대학교)
유지형 (경일대학교)
정윤영 ((주)청석엔지니어링)
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Abstract
The estimation of surface settlement, ground behavior and tunnel displacement are the main factors in urban tunnel design with shallow depth and unconsolidated soil. On deformation analysis of shallow tunnel, it is important to identify possible deformation mechanism of shear bands developing from tunnel shoulder to the ground surface. This paper investigated the effects of key design parameter affecting deformation behavior by numerical analysis using nonlinear model incorporating the reduction of shear stiffness and strength parameters with the increment of the maximum shear strain after the initiation of plastic yielding. Numerical parametric studies are carried out to consider the reduction of shear stiffness and strength parameters, horizontal stress ratio, cohesion and shotcrete thickness.
- keywords
- 비선형 수치해석, 변형거동, 터널, 미고결 지반, Nonlinear Numerical analysis, deformation behavior, tunnel, unconsolidated soil, Nonlinear Numerical analysis, deformation behavior, tunnel, unconsolidated soil
참고문헌
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