Connection of Reinforced Concrete Flat Slab and Concrete Filled Steel Tube Column: Proposed Structures, Experiment, Simulation and an Analytical Prediction Model for Shear Strength
Dao Ngoc the Luc1, Truong Quang Hai2, Truong Hoai Chinh3, Dao Ngoc The Vinh4

1Dr. Dao Ngoc The Luc*, Director, Danang Polytechnic Institute of Science and Technology,  University of Science and Technology, Da Nang, Viet Nam.
2Truong Quang Hai,  Lecturer, Department of Civil Engineering, Mien Trung University of Civil Engineering, Viet Nam.
3Dr. Truong Hoai Chinh,  Associate Professor, Department of Civil Engineering,  University of Science and Technology, Da Nang, Viet Nam.
4Dr. Dao Ngoc The Vinh,  Senior Lecturer, School of Civil Engineering, The University of Queensland, Australia.
Manuscript received on November 24, 2019. | Revised Manuscript received on December 15, 2019. | Manuscript published on December 30, 2019. | PP: 779-786 | Volume-9 Issue-2, December, 2019. | Retrieval Number:  B2974129219/2020©BEIESP | DOI: 10.35940/ijeat.B2974.129219
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Abstract: Concrete filled steel tube column (CFST) combined with reinforced concrete (RC) flat slab provides potential structural solution to replace the traditional structures in high-rise buildings. The CFST column – RC slab connection is the key factor for this structure type to work effectively. This paper proposes an improved structure for connection of concrete filled steel tube column and reinforced concrete flat slabs using steel plate shear-head. The experiments of two large-sized specimens are performed to assess the capacity and reliability of the proposed connection. Numerical simulation using Abaqus is also performed to validate the test results. Based on experimental and numerical simulation results, an analytical prediction model to estimate the punching shear capacity of the flat slab is presented.
Keywords: Concrete filled steel tube, Reinforced concrete, Column, Flat slab, Connection.