Static Load Test on Progressive Collapse Resistance of Precast Prestressed Hollow Core Slabs
Publication: Journal of Structural Engineering
Volume 149, Issue 9
Abstract
Precast prestressed hollow core slabs (PPHCSs) are widely used in the construction of multistory cross-wall structures, but the floors are vulnerable to progressive collapse induced by unexpected loadings due to weak links between PPHCSs. Despite this fact, limited studies have been carried out on the progressive collapse resistance of PPHCSs. In this study, quasi-static tests were conducted to evaluate the progressive collapse resistance of PPHCSs. The test parameters were the types of connectors [i.e., single rebar connector (S1), double rebar connector (S2), partially debonded rebar connector (S3), kinked rebar connector (S4), and partial hinge rebar connector (S5)]. The progressive collapse resistance including the load-carrying capacity, deformation capacity, failure modes, and main load-resisting mechanism was evaluated. The energy dissipation capacity of all specimens was estimated based on the energy balance principle, and the energy dissipation capacity of S5 was 91%, 303%, 190%, and 85% greater than that of S1–S4, respectively. Further, the pseudo-static response of each specimen was calculated using a simplified dynamic assessment method. The test results revealed that all specimens generated effective compressive arch action and catenary action, and the ultimate strength (72.56 kN) of S5 using partial hinge was 64%, 334%, 110%, and 45% greater than that of S1–S4, respectively.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author upon request.
Acknowledgments
The authors sincerely appreciate the funding support provided by the National Natural Science Foundation of China (NSFC) (No. 51878264), the National Key Research and Development Program of China (Nos. 2016YFC0701400 and 2016YFC0701308), the Key Research and Development Program of Changsha City (kq1801010), the Key Research and Development Program of Hunan province (2022SK2096), the National Research Foundation of Korea (NRF) Grant funded by the Korea Government (MSIT) (No. 2021R1A4A3030117), and the Korea Agency for Infrastructure Technology Advancement (KAIA) funded by the Ministry of Land, Infrastructure and Transport (Grant 22RMPP-C163162-02).
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Published In
Journal of Structural Engineering
Volume 149 • Issue 9 • September 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jul 28, 2022
Accepted: May 15, 2023
Published online: Jul 3, 2023
Published in print: Sep 1, 2023
Discussion open until: Dec 3, 2023
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