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.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
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Supplemental Notes:
- Abstract reprinted with permission from ASCE
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Authors:
- Soranakom, C
- Mobasher, B
- Publication Date: 2007-8
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 933-941
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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