The procedure of anchorages with pretensioned tie bars creates the possibility of solving some foundation problems that in other solutions would be extremely expensive or impracticable from practical point of view. Anchorages are used at a series of foundation works in the domain of civil, industrial and agricultural constructions (anchoraging some cantilever constructions and some special roof types) and as much for the hydrotechnical constructions. Considering the great number of pretensioned anchorages achieved up to now for a great number of foundations and embankments works, the knowledge about their behaviour is still incomplete. These happen not because there are missing some measurements at natural scale, but because of relatively reduced possibilities of understanding the earth behaviour by its properties in the process of tensioning tie bars, in execution phase, but mainly during their operation in time. Conception and comprising of different types of anchorages or tie bars are not based on calculus, but more on intuition and palpable experiments on site, after that the improving of site technologies is done in general, by the practitioners.

anchorages; pretensioned tie bars; foundation soil; foundations and embankment works

Presentation: oral