Abstract
Pile technologies in modern foundation engineering are the leading direction for improving their constructive and technological solutions. The bearing capacity of pile foundations largely depends on the formation of the frictional force of the soil along the lateral surface of the piles. The authors considered technologies for the construction of transformable piles using non-explosive destructive substances, modular piles with a developed lateral surface and an optimal cross-section, piles using geopolymer technology and piles that allow changing the granulometric composition of the adjacent soil. The results of laboratory studies of the models of these piles are given, the effectiveness of their application is established and methods for calculating their bearing capacity are proposed, the directions of research activities are indicated. The studies carried out allow us to conclude that the comparison of the specific bearing capacity of driven piles of different cross-sections showed that the most rational section is tavrovoe. The developed, approved and registered "Technical conditions for modular driven T-shaped piles" make it possible to manufacture, transport, and drive this type of piles for industrial and civil construction. Options for the layout of foundation systems based on modular T-section piles are proposed, depending on the nature of the load acting on them.
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