Title:
Optimization of Reinforced Fibrous Concrete Beams
Author(s):
A. Samer Ezeldin and Cheng-Tzu Thomas Hsu
Publication:
Structural Journal
Volume:
89
Issue:
1
Appears on pages(s):
106-118
Keywords:
beams (supports); flexural strength; metal fibers; microcomputers; optimization; reinforced concrete; shear strength; Structural Research
DOI:
10.14359/1273
Date:
1/1/1993
Abstract:
Steel fiber reinforced concrete is increasingly used as a construction material. Studies have shown that steel fibers can be used to increase the bending moment capacity and shear strength of reinforced concrete beams. A computer algorithm that analyzes the combined contribution of steel fibers to flexural and shear strengths of reinforced fiber concrete beams is presented. The algorithm conducts a systematic direct search in the space of six variables--beam width, beam depth, fiber content, bending reinforcing bars, shear stirrups, and stirrup spacing--to yield an optimum solution for a given cost objective function. The algorithm can simplify the combined use of concrete, conventional reinforcement, and steel fibers as construction materials.