土木工程专业毕业设计英文翻译.docVIP

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土木工程专业毕业设计英文翻译.doc

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土木工程专业毕业设计英文翻译土木工程专业毕业设计英文翻译

Critical Review of Deflection Formulas for FRP-RC Members Carlos Mota1; Sandee Alminar2; and Dagmar Svecova3 1Research Assistant, Dept. of Civil Engineering, Univ. of Manitoba, Winnipeg MB, Canada R3T 5V6. 2Research Assistant, Dept. of Civil Engineering, Univ. of Manitoba, Winnipeg MB, Canada R3T 5V6. 3Associate Professor, Dept. of Civil Engineering, Univ. of Manitoba, Winnipeg MB, Canada R3T 5V6 （corresponding author）. Abstract: The design of fiber-reinforced polymer reinforced concrete FRP-RC is typically governed by serviceability limit state requirements rather than ultimate limit state requirements as conventional reinforced concrete is. Thus, a method is needed that can predict the expected service load deflections of fiber-reinforced polymer FRP reinforced members with a reasonably high degree of accuracy. Nine methods of deflection calculation, including methods used in ACI 440.1R-03, and a proposed new formula in the next issue of this design guide, CSA S806-02 and ISIS M03-01, are compared to the experimental deflection of 197 beams and slabs tested by other investigators. These members are reinforced with aramid FRP, glass FRP, or carbon FRP bars, have different reinforcement ratios, geometric and material properties. All members were tested under monotonically applied load in four point bending configuration. The objective of the analysis in this paper is to determine a method of deflection calculation for FRP RC members, which is the most suitable for serviceability criteria. The analysis revealed that both the modulus of elasticity of FRP and the relative reinforcement ratio play an important role in the accuracy of the formulas. CE Database subject headings: Concrete, reinforced; Fiber-reinforced polymers; Deflection; Curvature; Codes; Serviceability;Statistics. Introduction Fiber-reinforced polymer FRP reinforcing bars are currently available as a substitute for steel reinforcement in concrete structures that may be vulnerable to attac