Shape optimized, filigree rods out of UHPC and non-corrosive CFK-reinforcement for variable spatial frameworks

Except of columns, concrete load-bearing systems are up to now usually characterized by transferring loads as surface elements or massive beams with comparatively unbalanced material utilization. Besides weight reduction and resource efficiency, the transparency can also be increased significantly by resolving these systems and designing filigree rod-like structures that are following the flux of forces. By using innovative materials (e.g. UHPC) and manufacturing processes combined with skill ful designing - on system level (arrangement of nodes and rods) and component level (shape optimized rods and nodes in concern of material consumption) - it is possible for concrete structures to advance into fields of application that have so far almost exclusively been reserved for steel constructions. In addition, the use of reinforcement elements made of fiber-reinforced polymers and high-performance concrete involving a high density results in almost non-corrosive structural elements linked with low maintenance effort and a high durability. The main objective of this research project is to develop genera(engineering models and design principles based on theoretica(and experimental investigations for future applications of filigree variable spatial frameworks out of concrete. For that purpose first of all a modular concept is studied theoretically, with laboratory tests problems that are not yet sufficiently solved, will be ensured scientifically and finally the mechanica(models will be validated through tests of the structural components.