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유종식,김철수,고상우,강신중 한국기계기술학회 2015 한국기계기술학회지 Vol.17 No.4
This study developed a portable extinguishing equipment that can extinguish A-class, B-class fire. This equipment is made of Water Mist Gun, controlling board, decelerator, pump, engine, and etc,. This equipment is formed mist water when pressurized water with high pressure flows through a radial shape nozzle. As a result of several efficiency tests, it is developed nozzle and equipment that are not clogged, and improved the extinguishing efficiency. This developed equipment indicated a excellent effect of initial extinguishment of fire in a vulnerable area where it is difficult to approach such as temple, and traditional market.
유종식,김철수,고상우,강신중 한국기계기술학회 2015 한국기계기술학회지 Vol.17 No.4
This study developed a portable extinguishing equipment that can extinguish A-class, B-class fire. This equipment is made of Water Mist Gun, controlling board, decelerator, pump, engine, and etc,. This equipment is formed mist water when pressurized water with high pressure flows through a radial shape nozzle. As a result of several efficiency tests, it is developed nozzle and equipment that are not clogged, and improved the extinguishing efficiency. This developed equipment indicated a excellent effect of initial extinguishment of fire in a vulnerable area where it is difficult to approach such as temple, and traditional market.
김유아(Kim, Yu A),고상우(Ko, Sang Woo),김진국(Kim, Jin-Kook) 한국콘크리트학회 2021 한국콘크리트학회 학술대회 논문집 Vol.33 No.2
이 연구에서는 크리프 손실에 따라 변화하는 콘크리트 응력을 고려한 원형 CFT 강관의 장기거동 특성을 분석하였다. 기존 연구결과들을 기반으로 CFT 내 콘크리트의 크리프거동 특성을 고려하여 크리프계수를 설정하고, AEMM(Age-adjusted Effective Modulus Method), SSM(Step-by-Step Method) 방식에 따라 장기손실을 산정하였다. 각 크리프 손실평가 방식에 따른 도출결과를 비교하여 CFT의 응력 재분배 영향을 확인하고 장기손실평가를 위한 효과적인 방법을 찾고자 한다. This study was conducted to the long-term behavioral characteristics of a CFT considering the concrete stress changing according to the creep loss. Based on the existing research results, the creep coefficient was set in consideration of the creep behavior characteristics of concrete in CFT, and Long-term loss was calculated according to AEMM (Age-adjusted Effective Modulus Method), and SSM (Step-by-Step Method) methods. By comparing the results obtained according to each creep loss evaluation method, the effect of stress redistribution of CFT is confirmed and an effective method for long-term loss evaluation is found.