Piling Technologies in Ukraine: Some Recent Developments

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The first part of the paper sets the actual scientific task to develop the integrated piling process aimed at the automated construction of pile foundations and sheet pile walls for civil and industrial buildings/structures. The technology is based on the application of the Modular Aggregative Piling System (EC Transzvuk), intended for pressing into the ground precast pile elements by a flow-production method with the highest possible performance at the lowest cost of labor. High productivity of piling works is provided by non-stop operation of the equipment, due to the integrity of the basic non-interruptible automated process: pile installation – piling machine displacement. The second part of the paper considers some recent innovations of piling technologies developed to simplify tubular piles press-in installation by prevention of the soil plug formation. One of the proposed approaches uses separate (step-by-step) driving of pile tip (shoe) and pile shaft concentrating energy of pile driving machine on tip or on shaft. Another approach is based on alternate driving of tubular pile and internal core avoiding formation of soil plug at the pile tip.