Transition Pieces

The transition piece is a critical structural component that connects the wind turbine foundation (monopile/jacket) to the turbine tower. As a precision-matched load-bearing element, it primarily compensates for foundation construction deviations, transfers loads from the upper structure, and ensures accurate tower installation as well as overall structural verticality and stability.

Application scenarios

Universally compatible with all single-pile and jacket-type offshore wind turbine foundations; designed for precise alignment and installation of offshore wind turbine towers, correcting vertical and horizontal deviations caused by pile driving; suitable for nearshore and deep-sea wind projects under all operating conditions, serving as an essential core component for connecting turbine foundations to tower structures.

Main Structure  

The overall structure consists of a large-diameter steel cylindrical body with a high-precision tower connection flange at the top and a base designed to interface with foundation piles. Internal stiffening ribs and load-bearing partitions are installed within the cylinder to enhance structural rigidity. The design includes reserved grouting holes, venting holes, maintenance access points, as well as anti-corrosion and lifting auxiliary components, all requiring extremely high standards for dimensional accuracy, flatness, and verticality.

Corresponding product standards  

- DNV-OS-C103 "Design Principles for Offshore Steel Structures"  

- GB/T 36572 "Technical Specification for Offshore Wind Transition Pieces"  

- ISO 19904 "Accuracy Control Standard for Floating and Fixed Offshore Structures"  

- AWS D1.1 "Structural Welding Code for Steel"  

- EN 1090 "Execution Standard for Steel Structures"