| 钢筋混凝土界面的疲劳损伤 |
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| 引用本文： | 陈艳华,石志飞. 钢筋混凝土界面的疲劳损伤[J]. 中国安全科学学报, 2003, 13(9): 78-80 |
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| 作者姓名： | 陈艳华 石志飞 |
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| 作者单位： | 北京交通大学土木建筑工程学院 |
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| 基金项目： | 国家自然科学基金资助(59778034),国家教育部优秀青年教师教学和科研奖励计划资助. |
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| 摘 要： | 钢筋与混凝土界面的脱粘是钢筋混凝土材料与结构的主要失效形式之一。针对笔者建立的几何剪切筒模型和选取的常用实验加载方式 ,推导出循环荷载作用下钢筋与混凝土界面脱粘应力解析模型 ,借助断裂力学的基本理论 ,进一步研究和分析了界面疲劳脱粘速率及界面摩擦剪应力与循环加载次数的关系 ,同时考虑了泊松比对疲劳特性的影响 ,为混凝土结构的安全评估提供一个新思路。
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| 关 键 词： | 钢筋混凝土界面 脱粘 疲劳损伤 泊松比 安全评估 |
| 修稿时间： | 2002-12-01 |
Fatigue Damage at Reinforced Concrete Interface |
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| Chen Yanhua Shi Zhifei,Prof.. Fatigue Damage at Reinforced Concrete Interface[J]. China Safety Science Journal, 2003, 13(9): 78-80 |
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| Authors: | Chen Yanhua Shi Zhifei Prof. |
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| Abstract: | Interfacial debonding is one of the main damage forms of reinforced concrete materials and structures. According to the geometrical shear lag model established by authors and the usual loading way selected, an analytical model of interfacial debonding stress under cyclic loading is derived. Referring to basic theory of elastic and fracture mechanics, the relationships between the interfacial debonding rate, debonding stress and the times of cyclic loading are studied. At the same time, the effect of Poisson ratio on fatigue properties is considered. The result provides a new idea for studying the fatigue reliability of concrete structure. |
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| Keywords: | Reinforced concrete interface Debonding Fatigue damage Poisson ratio Safety evaluation |
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