Featured Research

from universities, journals, and other organizations

Underground Power Lines That Bypass Monuments In Cities

Date:
November 12, 2009
Source:
FECYT - Spanish Foundation for Science and Technology
Summary:
Mathematicians have created a method to design underground lines whereby a city's historical buildings are unaffected.

This is an image of underground lines that bypass monuments.
Credit: Ortega et al. /UV

A team of mathematicians from the Engineering and Architecture Schools of the University of Seville has created a method to design underground lines whereby a city's historical buildings are unaffected. The results of the study, which has just been published in the Journal of the Operational Research Society, offer possible solutions for the future underground line 2 in Seville.

"The methodology applied seeks to minimise the length of underground lines -with the subsequent economic saving- and to maximise their distance from historic buildings to avoid their being damaged," Francisco A. Ortega, co-author of the study and professor at the Higher Technical School of Architecture of the University of Seville, said.

The study, published in the Journal of the Operational Research Society, uses "Voronoi diagrams," a mathematical tool that divides a plane into polygons created around points (72 historic buildings, in this case), in such a way that their perimeters are equidistant from neighbouring points. These geometric constructions are used, for example, to establish mobile telephone networks in an area.

The researchers have created an algorithm that finds the shortest routes between two nodes of the Voronoi diagram, ensuring a safe distance from monuments. Polygon edges are also rounded to make the route smoother.

The study specifically applies to the construction of line 2 of the Seville underground, which over the next few years will link the city's Palacio de Congresos (Conference Centre) with Santa Justa railway station, the historic centre and the district of Triana.

Ortega asserts that "There have been doubts as to the viability of this work regarding the safety of nearby buildings due to previous experiences, such as the fact that the construction of the first underground line in Seville in the seventies was suspended out of fear that the cathedral might be affected, or more recently in the district of Carmel, Barcelona, where the structure of certain buildings was damaged as a result of the works carried out to extend the underground".

The researcher explains that the new method provides "genuine, feasible and efficient solutions" for line 2, and leaves an average safety radius of 80 metres around the historic buildings. The work offers various non-disruptive alternatives for the construction of this underground line in Seville.

Ortega emphasises that the methodology follows "multi-criteria optimisation" in the design of underground networks, but does recognise that when it comes to the final decision-making process there will also be other factors to consider (the speed at which work is carried out, the order in which lines will open, integration with other transport systems, such as trams) and various agents (local governments, autonomous regions, transport operators etc.) will be involved.


Story Source:

The above story is based on materials provided by FECYT - Spanish Foundation for Science and Technology. Note: Materials may be edited for content and length.


Cite This Page:

FECYT - Spanish Foundation for Science and Technology. "Underground Power Lines That Bypass Monuments In Cities." ScienceDaily. ScienceDaily, 12 November 2009. <www.sciencedaily.com/releases/2009/11/091111101400.htm>.
FECYT - Spanish Foundation for Science and Technology. (2009, November 12). Underground Power Lines That Bypass Monuments In Cities. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2009/11/091111101400.htm
FECYT - Spanish Foundation for Science and Technology. "Underground Power Lines That Bypass Monuments In Cities." ScienceDaily. www.sciencedaily.com/releases/2009/11/091111101400.htm (accessed September 20, 2014).

Share This



More Matter & Energy News

Saturday, September 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

What This MIT Sensor Could Mean For The Future Of Robotics

What This MIT Sensor Could Mean For The Future Of Robotics

Newsy (Sep. 20, 2014) MIT researchers developed a light-based sensor that gives robots 100 times the sensitivity of a human finger, allowing for "unprecedented dexterity." Video provided by Newsy
Powered by NewsLook.com
MIT BioSuit A New Take On Traditional Spacesuits

MIT BioSuit A New Take On Traditional Spacesuits

Newsy (Sep. 19, 2014) The MIT BioSuit could be an alternative to big, bulky traditional spacesuits, but the concept needs some work. Video provided by Newsy
Powered by NewsLook.com
New Music With Recycled Instruments at Colombia Fest

New Music With Recycled Instruments at Colombia Fest

AFP (Sep. 19, 2014) Jars, bottles, caps and even a pizza box, recovered from the trash, were the elements used by four musical groups at the "RSFEST2014 Sonorities Recycling Festival", in Colombian city of Cali. Duration: 00:49 Video provided by AFP
Powered by NewsLook.com
Virtual Reality Headsets Unveiled at Tokyo Game Show

Virtual Reality Headsets Unveiled at Tokyo Game Show

AFP (Sep. 18, 2014) Several companies unveiled virtual reality headsets at the Tokyo Game Show, Asia's largest digital entertainment exhibition. Duration: 00:48 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins