TY - JOUR
T1 - Life-cycle reliability analysis of shield tunnels in coastal regions
T2 - emphasis on flexural performance of deteriorating segmental linings
AU - He, Zheng Shu
AU - Akiyama, Mitsuyoshi
AU - He, Chuan
AU - Frangopol, Dan M.
AU - Liu, Si Jin
N1 - Funding Information:
The experimental testing of segmental specimens presented in this paper was conducted in the MOE Key Laboratory of Transportation Tunnel Engineering of Southwest Jiaotong University, People?s Republic of China.
Publisher Copyright:
© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2019/7/3
Y1 - 2019/7/3
N2 - In contrast to reinforced concrete (RC) structures on land, RC shield tunnels in coastal regions deteriorate rapidly after their construction because of the combined effects of multiple mechanical and environmental stressors. In this paper, by considering the coastal hazards associated with chloride and the impacts of hydrostatic pressure, a novel approach is presented to estimate the life-cycle structural performance of a shield tunnel that has undergone deterioration due to chloride-induced steel corrosion. Deterioration processes in segmental linings are investigated via corrosion-accelerated experiments on individual segments, and the combined effects of corrosive agents and loads are emphasized. Monte Carlo simulation is used to estimate the time-variant failure probability of shield tunnels in a marine environment. In an illustrative example, the effects of structural location, hydrostatic pressure and material properties on the life-cycle reliability of shield tunnels are investigated.
AB - In contrast to reinforced concrete (RC) structures on land, RC shield tunnels in coastal regions deteriorate rapidly after their construction because of the combined effects of multiple mechanical and environmental stressors. In this paper, by considering the coastal hazards associated with chloride and the impacts of hydrostatic pressure, a novel approach is presented to estimate the life-cycle structural performance of a shield tunnel that has undergone deterioration due to chloride-induced steel corrosion. Deterioration processes in segmental linings are investigated via corrosion-accelerated experiments on individual segments, and the combined effects of corrosive agents and loads are emphasized. Monte Carlo simulation is used to estimate the time-variant failure probability of shield tunnels in a marine environment. In an illustrative example, the effects of structural location, hydrostatic pressure and material properties on the life-cycle reliability of shield tunnels are investigated.
KW - Reinforced concrete shield tunnel
KW - chloride
KW - corrosion initiation
KW - deterioration
KW - hazard assessment
KW - hydrostatic pressure
KW - time-variant failure probability
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U2 - 10.1080/15732479.2019.1578381
DO - 10.1080/15732479.2019.1578381
M3 - Article
AN - SCOPUS:85062774621
VL - 15
SP - 851
EP - 871
JO - Structure and Infrastructure Engineering
JF - Structure and Infrastructure Engineering
SN - 1573-2479
IS - 7
ER -