OPPORTUNITIES OPTIMIZATION OF CONSTRUCTIVE SOLUTIONS OF REINFORCED CONCRETE PILE FOUNDATIONS UNDER BUILDING WALLS.

Abstract

Under the walls of buildings, strip foundations of shallow laying are most often used, and in some cases, pile foundations are also used. A rather important and positive feature of pile-strip foundations is that they are reliable in transferring the vertical load from the walls to the base soil. The reliability of these foundations is due to their high bearing capacity, as well as small deformations, because they, as a rule, penetrate the lower ends of the piles into the dense soils of the base and transfer the majority of the load to them. However, the field of use of pile foundations in modern construction is limited by their rather high cost.

That is why an urgent issue when using strip pile foundations is to reduce their cost to the value of shallow foundations on a natural basis. In this case, the reliability of pile foundations combined with a low cost will make it possible to expand the scope of their application, and the consequence of this will be an increase in the industrialization of zero-cycle works, a reduction in the amount of manual labor, and the convenience of execution in adverse climatic conditions.

The main directions for achieving the specified tasks are a more complete use of the capabilities of the base soils to accept the load from strip pile foundations, as well as optimization of the design solutions of these foundations and their foundations. It should be noted that the load absorption from the foundations involves mainly the soils into which the lower ends of the piles enter, and the upper part of the soil stratum within the inter-pile space is almost not involved in this process. In order to use the upper part of the space between the piles to absorb the vertical load, it is proposed to use a low grid in the process of transferring pressure to these soils. In modern construction practice, the possibility of transferring part of the vertical load through the low grid of the strip pile foundation is not taken into account.