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
New, forward-looking report outlines research path to sustainable cities
24.01.2018 | National Science Foundation
Magnetic liquids improve energy efficiency of buildings
16.01.2018 | Friedrich-Schiller-Universität Jena
Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...
On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...
The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...
At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.
When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...
At the ILA Berlin, hall 4, booth 202, Fraunhofer FHR will present two radar sensors for navigation support of drones. The sensors are valuable components in the implementation of autonomous flying drones: they function as obstacle detectors to prevent collisions. Radar sensors also operate reliably in restricted visibility, e.g. in foggy or dusty conditions. Due to their ability to measure distances with high precision, the radar sensors can also be used as altimeters when other sources of information such as barometers or GPS are not available or cannot operate optimally.
Drones play an increasingly important role in the area of logistics and services. Well-known logistic companies place great hope in these compact, aerial...
16.03.2018 | Event News
13.03.2018 | Event News
08.03.2018 | Event News
16.03.2018 | Earth Sciences
16.03.2018 | Physics and Astronomy
16.03.2018 | Life Sciences