The Köhlbrand Bridge is the most important transport link in the Port of Hamburg and one of the landmarks of the Hanseatic city. Its economic and technical lifespan is predicted up until 2030. The enormous importance of the Köhlbrand Bridge for the Port of Hamburg means that a new crossing must be completed before the existing bridge can be dismantled. A technical feasibility study examined crossing variants that included a bridge or a tunnel.
In the subsequent planning phase, Schüssler-Plan as part of an engineering consortium was commissioned with the general design of the overall route as a bore tunnel variant with connecting structures and forming the node to the downstream network. Design work is supported in all service phases by the BIM methodology. The focus is on as-built modelling and derivation of the issues involved as well as cost, schedule and logistics planning.
In addition to defining the route, the task of the preliminary design is also to determine the depth and track widths. In addition, the construction phases and the overall construction process must be planned and a risk and assessment matrix prepared. The advantages of the BIM method lie in the early conformity check of the technical models and in the early examination of possible scheduling and geometric collisions by applying model-based cost, schedule and logistics planning.