TRUSS BEAMS FOR BAUDER

REQUIREMENT

Truss girders for sophisticated hybrid construction

Bauder planned the construction of a new production site comprising nine buildings with a total floor area of around 47,000 m². To accommodate the large roof spans and high roof loads resulting from photovoltaic systems, green roofs and suspended technical systems, a structural solution was required that went beyond conventional solid-web girders.

The buildings were to be constructed as a hybrid structure comprising concrete columns and a steel framework. In doing so, the varying manufacturing tolerances of the precast concrete elements had to be taken into account at the design stage to ensure the precise assembly of the truss girders on site. At the same time, stringent requirements regarding fire safety, scheduling and coordination amongst all project stakeholders had to be met.

RESULT

Structural solution for the heaviest loads and large spans

Astron has constructed the steel structures for all nine buildings and used truss girders with clear spans of up to 45 metres. This structural solution enables large roof spans and supports heavy loads from photovoltaic systems, green roofs and suspended technical installations.

For the interfaces between the concrete columns and the steel structure, Astron has developed a special assembly system that reliably compensates for construction tolerances in the precast concrete elements. Fixing rails, slotted holes, and adjustment and clamping bolts enable precise positioning of the trusses and reduce the need for time-consuming rework during assembly.

Fire safety requirements have also been taken into account in the design. The trusses rest on a specially developed wedge system that safely transfers horizontal loads whilst simultaneously meeting the required load-bearing performance in the event of a fire. Close coordination between engineering, manufacturing, logistics and assembly ensures a precise, efficient and on-schedule construction process.