Seismic Performance of Joint between Timber–Concrete Composite Beams and Steel Column with Innovative Semirigid Connections: Experimental and Numerical Studies under Quasi-Static Cyclic Loading Conditions
Publication: Journal of Structural Engineering
Volume 149, Issue 10
Abstract
In this study, an interior joint between timber-concrete composite (TCC) beams and steel column was as tested under quasistatic cyclic loads. To obtain an acceptable seismic performance, a type of innovative semirigid beam-to-column connection with screwed-in threaded rods (STRs) and novel steel links was designed for the joint. For validation, the detailed three-dimensional finite element (FE) models considering the elastic-plastic damage behavior of the materials were established in ABAQUS version 6.14. The test results demonstrated that owing to the excellent energy dissipation capacity of the steel links, the joints showed good seismic performance with plump hysteretic curves. Also, the stiffness and load-carrying capacity of the joint composite with concrete slab were higher than those of the joint with bare timber beams. However, because the yielding and deformation capacity of the beam-to-column connections were primarily derived from the steel links, the presence of a concrete slab had limited improvement on the energy dissipation capacity of the joints. Additionally, the FE model could clearly present the failure modes of the TCC joint, including the fracture of steel components, cracking of concrete, and withdrawal slip of threaded rods. The FE numerical results also showed good agreement with the test results in terms of the hysteretic curves, energy dissipation capacity, and stiffness degradation behavior.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The study authors highly appreciate the supports provided by National Natural Science Foundation of China (Grant No. 51878344).
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Published In
Journal of Structural Engineering
Volume 149 • Issue 10 • October 2023
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© 2023 American Society of Civil Engineers.
History
Received: Oct 22, 2022
Accepted: Jun 12, 2023
Published online: Jul 27, 2023
Published in print: Oct 1, 2023
Discussion open until: Dec 27, 2023
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