GFRP-Reinforced Concrete’s Strength Capacity Considering Combination of Compression and Flexure Forces
This paper analyzes the GFRP- reinforced concrete beam under combination of compression force and bending moment by establishing an interaction diagram following steel-reinforced concrete practice. The results show that as the compression force increases, the bending moment capacity gets larger. Therefore, the moment capacity is bigger than that designed per ACI 440. 1R, where pure bending is the only parameter considered ignoring the influence of compression force. By building the interaction diagram, different combinations of demand compression and flexure forces could be testified to see if the reinforced section’s strength is enough. By comparing concrete sections with different GFRP reinforce ratio, it is found that the influence of reinforcement ratio becomes smaller on the section’s capacity as the ratio gets bigger. In addition, for a section under large bending moment and small compression force, increasing the GFRP reinforcement will increase the section capacity effectively. However, when the section is under high compression force and bending moment, decreasing the concrete cover works more efficiently than increasing the reinforcement ratio. Therefore, different combinations of demand forces need to be investigated case to case to determine the most efficient way to design GFRP- reinforced concrete beam safely and economically.
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Supplemental Notes:
- This paper was sponsored by TRB committee AFF80 Structural Fiber Reinforced Polymers. Alternate title: Strength Capacity of Glass Fiber-Reinforced Concrete Considering Combination of Compression and Flexure Forces.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Huang, Yishi
- Asadollahi, Pooyan
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Conference:
- Transportation Research Board 94th Annual Meeting
- Location: Washington DC, United States
- Date: 2015-1-11 to 2015-1-15
- Date: 2015
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 13p
- Monograph Title: TRB 94th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Beams; Bending moments; Compressive strength; Concrete construction; Design methods; Flexural strength; Glass fiber reinforced plastics; Reinforced concrete; Structural design
- Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;
Filing Info
- Accession Number: 01555672
- Record Type: Publication
- Report/Paper Numbers: 15-4513
- Files: TRIS, TRB, ATRI
- Created Date: Feb 27 2015 10:05AM