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Structural Engineering and Mechanics Volume 77, Number 6, March25 2021 , pages 735-744 DOI: https://doi.org/10.12989/sem.2021.77.6.735 |
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Seismic response assessment of high-strength concrete frames strengthened with carbon fiber reinforced polymers |
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Javad Mokari Rahmdel, Farzin Vahid-Vahdattalab, Erfan Shafei and Tadeh Zirakian
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| Abstract | ||
| In recent years, the use of new materials and technologies with the aim of developing high-performing and costeffective structures has greatly increased. Application of high-strength concrete (HSC) has been found effective in reducing the dimensions of frame members; nonetheless, such reduction in dimensions of structural elements in the most cases may result in the lack of accountability in the tolerable drift capacity. On this basis, strengthening of frame members using fiber reinforced polymers (FRPs) may be deemed as an appropriate remedy to address this issue, which albeit requires comprehensive and systematic investigations. In this paper, the performance of properly-designed, two-dimensional frames made of high-strength concrete and strengthened with Carbon Fiber Reinforced Polymers (CFRPs) is investigated through detailed numerical simulation. To this end, nonlinear dynamic time history analyses have been performed using the Seismosoft software through application of five scaled earthquake ground motion records. Unstrengthened (bare) and strengthened frames have been analyzed under seismic loading for performance assessment and comparison purposes. The results and findings of this study show that use of CFRP can be quite effective in seismic response improvement of high-strength-concrete structures. | ||
| Key Words | ||
| high-strength concrete; CFRP; numerical simulation; dynamic time-history analysis; seismic response assessment | ||
| Address | ||
| Javad Mokari Rahmdel: Department of Civil Engineering, Urmia University of Technology, Urmia, Iran Farzin Vahid-Vahdattalab: Department of Civil Engineering, University of Mohaghegh Ardabili, Ardabil, Iran Erfan Shafei: Department of Civil Engineering, Urmia University of Technology, Urmia, Iran Tadeh Zirakian: Department of Civil Engineering and Construction Management, California State University, Northridge, USA | ||