FIELD: foundation building, particularly for all-purpose buildings and structures, electric power lines and outer service lines in continuous or discontinuous permafrost conditions on all types of thawed ground except water-saturated grounds, seasonally thawing and freezing ground with 3 - 9 m depth located above permafrost or rock underplaying ground.
SUBSTANCE: method involves ramming foundation pit in seasonally thawing and freezing ground layer with forming compacted area around foundation pit and under it; building foundation unit in foundation pit. Foundation pit ramming is performed in thawed ground before freezing thereof. Compacted area is formed as solidified ground column supported by permafrost or rock grounds. Foundation pit is rammed up to bulging ground out of pit in upward direction, which indicates that solidified ground column rests upon permafrost or rock ground. After that thawed ground ramming is stopped and foundation unit is built in foundation pit so that foundation unit is supported by solidified ground column.
EFFECT: increased reliability of foundation base, reduced power and labor inputs, improved load-bearing capacity of thawed ground, prevention of foundation settlement during ground thawing and heaving thereof during foundation base freezing.
10 cl, 6 dwg
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