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Experimental Performance of Concrete Columns with Composite Jackets under Blast Loading

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Abstract
  • Measures to prevent progressive collapse of structures include protection of critical elements such as columns. In support of this goal, nine tests were conducted to assess the as-built performance of typical columns and the effectiveness of carbon fiber jackets in improving their performance. A quasi-static load protocol was developed to replicate in the laboratory the damage patterns observed in blast testing in the field. Load-deflection curves (resistance functions) and jacket strain were measured. Jackets were observed to change the failure mode from brittle shear to ductile flexure and to increase the load and displacement capacities of the column. Variations in jacket strain are discussed and experimental results are used to assess predictive models for shear capacity and resistance functions. The data support the use of these models for design but identify some limitations in the resistance functions.
  • Keywords: Fiber Reinforced Plastics, Blast Loads, Full-Scale Tests, Concrete Columns, Rehabilitation
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  • Rodriguez-Nikl, T., Lee, C., Hegemier, G., and Seible, F. (2012). ”Experimental Performance of Concrete Columns with Composite Jackets under Blast Loading.” Journal of Structural Engineering, 138(1), 81–89. doi: 10.1061/(ASCE)ST.1943-541X.0000444
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  • 138
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  • 1
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  • This work was funded by the Defense Threat Reduction Agency (DTRA).
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Peer Reviewed
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