Research and Application of Digital Twinning for the Immersed Tunnel Prefabrication

In order to adapt to the production requirements of ultra-large immersed tunnel prefabrication in the new era, this paper integrates the theoretical research in the early stage of the subject, designs the framework of production management system according to 4 basic layers, and forms the digital twin technology of immersed tunnel prefabrication factory. It combines the construction information of each independent construction region successfully. The digital information window was used to carry out precision control of the whole process of steel shell-concrete tunnel prefabrication with the logic design of the blueprint and C++ program in Unreal Engine. It solves the problems in the traditional construction industry effectively, and realizes the construction objectives of traceable information management of mixing plant, cooperative scheduling of multiple equipment, intelligent concrete casting in concealed compartment, safe & long-distance transportation of tunnel section.