Method for pre-stressing a steel structure, and steel structure pre-stressed using said method

摘要

The invention relates to a method in which at least one carbon fibre-reinforced polymer band is joined at the end regions thereof to the steel structure in a manner capable of transferring tractive force. Subsequently, in a region between said end anchorages (5), at least one lifting element (7) arranged between the carbon fibre-reinforced polymer band (4) and the steel girder (3) to be reinforced is extended substantially perpendicular to the carbon fibre-reinforced polymer band (4). This produces a tractive force tension between the end regions of the carbon-fibre-reinforced band (4). A steel structure treated in such a manner then includes at least one carbon fibre-reinforced polymer band that is joined at each end region thereof to the steel structure (1) in a manner capable of transferring tractive force. In the region between said end regions, a lifting element (7) is arranged between the carbon fibre-reinforced polymer band (4) and the steel girder (3) to be reinforced, by means of which lifting element the carbon fibre-reinforced polymer band (4) can be subjected to tensile stress by being lifted away from the steel girder (3). The tractive force is introduced into the steel girder (3) via the anchoring elements (5).