Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New bridge built in two weeks

04.06.2008
With new bridge-building materials, industrial production methods, and an efficient construction process, it will be possible to start using a bridge only two weeks after construction starts on the site. This is shown in a new dissertation from Chalmers University of Technology.

A pilot study of the new bridge concept, the i-bridge, is included in Peter Harryson’s doctoral dissertation in concrete construction at Chalmers. The bridge consists of extremely light sections that are assembled on site.

The load-bearing parts consist of v-shaped fiberglass beams that are reinforced with carbon fibers on the underside. The beams interact with a thin bridge deck that is prefabricated out of steel-fiber-reinforced cement with extremely high strength. Since these materials are very durable, they are advantageous in a life-cycle perspective, and they are highly suitable for industrial construction.

However, these materials are not in use in the new construction of bridges today.

“The new bridge type is a construction that projects several years into the future, but the study shows that it would be technologically possible to build this bridge today if the concept is further elaborated,” says Peter Harryson. “However, at present the economic conditions are constrained by the major investments that would be needed to start production, and by the high prices for fiber-composite materials.”

Today the new type of bridge is estimated to cost more than twice as much as a conventional bridge. But the economic potential of the bridge concept can be enhanced considerably if the economic calculations are done in another way. Besides the shorter construction time, there are several advantages both from a life-cycle perspective and in terms of the working environment that could be valued higher.

The project has been part of (the Swedish Governmental Agency for Innovation Systems) Vinnova’s research program “Road, Bridge, Tunnel.” Peter Harryson has been an industrial doctoral candidate with the Swedish Road Administration, which has provided funding.

The dissertation, titled Industrial Bridge Engineering – Structural developments for more efficient bridge construction, was publicly defended on May 29.

Sofie Hebrand | alfa
Further information:
http://publications.lib.chalmers.se/cpl/record/index.xsql?pubid=70808

More articles from Architecture and Construction:

nachricht Flexible protection for "smart" building and façade components
30.11.2016 | Fraunhofer-Institut für Silicatforschung ISC

nachricht Healthy living without damp and mold
16.11.2016 | Fraunhofer-Gesellschaft

All articles from Architecture and Construction >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

Im Focus: Fraunhofer ISE Develops Highly Compact, High Frequency DC/DC Converter for Aviation

The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

UTSA study describes new minimally invasive device to treat cancer and other illnesses

02.12.2016 | Medical Engineering

Plasma-zapping process could yield trans fat-free soybean oil product

02.12.2016 | Agricultural and Forestry Science

What do Netflix, Google and planetary systems have in common?

02.12.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>