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Theoretical and experimental study on shear behaviour of hybrid fibre-reinforced concrete deep beam
Magazine of Concrete Research ( IF 2.7 ) Pub Date : 2022-05-09 , DOI: 10.1680/jmacr.21.00135
Yudong Ma 1 , Kaize Ma 2 , Boquan Liu 3
Affiliation  

This paper proposes an analytical method for predicting the shear capacity of hybrid fibre-reinforced concrete (HFRC) deep beams based on the softened strut-and-tie model. Moreover, a test was conducted to evaluate the proposed method and further investigate the shear behaviour of HFRC deep beam. The shear and deformation capacities of HFRC deep beams increased with the steel fibre volume. The shear capacity also increased with the web reinforcement ratio; however, the deformation capacity first increased and then slightly decreased. The steel fibre volume slightly affected the HFRC deep beam stiffness, and the increase in web reinforcement ratio improved the stiffness retention. The strains in concrete and reinforcement in the HFRC deep beam were relieved by the increase in the steel fibre volume. Although the increase in the web reinforcement ratio reduced the strain in the HFRC deep beam reinforcement, it only slightly affected the strain in the concrete.

中文翻译:

混合纤维混凝土深梁抗剪性能理论与试验研究

本文提出了一种基于软化拉筋模型预测混合纤维增强混凝土(HFRC)深梁抗剪承载力的分析方法。此外,还进行了测试以评估所提出的方法并进一步研究 HFRC 深梁的剪切行为。HFRC深梁的剪切和变形能力随着钢纤维体积的增加而增加。抗剪能力也随着腹板配筋率的增加而增加;但变形能力先增加后略有下降。钢纤维体积略微影响了 HFRC 深梁刚度,腹板配筋率的增加提高了刚度保持率。HFRC 深梁中混凝土和钢筋的应变通过钢纤维体积的增加得到缓解。
更新日期:2022-05-09
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