| 混凝土结构早龄期开裂的分析与预测 |
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| 引用本文： | 王甲春,阎培渝,余红发.混凝土结构早龄期开裂的分析与预测[J].沈阳建筑工程学院学报(自然科学版),2007,23(1):85-87. |
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| 作者姓名： | 王甲春 阎培渝 余红发 |
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| 作者单位： | 沈阳建筑大学材料科学与工程学院，清华大学土木系，南京航空航天大学土木系 辽宁沈阳110168，南京航空航天大学土木系，江苏南京，北京100084，江苏南京 |
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| 基金项目： | 国家高技术研究计划发展专项经费;建设部科研项目 |
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| 摘 要： | 目的预测混凝土结构早龄期开裂的可能性.方法以可靠度理论为基础,建立了混凝土结构早龄期开裂的分析模型,利用开裂概率和临界开裂风险来分析与预测混凝土结构早龄期的开裂情况,并将分析模型在混凝土挡土墙工程中应用.结果混凝土挡土墙分析模型的预测结果与观测结果基本一致.结论应用开裂概率和临界开裂风险来分析与预测混凝土结构早龄期开裂,可以优选混凝土材料的组成,尽量减少混凝土结构早龄期的开裂.
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| 关 键 词： | 混凝土结构 开裂概率 临界开裂风险 早龄期 预测 |
| 文章编号： | 1671-2021（2007）01-0085-03 |
| 修稿时间： | 2006-08-15 |
Analysis and Forecast of Concrete Structure Cracking at arly Age |
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| WANG Jiachun,YAN Peiyu,YU Hongfa.Analysis and Forecast of Concrete Structure Cracking at arly Age[J].Journal of Shenyang Archit Civil Eng Univ: Nat Sci,2007,23(1):85-87. |
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| Authors: | WANG Jiachun YAN Peiyu YU Hongfa |
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| Affiliation: | 1. School of Materials Science and Engineering, Shenyang Jianzhu University, Shengyang 110168, china; 2. Department of Civil Engineering Nanjing University of Aeronautics and Astronautics, Nanjing 210016, china; 3. School of Civil Engineering, Tsinghua University, Beijing 100084, china |
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| Abstract: | The probability of concrete structure cracking at early age is estimated by cracking probability and critical cracking risk with probabilistic method for a real case of concrete wall.The analysis model of cracking is based on the theory of reliability of structures.The sensitivity coefficients calculated by this model can express the influencing efficiency of the temperature change in structure and shrinkage on the cracking of concrete structure in early age.The calculation results show that cracking probability and critical cracking risk can be applied to analysis and forecast of concrete wall cracking.It is helpful to optimize concrete proportion and reduce the concrete structure cracking through the forecast and analysis of concrete structure. |
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| Keywords: | concrete structure cracking probability critical cracking risk early age forecast |
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