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접합부 형상변화에 따른 경ㄷ-형강 보의 거동에 관한 연구
박금성(Park Keum-Sung),이상섭(Lee Sang-Sup),임석호(Lim Seok-Ho),배규웅(Bae Kyu-Woong) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.1
The object of this paper is to evaluate on behavior the experimentally of beam in a welded connections for unit modular steel frame with the hollow structural steel section to light steel section. The connections carried out test on the connection shapes bracket-type and diaphragm-type to consideration which the connections for unit modular steel frame was capacity, deformation and failure mode. Test of results, the connections strength decided to beam of the lateral buckling strength in light steel section regardless of connection shapes and connection failure. The strength & stiffness for connection increase proportionally as the light steel section beam section sizes, and the more bracket-type than diaphragm-type as connection shapes. The results from theory of lateral buckling are compared to the experimental results. The ratio of experimental results to theory value is 0.84~1.00 in the case of bracket-type and diaphragm-type of 0.83, indicating an accurate and safe estimation.
박금성(Park, Keum-Sung),이상섭(Lee, Sang-Sup),홍성엽(Hong, Seong-Yup),허병욱(Heo, Byung-Wook) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.10
The object of this paper is to evaluate on lateral resistance performance of lateral cyclic test for unit modular steel frame with the cold-formed the hollow structural steel sections column and light weight ㄷ-sections steel beam. Major variables include bracket-type and C-type is shaped joint. Lateral resistance in order to evaluate the performance of the unit frame having first and second floors by making full scale framing experiments were carried out. This study will be evaluated about stiffness and strength variations by form of joints, deformation shapes and failure modes through the test. Comparisons on the test of results in the story drift elastic limited ratio(0.01rad), the unit frame with joints bracket-shape showed highly lateral yielding load to 3~12%, peak load to 30~35% and lateral stiffness to 7~12%. The stiffness and strength of 2nd story unit frame were estimated some low at the same position. For the security of lateral structure safety regardless of joints shape and scale with the unit frame modular system that was determined to a fixed connector additional in light weight ㄷ-shape beams of between column-to-column with long-direction.
인장웨브재 연결 플레이트를 갖는 각형강관 갭 N형 접합부의 거동에 관한 연구
박금성(Park, Keum-Sung),배규웅(Bae, Kyu-Woong),최윤철(Choi, Yun-Cheul) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.12
This paper’s objective is to evaluate the experimental behavior of gap N-joints made of cold-formed, square, hollow steel sections, with a connection plate as a tension member. The principal parameters for testing included the ratio of chord width to thickness, the ratio of brace width to chord width, eccentric ratio, the shape of the compression member, the branch angle, and the stiffening plate of the chord flange. The strength and failure mode were examined through the test for the gap N-joint, consisting of several parameters. Based on the results of the test, the gap N-joints were determined according to the capacity preceding the displacement of the tension, regardless of the width ratio, and the split failure mode-connected surface for a chord in joints. The strength of the gap N-joints increased proportionally as the 2γ(B/T) ratio decreased, and as the width ratio(β) of branch to chord increased. Particularly, 2γ(B/T) decreased as the capacity of gap N-joint increased. The results of the test were summarized for the capacity, initial stiffness, ductility, and change of the failure mode of each gap N-joint.
각형강관 트러스 T형 접합부의 내력 및 변형성상에 관한 실험적 연구 (1)
박금성(Keum Sung Park),배규웅(Kyu Woong Bae),오영석(Young Suk Oh),문태섭(Tae Sup Moon) 한국강구조학회 1996 韓國鋼構造學會誌 Vol.8 No.2
The purpose of this paper is to investigate experimentally the strength and deformation of T-joints to evaluate the structural behavior of truss connection consisted in square hollow steel section. There are the Square type and Lozenge type in T-joint shapes. Principle parameters are the ratio of the chord width to thickness(D/T=33.3, 25, 16.7) and the ratio of brace width to chord width(d /D=0.4, 0.5, 0.67, 0.83, 1.0). The most important result obtained from this experiment is as follows; The Strength of T-joints increase proportionally as the D/T ratio decrease, and the d/D ratio increase. The others, experimental results are summarized for strength splacement, initial stiffness and failure mode of each T-joints.