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정주홍,윤광식,최수명,윤석군,고영배,김영택,Jeong, Ju-Hong,Yoon, Kwang-Sik,Choi, Soo-Myung,Yoon,, Suk-Gun,Go, Young-Bae,Kim, Young-Taek 한국관개배수위원회 2010 한국관개배수논문집 Vol.17 No.2
Tidal land reclamation provided water resources and land for agriculture and contributed stable crop production. However, climate change by global warming disrupts the hydrologic circulatory system of the earth resulting in sea level rise and more frequent flood for reclaimed arable land. Recently, Suyu reclaimed paddy field in Jindo-gun experienced prolonged inundation after heavy rainfall and there is a growing risk of flood damage. Onsite survey and flood analysis using GATE_Pro model of Korea Rural Corporation were conducted to investigate causes of flooding. To perform the analysis, input data such as inflow hydrograph, the lowest elevation of paddy field, neap tide level, management level of Gunnae estuary lake at the time of the flood were collected. Flood analysis confirmed that current drainage facilities are not enough to prevent 20year return period flood. The result of analysis showed flooding more than 24hours. Therefore, flood mitigation alternatives such as sluice gate expansion, installation drainage pumping station, refill paddy land, and catch canal were studied. Replacing drainage culvert of Suyu dike to sluice gate and installing drainage pumping station at the Gunne lake were identified as an effective flood control measures. Furthermore, TM/TC (SCADA) system and expert for gate management are required for the better management of drainage for estuary dam and flood mitigation.
도넛형 이방향 중공슬래브의 내화성능에 관한 실험적 연구
정주홍(Chung, Joo-Hong),조해정(Cho, Hae-Jeong),이승창(Lee, Seung-Chang),최현기(Choi, Hyun-Ki),최창식(Choi, Chang-Sik) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.12
The biaxial hollow slabs are decreased self-weight of slab and retained structural performance similar with general reinforced concrete slab. The structural performance of this system was evaluated through various study of biaxial hollow slab. But, for actual application of biaxial hollow slab, this system is important to evaluation for fire resistance performance as well as structural performance. However, there is a lack of research on fire endurance assessment of biaxial hollow slab. Generally, the reinforced concrete slab has great fire resistance performance caused by excellent thermal material properties of concrete. But, In case of biaxial hollow slab will be expected to show different temperature distribution and fire endurance performance compare to reinforced concrete slab. Because hollow slab has internal void space that occurs decreasing regenerative effect of concrete and formation of internal air layer. Therefore, this paper was performed the fire test of biaxial hollow slab with donut type shape. and evaluated fire resistance performance of donut type biaxial hollow slab using Fire resistance design of Euro Code2. The result of this study, the thickness of slab affects the load bearing of fire resistance and temperature of unheated side. Also distance between hollow shape and steel is significant influence factor on the fire resistance of donut type biaxial hollow slab.