Closed-Form Solutions for Flexural Response of Fiber-Reinforced Concrete Beams

A constitutive law for fiber-reinforced concrete materials consisting of an elastic perfectly plastic model for compression and an elastic-constant postpeak response for tension is presented. The material parameters are described by using Young's modulus and first cracking strain in addition to 4 nondimensional parameters to define postpeak tensile strength, compressive strength, and ultimate strain levels in tension and compression. The closed-form solutions for moment-curvature response are derived and normalized with respect to their values at the cracking moment. Further simplification of the moment-curvature response to a bilinear model, and the use of the moment-area method results in another set of closed-form solutions to calculate midspan deflection of a beam under 3- and 4-point bending tests. Model simulations are correlated with a variety of test results available in literature. The simulation of a 3- and 4-point bending test reveals that the direct use of uniaxial tensile response underpredicts the flexural response.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
• Supplemental Notes:
  • Abstract reprinted with permission from ASCE
• Authors:
  • Soranakom, C
  • Mobasher, B
• Publication Date: 2007-8

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 933-941
• Serial:
  • Journal of Engineering Mechanics
  • Volume: 133
  • Issue Number: 8
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Beams; Bending moments; Bending stress; Composite materials; Fiber reinforced concrete; Flexural strength; Reinforcement (Engineering); Structural mechanics; Structural members
• Uncontrolled Terms: Closed form solutions
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01055260
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 21 2007 9:56PM