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Steel and Composite Structures
  Volume 37, Number 1, October10 2020, pages 75-90

Behavior of composite CFST beam-concrete column joints
Seung-Eock Kim, Ji-Hun Choi, Thai-Hoan Pham, Viet-Hung Truong, Zhengyi Kong, Nguyen-Thê Duong and Quang-Viet Vu

    This paper introduces a new composite joint, which is the composite CFST beam- concrete column joint, and it is more convenient for transportation and erection than conventionally welded joints. The main components of this joint include steel H-beams welded with CFST beams, reinforced concrete columns, and reinforced concrete slabs. The steel H-beams and CFST beams are connected with a concrete slab using shear connectors to ensure composite action between them. An experimental investigation was conducted to evaluate the proposed composite joint performance. A three-dimensional (3D) finite element (FE) model was developed and analyzed for this joint using the ABAQUS/explicit. The FE model accuracy was validated by comparing its results with the relevant test results. Additionally, the parameters that consisted of the steel box beam thickness, concrete compressive strength, steel yield strength, and reinforcement ratio in the concrete slab were considered to investigate their influence on the proposed joint performance.
Key Words
    concrete-filled steel tubular; composite joints; finite element model; ABAQUS/explicit
Seung-Eock Kim and Ji-Hun Choi: Department of Civil and Environmental Engineering, Sejong University, 98 Gunja-dong, Gwangjin-gu, Seoul, 05006, South Korea
Thai-Hoan Pham: Department of Concrete Structures, National University of Civil Engineering, 55 Giai Phong, Hanoi, Vietnam
Viet-Hung Truong: Faculty of Civil Engineering, Thuyloi University, 175 Tay Son, Dong Da, Hanoi, Vietnam
Zhengyi Kong: School of Civil Engineering and Architecture, Anhui University of Technology, Ma

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