Reasonable Foundations for Low-Rise Construction in the Republic of Belarus

Seskov V., Liakh V.

ABSTRACT

The article contains the results of the research of structural solutions for reasonable foundations for low-rise construction in the Republic of Belarus according to the soil conditions and actual vertical load on foundations (number of stories in a building).

Geotechnical conditions on the territory of the Republic of Belarus define to a significant extent the structural solutions for foundations of low-rise buildings. The conditions can be reduced to 5 basic types that differ according to the soils that make part of the their geologic structure: foundations with sandy deposits; foundations with clayey moraine deposits (sandy clay and clayey soil); foundations with clayey loess deposits (sandy clay and clayey soil); foundations with clayey glacial silts (clayey soil and argil); foundations with biogenic deposits (lacustrine, swamped, alluvial lacustrine and swamped, loamy and cretaceous).

The whole of loads can be divided into three groups (for buildings from 1 to 5 stories ): group 1 – from 30 to 470 kN (brick, large panel and monolithic construction); group 2 – from 80 to 700 kN (prefabricated building); group 3 – from 330 to 1980 kN (frame construction).

The brief assortment of reasonable foundations in the conditions of low-rise construction in Belarus includes the following foundations:

– strip (solid-cast and prefabricated) with laying depth no less than 0,4 m (4 variants), pile-supported (rammed in and bored of light-gauge, crewed) with length up to 4,0 m (3 variants), with solid foundation slab (3 variants) – for sand bases (deposits);

– strip (solid-cast and prefabricated) with laying depth no less than 0,5 m (14 variants), pile-supported (in bored and bore-expanded wells, with stampedout basis,, rammed in and impressed in of light-gauge, crewed) with length up to 5,0 m (6 variants), with solid foundation slab including – on geotechnical bodies (9 variants) – for clayey moraine, loess and glacial silt foundations (deposits);

– strip and pier with removal of soft biogenic soil layer and its replacement with compacted filling sand layer (4 variants), solid foundation slabs (3 variants), combined piled-raft foundation (3 variants) – for biogenic and loamy and cretaceous foundations (deposits).

According to the research results Recommendations on design and arrangement of reasonable foundations have been elaborated. The Recommendations include the Album of reasonable foundations for low-rise construction in the conditions of Belarus which presents the complete assortment, consisting of 88 variants of reasonable foundations.

Keywords: low-rise construction, reasonable foundations, structural solutions, soil conditions, assortment

For citation: Seskov V., Liakh V. Reasonable Foundations for Low-Rise Construction in the Republic of Belarus. Contemporary Issues of Concrete and Reinforced Concrete: Collected Research Papers. Minsk. Institute BelNIIS. Vol. 7. 2015. pp. 152-177.

Full text in Russian:



References:

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