Produce a report (min 500 words) on the construction methods applied for high sp

Question

       Produce a report (min 500 words) on the construction methods applied for high speed rail both in the UK and internationally). The report should include but not be limited to design for reliability and maintainability, including track access constraints.

What do we need to take into account when constructing a high speed rail link, for instance the components used, the track design and rolling stock?

What kind of constraints could affect the construction of High speed rail links in the UK and internationally, these could include land, difficult formation areas and restrictions on speed through certain terrain?

What would be the restraints on carrying out maintenance of these rail links, i.e track access and safety of workers?

Explanation / Answer

Solution:- (1)

a) The international definition of high-speed rail encompasses new lines with a top speed of at least 250 km/h (155 mph) and existing lines with a top speed of around 200 km/h (124 mph). As of 2011, there are four "classic" main railwaylines in Britain operating at up to 201 km/h (125 mph), plus 108 km (67 mi) of purpose-built high-speed line.

b)  The first purpose-built high-speed rail line in Britain was the Channel Tunnel Rail Link, the first section of which opened in 2003. The building of the line (re-branded "High Speed 1" in 2006) provoked discussion in the national media and specialist rail circles on the merits of constructing further high-speed lines.

c) A second purpose-built high-speed line is now planned by the government – High Speed 2 – which will connect London with Birmingham, and at a later phase cities in northern England (including Manchester, Sheffield and Leeds). Alongside this scheme, are plans by the Scottish Government to build a high-speed rail line between Edinburgh and Glasgow, to open by 2024.

(2)

At present, a mixture of 300 km/h (186 mph) Eurostar international services and 225 km/h (140 mph) Southeasterndomestic passenger services use High Speed 1. Attempts to increase speeds to 225 km/h (140 mph) on both the East Coast Main Line (ECML) and West Coast Main Line (WCML) have all failed, partly because trains that travel above 201 km/h (125 mph) are considered to require in-cab signalling for safety reasons. The term High Speed Train (or HST125) is currently also used as a brand name for the present British fleet of Class 43 201 km/h (125 mph) InterCitydiesel trains.

The following UK train operators operate high-speed rail services:-

a) Great Western Railway

b) Virgin Trains

c) CrossCountry

d) Virgin Trains East Coast

e) East Midlands Trains

f) Hull Trains

g) Grand Central

h) Southeastern

i)Eurostar

The actual number of useful combinations of squad and fire team combat formations within the platoon combat formations is numerous, creating a significant training requirement for the unit. Add to that the requirement to modify formations with movement techniques, immediate action drills, and other techniques, and it is readily apparent that what the platoon leader needs is a couple of simple, effective strategies. These strategies should be detailed in the unit’s SOPs.

(3) The restraints on carrying out maintenance of these rail links :-

a) GREX is there when tracks wash out, when ties begin to break down, and when ballast needs to be replaced. We collaborate with customers to develop innovative solutions that solve their toughest rail maintenance challenges.

b) Together, we’ll find track flaws before they shut you down, pinpoint where ballast is needed and automate its delivery, monitor your bridges remotely, and empower you to work more efficiently. At GREX, we’re all in, all the time to deliver Real Rail Solutions.

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