Islisberg Tunnel - Marti Holding AG
Islisberg Tunnel - Marti Holding AG
Islisberg Tunnel - Marti Holding AG
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Client<br />
Design<br />
Contractor<br />
Joint Venture Partners<br />
Managing Contractor and<br />
Technical Management<br />
Financial Management<br />
<strong>Islisberg</strong> <strong>Tunnel</strong><br />
Department of Public Works Canton Zurich<br />
Engineering Joint Venture N4.1.6<br />
– Electrowatt Infra <strong>AG</strong>, Zurich<br />
– Dr. Vollenweider <strong>AG</strong>, Zurich und Rapperswil<br />
– Ernst Winkler + Partner <strong>AG</strong>, Effretikon<br />
IBT Joint Venture<br />
<strong>Marti</strong> <strong>Tunnel</strong>bau <strong>AG</strong>, Berne<br />
<strong>Marti</strong> <strong>AG</strong>, Bauunternehmung, Zurich<br />
Ed. Züblin <strong>AG</strong>, Niederlassung <strong>Tunnel</strong>bau<br />
<strong>Marti</strong> <strong>Tunnel</strong>bau <strong>AG</strong>, Berne<br />
<strong>Marti</strong> <strong>AG</strong>, Bauunternehmung, Zurich<br />
<strong>Marti</strong> <strong>Holding</strong> <strong>AG</strong><br />
Bauunternehmungen<br />
<strong>Marti</strong> <strong>Holding</strong> <strong>AG</strong> Bauunternehmungen<br />
Freiburgstrasse 133 CH-3000 Berne 5 Telephone +41 31 388 75 75 Fax +41 31 388 75 01<br />
www.martiag.ch info@martiag.ch
Project<br />
A4 Autobahn road tunnel,<br />
West Uetliberg – Knonau Section, <strong>Islisberg</strong> <strong>Tunnel</strong><br />
– 2 tubes of length 4,950 m<br />
– Excavated cross section = 110 m 2<br />
– 3 ventilation centres north, south, middle<br />
– 15 cross tunnels, of these 5 are passable<br />
Geology: upper Zurich fresh water molasses<br />
Construction Period<br />
2003–2008<br />
Contract Sum<br />
CHF 235 million<br />
Services<br />
TBM drive Ø 11.86 m with prefabricated segmental lining<br />
Interior work: prefabricated services duct elements,<br />
pvc-waterproofing, concrete inner lining and suspended<br />
ceiling.<br />
Jetting drive in the soil zone at the North Portal.<br />
South drive with pipe umbrella in opposite direction.<br />
Executed by <strong>Marti</strong> <strong>AG</strong>, Bauunternehmung, Zurich /<br />
<strong>Marti</strong> <strong>Tunnel</strong>bau <strong>AG</strong>, Berne<br />
1<br />
2<br />
3<br />
1. Cutterhead<br />
2. Installation of cable duct<br />
3. Breakthrough in the West tube on 21 April 2005
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