(57) Abstract:The invention relates to the construction and can be used as foundations of buildings and structures built on permafrost. Pile includes placed in the well, filled with freezing liquid composition, the barrel and anchor elements. The anchoring elements are connected by flexible connections with each other and with the ends of the piles. Flexible connection can be made in the form of a cylindrical shell. The barrel may be made in the shape of a tube with a bottom elevated above the surface of the soil and filled with coolant. 2 C.p. f-crystals, 2 Il. The invention relates to the field of construction and can be used in the foundations of buildings and structures built on permafrost.Known pile, including the barrel and attached to the anchoring elements in the form of rings . The disadvantage of this pile is the relative complexity of manufacturing, warehousing, transportation.Known pile for buildings, structures built on permafrost, including placed in the well, filled with freezing liquid composition, the barrel and anchor elements. This pile closest to the invention and adopted in kachestvennyyy production piles, and a relatively low increase of the resistance of the normal pressure and the forces of frost heave, directed upwards. This increase is limited by the size of the through holes on the pile. In addition, the known pile spent a lot of metal and concrete.The disadvantage piles can be attributed to the inefficient use of saline frozen soils, which have a wide distribution in the Northern regions of Russia. Salt is diffused into a liquid filler, reducing the strength of his freezing with the barrel. The disadvantage is the slow freezing of liquid filler hole.In the present invention resolves these shortcomings. This is achieved by the fact that in the pile for buildings, structures built on permafrost, including placed in the well, filled with freezing liquid composition, the barrel and anchor elements, the last vertical flexible links connected to each other and with the ends of the piles.Flexible connection can be made also in the form of cylindrical shells.In addition, the barrel may be made in the shape of a tube with a bottom elevated above the surface of the soil and filled with coolant.In Fig. the Fig. 2 - the same, when performing the anchoring elements in the form of separate elements.The pile includes a barrel 1 (for example, in the form of a metal pipe with a bottom), the anchor pad 2 or the individual elements 3, connected to each other by flexible connections 4 (ropes or flexible cylindrical shell, for example, from a canvas). Anchor site 2 represents the frame or ring that surrounds the barrel, made of a material whose density is less than the density of the liquid filler hole. Separate anchoring elements 3 represent different geometric shapes with a developed cross-sectional area (spherical, polygonal, and so on). The lower anchor is made in the form of a continuous concave areas-tip 5. Upper Playground is equipped with vertical pins 6. Within seasonal activeuser layer and above is a concrete part 7 piles.Piles are installed in the cold period of the year in the following manner. Drill hole. Pour it freezing liquid composition is water, weak cement or clay solution in a quantity sufficient to fill the well by lowering its trunk and anchor sites. The anchoring device is made of a pop-up in liquid filler squatarola set above the well, in his tip 5. Barrel, plunging into the borehole (liquid filler), pulls the anchors 2 or 3. The liquid level rises to full fill the well. Arhimedova force and a flexible connection 4 provide the specified anchor location of sites along the length of the barrel 1. While not related to each other in a horizontal plane anchors 3 pop up along the trunk easier than encircling the stem of the anchor pad 2, as this prevents friction. At the same time the total area of the bearing, the latter is always more. Therefore, the choice of anchors 2 or 3 depends on which one is easier (cheaper) to make (buy) in these conditions.Under the influence of low temperatures of the surrounding frozen soil liquid filling freezes well, but not quickly enough. To accelerate the solidification of the liquid solution in the stem using a tube with a bottom, a length greater than the depth of the well, filled, for example, kerosene. Due to the fact that winter in the aerial parts of the pipe kerosene always colder, and its density is higher than in the feed, in the pipe occurs convective circulation of kerosene, in which additional cooling liquid filler SLE is t the casing and fill it with concrete mortar. Hardening last locked in this part of the pile reinforcing rods 6 and the ends of the flexible links 4, pre-extruded from a liquid filler prior to its freezing point. Thus, the anchor system is associated with the pile shaft at both ends.Due to the flexible fastening ties with the upper end of the pile increases the resistance of piles vertical load directed from the bottom up, each year occur during freezing seasonal activeuser layer (the so-called forces of frost heave).In saline soils, salt will penetrate into the filling well water and to prevent complete freezing. This will lead to a decrease in carrying capacity of the system trunk-ice-anchor pad. To eliminate this danger flexible connection is performed in the form of a continuous flexible membrane, for example, of canvas, attached to the ends of the anchor pads 2. This membrane prevents the penetration of salt in frozen solution.The advantage of the proposed device is the ease of manufacture, reduction of the consumption of piles (bottom), providing resistance as normal pressure, and the forces of frost heave, predohranenie> 1. The pile of buildings, structures built on permafrost, including placed in the well, filled with freezing liquid composition, the barrel and anchor elements, characterized in that the anchoring elements connected by flexible connections with each other and with the ends of the piles.2. Pile on p. 1, characterized in that the flexible connection is made in the form of a cylindrical shell.3. Pile on p. 1, characterized in that the barrel is made in the shape of a tube with a bottom elevated above the surface of the soil and filled with coolant.
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