Wind Fragility for Urban Street Tree in Korea
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
In this paper, the analytical method to derive wind fragility for urban street tree in Korea was shown. Monte Carlo Simulation method was used to determine the probability of failure for urban street tree. This probability result was used to determine wind fragility parameters for four types of tree based on the study of street tree species in urban area in Daegu, Korea. Wind fragility for street tree was presented in terms of median capacity and standard deviation of the natural logarithm of the capacity. Results showed that the dominant factor affecting the probability of failure of tree under wind load was their diameter. Moreover, amongst the four types of tree chosen, the tree with height 7m and diameter 35cm had the lowest probability of failure under wind loading, whereas the tree with height 8m and diameter 30cm could resist the least wind loading. The median failure wind speed for urban street tree with height 7m were 43.8m/s and 50.6m/s for diameter 30cm and 35cm, respectively. Also, for tree with height 8m, their median failure wind speeds were 38.7m/s and 45.4m/s for tree with diameter 30cm and 35cm, respectively.
Abstract
In this paper, the analytical method to derive wind fragility for urban street tree in Korea was shown. Monte Carlo Simulation method was used to determine the probability of failure for urban street tree. This probability result was used to determine wind fragility parameters for four types of tree based on the study of street tree species in urban area in Daegu, Korea. Wind fragility for street tree was presented in terms of median capacity and standard deviation of the natural logarithm of the capacity. Results showed that the dominant factor affecting the probability of failure of tree under wind load was their diameter. Moreover, amongst the four types of tree chosen, the tree with height 7m and diameter 35cm had the lowest probability of failure under wind loading, whereas the tree with height 8m and diameter 30cm could resist the least wind loading. The median failure wind speed for urban street tree with height 7m were 43.8m/s and 50.6m/s for diameter 30cm and 35cm, respectively. Also, for tree with height 8m, their median failure wind speeds were 38.7m/s and 45.4m/s for tree with diameter 30cm and 35cm, respectively.
참고문헌 (21)
- American Society of Civil Engineers, "Minimum design loads for buildings and other structures", ~ (2010)
- Donald Aylor, "Noise Reduction by Vegetation and Ground", The Journal of the Acoustical Society of America, 51(1B), pp.197~205 (1972), Acoustical Society of America (ASA)[DOI]
- Anna Chiesura, "The role of urban parks for the sustainable city", Landscape and Urban Planning, 68(1), pp.129~138 (2004), Elsevier BV[DOI]
- Bruce R. Ellingwood, "Fragility Assessment of Light-Frame Wood Construction Subjected to Wind and Earthquake Hazards", Journal of Structural Engineering, 130(12), pp.1921~1930 (2004), American Society of Civil Engineers (ASCE)[DOI]
- Bruce R. Ellingwood, "Wind Load Statistics for Probability-Based Structural Design", Journal of Structural Engineering, 125(4), pp.453~463 (1999), American Society of Civil Engineers (ASCE)[DOI]
- Ham, H, "Development of typhoon fragility for industrial buildings", Proceeding of the 7th Asia-Pacific Conference on Wind Engineering (2009)
- 임동균, "현장 인발시험을 통한 수목의 한계 전도모멘트 검토", 대한토목학회 논문집B, 31(4), pp.323~332 (2011), 대한토목학회
- Sungsu Lee, "Fragility Assessment for Cladding of Industrial Buildings Subjected to Extreme Wind", Journal of Asian Architecture and Building Engineering, 12(1), pp.65~72 (2018), Informa UK Limited[DOI]
- Miyeon Lee, "Estimating Damage Costs from Natural Disasters in Korea", Natural Hazards Review, 18(4), pp.04017016~ (2017), American Society of Civil Engineers (ASCE)[DOI]
- Kyung Ho Lee, "Fragility assessment for roof sheathing failure in high wind regions", Engineering Structures, 27(6), pp.857~868 (2005), Elsevier BV[DOI]
- Kyung Ho Lee, "Fragility curves for woodframe structures subjected to lateral wind loads", Wind and Structures, An International Journal, 9(3), pp.217~230 (2006), 한국풍공학회
- McPherson, EG, "The ecological city: preserving and restoring urban biodiversity", pp.151~171 (1994), University of Massachusetts Press
- Neville, LR, "Urban watershed management: The role of vegetation", Ph.D., pp.1996
- Nowak, DJ, "Air pollution removal by urban trees and shrubs in the United States", Urban forestry & urban greening, 4(3-4), pp.115~123 (1994)[DOI]
- Nowak, DJ, "The effects of urban forests on the physical environment, Urban Forests and trees", COST Action E, 12, pp.22~42 (2002)
- Porter, K, "Beginner’s guide to fragility, vulnerability, and risk", pp.2015
- Sagi, PV, "Foundation Effects of Trees Under Wind Loads", Ph.D., pp.2016
- Sim, V, "Wind Fragility for Sign Structure in Korea with Chemical Anchor Connection", MATEC Web of Conferences, 186, pp.02008~ (2018)
- Typhoon Committee Operational Manual 2015 (Report), "Typhoon Committee", World Meteorological Organization, ~ (2015)
- Peter J. Vickery, "HAZUS-MH Hurricane Model Methodology. II: Damage and Loss Estimation", Natural Hazards Review, 7(2), pp.94~103 (2006), American Society of Civil Engineers (ASCE)[DOI]
- Tae Kyung Yoon, "Allometric equations for estimating the aboveground volume of five common urban street tree species in Daegu, Korea", Urban Forestry & Urban Greening, 12(3), pp.344~349 (2013), Elsevier BV[DOI]