A hybrid FE-based predictive framework for ASR-affected structures coupled with accelerated experiments. (1st May 2021)

• Record Type: Journal Article
• Authors: Hariri-Ardebili, Mohammad Amin; Saouma, Victor E.; Hayes, Nolan W.
• Is Part Of: Engineering structures. Volume 234(2021)
• Publication Date: 2021-05-01
• Subjects: Concrete -- ASR -- Finite element -- Accelerated test -- Uncertainty; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2020.111709
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: Large scale experimental test of structural component (modeling wall of a nuclear containment building, with #11 rebars) damaged by alkali aggregate reaction (AAR) results are described. Blind numerical prediction with a nonlinear finite element analysis. A Probabilistic framework for uncertainty quantification is proposed. Results are presented in terms of fragility surfaces with desired limit state functions. Abstract: Engineers are often confronted with the challenge of performing a rigorous safety assessment of concrete structures affected by alkali silica reaction (ASR). Such an endeavor is often accompanied by accelerated expansion tests to simulate the aging process. This paper proposes an integrative framework to link test results with finite element analyses in order to predict future response. This hybrid approach is further enhanced through a probabilistic framework. As a vehicle for this approach, tests performed on large reinforced concrete panels subjected to accelerated ASR expansion are used, and predictive response made through an uncertainty quantification paradigm. Finally, safety is quantified through developed fragility functions. The proposed methodology could be expanded as a prognosis tool to other applications where future response of ASR affected structures is sought.