Probabilistic-Based Safety Evaluation of Maryland Sign Structure System Subjected to Wind Effects
Publication: Journal of Performance of Constructed Facilities
Volume 36, Issue 1
Abstract
Performance assessment is important for existing infrastructures because it can effectively help conduct maintenance and keep the structure in good condition. In this study, with the database of sign structures provided by the Maryland State Highway Administration (MDSHA), a probabilistic-based analysis approach, with reliability concept, is developed for the assessment of sign structures for the state of Maryland. This approach uses structural members’ combined stress ratio (CSR) and fatigue stress ranges based on a standard specification as failure criteria. In existing sign structures, the focus is on Type CN2 (planar cantilever sign support), which is the category with the largest proportion of fatigue galloping-sensitive cantilever structures, and Type OH6 (box truss overhead sign support), which is the category with the largest proportion of overhead structures. Eventually, the failure probabilities of CN2 and OH6 groups are obtained, indicating which portion of sign structure is at high risk. Results of this study on sign structures will provide a basis for future inspection and maintenance of the infrastructure system.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are proprietary or confidential in nature and may only be provided with restrictions. (The statistical database of sign structures is from Maryland DOT TSIIM system.) Some or all data, models, or code that support findings of this study are available from the corresponding author upon reasonable request (risk ranking results in Tables 5 and 6).
Acknowledgments
The authors gratefully acknowledge the funding support received from the Maryland State Highway Administration (MDSHA) through Federal Highway Administration State Planning and Research (FHWA/SPR) Funds (Sponsor Contract No. SP910B4P).
References
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© 2021 American Society of Civil Engineers.
History
Received: Apr 27, 2021
Accepted: Sep 22, 2021
Published online: Oct 28, 2021
Published in print: Feb 1, 2022
Discussion open until: Mar 28, 2022
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