| 腐蚀环境下钢筋混凝土结构疲劳可靠度的分析方法 |
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| 引用本文： | 贡金鑫,赵国藩.腐蚀环境下钢筋混凝土结构疲劳可靠度的分析方法[J].土木工程学报,2000,33(6):50-56. |
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| 作者姓名： | 贡金鑫 赵国藩 |
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| 作者单位： | 大连理工大学 |
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| 基金项目： | 国家自然科学基金(50078009)和中国博士后基金资助项目 |
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| 摘 要： | 疲劳分析与验算是承受反复荷载作用结构设计的重要内容之一,相应的可靠度为疲劳可靠度.当结构处于腐蚀环境时,由于腐蚀介质的侵蚀,结构疲劳性能的降低要比静态性能的降低明显.本文研究了腐蚀环境下钢筋混凝土结构的疲劳可靠度问题,提出了相应的计算方法.计算表明,依赖于钢筋的锈蚀程度,钢筋混凝土结构的疲劳可靠度有不同程度的下降.
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| 关 键 词： | 钢筋混凝土结构 腐蚀 疲劳 可靠度 |
| 修稿时间： | 1999年6月1日 |
FATIGUE RELIABILITY ANALYSIS FOR CORRODED REINFORCED CONCRETE STRUCTURES |
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| Gong Jinxin,Zhao Guofan.FATIGUE RELIABILITY ANALYSIS FOR CORRODED REINFORCED CONCRETE STRUCTURES[J].China Civil Engineering Journal,2000,33(6):50-56. |
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| Authors: | Gong Jinxin Zhao Guofan |
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| Affiliation: | Dalian University of Technology |
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| Abstract: | The characteristics of the loads and the materials have a some random appearances. The fatigue reliability analysis is used to assess the safety of a reinforced concrete structure subjected to a repeated load. The fatigue performance of the reinforced concrete structures is deteriorated severely as a result of the corrosion of the steel ha. The corrosion not only decreases an effective area of a steel bar but also causes a stress concentration. It is necessary to consider the time-dependent characteristic of a fatigue of the structures. The Poisson stochastic process theory and the Palmgren-Miner rule are adopted to describe the loads and the materials. The results show that the fatigue reliability decreases extensively with the increasing of the corrosion rate. |
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| Keywords: | reinforced concrete structures corrosion fatigue reliability |
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