Modular construction is a special discipline of precast concrete construction. In the design process, load-bearing structures are segmented into individual components, dimensioned, and optimized regarding constructability. In contrast to classic precast concrete construction, the components, in this case modules, should be the same or similar in order to enable robot-supported, serial-like production [1]. The production is thus automated in the protected environment of a production hall and subjected to integrated quality control. To facilitate this type of serial production, the modules must be limited in size or weight (max. approx. 1 t). This technology does therefore not aim at so-called off-site constructions, i.e. prefabricated substructures with already integrated technical installations, such as room modules. Work on the construction site is restricted to the quick assembly of the modules to the structural frame. Dry joints or classic screw connections, i.e. generally detachable connections, are suitable for this purpose. Considering the requirements of rapid construction, tolerance-compensating grouting joints are unsuitable in this case [2].
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Dr.-Ing. Patrick Forman, Institute for Concrete Structures, Ruhr-University Bochum, Germany Prof. Dr.-Ing. habil Peter Mark, Institute for Concrete Structures, Ruhr-University Bochum, Germany