Design, Engineering and Architecture
This theme covers the technical design, engineering and architecture for the HS2 Programme
Design, Engineering and Architecture Resources
Resources include papers, videos, research summaries and good practice documents produced by authors from across the HS2 Family to capture learning, good practice and innovation from the HS2 programme
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Chiltern Tunnel cross passage durability design – response to challenges
The High Speed Two (HS2) Chiltern Tunnel will contain 40 cross passages (CPs), 38 of which are mined tunnels based on sprayed concrete lining (SCL) design. The Chiltern Tunnel and its cross passages are required to have a design life of 120 years, befitting of a structure of national significance. The 38 SCL cross passages…
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HS2 track alignment change process through collaboration
In every high-speed railway project, the track alignment is one of the most, if not the most, critical element of design. The alignment is the basis that the rest of the civil works design is based on, with any change potentially having a significant knock-on impact. Hence the creation of a holistic contract-wide change control…
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Minimisation of spoil to landfill from a collaborative approach to re-use on site
The High Speed Two (HS2) affordability challenge launched in November 2018 was the springboard to new ideas to change the scheme in the West Ruislip area. The idea was named the NEMO concept (New Excavated Material Opportunities). NEMO achieves a 3% carbon reduction, avoids 400k m3 of excavated material and removes 1.35M m3 of off-site…
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Innovative passive smoke control in Copthall Tunnel
This paper describes a ventilation concept for Copthall tunnel which allows this 600m long tunnel to be naturally ventilated to control pressures, temperatures and control smoke in the event of a fire. A significant benefit of the tunnel solution for Copthall (when compared with the cutting previously planned at the hybrid Bill stage) is that…
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An automated digital method for the assessment of crosswind safety for the HS2 route
Strong crosswinds have been known to overturn trains. High-speed trains can be especially at risk because the higher the train speed, the lower the critical wind speed at which overturning occurs. The risk of overturning varies at different points along a given route and is influenced by the exposure of the track (for example, on…
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