Abstract：According to the serviceability limit state features of operating highway tunnel linings, the limit states for maximum crack width of reinforced concrete eccentric compression members are studied and a fuzzy stochastic reliability analysis method for the serviceability limit state of linings is established. In the proposed method, the resistance fuzziness and the load effect randomness are considered. The reliability of maximum crack width for the linings of a level Ⅲ(class Ⅳ) subsea tunnel is calculated. The conclusions show that: （1）The bounds of the fuzzy failure criterion should be confirmed by the crack width values in the specifications, which consider the importance coefficient of structure safety, the environment around the structure and the load conditions, etc. (2) For the maximum width the crack occurs in the vault of lining from the left hole section in class IV. Surrounding rocks in some sea area around a subsea tunnel, if the failure probability equals to 0.194 (pf=0.194) and is less than 50%, the serviceability requirements can be meet; (3) When the maximum width of the crack occurs at the haunch of lining from the left hole section in class Ⅳ surrounding rocks in some sea area around a subsea tunnel, if the failure probability equals to 0.322 (pf=0.322) and is less than 50%, the serviceability requirements can be meet.
