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首页> 外文期刊>Magazine of Concrete Research >Numerical simulation of the distribution and orientation of steel fibres in the SCC
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Numerical simulation of the distribution and orientation of steel fibres in the SCC

机译：SCC中钢纤维分布和取向的数值模拟

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摘要

Currently, steel-fibre-reinforced self-compacting concrete (SFRSCC) is widely used in infrastructure construction. The distribution and orientation of the fibres could directly determine the mechanical properties and behaviours of the SFRSCC component. This paper presents a new numerical simulation that can be used to calculate the distribution and orientation of the fibres in the SCC during the casting procedure. The casting procedure of the SFRSCC is investigated by using the computational fluid dynamics software CFX, based on the finite-volume method. The motion of the fibres can be simplified into translation and rotation, and the Matlab program simulates the procedure. To verify the method's accuracy, a casting procedure for a SFRSCC beam was simulated and the fibres' density in three orthogonal planes was investigated. The calculation results show good agreement with the experimental results, and the method is effective in analysing the distribution and orientation of fibres in SCC. To further analyse the orientation of fibres, the angles between three axes and fibre projection in three different planes are discussed. The beam can be divided into six parts according to the variation of the angle between the X axis and the projection of fibres in the XY plane.
机译：当前，钢纤维增强自密实混凝土（SFRSCC）被广泛用于基础设施建设。纤维的分布和取向可以直接决定SFRSCC组件的机械性能和行为。本文提出了一种新的数值模拟方法，可用于计算铸造过程中SCC中纤维的分布和取向。基于有限体积方法，使用计算流体力学软件CFX对SFRSCC的浇铸过程进行了研究。纤维的运动可以简化为平移和旋转，而Matlab程序可以模拟该过程。为了验证该方法的准确性，模拟了SFRSCC梁的浇铸过程，并研究了三个正交平面中的纤维密度。计算结果与实验结果吻合良好，对分析SCC中纤维的分布和取向是有效的。为了进一步分析纤维的取向，讨论了三个轴与纤维在三个不同平面上的投影之间的角度。根据X轴与纤维在XY平面上的投影之间的角度变化，可以将光束分为六个部分。

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  • 来源
    《Magazine of Concrete Research》 |2017年第16期|811-822|共12页
  • 作者

    Bi J. H.; Bao C.; Xu D.; Guan J.; Cheng W. X.;

  • 作者单位

    Tianjin Univ, Sch Civil Engn, Tianjin, Peoples R China|Tianjin Univ, Key Lab Coast Civil Struct Safety, Minist Educ, Tianjin, Peoples R China;

    Tianjin Univ, Sch Civil Engn, Tianjin, Peoples R China|Tianjin Univ, Key Lab Coast Civil Struct Safety, Minist Educ, Tianjin, Peoples R China;

    Tianjin Univ, Sch Civil Engn, Tianjin, Peoples R China|Tianjin Univ, Key Lab Coast Civil Struct Safety, Minist Educ, Tianjin, Peoples R China;

    Tianjin Univ, Sch Civil Engn, Tianjin, Peoples R China|Tianjin Univ, Key Lab Coast Civil Struct Safety, Minist Educ, Tianjin, Peoples R China;

    Tianjin Univ, Sch Civil Engn, Tianjin, Peoples R China|Tianjin Univ, Key Lab Coast Civil Struct Safety, Minist Educ, Tianjin, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fresh concrete; fibre-reinforced concrete; modelling;

    机译：新鲜混凝土;纤维混凝土;造型;

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