| 混凝土结构裂缝宽度限值研究综述 |
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| 作者单位： | ;1.中国铁道科学研究院研究生部;2.中国铁道科学研究院铁道建筑研究所 |
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| 摘 要： | 随着我国铁路建设的迅速发展,铁路混凝土结构服役环境由一般转向特殊。为了研究特殊环境(如大风干旱)下混凝土结构裂缝宽度限值,以混凝土结构设计及耐久性设计规范的发展阶段为主线,介绍发达国家和我国在不同时期混凝土结构裂缝宽度限值的发展历史,分析混凝土结构裂缝宽度限值的影响因素和发展趋势,得出裂缝宽度限值正逐步放宽的结论。
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| 关 键 词： | 混凝土结构 裂缝 裂缝宽度限值 |
General Review of Limit Value of Maximum Crack Width for Concrete Structures |
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| Institution: | ,Postgraduate school,China Academy of Railway Science,Institute of railway engineering,China Academy of Railway Science |
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| Abstract: | The service environment of railway concrete structures turn from general to special with the rapid development of railway construction in our country. In order to study the limit value of maximum crack width for concrete structures in special environments,such as high windy and drought,this paper introduces the history of the limit value of maximum crack width for concrete structures applied in developed countries and China in different period of time according to the development of codes of concrete in terms of structures and durability. The influencing factors and tendencies related to the matter are also analyzed. Then the conclusion is reached to relax the limit value of maximum crack width step by step. |
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| Keywords: | Concrete structures Crack limit value of maximum crack width |
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