Fig. 1. Example of debris flows with rock
Fig. 2. Type of permeable debris control dam
Fig. 3. Design force estimation for eco-pillar debris barrier
Fig. 4. Overview of eco-pillar debris barrier
Fig. 5. Reinforcement drawing of column with hollowed track section
Fig. 6. Stress-strain relationship by uniaxial loading in tension and compression
Fig. 7. Rebar and concrete model by solid element
Fig. 8. Impact analysis model according to rock model
Fig. 9. Stresses in concrete pillar (0 deg.)
Fig. 10. Stresses in concrete pillar (45 deg.)
Fig. 11. Stresses in concrete pillar according to impact position (0 deg)
Fig. 12. Stresses in rebar according to impact position (0 deg)
Fig. 13. Stresses in rebar according to impact position (45 deg)
Fig. 14. Horizontal displacement at impact position (0 deg)
Fig. 15. Horizontal displacement at impact position (45 deg)
Fig. 16. Deformed shape (0 deg)
Fig. 17. Deformed shape (45 deg)
Fig. 18. Concrete tensile damage (0 deg)
Fig. 19. Concrete tensile damage (45 deg)
Fig. 20. Damage ratio according to diameter of rock (0 deg)
Fig. 21. Damage ratio according to diameter of rock (45 deg)
Table 1. Material properties of granite [11]
Table 2. Test model of ETAG 27 [12]
Table 3. Weight and impact energy of Rock model
참고문헌
- Korea Forest Service, Unforeseen Flood of Valley will be predictable, Press release, January 2016.
- Korea Forest Service, Debris Control Dam, Establishment Completion contribute to accident prevention program Before rainy wet season, Press release, June 2010.
- G. B. Koo, M. S. Kim, C. Kim, S. M. Yu, "A Study on Type Classification of Erosion Control Dam using Ecosystem Connectivity", Journal of Korean Forest Society, Vol.100, No.3, pp.484, 2011.
- H. G. Kim, "Development of Precast Concrete Method for Eco-Pillar Debris Barrier with Hollow Cross-Section", Journal of the Korea Academia-Industrial cooperation Society, Vol.19, No.3, pp.542-552, March 2018. DOI: http://doi.org/10.5762/KAIS.2018.19.3.542
- Korea Forest Service, Debris Control Dam, Establishment Completion contribute to accident prevention program Before rainy wet season, Press release, June 2010.
- Korea Concrete Institute, Explanation of concrete structure standard, 2012.
- M. U. Hanif, Z. Ibrahi,m, K. Ghaedi, "Finite Element Simulation of Damage In RC Beams", Journal of Civil Engineering, Science and Technology, Vol.9, No.1, pp.50-57, 2018. DOI: http://doi.org/10.33736/jcest.883.2018
- ABAQUS, Inc., ABAQUS/Standard User's Manual-Version 6.2., Pawtucket, R.I., 2001.
- W. Y. Kim, S. R. Lee, K. S. Kim, B. G. Chae, "Landslide Types and Susceptibilities Related to Geomorphic Characteristics", Korean Society of Engineering Geology, Vol.8, No.2, pp.115-132, 1998.
- W. I. Choi, S. G. Lee, B. K. Lee, S. J. Jang, "A Study of Vulnerability of Structure by Debris Flow", Korean Society of Hazard Mitigation, Vol.12, No.3, pp.141-146, June. 2012.
- H. S. Jang, J. T. Jeong, B. A. Jang. "Experimental Study for determining the Basic Friction Angle of the Rock Joint", The Journal of Engineering Geology, Vol.26, No.4, pp.447-460, 2016. DOI: http://doi.org/10.9720/kseg.2016.4.447
- K. J. Han, B. G. Moon, M. G. Ko, K. D. Kim, "Performance Assessment of Rockfall Protection Fences for the Rockfall Energy of 100 kJ Using ETAG 27", Korean Society of Hazard Mitigation, Vol.16, No.4, pp.247-259, 2016. DOI: http://doi.org/10.9798/KOSHAM.2016.16.2.247