Design of Fibre-Reinforced Concrete Structures

Different types of concrete are invented in the past years, in order to improve it`s behaviour for different loading and environmental situations. Among them, fibre reinforced concrete (FRC) is one of the most recently developed concrete types. Design procedures for the FRC elements are included in only a few existing code provisions. Among them, fib Model Code 2010 (MC 2010) provides the biggest amount of necessary information and recommendations in order to design FRC elements. Yet, a lack of the guidelines for the design of elements loaded with different combinations of bending moment and axial force is noticed in the existing code provisions. Therefore, in the scope of this paper, interaction curves for FRC are developed. The interaction curves are developed for both, ultimate limit state (ULS) and serviceability limit state (SLS). Furthermore, example of the use of such interaction curves is given. Comparison in the design of reservoir made of reinforced concrete (RC) and FRC is performed. It is shown that the use of FRC especial benefits design according to SLS, as FRC provides better behaviour regarding crack spacing and crack width of element, while developed interaction curves for SLS significantly decrease the time necessary for such a design.

FRC, fibre, interaction curve, fib Model Code 2010, reservoir design

1. Imbabi,MS., Carrigan,C., McKenna,S. "Trends and developments in green cement and concrete technology", Int. J. Sustain. Built Environ. 1 (2012) 194–216. doi:10.1016/j.ijsbe.2013.05.001.

2. Moropoulou,A., Bakolas,A., Anagnostopoulou,S., "Composite materials in ancient structures", Cem. Concr. Compos. 27 (2005) 295–300.

3. Katzer,J., "Steel Fibers and Steel Fiber Reinforced Concrete in Civil Engineering", Pacific J. Sci. Technol. 7 (2006).

4. Romualdi,J., Ramey,M., "Effects on impulsive loads on fiber-reinforced concrete beams", Pittsburgh,Pennsylvania, 1965.

5. Löfgren,I., "Fibre-reinforced Concrete for Industrial Construction", Chalmers University of technology, 2005.

6. The International Federation for structural concrete, fib Model Code for Concrete Structures 2010, 2010.

7. Autodesk Robot Structural Analysis; User manual for Autodesk Robot Structural Analysis 547G1- WWR111-1001.

8. Vandewalle,L., Banthia,N., Brandt,A.M., RILEM TC 162-TDF: Test and design methods for steel fibre reinforced concrete, Mater. Struct. (2000) 75–81.

9. Comision Permanente del Hormigon, EHE-08 Instruccion de Hormigon Estructural, Ministerio de Fomento, Spain, 2008.

10. Advisory Committee on Technical Recommendations for Construction, Guide for the Design and Construction of Fiber-Reinforced Concrete Structures CNR-DT 204, Italy, 2007.

...