Spannbetonträgern

Spannbetonträgern are structural elements used in construction that have been prestressed. This prestressing is achieved by applying tension to reinforcing steel or other materials within the concrete before or during the curing process. This tension creates internal compressive forces in the concrete, which counteract the tensile forces that will occur when the beam is subjected to external loads. This pre-compression significantly increases the load-bearing capacity and stiffness of the beam compared to a non-prestressed concrete beam. Spannbetonträgern can be fabricated off-site and then transported to the construction location, or they can be prestressed in situ. The methods of prestressing include pre-tensioning, where the tendons are tensioned before the concrete is poured, and post-tensioning, where the tendons are tensioned after the concrete has hardened. These beams are commonly used in bridges, parking garages, and buildings where long spans or heavy loads are anticipated. The use of Spannbetonträgern allows for more slender and efficient structural designs, reducing material usage and enabling larger open spaces.