SFTWhen is SFT compeWhwhwen is SFT competitivetitive
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Procedia
Engineering
Procedia Engineering 2 (2010) 000–000 www.elsevier.com/locate/procedia Procedia Engineering 4 (2010) 3–11 www.elsevier.com/locate/procedia ISAB-2010
When is SFT competitive?
Håvard Østlid*
Norwegian Public Roads Administration, PO Box 8142 Dep, N-0033 Oslo, Norway
Received 8 July 2010; revised 29 July 2010; accepted 30 July 2010
Abstract
When is a Submerged Floating Tunnel competitive?The various elements in transport systems are most often selected on the basis of the lowest price for the alternatives being viaducts, bridges or tunnels or some combinations of these.
The submerged floating tunnel will therefore have to compete with well known structures and therefore have a disadvantage since no submerged floating tunnel has yet to be built.
A future owner is then faced with a risk not easily estimated on one hand, on the other hand this new alternative may have certain attractive features especially when environmental considerations become important.
This paper presents these various advantages and also points out some obvious disadvantages with this new and challenging structure. A great step forward would be if a submerged floating tunnel were built somewhere. The proposed structure here in China would certainly generate a lot of interest and I suggest the involved parties should prepare for a large number of visitors.
© 2010 Published by Elsevier Ltd. Open access under CC BY-NC-ND license.
Keywords: Submerged Floating Tunnel; Archimedes Bridge
1. Introduction
The submerged floating tunnel, SFT, also named as Archimedes Bridge, is a concept going back at least 150 years and probably even further back. Historic records show that a rather complete understanding of this idea was brought forward by Sir James Reed, UK in 1886 and later in 1924 by Trygve Olsen Dale, Norway.
During the last part of 1960 a renewed interest in SFT was followed up by the start of some minor research projects and during
Procedia
Engineering
Procedia Engineering 2 (2010) 000–000 www.elsevier.com/locate/procedia Procedia Engineering 4 (2010) 3–11 www.elsevier.com/locate/procedia ISAB-2010
When is SFT competitive?
Håvard Østlid*
Norwegian Public Roads Administration, PO Box 8142 Dep, N-0033 Oslo, Norway
Received 8 July 2010; revised 29 July 2010; accepted 30 July 2010
Abstract
When is a Submerged Floating Tunnel competitive?The various elements in transport systems are most often selected on the basis of the lowest price for the alternatives being viaducts, bridges or tunnels or some combinations of these.
The submerged floating tunnel will therefore have to compete with well known structures and therefore have a disadvantage since no submerged floating tunnel has yet to be built.
A future owner is then faced with a risk not easily estimated on one hand, on the other hand this new alternative may have certain attractive features especially when environmental considerations become important.
This paper presents these various advantages and also points out some obvious disadvantages with this new and challenging structure. A great step forward would be if a submerged floating tunnel were built somewhere. The proposed structure here in China would certainly generate a lot of interest and I suggest the involved parties should prepare for a large number of visitors.
© 2010 Published by Elsevier Ltd. Open access under CC BY-NC-ND license.
Keywords: Submerged Floating Tunnel; Archimedes Bridge
1. Introduction
The submerged floating tunnel, SFT, also named as Archimedes Bridge, is a concept going back at least 150 years and probably even further back. Historic records show that a rather complete understanding of this idea was brought forward by Sir James Reed, UK in 1886 and later in 1924 by Trygve Olsen Dale, Norway.
During the last part of 1960 a renewed interest in SFT was followed up by the start of some minor research projects and during
References: [1] Hong Y, Ge F, Long X. Researches on essential mechanics issues for submerged floating tunnel. Proceedings of the fift Symposium on Strait Crossings, Trondheim, Norway, 2009; p. 251-6. [2] Long X, Ge F, Wang L, Hong Y. Effects of fundamental structure parameters on dynamic responses of submerged floating tunnel under hydrodynamic loads. Acta Mech Sinica 2009; 25: 335-44. [3] Ge F, Long X, Wang L, Hong Y. Flow-induced vibrations of long circular cylinders modeled by coupled nonlinear oscillators. Sci China, Series G - Phy Mech & Astronomy 2009; 52: 1086-93. [4] Immersed and Floating Tunnels. Tunnelling and Underground Space Technology. Vol 8, Number 2, April 1993. ISSN 0886-7798 (799). [5] 5th Symposium on Strait Crossings: Trondheim, Norway, 2009..