摘要
文中应用可靠性研究方法,在讨论混凝土疲劳寿命概率分布的基础上,进行了载荷与寿命关系的试验研究,求出了混凝土P-S-N曲线,得到了对数中值寿命、90%存活率及疲劳寿命的分散性随负荷增加的变化规律,从而为可靠性设计奠定了基础。
Fatigue reliability of concrete construction is important in modern engineering design. Wohler fatigue curve is a kind of important basic design data and concrete fatigue life is scattered owing to probabilistic distribution of concrete fatigue life. The relationship between load and life is investigated. P-S-N curve of concrete is obtained. Variation regularity for logarithm mid-life, 90% secure rate and fatigue life dispersion with load increase is derived. Therefore, reliability design can be successfully done.
出处
《江南大学学报（自然科学版）》
CAS
2009年第3期327-330,共4页
Joural of Jiangnan University (Natural Science Edition)
基金
云南省自然科学基金项目(97E045M)
云南省自然科学基金重点项目(98E004Z)
关键词
混凝土
P-S-N曲线
可靠性
疲劳寿命
概率分布
疲劳统计
concrete, P-S-N curve, reliability, fatigue life, probabilistie distribution, fatigue statistics
