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http://dx.doi.org/10.12652/Ksce.2011.31.4B.323

Investigation of Critical Breaking Moment through Field Tree-Pulling Test  

Im, Dongkyun (삼성물산(주) 건설부문)
Kim, Won (한국건설기술연구원)
Choi, Sung-Uk (연세대학교 공과대학 토목환경공학과)
Kim, Yongjeon (한국건설기술연구원)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.31, no.4B, 2011 , pp. 323-332 More about this Journal
Abstract
In order to properly manage trees in rivers, the impact of trees on flooding and their ecological characteristics need to be considered and a plan needs to be established. The hydraulic impact by trees is reduction of conveyance and hydraulic structure's function due to overturn arising from flow force. A field pulling test was carried out to measure the critical resistance force for when trees break in order to discover the level of resistance that trees inside the river have to external force. The relevant factors for discovering the critical breaking moment for trees include tree species, which determines the external characteristic of trees, tree diameter at breast height, and tree height. In this study, the correlation between critical breaking moment and diameter at breast height were used. The tree's limit or critical breaking moment was tested using 100 shrubs and tall trees with a breast height diameter of 4.9 to 32.8 cm. It was difficult to derive a correlation between diameter at breast height and critical breaking moment when shrubs and tall trees were being considered together, but when only tall trees were considered, a consistent correlation was found between them.
Keywords
tree; conveyance; overturn; critical breaking moment; pulling test;
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  • Reference
1 건설교통부(1997) 하천내 수목의 현황 및 관리방안에 관한 조사 연구.
2 건설교통부(1998) 하천구역내 나무심기 및 관리에 관한 기준, 건설교통부 하계 58170-339.
3 건설교통부(2007) 하천에서 나무심기 및 관리에 관한 기준, 건설교통부 하천환경팀-1056.
4 국토해양부(2010) 하천점용허가 세부기준(국토해양부 고시 제2010-105호).
5 김지성, 김원, 이혜은, 김은미(2009a) 수목에 의한 흐름저항 평가를 위한 1차원 상류이송 음해기법, 한국수자원학회 2009년도 학술대회논문집, 한국수자원학회, pp. 822-826.
6 김지성, 김극수, 김원, 노준우, 김호준(2009b) 소양강댐 하류구간자생 수목군에 의한 흐름저항 영향 평가, 대한토목학회 2009년도 학술대회논문집, 대한토목학회, pp. 756-759.
7 이진원, 유대영(1997) 하천 내 수목의 내력 시험, 한국수자원학회논문집, 한국수자원학회, 제30권, 제3호, pp. 211-223.
8 환경부(2010) 전국자연환경조사, 환경지리정보서비스(http://egis.me.go.kr).
9 建設省(1998) 河川域における樹木の伐採.植樹基準.
10 リバフロント整備センタ(1999) 河川における樹木管理の手引き.
11 Achim, A. Ruel, J.C., Gardiner, B.A., Laflamme, G., and Meunier, S. (2005) Modelling the vulnerability of balsam fir forests to wind damage. Forest Ecology and Management, Vol. 204, pp. 35-50.
12 Cappiella, K., Schueler, T., and Wright T. (2005) Urban watershed forestry manual. United States Department of Agriculture, Forest Service, NA-TP-04-05.
13 Darby, S.E. and Thorne, C.R. (1996) Predicting stage-discharge curves in channels with bank vegetation, Journal of Hydraulic Engineering, Vol. 122(10), pp. 583-586.   DOI   ScienceOn
14 Helmio, T. (2005) Unsteady 1D flow model of a river with partly vegetated floodplains -application to the Rhine River, Environmental Modelling and Software, Vol. 20, pp. 361-375.   DOI   ScienceOn
15 Huang, B., Lai, G., Qin, J., and Lin, S. (2002) Hydraulics of compound channel with vegetated floodplains, Journal of Hydrodynamics, Vol. 14(1), pp. 23-28.
16 Kang, H. and Choi, S.U. (2004) 3D numerical simulation of compond open channel flows with vegetated floodplains by Reynolds stress model, 2004 World Water and Environmental Resources Congress, Salt Lake City, pp. 1-10.
17 Kouwen, N. and Fathi-Morgan, M. (2000) Friction factors for coniferous trees along rivers, Journal of Hydraulic Engineering, Vol. 126(10), pp. 732-740.   DOI   ScienceOn
18 Melville, B.W., and Dongol, D.M. (1992) Bridge pier scour with debris accumulation, Journal of Hydraulic Engineering, Vol. 118(9), pp. 1306-1310.   DOI
19 Moore, J.R. (2000) Difference in maximum resistive bending moments of Pinus radiata trees grown on a range of soil types, Forest Ecology and Management, Vol. 135, pp. 63-71.   DOI   ScienceOn
20 Natinal River Authority (1994) The new rivers and wildlife handbook.
21 Peltola, H., Kellomaki, S., Hassinen, A., and Guanander, M. (2000) Mechanical stability of Scots pine, Norway spruce and birch: an analysis of tree-pulling experiments in Finland, Forest Ecology and Management, Vol. 135, pp. 143-153.   DOI
22 Tanaka N., Sasaki Y., and Mowjood M. (2006) Effects of sand dune and vegetation in the coastal area of Sri Lanka at the Indian Ocean tsunami. Namsik P et al (eds) Advances in Geosciences, Vol. 6, World Scientific, Singapore.
23 Wyzga, B. (2001) Impact of the channelization-induced incision of the Skawa and Wisloka Rivers, southern Poland, on the conditions of overbank deposition, Regulated Rivers: Research & Management, Vol. 17, pp. 85-100.   DOI   ScienceOn
24 Yang, K., Cao, S., and Knight, D.W. (2007) Flow patterns in compound channels with vegetated floodplains, Journal of Hydraulic Engineering, Vol. 133(2), pp. 148-159.   DOI   ScienceOn