Abstract Using the Nanjing Weisan Road large-diameter underwater shield tunnel as an example and based on the similarity rule and reliability theory, a service-life prediction was carried out for the tunnel lining in light of its durability design using the Monte Carlo method, Matlab calculation program and two prediction methods: the crack limit and bearing capacity limit criteria. The results show that the lining service life is expected to be 124 years under the crack limit criterion, 9 years less than that under the bearing capacity limit criterion, if the newly built tunnel is in an erosive environment with no protection measures.This meets the requirements for structural applicability and safety regarding the crack and bearing capacity.
Abstract：
Using the Nanjing Weisan Road large-diameter underwater shield tunnel as an example and based on the similarity rule and reliability theory, a service-life prediction was carried out for the tunnel lining in light of its durability design using the Monte Carlo method, Matlab calculation program and two prediction methods: the crack limit and bearing capacity limit criteria. The results show that the lining service life is expected to be 124 years under the crack limit criterion, 9 years less than that under the bearing capacity limit criterion, if the newly built tunnel is in an erosive environment with no protection measures.This meets the requirements for structural applicability and safety regarding the crack and bearing capacity.
.Service Life Prediction for the Lining of a Large-Diameter Underwater Shield Tunnel Based on Reliability Theory[J] MODERN TUNNELLING TECHNOLOGY, 2015,V52(4): 136-142
2015, Vol. 52 