Vol. 18, No. 3, pp. 658-669 (2022)
ENERGY DISSIPATION OF STEEL-CONCRETE COMPOSITE BEAMS SUBJECTED TO VERTICAL CYCLIC LOADING
Jing Liu 1, Fei Lyu 2, *, Fa-Xing Ding 2, * and Xue-Mei Liu 3
1 School of Civil Engineering, Hunan City University, Yiyang, Hunan Province, 413000, P. R. China
2 School of Civil Engineering, Central South University, Changsha, Hunan Province, 410075, P. R. China
3 Department of Infrastructure Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.; This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.; This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 2 June 2021; Revised: 14 December 2021; Accepted: 21 December 2021
DOI:10.18057/IJASC.2022.18.3.3
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ABSTRACT
The finite element (FE) software ABAQUS was used to establish a 3D FE model and perform a pseudo-static analysis of steel–concrete composite beams. With the validated model, the influences of several key parameters, including shear connection degree, force ratio, and transverse reinforcement ratio, on seismic behavior were investigated and discussed. In addition, the working performance of studs was analyzed. The FE analysis results show that the steel girder is the main energy dissipation component of the composite beam, and the energy dissipation of the steel girder is more than 80% of the total energy. The next is longitudinal reinforcement, followed by a concrete slab, the minimum proportion is the studs. Results show that the energy dissipation ratio of studs is less than 1% under the condition of the parameters. However, an increase in shear connection is beneficial to improve the energy dissipation of steel girders and rebars. Shear connection, force ratio, and steel girder width–thickness ratio are the major factors that influence bearing capacity and seismic behavior. Transverse reinforcement, section form, and stud diameter are the secondary factors. Finally, a seismic design for composite beams was established.
KEYWORDS
Steel–concrete composite beam, Shear connection degree, Plastic energy consumption, Hysteretic behavior
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