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山东大学学报 (工学版) ›› 2025, Vol. 55 ›› Issue (6): 120-128.doi: 10.6040/j.issn.1672-3961.0.2024.249

• 土木工程 • 上一篇    

钢渣细骨料混凝土软化曲线逆推分析

薛刚,张一帆*,刘江森,董伟   

  1. 内蒙古科技大学土木工程学院, 内蒙古 包头 014010
  • 发布日期:2025-12-22
  • 作者简介:薛刚(1968— ),男,内蒙古包头人,教授,硕士生导师,博士,主要研究方向为新型建筑材料与混凝土力学. E-mail: xuegang-2008@126.com. *通信作者简介:张一帆(1999— ),男,江苏徐州人,硕士研究生,主要研究方向为钢渣混凝土软化本构关系. E-mail:15952184224@163.com
  • 基金资助:
    国家自然科学基金资助项目(52168032);2023年度内蒙古自治区直属高校基本科研业务费资助项目(2023RCTD025)

Inverse analysis on the softening curve of steel slag fine aggregate concrete

XUE Gang, ZHANG YifanSymbolj@@, LIU Jiangsen, DONG Wei   

  1. XUE Gang, ZHANG YifanSymbolj@@, LIU Jiangsen, DONG Wei(Civil Engineering School, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
  • Published:2025-12-22

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摘要： 为研究钢渣细骨料体积分数对混凝土软化特性的影响,选用安定性满足规范限值要求的钢渣细骨料配制混凝土进行楔入劈拉试验,通过ISIGHT集成MATLAB和ABAQUS建立逆分析程序,推演得到钢渣细骨料混凝土的三线性软化曲线,基于楔入劈拉试验结果验证了软化曲线有限元分析的准确性。结果表明:钢渣能够明显提高混凝土的抗拉强度并加大混凝土开裂后的应力降幅,当混凝土中钢渣的体积分数为20%时,三线性软化曲线第二段斜率降幅最大;软化曲线尾端混凝土开裂位移随钢渣体积分数的增加而降低,混凝土延性变差。钢渣细骨料混凝土逆推软化曲线为研究其软化性能提供了理论依据。

关键词: 材料工程, 钢渣混凝土, 楔入劈拉, 逆分析法, 软化曲线

Abstract: In order to study the influence of steel slag fine aggregate volume fraction on the softening characteristics of concrete, the steel slag fine aggregate with stability meeting the specification limit requirements was selected to prepare concrete for wedge splitting test, and the inverse analysis program was established by ISIGHT integrated MATLAB and ABAQUS, and the trilinear softening curve of steel slag fine aggregate concrete was deduced, and the accuracy of finite element analysis of the softening curve was verified based on the wedge splitting tensile test results. The results showed that steel slag could significantly improve the tensile strength of concrete and accelerate the stress reduction of concrete after cracking. When the steel slag volume fraction was 20%, the slope of the second segment of the trilinear softening curve decreased the most. The cracking displacement of concrete at the end of the softening curve decreased with the increase of steel slag volume fraction, and the ductility of concrete deteriorated. The softening curve of steel slag fine aggregate concrete provided a theoretical basis for studying its softening performance.

Key words: materials engineering, steel slag concrete, wedge and split, inverse analysis method, softening curve

中图分类号: 

  • TU528.51
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[1] 薛刚,刘秋雨,董伟,李京军. 冲击荷载下钢渣细骨料混凝土力学特性及本构关系[J]. 山东大学学报 (工学版), 2025, 55(4): 108-117.
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