Life-cycle reliability analysis of shield tunnels in coastal regions: emphasis on flexural performance of deteriorating segmental linings

Zheng Shu He, Mitsuyoshi Akiyama*, Chuan He, Dan M. Frangopol, Si Jin Liu

*この研究の対応する著者

研究成果: Article査読

6 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)851-871
ページ数21
ジャーナルStructure and Infrastructure Engineering
15
7
DOI
出版ステータスPublished - 2019 7 3

ASJC Scopus subject areas

  • 土木構造工学
  • 建築および建設
  • 安全性、リスク、信頼性、品質管理
  • 地盤工学および土木地質学
  • 海洋工学
  • 機械工学

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