| 锈胀开裂后钢筋混凝土粘结滑移本构关系研究 |
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| 引用本文： | 张伟平,张誉.锈胀开裂后钢筋混凝土粘结滑移本构关系研究[J].土木工程学报,2001,34(5):40-44. |
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| 作者姓名： | 张伟平 张誉 |
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| 作者单位： | 张伟平（同济大学）
张誉（同济大学） |
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| 基金项目： | 国家基础性研究重大项目(攀登计划) |
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| 摘 要： | 采用外加电流加速钢筋锈蚀的方法,控制试件表面不同锈胀裂缝宽度.在钢筋开槽、内贴应变片的半梁式粘结试验的基础上,根据实测结果和理论分析,获得不同试件锚固长度内粘结应力及钢筋混凝土相对滑移的分布规律,推导出τ-s关系沿锚固长度的变化规律,从而提出了不同锈胀程度下,反映这种变化规律的位置函数ψ(x),建立考虑锚固位置影响的锈后钢筋混凝土粘结滑移本构关系,为锈后钢筋混凝土构件的有限元分析计算提供依据.
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| 关 键 词： | 钢筋混凝土 钢筋锈蚀 粘结应力 粘结滑移 |
| 文章编号： | 1000-131X(2001)05-0040-05 |
| 修稿时间： | 2000年3月27日 |
BOND-SLIP RELATIONSHIP BETWEEN CORRODED STEEL BARS AND CONCRETE |
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| Zhang Weiping,Zhang Yu.BOND-SLIP RELATIONSHIP BETWEEN CORRODED STEEL BARS AND CONCRETE[J].China Civil Engineering Journal,2001,34(5):40-44. |
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| Authors: | Zhang Weiping Zhang Yu |
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| Abstract: | In this paper,half?beam tests are carried out to study the influence of steel bar corrosion and cracking widths on the bond behavior of the reinforced concrete.The bond behavior of the reinforced concrete in noncorrosion,precrack stage,crack initial stage,and post?crack stage is studied.The stages of corrosion are achieved by impressing the direct current on test bars.These bars are instrumented with the strain gauge placed in a machined axial cavity.The distribution of the bond stress and relative slip along the anchorage length of a corroded bar is calculated based on the test results.The test results have shown that the bond strength decrease rapidly while the expansion cracking occurred ,and the bond?slip relationship at different position along the steel bar is varied. |
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| Keywords: | reinforced concrete steel bar corrosion bond stress bond?slip |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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