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Applied Adhesion Science

, 3:16

3rd International Conference on Structural Adhesive Bonding


To a certain extent, adhesive bonding of measurement equipment is very common in science and technology, e.g. adhesive bonding of small-scale strain gauges. Adhesive bonding of the entire equipment for a fully autonomous pile driving monitoring of an impact-driven large-scale foundation structure for an offshore wind farm is a completely new application method. Several offshore wind farms are currently under construction in the North and Baltic Seas. Impact pile driving of the large-scale foundations usually causes much louder noise than permitted by regulations, so methods for noise reduction are necessary. Geotechnical engineers of the TU Braunschweig are investigating combined methods for reducing that noise, and in 2014 they had the opportunity to install measurement equipment for the investigation of dynamic pile deflections during pile driving into three of in total eighty monopiles length: 60 m, diameter: 6 m of an offshore wind farm in the German North Sea. Due to certification issues conventional methods of fastening such as screwing or welding were not permitted. Instead, adhesive bonding of all parts sensors, cables, shielding, recorder-computer was successfully applied and withstood impact driving with several thousand blows of up to 1200 g earth gravity. The authors would like to present the concept and preceding tests of the adhesive bonding applied within the research project ‘triad’.

KeywordsImpact-driven pile Pile driving monitoring PDM Dynamic pile test DPT Noise emission Adhesive bonding Elastic bonding Sensor application Thick film adhesive PUR Boosted PUR Primer Impact test Repetitive impact testing  Download fulltext PDF

Autor: Gregor Wisner - Elisabeth Stammen - Klaus Dilger - Hauke Sychla - Philipp Stein - Christian Kornemann - Jörg Gattermann


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