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A platform for research: civil engineering, architecture and urbanism
A bridge in two weeks. Fibre reinforced composite and concrete crossing capable of rapid construction
Short notice given only substantially as follows: 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, according to a pilot study of a new bridge concept - the i-bridge - carried out by Peter Harryson for his doctoral dissertation at Chalmers University of Technology, Sweden. The i-bridge concept comprises extremely light sections that are assembled on site. The load-bearing parts consist of v-shaped composite beams reinforced with carbon fibres on the underside. The beams interact with a thin bridge deck that is prefabricated out of steel-fibre-reinforced cement with extremely high strength. Since these materials are very durable, they have advantages in terms of life-cycle, and they are highly suitable for industrial construction. The new bridge type is a construction that projects several years into nthe future, but the study shows that it would be technologically possible to build this bridge today if the concept is further elaborated. 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 fibre-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 a Vinnova research program.
A bridge in two weeks. Fibre reinforced composite and concrete crossing capable of rapid construction
Short notice given only substantially as follows: 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, according to a pilot study of a new bridge concept - the i-bridge - carried out by Peter Harryson for his doctoral dissertation at Chalmers University of Technology, Sweden. The i-bridge concept comprises extremely light sections that are assembled on site. The load-bearing parts consist of v-shaped composite beams reinforced with carbon fibres on the underside. The beams interact with a thin bridge deck that is prefabricated out of steel-fibre-reinforced cement with extremely high strength. Since these materials are very durable, they have advantages in terms of life-cycle, and they are highly suitable for industrial construction. The new bridge type is a construction that projects several years into nthe future, but the study shows that it would be technologically possible to build this bridge today if the concept is further elaborated. 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 fibre-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 a Vinnova research program.
A bridge in two weeks. Fibre reinforced composite and concrete crossing capable of rapid construction
Future Materials - fm ; 22-23
2008
2 Seiten, 2 Bilder
Article (Journal)
English
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