The aim of this study is to reveal the effect of horizontal restraints on the progressive collapse behaviour of precast concrete (PC) framed substructures. To this end, two one-thirds-scale 2-storey 2-span beam-column sub-frames with varying horizontal restraint conditions have been experimentally investigated. A nonlinear finite element (FE) model based on ABAQUS package was established and validated against failure modes and load-carrying capacity recorded in the test. Parametric studies were conducted using the FE simulation approach to investigate the effect of key design variables on the performance of the PC sub-frames. It was found that the failure of the PC beam-column assemblies was dominated by pull-out of anchorage bars on side joints and the load-carrying capacity of the PC sub-frames were considerably affected by horizontal restraints.
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The authors are grateful for the financial support of the National Science and Technology Major Project (2016YFC0701400) and China Postdoctoral Science Fund (17Z102060052).
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Wang, F., Yang, J. & Shah, S. Effect of Horizontal Restraints on Progressive Collapse Resistance of Precast Concrete Beam-Column Framed Substructures. KSCE J Civ Eng 24, 879–889 (2020). https://doi.org/10.1007/s12205-020-1035-9
- Progressive collapse
- Precast concrete frame
- Horizontal restraints
- Experimental study
- Numerical simulation