Inshore Mooring – Blankenburgverbinding

TWD supported BAAK in optimizing the installation sequence for the second tunnel element of the Blankenburgverbinding, a project complicated by the element’s large size and the strong currents in the waterway.

To address these challenges, TWD engineers improved the immersion method by reconsidering the hard stop at each immersion step. This adjustment significantly reduced the time required for the process.

TWD’s expertise encompassed a broad range of services to ensure project success, including marine and stability analysis, ballasting plan design, third-party independent checks, and method statement development. Furthermore, we provided guidance on selecting optimal methodologies and ensuring structural integrity during transport and installation.

Through efficient communication between our dynamics and structural teams, we maintained seamless alignment and clarity on key design drivers.

Project highlights

• The tunnel element is discretized into layers to model depth-dependent current velocity profile
• A depth-dependent drag coefficient accounts for salinity-driven water density changes