Motivation and Objectives of Subproject 6
Based on engineering methods for calculations and present experiences with the design, testing and build-up of components in relevant constructions (in steel, glass, membrane and façade construction), the construction, and joining principles for thin-walled, profile sections which are subjected to bending stresses or stresses planarly arranged (and in this case predominantly tensile-stressed components of paper for assemblies in supporting structures), functionally integrated facades and interior designs of buildings are to be developed. In the foreground are the basic functionalities of the assemblies in buildings: sealing, carrying, sealing and insulation. In a further step the constructional integration of technical elements for the energy supply, energy generation, energetic activation and storage, ventilation and exposure shall be investigated. The necessary design principles and joining techniques are to be developed in this way from related and adaptable constructions, as well as, if necessary, new methods are to be supplemented. The solutions should then correspond to the safety level customary in construction and required by the building authorities for stability and suitability for use.
Atlas of design principles and development of assemblies
Against the background of the material properties, a constructive use of paper is essentially useful in the area of thin-walled profiles (e.g. with already commercially available pipe profiles) and flat, predominantly tensile-stressed structural components, since efficient constructions can be realized with low material consumption. The components for the structure (skeleton construction with profiles, flat or integral components), casing construction (façade and roof) as well as interior components such as partition walls, as well as integral modules (sanitary units, kitchen units, house technology assembly units) are developed structurally and structurally. This is followed by the evaluation of the functionality and the system potential of the design principles as well as of the structural assemblies.
Evaluation of the functionality of the design principles and the constructive assemblies
The evaluation takes place against the background of the necessary basic functionalities of the delimitation, carrying, sealing and dams. The emphasis here is on securing the functionalities in the sense of the stability and suitability of the assemblies for the effects of weight, wind, snow and person-induced loads that are customary in construction. In a further step, the design principles and constructive assemblies are evaluated for multifunctionality with the goal of energy supply (media management), energy generation (solar thermal energy, photovoltaics), storage possibilities (thermal storage, electric storage, Ventilation (active, passive) and exposure through imprint, installation and responsive or performative constructions.
Evaluation of the system potential of the construction principles / constructive assemblies
In addition, the potentials and risks of systemic solutions are evaluated, in addition to the questions of a specific constructional technical implementation (component sizes, transport and logistics, assembly principles), in order to provide product design solutions for building products (eg façade system, interior extension system) and / or system constructions Element facades or sanitary units, etc.
Catalog of joining techniques
In order to support the development of subassemblies, it is necessary to document, evaluate and further develop possible joining techniques in detail, taking into account additional manufacturing methods. For this purpose, a catalog of possible joining techniques of paper with paper and other materials is developed and requirements and principles for new track solutions formulated.
Investigation of joining techniques with regard to the load bearing capacity of the joint
Selected joining techniques are investigated with regard to their load carrying capacity in experimental tests in laboratory series. These experimental works are necessary, since there are no adequate engineering methods for constructing dimensioned parts made of paper, either in construction or in neighbouring disciplines. Based on preliminary work it is assumed that there is great potential for the use in building construction, especially in the field of joining techniques bonding, form-fitting and hybrid connections.
Engineering methods for the local dimensioning of the joining point (joining techniques gluing and form closure)
For the proof of stability and suitability for use with the joining techniques bonding and form-fitting, paper-specific approaches for engineering methods for the dimensioning of the joining points are to be developed, which meet the safety level required by the building authorities in terms of stability and suitability for use.