TCB assemblies are extensively used in modular tower designs and been utilized by the most prominent companies in the wind energy market including Siemens Gamesa & Lagerwey.
There are many challenges in the wind energy market that can be met head-on by specifying TCB assemblies; from new tower designs incorporating vertical blades to hybrid designs to ultra-high towers with climbing cranes, the TCB preloaded bolting system is the ideal choice for any preloaded connection.
Wind farms are often sited in remote areas. To transport towers requires specialist vehicles & logistics. The wind energy market has come up with a variety of solutions but all of these have cost implications. Often purpose built roads are constructed & buildings have been demolished to maneuver segments of tubular towers via road network; in other designs for ‘hybrid towers’ temporary concrete plants have to be built on site. To address these issues Tension Control Bolts Ltd worked with Siemens & Andresen Towers on a conceptually innovative ‘flat-pack’ design (often referred to as shell towers) where steel sections are bolted together thereby allowing a larger diameter tower. Cranage is significantly reduced, taller towers can be erected much faster & transport costs are drastically reduced. With over 230 towers built to this design, up to 142 meters high, this technology enables more efficient power production.
Reduced Maintenance Costs
The costs of maintaining towers is high. Research from DNV Oslo and the Fraunhofer Institute allied to the University of Rostock engineering faculty verified that Greenkote TCB assemblies from Tension Control Bolts Ltd do not lose pre-load after correct installation. In simple terms TCBs are maintenance free and will outlive the design life of the tower.