Correlation Distance Calculation on Random Field of the Concrete Bridge Structures
Qiao Huang · Journal of Highway and Transportation Research and Development · 2006
The importance and the theoretical significance of introducing random field theory into bridge structures are depicted in(details),and the calculation of the correlation distance on random field of concrete bridge structures as the base of reliability analysis is also depicted.Taking the bridge of Zhaoyuan as an example,the field stochastic measurement of the bridge strength is conducted,and a lot of data are collected.Based on this,the intensity of the random field of the bridge structure strength is constructed.The stationary and ergodic properties of the intensity of the random field of this bridge are examined.The autocovariance function method and the recurrence(average) method are taken to calculate the correlation distance.The results of these two methods are close,so this correlation distance can be used as the theoretical guidance of engineering application.The correlation distance achieved can be used for other similar bridges.