全部

力学与实践 ›› 2002, Vol. 24 ›› Issue (1): 0-0.doi: 10.6052/1000-0992-2000-255

• 应用研究 •    

谱荷载下剩余强度衰减的混凝土疲劳寿命可靠性分析

赵造东 张立翔 王时越   

  1. 昆明理工大学新迎校区工程力学系 650051 13987699941 昆明理工大学新迎校区工程力学系 650051 13987699941 昆明理工大学新迎校区工程力学系 650051 13987699941
  • 收稿日期:2000-08-14 修回日期:1900-01-01 出版日期:2002-02-10 发布日期:2002-02-10

RELIABILITY ANALYSIS OF CONCRETE FATIGUE LIFE UNDER SPECTRUN LOAD BASED ON RESIDUAL STRENGTH DEGRADATION

  • Received:2000-08-14 Revised:1900-01-01 Online:2002-02-10 Published:2002-02-10

摘要: 在S-N曲线的基础上,建立了一个描述混凝土剩余强度衰减的模型,并利用该模型对在谱荷载作用下混凝土试件的疲劳寿命及其可靠性进行了分析,得到疲劳寿命基于三参数Weibull分布的分布函数.通过试验验证了该方法得出的结果是可靠的,且计算简便,便于在工程中应用.

关键词: S-N曲线,疲劳寿命,剩余强度,谱荷载

Abstract: Based on the concrete $S$-$N$ curve, a model of residual strength degradation is established in this paper, and then both the fatigue life and its reliability are modeled and analyzed by using this degradation model and the three-parameter Weibull distribution under spectrum loading. The experiments show that the present method is reliable, the analysis and calculation is simple and effective.

Key words: S-N curve, fatigue life, residual strength, spectrum load