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| 砼梁时变结构可靠度计算及其敏感性分析 | |
| 引用本文： | 朱平华,陈华建,李懿,蒋沧如. 砼梁时变结构可靠度计算及其敏感性分析[J]. 武汉理工大学学报, 2004, 26(5): 55-57 |
| 作者姓名： | 朱平华 陈华建 李懿 蒋沧如 |
| 作者单位： | 1. 武汉理工大学土木工程与建筑学院,武汉,430070;扬州职业大学建筑系,扬州,225002 2. 武汉理工大学土木工程与建筑学院,武汉,430070 3. 鄂州建设工程质量监督检测站,鄂州,436000 |
| 基金项目： | 国家“973”攻关项目 (2 0 0 1.7B6 10 70 4 - 3) |
| 摘 要： | 研究了在钢筋与砼的强度随时间而衰减的情况下，砼梁的时变可靠度及其对各随机变量的敏感度。结果表明：严格按照现行砼结构设计规范设计的梁，其可靠指标不一定满足目标可靠度的要求，甚至会出现承载力抗剪指标小于抗弯指标的情况；与非时变相比，对应的时变结构可靠度均有不同程度的降低，而对各随机变量的敏感度基本不变。 |
| 关 键 词： | 敏感度 时变可靠度 砼梁 |
| 文章编号： | 1671-4431(2004)05-0055-03 |
| 修稿时间： | 2004-02-09 |
Research on Time-dependent Reliability of Reinforced Concrete Beam and Sensitivity Analysis Thereof on Random Variances |
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| ZHU Ping-hua ,,CHEN Hua-jian ,LI Yi ,JIANG Cang-ru. Research on Time-dependent Reliability of Reinforced Concrete Beam and Sensitivity Analysis Thereof on Random Variances[J]. Journal of Wuhan University of Technology, 2004, 26(5): 55-57 | |
| Authors: | ZHU Ping-hua CHEN Hua-jian LI Yi JIANG Cang-ru |
| Affiliation: | ZHU Ping-hua 1,2,CHEN Hua-jian 1,LI Yi 3,JIANG Cang-ru 1 |
| Abstract: | This is the research on the time-dependent reliability of reinforced concrete beam and sensitivity analysis thereof on random variances under reducing strengths of reinforcement over time. The results showed that it is not possible to attain the appointed reliability indexes even though the flexural beam is designed according to the current procedure. Moreover,there may be a case that the shear indexes are smaller than the flexural indexes. Comparing the reliability of the reinforced concrete beam without time-dependent and with time-dependent,the one with time-dependent has reliability that is much lower and the sensitivity on random variances remains almost same. |
| Keywords: | sensitivity time-dependent reliability reinforced concrete beam |
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