Scientific paper ID 1857 : 2019/3

Stoyna Kostova

The article discusses screw driving piles. They can bear tensions as well as stress pressures. Screw driving piles are short ring-shaped steel piles with protruding screws welded to the pipe. Due to the protruding screws, the tensile bearing capacity of these piles is considerable. Depending on the size of the tensile stresses to be bear, the piles have different diameters and lengths. These piles can be used to bear the tensile forces of photovoltaic power plants.

Screw driving piles are used to bearing tensile stresses in different structure. They are also called screw anchors. In our opinion, they are suitable for use in non-console photovoltaic power plants designs. Console bearing structures produce tensions in different directions from wind and from earthquake loads. In such situations it is necessary to use anchor piles united with a common plate called rostwerk. Which actually transfer construction in a usual pile foundation, and this does not lead to economical results. Screw driving piles can easily be combined with the top metal structure. For this purpose, different unifying links details between the piles and the top structure were created. The density of the anchors depends on the amount of effort transfered to the soil, and also the strength of the soil. Two types of bearing structure for the photovoltaic plants have been calculated.

винтови пилоти опънни фундаменти фотоволтаични системи.screw piles tensile foundation photovoltaic system.Stoyna Kostova


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