http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
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.
박금성,이상섭,홍성엽,배규웅,Park, Keum Sung,Lee, Sang Sup,Hong, Sung Yub,Bae, Kyu Woong 한국강구조학회 2014 韓國鋼構造學會 論文集 Vol.26 No.6
내진 보강용 이력 댐퍼로 활용하기 위해 개발된 좌굴방지가새는 일본과 미국을 중심으로 활발히 연구되어 왔다. 좌굴방지가새는 일반적으로 심재와 외피 사이를 콘크리트 등으로 채워 제작된다. 좌굴방지가새에 콘크리트를 채우는 일은 습식 공정으로 제작 효율을 떨어뜨릴 수 있는 하나의 원인으로 심재와 콘크리트의 비부착 처리는 쉽지 않은 작업이다. 이를 개선하기 위해 반원형 스프링으로 심재를 횡지지하는 건식형 좌굴방지가새를 제안하였다. 건식형 좌굴방지가새를 실용화하기 위해 적절한 거동을 갖는 반원형 스프링의 형상을 해석적으로 조사하였다. 심재가 압축을 받아 고차모드로 좌굴하기 위해 필요로 하는 횡지지 강성과 강도를 이론적으로 평가하였다. 또한 실제 적용 조건을 반영하여 반원형 스프링의 실용적 소요강성와 강도를 계산하였다. 이 값을 기준으로 5가지 높이를 변수로 한 반원형 스프링의 비선형 좌굴해석을 통해 적절한 강종과 두께를 선정하였다. 끝으로 최종 선정된 반원형 스프링의 거동을 반영하여 이차원으로 모델링한 건식형 좌굴방지가새의 비선형 좌굴해석을 통해 건식형 좌굴방지가새의 좌굴강도는 반원형 스프링 사이의 거리를 좌굴 길이로 갖는 심재의 좌굴하중과 유사함을 확인하였다. Buckling restrained braces(BRBs) developed as a seismic protection element, hysteretic damper, have been investigated in America and Japan mainly. BRBs are composed of a steel core and concrete-filled steel casing. It is one of the major causes of drop in productivity to fill the steel casing with concrete. To improve this problem, the BRB is introduced in which the steel core is restrained with a pair of semicircular springs. In this paper, the numerical and analytical investigation about the desirable configuration for a semicircular spring is presented. Firstly, the stiffness and strength of semicircular spring is determined theoretically to buckle into a very high-order modes. Then, the required stiffness and strength are calculated under the practical design conditions and considered as reference values to find a proper configuration. The material strength and thickness of semicircular spring are chose from the finite element analysis for 5 semicircular springs with varying height. Finally, the nonlinear buckling analysis of BRB with proper semicircular springs shows that the bucking strength of the whole BRB is very similar to the strength of steel core with length between semicircular springs.
강재 전단 연결재가 사용된 CLT-콘크리트 합성바닥판의 휨성능 평가
박금성(Park, Keum-Sung),오근영(Oh, Keunyeong) 대한건축학회 2021 대한건축학회논문집 Vol.37 No.10
The purpose of this study was to evaluate the flexural performance of CLT-concrete composite floors that used steel shear connectors for applying a light modular system. The proposed steel shear connectors are inverted U-shaped and T-shaped, and were installed in the notches of the CLT floor. As experimental variables, the shear connector types, the number and thickness of CLT layers were considered, and the flexural performance of six composite floor specimens was evaluated. As a result, the maximum loads of all specimens were determined by rolling shear fractures and the specimens using the inverted U-shaped shear connector showed excellent flexural performance. However, the composite effect between CLT and concrete was found to be insignificant, and it is considered that it is necessary to improve the shape of steel shear connector later.
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.
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.
지관 회전형 각형강관 T형 접합부의 면내 설계 휨강도 평가
박금성(Park Keum-Sung),이상섭(Lee Sang-Sup),배규웅(Bae Kyu-Woong) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.8
The object of this paper is to evaluate the in-plane design strength T-joints made of cold-formed square hollow steel sections. The T-joints had the configuration that a branch member was oriented at 45 degrees to the main chord in the plane. This study focused on the branch-rotated T-joints governed by main chord flange failure mode among previous studies. Based on the test results of the branch-rotated T-joint in square hollow sections, the deformation limit was found as 1%B for 16.7≤2γ(=B/T)≤33.3 and 0.53≤β(=b₁/B)≤0.71. Existing strength formulae for original T-joint were investigated to be main chord flange failure for the branch-rotated T-joint, and the new proposed design formula was based on yield line theory model. Finally, There is a reasonably good agreement between the ultimate strength predicted using this formula and that determined experimentally.