Academic Journal
Seismic fragility analysis of fully prefabricated frame structures with steel plate hoop bolt connections based on various engineering demand parameters.
| Τίτλος: | Seismic fragility analysis of fully prefabricated frame structures with steel plate hoop bolt connections based on various engineering demand parameters. |
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| Συγγραφείς: | Gao Z; School of Civil and Transportation Engineering, Yellow River Conservancy Technical University, Kaifeng, China., Zhang J; Guangdong Provincial Key Laboratory of Intelligent Disaster Prevention and Emergency Technologies for Urban Lifeline Engineering, Dongguan University of Technology, Dongguan, China.; College of Urban Development and Modern Transportation, Xi'an University of Architecture and Technology, Xi'an, China., Cao L; School of Civil and Transportation Engineering, Yellow River Conservancy Technical University, Kaifeng, China. |
| Πηγή: | PloS one [PLoS One] 2026 May 27; Vol. 21 (5), pp. e0350096. Date of Electronic Publication: 2026 May 27 (Print Publication: 2026). |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: San Francisco, CA : Public Library of Science |
| Ιατρικοί όροι (MeSH): | Steel*/chemistry , Materials Testing* , Construction Materials* , Engineering*, Finite Element Analysis ; Models, Theoretical |
| Περίληψη: | Steel plates and bolted connections have become common construction details in prefabricated structural systems. However, prefabricated frame structures with steel plate hoop-bolted connections exhibit connection gaps, interface slip, and discontinuous force-transfer paths, making them prone to hysteretic degradation and cumulative damage under seismic loading. Conventional seismic fragility assessments typically rely on the maximum inter-story drift ratio, which focuses only on deformation demand and fails to capture key deterioration mechanisms such as low-cycle damage accumulation, stiffness degradation, and reduced energy dissipation capacity. Consequently, the seismic performance of prefabricated structures may be inadequately represented. To address this limitation, this study adopts a two-parameter damage model as the engineering demand parameter for incremental dynamic analysis (IDA) and fragility assessment, and compares it with the traditional drift-based index. An energy-dissipation-based story damage weighting method is further introduced to better characterize damage distribution and performance degradation along the structural height. Finite element models of prefabricated columns and beam-column joints with steel plate hoop-bolted connections were developed in SAP2000 using multilinear plastic link elements and validated against quasi-static test results. A comparative fragility analysis was then performed for six-story full prefabricated and cast-in-place frame structures. The results show that the inter-story drift ratio underestimates structural capacity in the elastic stage but overestimates collapse resistance compared with the two-parameter damage model. (Copyright: © 2026 Gao et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.) |
| Competing Interests: | NO authors have competing interests. |
| Substance Nomenclature: | 12597-69-2 (Steel) |
| Entry Date(s): | Date Created: 20260527 Date Completed: 20260717 Latest Revision: 20260717 |
| Update Code: | 20260717 |
| PubMed Central ID: | PMC13215489 |
| DOI: | 10.1371/journal.pone.0350096 |
| PMID: | 42201865 |
| Βάση Δεδομένων: | MEDLINE |
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