http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
SC(강판-콘크리트)구조 브라켓 접합부 거동에 관한 연구
김우범,김강식,Kim, Woo Bum,Kim, Kang Sik 한국강구조학회 2004 韓國鋼構造學會 論文集 Vol.16 No.3
본 논문에서는 강판-콘크리트 벽체구조에 부착되는 기기를 지지하기 위하여 설치되는 지지대와 벽채와의 접합 성능을 파악하기 위하여 구조실험 및 유한요소해석을 수행하였다. 구조실험은 9개의 시험체를 제작하여 파괴모드 및 최대내력을 파악하였으며 유한요소해석모델을 작성하여 이를 실험결과와 비교 검증한 후 강판두께, 스터드 볼트 간격, 지지대의 위치 및 크기 등의 영향인자가 벽체 접합부의 거동 및 내력에 미치는 변화를 살펴보았다. 해석 시험체의 하중-변형의 관계로부터 시험체의 항복내력 및 최대내력을 정의 하였으며 향후 항복선 해석을 위한 토대를 마련하였다. An experimental and analytical study on the behavior of the wall-support joint in SC(steel plate-concrete) structure was performed. Nine full-scale specimens were tested with a horizontal monotonic load, all acting in the same plane, causing a uni-axial moment on the SC structure's wall-support beam joint. The main focus is to examine thenonlinear behavior and ultimate strength of the SC wall-support joint. The effects of parameters, such aslocation of support, thickness of the steel plate, and size of support, were studied. The yield strength and ultimate strength of the plate-concrete wall was defined by examining the load-deflection relationship, showing the tension membrane action.
김형국,김우범,김원기,Kim, Hyeong Gook,Kim, Woo Bum,Kim, Won Ki 한국강구조학회 2008 韓國鋼構造學會 論文集 Vol.20 No.2
SC 구조는 시공 및 제작성이 우수하여 최근 국내외 원자력 발전소 건설에 적용되고 있는 구조이다. SC 구조의 벽 -바닥 접합부가 갖는 전단력 전달기구를 확인하기 위하여 4개의 실험체에 대하여 실험을 수행하고, 접합부의 거동특성을 분석하였다. 이를 바탕으로 접합부의 전단내력 평가를 위한 해석적 연구를 수행하였다. 그 결과, 실험 결과와 해석결과 간의 근접성을 확인하였고, 접합부의 내력 및 파괴모드를 도출하였다. 그리고 전단플레이트의 두께와 벽면 마찰력의 변화가 접합부 전단내력에 미치는 영향을 파악한 결과, 제안한 접합부 내력식이 보수적인 값을 제시하고 있음을 확인하였다. Steel plate-concrete (SC) structure has recently been used in nuclear power structure because of its construction efficiency. In this study, experimental and analytical study to investigate the behavior of the SC structure's wall slab connection was carried out. Experiments were performed for typical SC and RC connections in order to examine the basic difference between each structure. Finite element analysis was performed and the result of the analysis was found to closely reflect the experimental result. By varying the thickness of the shear plate and friction coefficients and the distance of applied load from the wall, the influence of the parameters on the joint strength and failure modes were examined. Finally, it was confirmed that the joint strength formula proposed in th this research gives conservative results.
손상된 관형부재의 모멘트-곡률 관계식 유도에 관한 연구
김우범(Woo Bum Kim) 한국강구조학회 1993 韓國鋼構造學會誌 Vol.5 No.4
A method for analyzing the behavior and strength of damaged tubular segment was developed. In developing a reliable and efficient analytical method, finite element analysis on a dented segment was made, and the m-p-φ relationship for each specific dent geometry was obtained. Then, a database of the relationship of various dent geometries was created. To generalize the relationship between M, P, φ, D/t, d/D, and σ_y, regression analysis was performed. Then, the functional relationship between M(moment) and other parameters was determined. Through the reduction process, the end moment of the dented segment was expressed in terms of axial force and rotation only. This pre-determined M-P-θ relationship are used in the numerical integration of the member. Separate comparisons between analytical and experimental results were made for the M-P-θ curves of the dented segment.
김우범(Woo Bum Kim),임경택(Kyung Teak Lim),조용기(Yong Ki Cho) 한국강구조학회 1995 韓國鋼構造學會誌 Vol.7 No.2
An experimental study was performed to investigate the behavior and strength of the connection of tubular member subjected to eccentric loading. To measure the ultimate strength of the connection subjected vertical and lateral forces, testing bed was equipped with three directional loading unit. Because of limitations in loading capacity, the specimens were fabricated with ⅓ scale of full size. To investigate material properties of specimens, tensile coupon tests and stub column tests were also carried out. Primary interest here are the ultimate strength of connections having eccentricity. From several reports and test results, main reasons of local buckling and local plastic deformation of tubular members were reviewed and the influence of degree of eccentricity on the ultimate strength was investigated. Consideration was also given to the effect of D/t raito of a tube on the local buckling strength.
김우범,이영정,김갑순,정수영,Kim, Woo Bum,Lee, Young Jung,Kim, Kap Sun,Chung, Soo Young 한국강구조학회 2001 韓國鋼構造學會 論文集 Vol.13 No.6
리브로 보강된 가셋트-강관 접합부의 거동은 매우 복잡한 양상을 나타내므로 이론적인 방법으로는 극한강도평가가 불가능하다. 그러므로 본 연구에서는 리브로 보강된 K형 가셋트-강관접합부의 유한요소 해석결과를 실험결과와 비교 분석하여 그 타당성을 입증하고, 유한요소해석에 의한 접합부의 거동을 파악하고 극한강도를 추정하였다. 또한 횡력비, 편심률, 가셋트 길이를 고려한 유한요소해석으로부터 보강효과를 파악하였으며, 보강플레이트의 길이, 높이, 두께의 변화에 따른 해석을 수행하여 합리적인 보강방법을 제안하였다. It is almost impossible to evaluate the ultimate strength theoretically, because the behavior of Gusset-Tube connection stiffened with rib-plate is considerably complicate. Therefore in this study a finite element model of gusset-tube connection stiffened with rib-plate was established. The validity of finite element analysis was examined through comparing with previous experimental result and the behavior and strength of the connection was examined. From the parametric study considering lateral force ratio, eccentricity, gusset length based on finite element model, the stiffened effect was estimated and stiffening method was proposed.
김우범(Woo Bum Kim) 한국강구조학회 1995 韓國鋼構造學會誌 Vol.7 No.2
A simple "engineering" method was formulated for computing the ultimate strength of end restrained tubular column damaged by a dent or out-of-straightness. The method establishes the load-shortening response of damaged members for various end restraints. The load-shortening response was obtained through the numerical integration technique using the moment-thrust-rotation and shortening-thrust-rotation relationship based on the previous research. To investigate the effect of influential parameters on column strength, such as diameter-thickness ratio, depth of dent and end restraints, a parametric study was performed efficiently by the proposed method. Also column curves of a damaged member were established for the various end restraints and an effective length factor of damaged columns was introduced. The results of the proposed method were compared with experimental results for the limited cases.