A Comprehensive Reliability Assessment Method for Existing Railway Bridges Based on Bayesian Theory

Table 6

Root node occurrence probability grade standard.

Probability rating	Probability interval	Probability center value	State description
1			An almost impossible event during the service of a railway bridge
2			Less frequent incidents during the service of a railway bridge
3			Occasional incidents during the service of a railway bridge
4			A frequent occurrence during the service of a railway bridge
5			A large number of incidents occurred during the service of a railway bridge