A Scale Model Test on Hydraulic Resistance of Tunnel Elements during Floating Transportation

Article Preview

Abstract:

The transportation of tunnel elements is one of the most important procedures of immersed tunnel construction. To investigate the hydraulic resistance of tunnel elements during transportation, hydrodynamic scale model tests of the were carried out in a towing tank for the tunnel element transportation under wave action. The test results show that the hydraulic resistance is linear to the square of towing speed basically. The drag coefficients of the element under different water depths and dragging angles are calculated. The dragging coefficient decreases with the increase of water depth, and increases with the increase of the dragging angle. Finally, the influence of the wave is also discussed for the tunnel dragged in the open sea.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 919-921)

Pages:

841-845

Citation:

Online since:

April 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] Molenaar, V.L. 1993. Construction Techniques. State of the Art Report in Immersed and Floating Tunnels. Tunnelling and Underground Space Technology, 8, 2, 141-159.

DOI: 10.1016/0886-7798(93)90093-b

Google Scholar

[2] Lv W., Ying Z., Wu R. et al. 2013 An analytical study on the hydraulic resistance for the immersed tunnel elements during transportation for the project of Hong Kong-Zhuhai-Macao Bridge. Proceedings of the World Tunnel Congress 2013. Geneva. pp.778-785.

DOI: 10.1201/b14769-107

Google Scholar

[3] Jensen, O.L., Olsen T.H., Kim C.W. Heo J.W. et al. 2007. Construction of immersed tunnel in off-shore wave conditions Busan-Geoje project South Korea. IABSE Symposium, Weimar 2007 , 8, 25-32.

DOI: 10.1016/j.tust.2005.12.047

Google Scholar

[4] Cozijn, H. Jin W. H.Analysis of the Tunnel Immersion for the Busan-Geoje Fixed Link Project Through Scale Model Tests and Computer Simulations[C]. Proceedings of the ASME 28th International Conference on Ocean, Offshore and Arctic Engineering, (2009).

DOI: 10.1115/omae2009-79385

Google Scholar

[5] Pan, Y.R. 2004. The Floating Transport Methods of Large Element Employed for Shanghai Out-ring Immersed Tube Tunnel. Construction Technology, 33 , 5, 52-54 (in Chinese).

Google Scholar