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Structural Improvement of the Shading Structures against Meteorological Disasters in Ginseng Fields  

남상운 (충남대학교 농업생명과학대학)
Publication Information
Magazine of the Korean Society of Agricultural Engineers / v.45, no.4, 2003 , pp. 98-106 More about this Journal
Abstract
In order to set up structural improvement strategy against meteorological disasters of the shading structures in ginseng fields, structural safety analyses as well as some case studies of structural damage patterns were carried out. According to the results of structural safety analysis, allowable safe snow depth for type B(wood frame with single span) was 25.9 cm, and those for type A(wood frame with multi span) and type C and D (steel frame with multi span) were 17.6 cm, 25.8 cm, and 20.0 cm respectively. So types of shading structures should be selected according to the regional design snow depth. An experiential example study on meteorological disasters indicated that a strong wind damage was experienced once every 20 years, and a heavy snow damage once every 9.5 years. The most serious disasters were caused by heavy snow and it was found that a half break and complete collapse of structures were experienced by about 70% of snow damage. In addition to maintenance, repair and reinforcement, it is also recommended that improved model of shading structures for ginseng cultivation should be developed as a long term countermeasures against meteorological disasters.
Keywords
Shading structures; Ginseng field; Structural safety test; Heavy snow damage; Meteorological disaster;
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