| 既有钢筋混凝土梁时变可靠度计算模型 |
| |
| 引用本文： | 郑怡,刘明,沈小俊,张延年.既有钢筋混凝土梁时变可靠度计算模型[J].交通运输工程学报,2009,9(2). |
| |
| 作者姓名： | 郑怡 刘明 沈小俊 张延年 |
| |
| 作者单位： | 郑怡,ZHENG Yi(重庆交通大学,结构工程重点实验室,重庆,400074;沈阳建筑大学,土木工程学院,辽宁,沈阳,110168;大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024);刘明,LIU Ming(沈阳建筑大学,土木工程学院,辽宁,沈阳,110168;大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024);沈小俊,SHEN Xiao-jun(重庆市公路工程质量检测中心,重庆,400060);张延年,ZHANG Yan-nian(沈阳建筑大学,土木工程学院,辽宁,沈阳,110168)
|
| |
| 基金项目： | 重庆交通大学结构工程重点实验室开放基金，沈阳建筑大学结构工程省级重点实验室开放基金，国家科技支撑计划 |
| |
| 摘 要： | 分析了目前既有结构时变可靠度计算理论和现行规范计算公式,考虑混凝土损伤和钢筋锈蚀以及材料强度随时间劣化的情况,建立了既有钢筋混凝土梁(单筋矩形截面、双筋矩形截面和T形截面)的时变抗力计算模型,给出了既有钢筋混凝土梁的时变可靠度指标,并通过工程实例对既有钢筋混凝土梁进行了加固前计算分析.结果表明:实例结构动态可靠度指标为1.56,承载能力属于d级,这与现行可靠性鉴定标准的评级相吻合,因此,计算模型合理可靠.
|
| 关 键 词： | 桥梁工程 既有钢筋混凝土梁 时变可靠度 可靠性鉴定 抗力退化 |
Calculating models of time-dependent reliability for existing reinforced concrete beam |
| |
| ZHENG Yi,,LIU Ming,SHEN Xiao-jun,ZHANG Yan-nian.Calculating models of time-dependent reliability for existing reinforced concrete beam[J].Journal of Traffic and Transportation Engineering,2009,9(2). |
| |
| Authors: | ZHENG Yi LIU Ming SHEN Xiao-jun ZHANG Yan-nian |
| |
| Institution: | 1.Key Laboratory of Structural Engineering;Chongqing Jiaotong University;Chongqing 400074;China;2.School of Civil Engineering;Shenyang Jianzhu University;Shenyang 110168;Liaoning;3.State Key Laboratory of Coastal and Offshore Engineering;Dalian University of Technology;Dalian 116024;4. Center of Highway Engineering Test of Chongqing;Chongqing 400060;China |
| |
| Abstract: | The current theory of time-dependent reliability for existing structures and the calculating formula in current standard were analyzed. Considering the condition of material strength deterioration with time and the damages of concrete and steel, time-dependent strength calculating models were built for single-side reinforced concrete beam with rectangular section, double reinforced concrete beams with rectangular section and T-shape section. The time-dependent reliability index was put forward, and an engin... |
| |
| Keywords: | bridge engineering existing reinforced concrete beam time-dependent reliability reliability appraisal resistance deterioration |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
