| 混凝土梁腐蚀环境下疲劳可靠性分析 |
| |
| 引用本文： | 商艳,许波,陈华.混凝土梁腐蚀环境下疲劳可靠性分析[J].低温建筑技术,2012,34(11):23-25. |
| |
| 作者姓名： | 商艳 许波 陈华 |
| |
| 作者单位： | 1. 内蒙古大学鄂尔多斯学院土木工程系,内蒙古鄂尔多斯,017000
2. 鄂尔多斯市东方路桥集团股份有限公司,内蒙古鄂尔多斯,017000 |
| |
| 摘 要： | 在试验的基础上研究了腐蚀环境下预应力混凝土梁疲劳可靠度的影响因素,根据极限应力模式提出了材料的极限状态方程并运用累积损伤理论和一次二阶矩法求解其疲劳可靠度指标。分析表明,预应力钢筋的腐蚀率及疲劳荷载的应力比对预应力混凝土梁疲劳可靠度影响大。
|
| 关 键 词： | 预应力混凝土梁 腐蚀 疲劳 可靠度指标 |
ANALYSIS ON FATIGUE RELIABILITY OF CONCRETE BEAM IN CORROSIVE ENVIRONMENT |
| |
| SHANG Yan
,
XU Bo
,
CHEN Hua.ANALYSIS ON FATIGUE RELIABILITY OF CONCRETE BEAM IN CORROSIVE ENVIRONMENT[J].Low Temperature Architecture Technology,2012,34(11):23-25. |
| |
| Authors: | SHANG Yan XU Bo CHEN Hua |
| |
| Affiliation: | 1. Department of Civil Engi. , Ordos college of Inner Mongolia Univ. , Inner Mongolia Ordos 017000, China; 2. DongFang Road-bridge Group Shares Limited Company, Inner Mongolia Ordos 017000, China) |
| |
| Abstract: | Based on the experiment, this paper studies the problem of fatigue reliability of the struc- ture of prestressed concrete beam in corrosive environment, brings up a material limit state equation ac- cording to the material limit stress model and solves the fatigue reliability index with accumulate damage theory method and LOSM method. The analysis showed that the corrosion rate of prestressed steel and the stress ratio of fatigue loading have great effect on fatigue reliability. |
| |
| Keywords: | prestressed concrete beam corrosion fatigue reliability index |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
