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Track Design for Line Speed Improvement - Essay Example

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Track Design for Line Speed Improvement

In the US, many cities are investing in light rail to ease congestion, address climate change, and improve transportation efficiencies. In Europe, the same scenario is starting to unfold with a focus on light and heavy rail driven by the need for efficient transport links says Martin Baggot.
The renaissance in rail is a part of a wider strategy by the governments around the globe to develop sustainable transport solutions that will reduce our reliance on fossil fuels, the decrease of the impact of freight on roads and transform local communities into globally connected hubs, Martin Baggot adds.
A study had been done to improve the line speed of a section in a railroad track which has a length of 50 kilometres. The route is a twin railroad track that is joined track with a traffic that is a mixture of a conventional passenger traffic that is running at 150 kilometres per hour and a freight that runs at 100 kilometres per hour. The design would have to consider several sections of horizontal curves with sharp radii and steep vertical curves or gradients. It will also cover several stations and tunnels, including a number of bridges that are present. The line has power supply for traction through an overhead line electrification system. The new traffic flow will require traffic with a heavier axle weight to run (increasing from 20 to 25 tonnes). The design proposes a non stop tilting trains to run as well as the passenger stopping train.
The study is very important because there is a current number of permanent speed restrictions that are imposed due to the poor condition of the track components and formation/drainage problems. The necessity to redesign a transition curve between a curve and a straight railway is to facilitate the construction of a single turnout on a straight section. This is to be installed to allow access for the freight traffic into the new intermodal freight depot. An access off the main lines will be required at a very minimal speed of 50 kilometres per hour and an additional of 50 trains are expected to use the track.
Route Surveying on Condition
There are different description of the different types of surveys used to provide condition data to assist in the prioritizing of the resurfacing and reconstruction schemes are the following. Deflectograph is used to measure the deflection of the road surface under standard load. The deflection that is measured is used for the assessment of the strength of the construction of the road. The sideway force coefficient routine investigation machine is used for the measurement of the wet skid resistance of the surface of the road. The course visual inspection survey is a coarse driven visual inspection of the condition of the road or footway surface. The detailed visual inspection survey is a detailed, walked visual inspection of the condition of the road or footway surface. The scanner is the surface condition assessment of the national network of roads. The scanner automatic machine survey measures the condition of the surface of the road under normal traffic condition or speed. The term route surveying is a composition of all the survey operations that are needed to be used in the design and construction of any engineering work such as buildings, highways and railroads. Route surveying is an associated system with the design of a highway and construction for that matter. The system contains a four inter ...Show more

Summary

The economic growth, urbanisation and the increased mobility are boosting demand worldwide for the efficient transportation of people and goods. In order to meet these demands, transport links are experiencing resurgence. This is particularly true with the rail infrastructure for passenger and freight applications…
Author : ruby63
Track Design for Line Speed Improvement essay example
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