Xie, Y.; Li, P.; Xu, S.; Chen, J., and Feng, H., 2021. Failure probability and security risk analysis of gravity-wharf structures in port engineering. Journal of Coastal Research, 37(5), 1035–1041. Coconut Creek (Florida), ISSN 0749-0208.
To assess the security risk of the gravity-wharf overall structure, the failure probability of the overall structure of the gravity wharf is analyzed based on the Rosenblueth method combined with the structural reliability theory. By constructing the serial system of a gravity wharf, a simplified failure model of the overall structure of a gravity wharf is established to obtain the failure probability of the whole wharf structural system. Thus, the security risk assessment of the gravity-wharf structure is realized. The calculation and analysis of the failure risk of a gravity caisson wharf indicates that the reliability index of the gravity-wharf structure at design low water level is much lower than that at design high water level. And at the design low water level, the overall structure has the largest failure probability. The reliability index of antisliding stability of a gravity caisson wharf at design low water level is about 20.6% lower than that at design high water level. And the reliability index of anti-overturning stability at design low water level is about 11.9% lower than that at design high water level. Meanwhile, the failure probability of anti-overturning of the caisson wharf structure is higher than that of antisliding at the same water level. The analysis method in this paper needn't consider the distribution characteristics of each parametric variable, the calculation efficiency of which is high. The analysis conclusions can provide reference for the failure probability and security risk assessment of the gravity-wharf overall structure.