Deterioration Model For Resistance Of Existing Structures And Its Numeration Of Reliability

The analysis of reliability of existing structures is in allusion to the personal component mostly,and the resistance model is melted into the random variables sometimes.Also the resistance of structures is not changed along with the time change.but people sometimes consider the existing group of component as a integer when assessing one group of component in the real work of the assessing of the dependability of the structure.Therefore researching the reliability of a group of component of existing structures is more meaning to instructing engineering practice.The paper aiming at the demands of the analysis of the existing group of components build degradation models leave each other to the personal component and a group of component using independ increment model of the structure resistances.On the condition that consider the measurement error of the current resistance of existing structure and uncertainty of account model,receive some Stat.parameter of the condition that degradation of existing group of components with the connection of existing structures to coming structures and resistance durable time variation model of one qene.When analyse the reability of the existing group of components ,firstly the resistance is scattered along with the loads having different frequency in the design datum time,and the non-stationary is changed stationary in the accounting reliablility.The numeration of time-variation reliability of existing group of component is considered as the one of serieswound system of existing component with the structure system reliability ,and gained reliability guide line.In this process of numeration ,the difficulty is fell across of multi dimensional integral.Considering different load having different frequency in the design datum time,on the condition that the resistance degradation along with the time changing,advise a numeration about the reliability of non-stationary random process.The production of this paper provides a way to accounting reliability anon, At the same time offers evidence of appraising and reinforcing a group of component.