摘要
在验证荷载法基本理论基础之上,将抗力随时间的衰减考虑进来。讨论了在两种不同抗力衰减模型下,验证荷载对结构抗力的时效影响。根据公式推导结合理论分析,得出了验证荷载在抗力概率密度函数中的截尾面积不随时间和抗力衰减而变化的结论,为将利用验证荷载对既有结构进行可靠性评定的方法推广为更为广泛的基于结构承载历史的既有结构可靠性评定的方法打下了一定的理论基础。
Based on the theory of proof load method, the resistance decay with time is considered. The time -influence of structure resistance on proof load under two different degenerate models is discussed. According deducing and theoretic analysis, the conclusion that the area proof load cuts off in the tail of resistance＇s probability density was not changed by time and the attenuation of resistance. The proof load the reliability evaluation methods of existing structure promote a theoretical foundation for a wider existing structure reliability assessment method.
出处
《铜业工程》
CAS
2012年第5期49-52,共4页
Copper Engineering
关键词
验证荷载
抗力衰减模型
结构可靠度
截尾面积
时效影响
proof load
the attenuation model of resistance
structure reliability
truncation area
time - influence
