再生混凝土与钢筋粘结滑移性能的试验研究及力学分析

王博, 白国良, 代慧娟, 吴淑海

王博, 白国良, 代慧娟, 吴淑海. 再生混凝土与钢筋粘结滑移性能的试验研究及力学分析[J]. 工程力学, 2013, 30(10): 54-64. DOI: 10.6052/j.issn.1000-4750.2012.06.0396
引用本文: 王博, 白国良, 代慧娟, 吴淑海. 再生混凝土与钢筋粘结滑移性能的试验研究及力学分析[J]. 工程力学, 2013, 30(10): 54-64. DOI: 10.6052/j.issn.1000-4750.2012.06.0396
WANG Bo, BAI Guo-liang, DAI Hui-juan, WU Shu-hai. EXPERIMENTAL AND MECHANICAL ANALYSIS OF BOND-SLIP PERFORMANCE BETWEEN RECYCLED CONCRETE AND REBAR[J]. Engineering Mechanics, 2013, 30(10): 54-64. DOI: 10.6052/j.issn.1000-4750.2012.06.0396
Citation: WANG Bo, BAI Guo-liang, DAI Hui-juan, WU Shu-hai. EXPERIMENTAL AND MECHANICAL ANALYSIS OF BOND-SLIP PERFORMANCE BETWEEN RECYCLED CONCRETE AND REBAR[J]. Engineering Mechanics, 2013, 30(10): 54-64. DOI: 10.6052/j.issn.1000-4750.2012.06.0396

再生混凝土与钢筋粘结滑移性能的试验研究及力学分析

基金项目: 国家科技支撑计划项目(2008BAK48B05);陕西省自然科学基础研究计划重点项目(2009JZ012)
详细信息
    作者简介:

    白国良(1955―),男,陕西西安人,教授,博士,博导,从事结构工程及其抗震研究(E-mail:guoliangbai@126.com);代慧娟(1985―),女,河南洛阳人,讲师,博士,从事混合结构体系与再生混凝土结构研究(E-mail: daihuijuan1985@163.com);吴淑海(1982―),男,海南海口人,工程师,硕士,从事再生混凝土结构研究(E-mail: wushuhai168@163.com).

    通讯作者:

    王博(1985―),男,河南南阳人,博士生,从事再生混凝土结构与工程结构抗震研究(E-mail:chnwangbo@163.com).

  • 中图分类号: TU502;TU528.0;TU13

EXPERIMENTAL AND MECHANICAL ANALYSIS OF BOND-SLIP PERFORMANCE BETWEEN RECYCLED CONCRETE AND REBAR

  • 摘要: 良好的粘结性能是确保再生混凝土与钢筋能够共同工作的前提条件。通过120个试件的拉拔试验,并结合非平衡态热力学与损伤力学的相关理论分析再生混凝土与钢筋间的粘结滑移性能。提出三段式的粘结滑移本构模型,对比表明该模型对实测粘结滑移曲线具有较好的模拟效果。分析了粘结破坏过程中的能量守恒与能量耗散特性,给出了耗散能与弹性变形能代表值的计算公式,探讨了初始弹性变形能与极限弹性变形能的关系,并基于本构破坏能,对影响粘结性能的因素进行了分析。提出相对损伤变量的概念,定义了界面相对损伤变量,推导出相对损伤滑移方程,分析了界面初始损伤、界面损伤发展阶段以及界面损伤的发展速度。研究结果可为推广应用钢筋再生混凝土结构提供基础研究资料。
    Abstract: Good bond performance is a prerequisite to ensure that the recycled concrete and the rebar can work together. According to the pull-out test with 120 test specimens, the bond-slip performance between the recycled concrete and the rebar is investigated using the theory of non-equilibrium thermodynamics and damage mechanics. The bond-slip constitutive model is proposed and the analysis result shows that the model has better simulation effect. The characteristics of the energy conservation and dissipation during the bond failure process are analyzed, and then the formula to represent the dissipated energy and elastic deformation energy are proposed. The relationship between the initial elastic deformation energy and the limit elastic deformation energy is studied. The main factors affecting the bond performance are analyzed based on the constitutive energy. Then, this paper proposes the concept of relative damage variation which defines the interface relative damage variation, and proposes the equation of relative damage to slip. Besides, the initial damage, the stages of interface damage development and the growth rate of interface damage are analyzed. The results of the present study could provide fundamental research data to promote the application of reinforced recycled concrete structure.
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出版历程
  • 收稿日期:  2012-06-04
  • 修回日期:  2012-07-09
  • 刊出日期:  2013-10-24

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