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Optimal FRP Jacket Placement in RC Frame Structures Towards a Resilient Seismic Design

Author

Listed:
  • G. Mahdavi

    (Department of Civil and Architectural Engineering and Mechanics, University of Arizona, Tucson, AZ 85721, USA
    Department of Civil Engineering, K. N. Toosi University of Technology, Tehran 19697, Iran)

  • K. Nasrollahzadeh

    (Department of Civil Engineering, K. N. Toosi University of Technology, Tehran 19697, Iran)

  • M. A. Hariri-Ardebili

    (Department of Civil Environmental and Architectural Engineering, University of Colorado, Boulder, CO 80309, USA)

Abstract

This paper proposes an optimal plan for seismically retrofitting reinforced concrete (RC) frame structures. In this method, the columns are wrapped by fiber-reinforced polymer (FRP) layers along their plastic hinges. This technique enhances their ductility and increases the resiliency of the structure. Two meta-heuristic algorithms (i.e., genetic algorithm and particle swarm optimization) are adopted for this purpose. The number of FRP layers is assumed to be the design variable. The objective of the optimization procedure was to provide a uniform usage of plastic hinge rotation capacity for all the columns, while minimizing the consumption of the FRP materials. Toward this aim, a single objective function containing penalty terms is introduced. The seismic performance of the case study RC frame was assessed by means of nonlinear pushover analyses, and the capacity of the plastic hinge rotation for FRP-confined columns was evaluated at the life safety performance level. The proposed framework was then applied to a non-ductile low-rise RC frame structure. The optimal retrofit scheme for the frame was determined, and the capacity curve, inter-story drift ratios, and fragility functions were computed and compared with alternative retrofit schemes. The proposed algorithm offers a unique technique for the design of more resilient structures.

Suggested Citation

  • G. Mahdavi & K. Nasrollahzadeh & M. A. Hariri-Ardebili, 2019. "Optimal FRP Jacket Placement in RC Frame Structures Towards a Resilient Seismic Design," Sustainability, MDPI, vol. 11(24), pages 1-22, December.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:24:p:6985-:d:295262
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    References listed on IDEAS

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    1. Ehsan Khojastehfar & Seyed Bahram Beheshti-Aval & Mohammad Reza Zolfaghari & Kourosh Nasrollahzade, 2014. "Collapse fragility curve development using Monte Carlo simulation and artificial neural network," Journal of Risk and Reliability, , vol. 228(3), pages 301-312, June.
    2. R. R. L. (Rick) van Loon & Ester Pujadas-Gispert & S. P. G. (Faas) Moonen & Rijk Blok, 2019. "Environmental Optimization of Precast Concrete Beams Using Fibre Reinforced Polymers," Sustainability, MDPI, vol. 11(7), pages 1-12, April.
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    Cited by:

    1. Emmanouil Golias & Adamantis G. Zapris & Violetta K. Kytinou & George I. Kalogeropoulos & Constantin E. Chalioris & Chris G. Karayannis, 2021. "Effectiveness of the Novel Rehabilitation Method of Seismically Damaged RC Joints Using C-FRP Ropes and Comparison with Widely Applied Method Using C-FRP Sheets—Experimental Investigation," Sustainability, MDPI, vol. 13(11), pages 1-19, June.
    2. Goran Vizentin & Darko Glujić & Vedrana Špada, 2021. "Effect of Time-Real Marine Environment Exposure on the Mechanical Behavior of FRP Composites," Sustainability, MDPI, vol. 13(17), pages 1-20, September.
    3. Mohamed Noureldin & Jinkoo Kim, 2023. "Simplified Life Cycle Cost Estimation of Low-Rise Steel Buildings Using Fundamental Period," Sustainability, MDPI, vol. 15(3), pages 1-23, February.
    4. Bu-Seog Ju & Hoyoung Son & Sangwoo Lee & Shinyoung Kwag, 2022. "Estimating Seismic Demands of a Single-Door Electrical Cabinet System Based on the Performance Limit-State of Concrete Shear Wall Structures," Sustainability, MDPI, vol. 14(9), pages 1-13, May.

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