Requirements Management for Flow Production of Precast Concrete Modules

For efficient and sustainable use of precast concrete modules, all relevant information must be collected digitally and in real-time and made available in digital twins. Digitization should be carried out in such a way that continuous quality management is possible at all times. This also includes whether the produced concrete modules also meet all the requirements from the initial design. For example, the precast concrete parts must be able to absorb certain forces or have precise connections and joining options. The Requirements Interchange Format (ReqIF) can be used to describe requirements digitally and exchange them between different IT systems and stakeholders. The creation of automated quality control (QC) protocol for the flow production process can be implemented based on this already structured and formalized requirements format. In this paper, the Asset Administration Shell (AAS) from the context of Industry 4.0 is enhanced to enable the formal description and automated verification of requirements for precast concrete based on the ReqIF interchange format. For this purpose, a smart service integrates the ReqIF-compliant requirements into an AAS submodel. Via this smart service, a mapping assistance tool lets stakeholders assign measurable properties of the precast concrete modules to the requirements, thus enabling an automated quality check. The presented approach is validated based on a virtual precast concrete wall for which a chain of linked requirements is described and automatically checked within the scope of a case study.