The Dieseko Group, renowned manufacturer of PVE and ICE brands, has made new advances in the driving of offshore mono pile and tripod foundations with patent pending 300M Upending Technology.
 
The 300MU was developed for Hochtief Solutions AG (https://www.hochtief-solutions.com/htsol_en/1.jhtml), the seventh-largest provider of construction-related services in the world and market leader in Germany, for the Global Tech 1 Wind Park project (https://www.globaltech1.org/) in the German North Sea.
 
This 400MW project consists of 80 turbines built on tripod foundations. In a tripod configuration three piles anchor a single wind turbine. Within a time frame of 1 year a total of 240 piles will be driven by the 300MU. The 300MU is based on deck of the Innovation Vessel (https://www.hochtief.com/hochtief_en/201.jhtml?pid=9184) and powered by the giant hydraulic power unit PVE 3200. This 3000HP power unit is equipped with 4 Volvo engines, and delivers 3200 l/min oil flow.


The advantages of vibro technology in driving large casings are well known: precision placement, short driving time and low environmental impact. The Upending technology adds additional cost and time savings to the concept: up-ending and lifting of the casings is carried out by the 300MU eliminating the need of lifting equipment and reducing the deck space requirements. On deck of the Innovation the 300MU Upending Vibro Hammer brings horizontally stored piles into vertical position, then lifts the piles into position and commences vibrating the piles to depth, all in one single procedure. For its design Hochtief chose foundation piles ranging from 48 to 70 meters in length with a diameter of 2,5m, and a total weight of up to 350 ton. A patent is pending on the 300MU-concept.


During engineering, production and testing, TüV Süd (https://www.tuv-sud.cn/) certified the 300MU’s building procedures and product quality. After a final extensive load test in summer 2012 the 300MU vibro hammer received TüV Süd’s approval including certification for upending and lifting.
 
ICE offers an extensive range of vibratory hammers, such as the 200M, 250NF and 500NF models) so that clients can chose the optimal configuration for their project, even offering the option of synchronizing two hammers into a tandem set-up to drive even bigger casings to greater depth.