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| 基于可靠度的寒冷地区混凝土桥梁碳化寿命分析 | |
| 引用本文： | 孙晓燕,孙保沭,黄承逵,史波.基于可靠度的寒冷地区混凝土桥梁碳化寿命分析[J].中国矿业大学学报,2005,34(4):458-461. |
| 作者姓名： | 孙晓燕 孙保沭 黄承逵 史波 |
| 作者单位： | 1. 清华大学,土木水利学院,北京,100084 2. 华北水利水电学院,水利系,河南,郑州,450008 3. 大连理工大学,土木水利学院,辽宁,大连,116023 |
| 基金项目： | 辽宁省交通科技重点项目(0101) |
| 摘 要： | 讨论了混凝土的碳化影响因素和碳化深度模型，给出了适用于寒冷地区混凝土桥梁的碳化时变随机模型，以混凝土碳化至钢筋表面作为结构耐久性失效的极限状态，建立了混凝土桥梁碳化时变可靠度分析及剩余寿命预测模型，提供了实用的分析和计算方法，并以一座现有钢筋混凝土桥梁为例，对其进行碳化可靠度分析及剩余寿命评估，该方法得到的结论对实际桥梁的耐久性评价和桥梁日常维护决策提供了重要的依据和参考作用。 |
| 关 键 词： | 混凝土桥梁 混凝土碳化 寒冷地区 剩余寿命 时变可靠度 |
| 文章编号： | 1000-1964(2005)04-0458-04 |
| 修稿时间： | 2004年11月30 |
Carbonization Reliability Assessment and Lifetime Prediction for Reinforced Concrete Bridges in Cold Area |
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| SUN Xiao-yan,SUN Bao-shu,HUANG Cheng-kui,SHI Bo.Carbonization Reliability Assessment and Lifetime Prediction for Reinforced Concrete Bridges in Cold Area[J].Journal of China University of Mining & Technology,2005,34(4):458-461. | |
| Authors: | SUN Xiao-yan SUN Bao-shu HUANG Cheng-kui SHI Bo |
| Affiliation: | SUN Xiao-yan~1,SUN Bao-shu~2,HUANG Cheng-kui~3,SHI Bo~3 |
| Abstract: | The mechanism of concrete carbonization and the model of carbonization depth of reinforced concrete structures were discussed. A model of concrete carbonization depth that is suitable for reliability analysis of reinforced concrete bridges in cold area was established. Reliability analysis and residual lifetime prediction based on concrete carbonization were presented, with the state while concrete carbonization reaches the surface of the reinforcement as the durability limit state. The calculation methods were also given. A practical reinforced concrete bridge was taken as an example to estimate the reliability of carbonization and the residual carbonization lifetime. The results can be used as a guide for durability assessment and maintenance strategy for deteriorating reinforced concrete bridges. |
| Keywords: | reinforced concrete bridge concrete carbonization cold area residual lifetime time-dependent reliability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |