How does the Zollinger Node really work?

In the current time, the consciousness grows to handle the planet environmentally friendly and deal with the resources sustainably. The only renewable and CO2-neutral building material that is used in a considerable amount is wood. From this perspective we need to use wooden constructions and additionally target to reduce the material consumption. The wooden shell structures consume considerably less wood compared to conventional constructions such as wooden bending structures.The shell structure designed by F. Zollinger enables a roof to span spaces without support. It consists of many similar planks that form together a network structure and build an arched roof. For the static proof of these constructions the execution of the nodal connection plays an important role. Because of the high number of node connections the static system of the construction is indetermined. This means that the stiffness of the node connections must be known in order to calculate the full structure.For this reason, experimental investigations were carried out on the Zollinger connection and a newly generated connection option. These have the aim to analyze and compare the load transfer- and the deformation behavior of these connections. The presented results shows a clear improvement in the behavior of the newly developed connection.

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