Fatigue tests of composite beam by steel fiber reinforced self-stressing concrete in the hogging bending

Autor: Tie-ming Hu, Zhen-yu Liang, Cheng-kui Huang, Xiao-feng Chen
Rok vydání: 2010
Předmět:
Zdroj: Journal of Shanghai University (English Edition). 14:430-436
ISSN: 1863-236X
1007-6417
DOI: 10.1007/s11741-010-0673-3
Popis: Through the experiments of 7 T-section composite beams, steel fiber reinforced self-stressing concrete (SFRSC) as the composite beam in the composite layer was studied under the hogging bending. The tests simulated composite layer tensile strain under the hogging bending of inverted loading composite beams, giving the relationship under the different fatigue stress ratios between fatigue cycles and steel bar’s stress range, crack width, stiffness loss and damage, etc., in composite layer. This article established fatigue life equation, and analyzed SFRSC reinforced mechanism to crack width and stiffness loss. The results show that SFRSC as the composite beam concrete has excellent properties of crack resistance and tensile, can reinforce the fatigue crack width and stiffness loss of composite beams, and improve the durability and in normal use of composite beams in the hogging bending zone.
Databáze: OpenAIRE
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