2010, Volume 12, Issue 3
Strategic Study of CAE >> 2010, Volume 12, Issue 3
Fully stochastic analysis method for structural time-independent reliability
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
Next Previous
Abstract
In order to effectively evaluate existed bridges' reliability, the effect of bridge service time on bridge reliability was considered. To extend the so-called semi-stochastic process model for specified in the design code in analysis reliability for existing structure, assuming that the structural resistances and the action effects are independent, based on the characteristics of the resistance and action effects variation with time, considering the resistance is an independent increment process and calculating the self-revelation coefficient of resistance, an approximate algorithm of failure probability was developed. And a fully stochastic process model was developed to analysis time-dependent reliability. Through the example,this method is simple and convenient and can supply a basis for structural assessment and service life prediction.
Keywords
existing structure ; stochastic process ; time-dependent reliability ; action effects ; resistance deterioration
Figures
图1
图2
图3
References
[ 1 ] Geidl V, Aaunders S.Calculation of reliability for time -varying loads and resistances [ J] .Structural Safety,1987 ,4 ( 4 ) :44 -48 link1
[ 2 ] Mori Y, Ellingwood R.Time -dependent system reliability analy- sis by adaptive importance sampling [ J] .Structural Safety,1993 , 12 ( 1 ) :59 -73 link1
[ 3 ] 贡金鑫.钢筋混凝土结构基于可靠度的耐久性分析[D].大连:大连理工大学,1999 link1
[ 4 ] 刘西拉.结构工程学科现状与未来[M].北京:人民交通出版社,1997
[ 5 ] 中国建筑工业出版社.建筑结构可靠度设计统一标准GB50068-2001.[S].北京:中国建筑工业出版社,2001
[ 6 ] 李桂青,李秋胜.工程结构时变可靠度理论及其应用[M].北京:科学出版社,2003
[ 7 ] 张俊芝.在役工程结构和工程系统可靠性理论及应用[D].武汉:武汉理工大学,2001
[ 8 ] “八五”国家科技攻关专题(85-924-01-04-02).服役结构抗力衰减模型与可靠性研究[R].西安:西安建筑科技大学,1995
京公网安备 11010502051620号
