The paper presents a new point-supported slab building system concept developed at the Cluster of Excellence on Integrative Computational Design and Construction for Architecture (IntCDC) at the University of Stuttgart. The system uses a hollow-core system with two thin CLT plates acting as flanges and a set of distributed shear web elements in-between. The introduction of point supports induces large shear forces concentrated in the narrow region surrounding the column. This area is reinforced by an LVL core placed in-between CLT flanges, at the column-head position, with discrete web elements connected laterally to introduce the shear forces. Two alternative solutions for this connection are presented, differing mainly in the chosen strategy to bond both components: side bonding of web beams into the LVL core, or only gluing the frontal sloped face of the web beams. An experimental campaign was set, where a total of three specimens of each alternative where manufactured and tested. The results showed a clear superiority of the side-bonded web beams, reaching capacities between four to five times larger than the alternative without side bonding. The paper discusses the relationship of the system with robotic manufacturing processes and presents experimental and corresponding finite element results.
