Alternative performance-based seismic design for tunnels in soft soils

16 August 2017

For the Mexico City New International Airport, six tunnels structures are being designed for utilities, public road and ground service equipment. The design of these tunnels has been challenging given the very soft soil conditions, heavy airplane and seismic loads. By A.J.T. Luttikholt/C. Sigarán-Loría.

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Innovative BIM uses to design the new Airport of Mexico City

17 December 2015

The design process for the new Airport of Mexico City is challenging due to the extreme soil subsidence, considerable earthquake risks and large unknowns in the hydrological conditions of the site. Several steps were taken to ensure these challenges can be met while adhering to project planning and budget. A major step in overcoming these challenges is the use of Building Information Management (BIM).

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Best practice: Immersed tunnels

5 November 2015

Hans de Wit, MSc, managing director of Tunnel Engineering Consultants (TEC) answers WT's questions about the immersed-tunnels market. In World Tunnelling November 2015

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Dutch leading role in Chinese mega tunnel

19 October 2015

Mid thirties the Maas Tunnel was the first immersed tunnel in Europe. Almost eighty years later, the 'Dutch tunnel' is still an important export product. In Zhuhai (South China) Dutch engineers contribute to the realization of a megaproject. In Het Financieele Dagblad (article in Dutch)

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Immersed Tunnel: A Viable Option for The Orlovsky Crossing

15 June 2015

The Orlovsky crossing in St. Petersburg has been a hot topic over the past years. St. Petersburg faces a constant balancing act between river navigation and road traffic. In the ice-free period, the bridges over the Neva river open nightly for an extended period of time to allow ships to pass, stopping road traffic for several hours... By J. Bergsma/A. Doorduyn

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Marine Works Operations and Environmental considerations when building the Fehmarnbelt tunnel

1 June 2012

The Fehmarnbelt Fixed Link will connect Scandinavia and continental Europe with a combined rail and road connection between Denmark and Germany. It is planned to cross the Fehmarnbelt between Rødbyhavn, located some 140 km south of Copenhagen on the island of Lolland in Denmark, and Puttgarden, located on the island of Fehmarn on the north coast of Germany. In Terra et Aqua.

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Technical challenges in immersed tunnelling in the North/South Metroline in Amsterdam

18 May 2012

The new North/South Metro line in Amsterdam is currently under construction. The 9km line runs from the northern ring road to the southern ring road and passes the historic and very vulnerable city centre. For the part in the city centre special tunnel techniques are applied to limit the impact on both the historic buildings and the disruption on the city life. One special technique that is applied is the immersed tunnel technique. By ir. J.C.W.M. de Wit

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HZMB Stretching the limits of Immersed Tunnelling

18 May 2012

The construction of the HZMB Immersed Tunnel is scheduled to commence early 2011 as part of more than 50 km Link between Hong Kong, Macao and the Mainland China. It will carry a threelane dual carriageway with a design speed of 100 km/h and is designed for a 120 year design life. With a length of approximately 6 km the immersed tunnel will become the worlds’ longest. By ir. J.C.W.M. de Wit

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Immersed Tunnels: Competitive tunnel technique for long (sea) crossings

12 April 2012

Traditionally immersed tunnels are applied for river crossings and often in delta areas and in soft soil conditions. In countries like the US, Japan and the Netherlands the immersed tunnel technique is quite mature and common practice. However, over the past years there is also a growing interest for this technique in other countries. Recent tunnel projects have shown that immersed tunnels are feasible and competitive under more challenging circumstances. By J.C.W.M. de Wit and E. van Putten

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The Fehmarnbelt Fixed Link – Innovation and Research for Tunneling

1 May 2011

On 3 September 2008 the Danish and German Ministers of Transport signed a treaty to establish a link across the Fehmarnbelt between Lolland (DK) and Fehmarn (D). The same treaty was subsequently approved by the Danish Parliament and the German Bundestag. The Fehmarnbelt Fixed Link will be the third major crossing in Denmark after the realization of the Great Belt (1998) and the Øresund (2000) links. By ir W.P.S. Janssen

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