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Review on the buoyancy effect of the multi purpose double-deck tunnels during operation
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 Title & Authors
Review on the buoyancy effect of the multi purpose double-deck tunnels during operation
Kim, Ho-jong; Kim, Hyeon-ah; Joo, Eun-jung; Shin, Jong-ho;
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Double-deck tunnels beneath the groundwater table have relatively large volume and commonly constructed as watertight tunnels. In this case, it requires to secure stability of the tunnels for buoyant force. Generally the contact force between lining and ground is sufficient to resist the buoyant force. However in the long-term the contact force could be reduced because of structural deterioration. In this study the effect of long-term buoyant force acting on the double-deck tunnel is investigated. The results has shown that the buoyant force has increased invert deformation and stress. It is indicated that the contact resilience between lining and ground needs to be kept during tunnel operation.
Double-deck tunnel;Lining;Buoyant force;Stress-pore pressure coupled analysis;Ground stiffness;
 Cited by
다목적 복층터널의 기능전환과 지하수위 변화에 따른 거동분석,박노현;김호종;신종호;

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