Performance Investigation of Earthquake-Damaged Reinforced Concrete Bridges with Repaired Columns
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2021-06-01
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Corporate Contributors:United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology ; University of Nebraska. Mid-America Transportation Center ; United States. Department of Transportation. Federal Highway Administration
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Edition:Final report (Jan 2019-June 2021)
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Abstract:This report summarizes the details of a study that was conducted to determine the influence of a column repair (member level) on the post-repair performance of bridge structures (system level). Reinforced concrete (RC) bridge columns are typically designed to be the primary source of energy dissipation for a bridge structure during an earthquake. Therefore, seismic repair of RC bridge columns has been studied extensively during the past several decades; however, few studies have been conducted evaluate how repaired column members effect the system-level response of an RC bridge structure in subsequent earthquakes. In this study, a numerical model was established to simulate the response of two repaired RC columns reported in the literature. The columns were implemented into a prototype bridge that was subjected to earthquake loading. Incremental dynamic analysis (IDA) was conducted on numerical bridge models to evaluate the efficacy of the repair and the post-repair seismic performance of the prototype bridge that included one or more repaired columns. The methodology adopted in this study was based on previous work by He et al. (2016) and was extended to RC columns with different repair conditions.
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