Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The 7-mile long Flathead Tunnel in northwestern Montana was required in relocation of Great Northern Railway's main line track prior to impounding water by Libby Dam. Approximately 73% of the tunnel required structural steel tunnel sets for temporary support prior to the placement of concrete lining. A sliding floor, large special tunnel equipment, contractor initiated design changes to eliminate special trim and trench excavation, and laser survey alignment methods all contribute to a high speed excavation operation. Elimination of regularly spaced wall and arch contraction joints with waterstop through a value engineering proposal made a continuous lining operation possible. The conveyor placing system delivered concrete up to tunnel springline through form doors while the pump filled the tunnel arch.
The 7-mile long Flathead Tunnel in northwestern Montana was required in relocation of Great Northern Railway's main line track prior to impounding water by Libby Dam. Approximately 73% of the tunnel required structural steel tunnel sets for temporary support prior to the placement of concrete lining. A sliding floor, large special tunnel equipment, contractor initiated design changes to eliminate special trim and trench excavation, and laser survey alignment methods all contribute to a high speed excavation operation. Elimination of regularly spaced wall and arch contraction joints with waterstop through a value engineering proposal made a continuous lining operation possible. The conveyor placing system delivered concrete up to tunnel springline through form doors while the pump filled the tunnel arch.
Flathead Railroad Tunnel
Sacrison, Hans (Autor:in)
Journal of the Construction Division ; 97 ; 127-145
01.01.2021
191971-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Online Contents | 1995
| Engineering Index Backfile | 1894
Tough specs for flathead Lake bridge
Engineering Index Backfile | 1965
| Engineering Index Backfile | 1945