| 既有钢筋混凝土桥梁正常使用极限状态可靠度分析 |
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| 引用本文： | 孙晓燕,黄承逵.既有钢筋混凝土桥梁正常使用极限状态可靠度分析[J].湖南大学学报(自然科学版),2006,33(4):21-25. |
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| 作者姓名： | 孙晓燕 黄承逵 |
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| 作者单位： | 清华大学,土木系,北京,100084;大连理工大学,海洋与近海工程重点实验室,辽宁,大连,116023 |
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| 基金项目： | 辽宁交通科技重点项目(0101) |
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| 摘 要： | 分析了既有钢筋混凝土桥梁正常使用极限状态可靠度分析的特点;研究和讨论了模糊失效界限和荷载等级提高对既有桥梁正常使用极限状态可靠度影响;以钢筋混凝土最大裂缝宽度作为构件正常使用状态的分析对象,建立了混凝土构件在正常使用状态下的极限状态方程,并根据一座实际桥梁的检测资料进行了可靠度计算,讨论了正常使用情况下各个因素对混凝土构件可靠指标的影响.
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| 关 键 词： | 钢筋混凝土 既有桥梁 正常使用极限状态 可靠度 模糊失效边界 |
| 文章编号： | 1000-2472（2006）04-0021-05 |
| 收稿时间： | 12 10 2004 12:00AM |
| 修稿时间： | 2004-12-10 |
Methods of Reliability Analysis Based on Serviceability Limited State for Existing Reinforced Concrete Bridges |
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| SUN Xiao-yan,HUANG Cheng-kui.Methods of Reliability Analysis Based on Serviceability Limited State for Existing Reinforced Concrete Bridges[J].Journal of Hunan University(Naturnal Science),2006,33(4):21-25. |
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| Authors: | SUN Xiao-yan HUANG Cheng-kui |
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| Institution: | 1. Dept of Civil Engineering, Tsinghua Univ, Beijing 100084, China; 2. State Key Laboratory of Coastal and Offshore Engineering, Dalian Univ of Technology, Dalian, Liaoning 116023, China |
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| Abstract: | The reliability of ultimate limit state and serviceability limit state are both important for structure safety evaluation.Sometimes,the reliability of serviceability limit state is the critical target for existing structure in use.Therefore,the characteristics of the reliability analysis on serviceability limited state for existing reinforced concrete bridges were discussed.The effect of the improvement of live load and the difference of fuzzy failure bounds on reliability was studied.With crack width as the analysis parameter of normal limited state,the calculation of a reinforced concrete bridge was demonstrated on the basis of updated inspection information. |
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| Keywords: | reinforced concrete existing bridge serviceability limited state reliability fuzzy failure bound |
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