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합성용 데크플레이트를 이용한 합성슬래브의 전단부착강도에 관한 연구
김형준(Hyung Joon Kim),허충(Chung Hui),김진호(Jin Ho Kim),윤명호(Myung Ho Yoon),이명재(Myung Jae Lee),문태섭(Tae Sup Moon),김규석(Gyu Suk Kim),김덕재(Duck Jae Kim),김동규(Dong Kyu Kim) 한국강구조학회 1997 韓國鋼構造學會誌 Vol.9 No.3
The objective of this study is to investigate the longitudinal shear strength of the composite slabs with the composite metal deckplate. The experiment was done with composite slabs which use the composite deckpalte. This paper compares the most important design methods for composite slabs - the m+k method and the partial connection theory. The partial connection theory has been established by Helmut Bode. 12 specimens(SPI) were tested for the study. And the informations of 2 specimens were used from a previous test. Parameters in the study are the thickness of deckplate(1.2, 1.6㎜), and shear span(L/7, L/3. L/4), shapes of deck plate etc. Based on experimental and analytical study, the longitudinal shear strength in the shear span were developed in this study. The modified formula would be consisted for the longitudinal shear strength.
신형상의 데크플레이트를 이용한 합성슬래브의 구조적거동에 관한 연구
김창우(Chang Woo Kim),최성모(Sung Mo Choi),엄철환(Chul Hwan Eum),강도안(Do An Kang),최완철(Oan Choi Chul),문태섭(Tae Sup Moon),김규석(Gyu Suk Kim),김덕재(Duck Jae Kim),김동규(Dong Kyu Kim) 한국강구조학회 1997 韓國鋼構造學會誌 Vol.9 No.3
Cold-formed deck sections are used in many composite floor slab applications wherein the steel deck serves not only as the form for the concrete during construction but also as the principal tensile reinforcement for the bottom fiber of the composite slab. This paper provides the results of an experimental study performed for the composite slabs with the new shaped deck plates with the locking ribs, the dove tails, and the powerful embossment, which are the mechanical means to improve positive interlocking effect between the deck and the concrete. A total of 28 specimens are tested to clarify the composite effects between the concrete and metal deck plate. Important parameters in this study are the span length. the thickness of the deck plate, support condition, and whether shear studs are placed at each support or not. The test results are summarized for the maximum load and failure behavior for the specimens.
김종락(Jong Rak Kim),김동규(Dong Kyu Kim),김규석(Gyu Suk Kim),문태섭(Tae Sup Moon),박양희(Yang Hee Park) 한국강구조학회 1997 韓國鋼構造學會誌 Vol.9 No.3
As the use of thick plates increase, the thoughness of plates becomes an important factor in welding. The thoughness is relative to impact characteristics and chemical property in welding. A TMCP plate has been improved on chemical composition and welding properties by several operation. Therefor it highly resists to low temperature cracking compared with other plates. The purpose of this paper is to identify the chemical requirement and the impact energy on welded metals in low temperature. As a result. TMCP plates have shown stable values of the composition parameter and carbon equivalents where ¼ section of plates according to Korean Standards. It also shows the impact energy is much higher than other rolled steels for welded structure in low temperature.
이명재(Myung Jae Lee),김종락(Jong Rak Kim),김덕재(Duck Jae Kim),김규석(Gyu Suk Kim),문태섭(Tae Sup Moon) 한국강구조학회 1997 韓國鋼構造學會誌 Vol.9 No.3
This paper shows test results of welding properties and hardness of the welded areas, made of Thermo Mechanical Control Process(TMCP) plate. A tendon test across the weld and a bend test for ductility welds were performed for the TMCP. Four types welding method are applied FCAW(Flux Cored Arc Welding). GMAW(Gas metal Arc Welding) SAW(Submerged Arc Welding). ESW(Electro Slag Welding) Tests result show that TMCP plates have satisfied yield strength, ultimite strength according to Korean Standards and hardness results also meet to KS, even though an enormous welding heat influence to welded areas.
하반신 마비환자를 위한 동력보행보조기의 퍼지제어 기법 개발
강성재(Sung Jae Kang),류제청(Jei Cheong Ryu),김규석(Gyu Suk Kim),김영호(Young Ho Kim),문무성(Mu Seong Mun) 제어로봇시스템학회 2009 제어·로봇·시스템학회 논문지 Vol.15 No.2
In this study, we wolud be developed the fuzzy controlled PGO that controlled the flexion and the extension of each PGO’S hip joint using the bio-signal and FSR sensor. The PGO driving system is to couple the right and left sides of the orthosis by specially designed hip joints and pelvic section. This driving system consists of the orthosis, sensor, control system. An air supply system of muscle is composed of an air compressor, 2-way solenoid valve (MAC, USA), accumulator, pressure sensor. Role of this system provide air muscle with the compressed air at hip joint constantly. According to output signal of EMG sensor and foot sensor, air muscles and assists the flexion of hip joint during PGO gait. As a results, the maximum hip flexion angles of RGO’s gait and PGO’s gait were about 16° and 57° respectively. The maximum angle of flexion/extention in hip joint of the patients during RGO’s gait are smaller than normal gait, because of the step length of them shoes a little bit. But maximum angle of flexion/extention in hip joint of the patients during PGO’s gait are larger than normal gait.