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볼트 접합된 반강접 보-기둥 죠인트에 대한 Component Method의 적용
양철민,김동환,김영문 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
Beam-to-column joint transfer reactions from the beam to the column. When subjected to shear forces and in-plane bending moment, they deform, particularly in rotation. In other words, the primary distortion of a steel beam-to-column joint is its rotational deformation (θ), caused by the in-plane bending moment (M). Therefore, the joint behavior is substantially represented through M-θ, which is the most important input data for the analysis and design of semi-rigid frames. The study of the M-θ behavior of steel beam-to-column joints has increased dramatically. Several approaches to create nonlinear M-θ curves for various connection types have been used. In fact, even though simplified methods have been already developed for evaluating the rotational behavior of connections with angles, these models refer only to the behavior of the connection rather than to the joint as a whole, excluding the significant influence of the column components. The case of bolted connections with angles becomes even more complex than others. In this paper, a mechanical model to predict their M-θ curve is presented. To achieve this goal, the component method described in Annex J of Eurocode 3 (CEN, 1997) is used. Also, in order to verify the reliability of the component method, experimental test on bolted semi-rigid beam-to-column connection was conducted.
반복하중을 받는 볼트 접합된 외부 보-기둥 접합부의 성능
양철민,김영문 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
This paper persents an experimental investigation on the cyclic behavior of steel assemblages with fixed, semi-rigid and flexible connections. The studies consisted of subjecting three connection assemblages to an increasing level of large cyclic rotations until failure occurred. The main objectives of the experimental studies were to directly compare performance of connections. The result of this study show that semi-rigid connection was developed about 38% of rigid connection for initial rotational stiffness, and simple connection about 4.3%. Also, the hysteretic energy dissipation capabilities of the connections were determined, and the mechanism of failure was identified. Test observations show that the stiffness of weld connection is not fully rigidity, whereas for angle connection, it is not ignorable.
반복 횡하중을 받는 1층 1경간 철골조의 접합부 거동특성
양철민,김영문 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.1
This study presents the experimental results from dealing with a behavior of connection in steel frame which was subjected to the cyclic lateral loading. The investigation focuses on the performance of steel frames with semirigid connection(typical type Top & Seat Angle with Double Web-Angle Connection) in comparison with fully rigid(typical type : Fully Welded Connection) and simple connection(typical : Double Web Angle Connection). Total specimens was six. The experimental program includes cyclic tests. Test control is displacement-control method by oil-jack system. Result from six tests on one-story one-bay frames are discussed, and the effects of connection stiffness and capacity on frame response are assessed. The result of this study show that the TSD(Top & Seat Angle with Double Web Angle) connection was developed about 41% of Fully Welded Connection for rotational stiffness and the DWA(Double Web Angle connection about 9.7%. As a result, It has to be design that considered to actual stiffness of beam-column connection in frame.