A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pylons made of high-strength spun concrete and prestressed with carbon fibre reinforced plastic for high power transmission lines
The aim of the project presented is the production of a 27 m high carbon fibre reinforced plastic (CFRP) prestressed spun concrete pylon as a support for an electric power line. This pylon will be used as a support mast in a section of the 110 kV line of the Nord-ostschweizerische Kraftwerke. The envisaged pylon weight of about 6 t means a 40 % weight saving compared to the traditional steel reinforced spun concrete pylon. The expected life without maintenance is 50 years. The obtained test results allow the conclusion that the developed CFRP prestressed HSC elements are durable with respect to the freeze thaw heat loads at middle-european latitudes. The production of slender, light and durable CFRP prestressed high-strength spun concrete pole sections has been proved feasible. The sections show sufficient shear and bending rotational capacity to make up for the lack of plasticity of the brittle reinforcing material. Analytical modelling describes the section's short term bending and torsional behaviour, such as the long term bending and compression behaviour, quite accurately. Creep testing under high loads in bending and axial compression shows relatively stable deformations. Thermal compatibility of the CFRP rods with the concrete matrix is a problem that has to be considered in the design of the proposed durable poles.
Pylons made of high-strength spun concrete and prestressed with carbon fibre reinforced plastic for high power transmission lines
The aim of the project presented is the production of a 27 m high carbon fibre reinforced plastic (CFRP) prestressed spun concrete pylon as a support for an electric power line. This pylon will be used as a support mast in a section of the 110 kV line of the Nord-ostschweizerische Kraftwerke. The envisaged pylon weight of about 6 t means a 40 % weight saving compared to the traditional steel reinforced spun concrete pylon. The expected life without maintenance is 50 years. The obtained test results allow the conclusion that the developed CFRP prestressed HSC elements are durable with respect to the freeze thaw heat loads at middle-european latitudes. The production of slender, light and durable CFRP prestressed high-strength spun concrete pole sections has been proved feasible. The sections show sufficient shear and bending rotational capacity to make up for the lack of plasticity of the brittle reinforcing material. Analytical modelling describes the section's short term bending and torsional behaviour, such as the long term bending and compression behaviour, quite accurately. Creep testing under high loads in bending and axial compression shows relatively stable deformations. Thermal compatibility of the CFRP rods with the concrete matrix is a problem that has to be considered in the design of the proposed durable poles.
Pylons made of high-strength spun concrete and prestressed with carbon fibre reinforced plastic for high power transmission lines
Leitungsmasten aus schleudergegossenem und mit carbonfaserverstärktem Kunststoff vorgespannten, hochfestem Beton für Hochspannungsleitungen
Terrasi, G.P. (author) / Bättig, G. (author) / Brönnimann, R. (author)
2002
14 Seiten, 10 Bilder, 8 Quellen
Article (Journal)
English
Hochspannungsmast , Spannbeton , Stahlbeton , carbonfaserverstärkter Kunststoff , hochfester Werkstoff , Prototyp , Herstellungsverfahren , Schleudergießverfahren , Gewichtseinsparung , Korrosionsbeständigkeit , Lebensdauer , Kältefestigkeit , mechanische Vorspannung , Profil (Bauelement) , Innovation , Leitungsmast
| British Library Conference Proceedings | 2001
| British Library Online Contents | 2002
| British Library Conference Proceedings | 2001
| British Library Online Contents | 2002
Spun concrete pylons prestressed with carbon-fibre reinforced plastic
| British Library Online Contents | 2001