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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 54202 (09)
- University: Sharif University of Technology
- Department: Civil Engineering
- Advisor(s): Khaloo, Alireza
- Abstract:
- FRP rebars due to various properties such as high resistance to weight ratio, high corrosion resistance, high tensile strength, low weight, resistance to electrical and magnetic conductivity, and other desirable properties, have always been an interesting topic for researchers as an alternative to steel rebars in special conditions.In this research, a two-dimensional sway intermediate concrete frame with three stories and two bays reinforced with GFRP bars was designed and studied. Unlike previous researches and design codes, the compressive strength of the bars was considered in the design process. With computer coding in Matlab software, column interaction diagrams and a special contour diagram were developed that gives the nominal moment of beams with respect to compressive and tensile bars simultaneously. Afterward, the sections were designed with regards to ACI44015 design code using forces analyzed by the SAP2000 program under static and response spectrum earthquake loads. finally, the designed frame was analyzed and investigated by the Pushover analysis method.The results show that despite considering the compressive strength of the rebars, the required GFRP reinforcement in beams and columns is more than that of steel rebar. GFRP rebars significantly reduce the effective flexural stiffness of beams and columns, so that the maximum cracking coefficient of the beams and columns were 0.26 and 0.19 respectively. If the tensile reinforcement in the beams is low or the cross-section is designed as a tension-controlled or transition zone, the effect of the compressive rebars is negligible and the effect of the compressive rebars on the nominal moment of beam sections increases as the tensile reinforcements increase. Ignoring the compressive strength of the rebars in the column interaction diagram underestimates the actual capacity. Although GFRP rebar has a linear behavior, it can cause more drift and deformation of the structure than conventional structures in an earthquake
- Keywords:
- Dynamic Loading ; Pushover Analysis ; Static Loading ; Concrete Frame ; Glass Fiber Reinfoced Polymer (GFRP) ; Fiber Reinforced Plastic (FRP) ; Concrete Compressive Strenght
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