(57) Abstract:The inventive driven pile the average size of the projection on the horizontal plane overlying the broadening exceeds not less than 1.2 times the area of the projection on the horizontal plane of the lower broadening and broadening located at the height of the trunk at an average distance from each other equal to (10 60), where in - flight overlying broadening, and the departure of the lower broadening does not exceed 1/2 of the diameter or the width of a face, on which there is a broadening, thus broadening can be performed in the lower parts of one or two lateral sides of the trunk, and the faces can be made oblique to the transverse axis of the pile. 3 C.p. f-crystals, 10 ill. The invention relates to the construction, namely, pile foundations and can be used in the construction of residential, public and industrial buildings and structures.Known for driven piles with the broadening at the lower end, the so-called clavate. Such a short length of 3-5 m) piles have a high load carrying capacity in flooded weak clay soils with the support of the lower end of the stem on a firmer base layers .However, the known piles have a number of asistenta low carrying capacity of the terms of admissible deformations of foundations and uneven settlement of foundations. And with increasing length clavate piles decreases its specific load-carrying capacity, since increasing the length of its trunk increases the area of the side surface. And clavate piles through the side face side of the broadening is not transferred to the load on the Foundation soil, as these facets are formed voids.Further cavities (sinuses) on the side of the barrel from the Bay filled with soil in the loosened condition. Thus, the adhesion between the soil and the lateral surface of the pile is virtually absent, resulting in reduced bearing capacity known piles.Because clavate piles have a developed area at the lower end, then the pile is advisable to lean the bottom end on a deeper durable layers of Foundation. In this case difficult is driving such piles, so as to increase the area of the pile in the lower end face dramatically increases the resistance of the trunk dive. This is because when driving the base weight of the soil displaced by the pile, is moved in a direction beyond the area of the polygon bounded by the lower end of the stem. Displacement of soil in the hand you want to attach to stoo ening, the intensity increases the resistance of the pile shaft immersion, which leads to excessive energy consumption for immersion piles.In addition, often there is destruction of the stem clavate piles under the influence of the force of the blow required to dive. This also leads to reduction of the bearing capacity is known for driven piles. To increase the strength of the trunk can spend a significant amount of high quality cement and steel.These drawbacks hinder the wide application of known piles.The closest technical solution to the invention to the technical essence and the achieved result is driven pile, including having the tip of the barrel with the broadening spaced tiers in height at a distance from each other .However, the known pile has some significant drawbacks. When immersed known piles along its trunk is formed leading well with the cross-sectional area equal to the square projection on the horizontal plane of the cross-section of the barrel in the zone of the lower broadening. With further immersion famous piles her trunk with the upper Bay is immersed in the resulting hole. In this case, the C of the bottom edge of the upper Bay and through the side surface of the barrel between the broadening of the load from the pile on the Foundation soil is almost not transmitted, which reduces the bearing capacity of the known pile.Therefore, the application of such piles is sometimes appropriate in irrigated clay soils in the liquid state. However, the Foundation soils have low bearing capacity, especially at the rate of deformation, which also reduces their carrying capacity and scope famous piles.There are also the disadvantages of the known pile when it operates in ground subsidence. Because when soaking is their drawdown, the parts of the trunk between the broadening is the destruction of the walls of the borehole and soil displacement to the side surface of this section of the trunk. In this case, the soil passes the additional load (load equal to its own weight allowing ground) on the pile through the top face of the broadening and also reduces the load bearing capacity of the known pile.Also, when sinking in loose soil layers section of the trunk with the broadening on the side surface of the broadening is significant friction force, which prevents the immersion piles, resulting in significant energy consumption during the dive.The purpose of the invention is to increase the specific carry is a General view; in Fig. 2 is a view along arrow a in Fig. 1; Fig. 3 is a General view of the piles, the embodiment of Fig. 4 is a view along arrow B in Fig. 3; Fig. 5 is a General view of the piles, the embodiment of Fig. 6 is a view along arrow b of Fig. 5; Fig. 7 is a General view of the piles, the embodiment of Fig. 8 is a view along arrow G in Fig. 7; Fig. 9 is a General view of the piles, the embodiment of Fig. 10 is a view along arrow D in Fig. 9.The pile includes a cap 1, a barrel 2, bottom 3 and broadening the overlying ening 4, 5, 6, located at the height of the shaft 2 at an average distance from each other in range (10-60) b, where b is the departure of the overlying broadening, and the average projected area (total area overlying the broadening divided by the number of Bay) on the horizontal plane of the broadening above the bottom of the broadening on the section of the trunk, not exceeding 2/3 of its height exceeds not less than 1.2 times the area of the projection on the horizontal plane of the lower broadening. The broadening can be performed in the lower parts of one or two lateral sides of the trunk. At least two side faces 7 of the barrel 2 may be inclined to the transverse axis of the barrel, thus broadening located on the inclined faces of the shaft.Pile works as follows. When immersing the lower waseela part of an array of ground from space, in which he introduced the section of the trunk, is displaced beyond the edges of the lower end, i.e. to the side edges of the piles. In turn, displaced outside of the barrel, the soil passes the pressure on the soil particles surrounding the pile, and receives a seal. But in this moment there is the destruction of relationships between soil particles surrounding the pile.With further immersion piles in the array allowing soil embedded section of the trunk with the broadening 3.Because allowina array connection between soil particles is destroyed, it requires less effort on the implementation allowany soil ening 3 pile shaft. In turn, broadening 3 are immersed in the soil compacted at immersing the lower part of the trunk. Therefore, the soil from the bottom faces of the broadening and side side surface of the pile shaft receives an additional seal.With further immersion of the pile in contact with soil shall overlying ening 4. Since the area of the projection on the horizontal plane overlying the broadening than the area of projection of the lower broadening, overlying broadening embedded in compacted array allowing soil. In the process of immersion in allowany the soil in the Oia. With further immersion piles degree of compaction allowing of soils at the site between the broadening increases, which increases the adhesion forces of the soil with a lateral surface of the pile and increases the reactive resistance of the soil on the bottom face of the broadening and therefore increasing the unit bearing capacity of the pile.In the last step of the pile, the upper broadening overlap in terms of the space between the bottom and side faces of the barrel, resulting from the introduction into the soil underlying the broadening. Displaced upper Bay soil fills this space. Further dive into the ground the top of the broadening occurs seal allowing ground.Due to the fact that the area of the projection on the horizontal plane overlying the broadening exceeds the area of the projection on the horizontal plane of the lower Bay, it is provided by the presence of compacted soil, as in the zone of coupling with the side surface of the barrel between the Bay and in the contact zone of the bottom and side faces of all of the broadening.Because the bottom and side faces of all of the broadening interact with compacted soil, passing on the Foundation soil loading the bots.Since the broadening is located at a distance from each other equal to (10-60) b, where b is the departure of the overlying broadening, there is a dispersion in allowina array of soil transmitted through the broadening of the load on the Foundation soil from the pile and thereby eliminates a slice of soil along the shaft within the area of projection of the overlying Bay. In this case, the bottom face of the broadening interact with the Foundation soil as the frontal surface of the pile (as the bottom of the pile).Thus, the increased specific bearing capacity of the piles and increase the rigidity of the fixing piles in the ground than at the same time is increasing the bearing capacity of the pile deformations of its Foundation.The upper parts of the pile, working in ground subsidence, it is necessary to perform without broadening. In this case, the section of the trunk above the upper Bay when driving piles, a gap between the bottom and side surfaces of the piles. The gap between the ground and the side surfaces of the piles in the thickness of the loose layer of soil reduction of energy consumption when submerged piles, because there is no friction on the side surfaces in the area of the barrel that facilitates immersion piles.In this sluchae friction when the drawdown subsidence of the soil. 1. DRIVEN PILE, which includes having the tip of the barrel with the broadening spaced tiers in height at a distance from each other, characterized in that order of increasing specific load-carrying capacity by increasing the degree of compaction allowing soil along the pile shaft and reduce energy consumption during dives mostly in subsiding soils, the average size of the projection on the horizontal plane of the broadening above the bottom of the broadening on the section of the trunk, not exceeding 2/3 of its height exceeds not less than 1.2 times the area of the projection on the horizontal plane of the lower broadening.2. Pile on p. 1, wherein the quenching is performed on the lower parts of one or two lateral sides of the trunk.3. Pile on PP.1 and 2, characterized in that at least two side faces of the barrel is made oblique to the transverse axis of the barrel, and broadening are located on the inclined faces of the shaft.4. Pile on PP. 1 to 3, characterized in that the broadening is located at the height of the trunk at a distance from each other (10 - 60)b, where b is the departure of the overlying broadening, and the departure of the lower broadening does not exceed 1/2 of the diameter or the width of a face, which is broadening.
FIELD: building, particularly pile foundations built on weak and collapsible ground.
SUBSTANCE: precast pile has body composed of trapezoidal sheets twisted in longitudinal direction relative axis of symmetry and bent along screw line with the use of conical mandrel. The sheet width decreases in longitudinal direction. The sheet sides are connected one to another along pile body perimeter so that hollow screw convergent conical surface is created over the whole pile body length. The conical surface has screw lines arranged along outer perimeter thereof and conical screw grooves formed on inner surface over the full pile body length, as well as cutting edges.
EFFECT: increased load-bearing capacity of the pile and simplified driving thereof.
2 cl, 6 dwg
FIELD: building, particularly pile foundations to be erected in soft and collapsible ground.
SUBSTANCE: precast pile comprises shaft composed of sheets. The sheets are spirally wound and connected one to another by the first sheet sides. The sheets are wound in longitudinal direction relatively axis of symmetry and bent along helical line around conical mandrel so than sheets taper downwards along the full shaft length. The sheets have triangular shapes and are connected one to another by sheet sides along shaft perimeter so that hollow multi-start conical surface tapering in downward direction is created. The conical surface is provided with at least three conical helical lines and has varying lead. The pile has cutting blades with sharp ends at apex thereof.
EFFECT: increased load-bearing capacity and simplicity of pile driving in ground.
FIELD: construction, particularly foundations adapted to bear considerable vertical and horizontal loads and used in landslide control.
SUBSTANCE: pile comprises vertical main stem with trough-shaped recess adapted to secure sliding strut by means of use of hinge. The strut has sharpened lower end. Trough-shaped recess also has guiding grooves and fixing cavity for strut retaining in working position.
EFFECT: increased stability of vertical precast pile taking horizontal loads.
FIELD: construction industry.
SUBSTANCE: invention refers to construction industry, especially in constraint environment, namely to elements and methods of solid erection of elements of buildings and constructions, and namely reinforced-concrete piled foundations designed for high loads. Method of erecting piled foundation designed for high loads involves submersion of metal casing pipe, formation of conductor by fixing the system of removable horizontal and vertical aligning hydraulic jacks on metal casing pipe. Formation of well under cover of bentonite slurry with embedding in weakly fractured limestones, replacement of dirty bentonite slurry by freshly prepared one with removal of boring mud from well bottom. Formation of pipe and reinforcement cage in the form of connection of pipe and reinforcement parts, installation of umbrella- device limiting the well level filled with concrete mixture approximately at the boundary where reinforcement cage is changed into pipe cage. Suspension of pipe and reinforcement cage above conductor with its reinforcement part directed downwards, vertical alignment and erection of pipe and reinforcement cage in the well with eccentricity compensation and attachment of gaps from walls and bottom of well by means of conductor. Installation of tremie pipe inside the cage and uninterrupted upward concreting of pipe and reinforcement cage and well bore under initial high concrete mixture supply pressure, pressure decrease at concrete mixture reaching umbrella-limiting device. Further concreting with reduced concrete mixture supply pressure and loss of concrete mixture supply when upper level of pipe part of pipe and reinforcement cage is reached. Removal of tremie pipe from well, filling of cavity between conductor and pipe part of the cage with coarse filler, temporary exposure of concrete monolith and removal of conductor.
EFFECT: simplifying technology and improving efficiency when installing piled foundation designed for high loads.
13 cl, 1 dwg
SUBSTANCE: invention is related to construction, in particular to pile foundations installed in watered sandy soils. Driven pile consists of shaft with through longitudinal hole, sharpened tip, device for increase pile bearing capacity, which is arranged between shaft and tip in the form of insert with longitudinal hole attached to them and having elastic shell with facilities for fixation of its upper and lower ends, covering cylindrical surface of insert; cavity between elastic shell and cylindrical surface of insert, protective jacket that slides in radial direction with facilities of its fixation on shaft, covering elastic shell; there is a radial hole in the shaft, which connects longitudinal hole with cavity transformed into support belt after pile submergence at specified depth, filling of cavity hardening solution via holes in shaft and solution hardening. Pile shaft may be prismatic or cylindrical, and tip - conical, pyramidal or wedge-like.
EFFECT: pile has high bearing capacity with reduced force of submergence in soil.
4 cl, 7 dwg
SUBSTANCE: helical shaft is made of serially arranged sections, every of which is mounted from two pairs of triangles joined by lateral sides, at the same time the first pair is made of two identical pairs of isosceles triangles, and the second pair is made of an isosceles triangle equal to the isosceles triangle of the first pair and an equilateral triangle, sides of which are equal to a lateral side of the isosceles triangle, besides, each subsequent section is turned in respect of the next one by 120°.
EFFECT: expansion of functional capabilities.
1 cl, 5 dwg
SUBSTANCE: pile with increased resistance to swelling, used in heaving soils and representing a lengthy body in the form of a steel pipe submerged to the depth below the active layer of the heaving soil. The steel pipe diameter at the section of the pile height submerged to the depth below the active layer of the heaving soil is equal at least 219 mm and is made as more than this pipe diameter in the section of the pipe height submerged to the depth of the active layer of the heaving soil and equal to at least 159 mm, and the expanded tip is made with a helical anchor.
EFFECT: simplified design, reduced weight of a pile, less embedding into soil to reduce scope of civil works, reduced cost of foundations erection under conditions of heaving soils.
SUBSTANCE: invention relates to the field of building, namely to the construction of driven piles for soils characterized by presence of the process of ground frost heave. Pile with increased resistance to heaves is used in heaving soils and represents an elongated body in the form of a steel pipe. Diameter of the steel pipe at the site of the pile height, diving to a depth below the active layer of heaving soil, is not less than 219 mm and is performed larger than the diameter of the pipe at the site of the pile height, diving to a depth of the active layer of the heaving soil and equal not less than 159 mm.
EFFECT: simplified design, reduction of weight of the piles, reduction of its penetration into the soil in order to reduce the amount of construction works, reduction of the cost of building foundations construction in the conditions of heaving soils.
1 dwg, 1 ex, 1 dwg
SUBSTANCE: pile includes the reinforced concrete shaft consisting of superior and inferior parts, mounted in the hole, and grouting solution. In this case, the lower part of shaft is designed in the form of prismatic element with flat front edges normally disposed to its vertical axis, and cross-section figure of the element is inscribed in the hole circle.
EFFECT: simplification of pile manufacturing.
SUBSTANCE: pile includes a screw shaft that consists of sections alternatively connected to each other throughout the length of the screw shaft with its end openings in the form of polygons. Each section is assembled of two subsections. The first subsection consists along the perimeter of an even number (at least four) of similar first isosceles triangles alternatively connected with their lateral sides to lateral sides of at least four similar second isosceles triangles, the bases of which are larger than bases of the first four isosceles triangles, with formation of small and large end openings in the form of polygons. The second subsection consists of similar equilateral triangles (at least four) alternatively connected along the perimeter and having lateral sides equal to bases of the second isosceles triangles of the first subsection, with lateral sides of at least four similar isosceles triangles at an apex angle of 90°, with formation of small and large end openings in the form of polygons. The large end opening in the form of a polygon of the first subsection is equal to the small end opening in the form of a polygon of the second subsection; subsections are connected to each other in a section with their end openings in the form of polygons.
EFFECT: increasing carrying capacity of a pile, its stiffness and vibration resistance.
FIELD: bulkheads, piles, or other structural elements specially adapted to foundation engineering, particularly concrete or concrete-like piles cast in position with enlarged footing or enlargements at the bottom of the pile.
SUBSTANCE: reinforcement device is used to erect pile foundation with the use of foundation pile having at least one longitudinal cavity. Reinforcing device comprises a number of joined reinforcement members hingedly connected with central annular member located so that reinforcement device may be collapsed during installation and erected during device usage. Reinforcement device is connected to pile by at least one member working in tension. Foundation pile reinforced with the use of said device and method for foundation pile driving and pile bottom reinforcement are also disclosed.
EFFECT: increased uniformity of reinforcement distribution over pile bottom, improved compression and stretching force damping, decreased labor inputs and material consumption.
36 cl, 25 dwg
SUBSTANCE: invention relates to construction and can be used in structures' foundation, receiving considerable horizontal and pull out loads. Anchor pile includes shaft, reinforced by framework. Bottom part of pile consists of two pivotally connected to shaft quarters, located relative to each other bias section of shaft and allowing elongations on section of point, which are enclosed into removable metal sheath. Shaft is implemented with opening, in which it is inserted pin for removing of sheath. Quarters allow ability of turn at redriving.
EFFECT: perception of pull out loads.
FIELD: machine building.
SUBSTANCE: additional fixation of anchor driven into soil for a certain depth, is done by impression of sliding fixtures by working fluid. Hollow rod of anchor is arranged with hollow multiturn screw tip, lower blade of which is equipped with bits - fangs. Sliding fixtures represent multistep telescopic hydraulic cylinders of single-sided action arranged in cavities of bulges on case of screw tip blades. On upper end part of screw tip there is a bulge with slots for connection teeth of assembly rod, representing a pipe. In cavity of rod and screw tip there is an isolated line of working fluid supply.
EFFECT: improved retention capacity of anchor.
5 cl, 6 dwg
SUBSTANCE: anchor pile comprises a traction rod in the form of bars with identical diameter connected by means of couplings, and the first bar is equipped with a crown or a chisel. The pile is equipped with bars of increased diameter and connecting couplings with boring blades. Diameters of coupling holes with boring blades correspond to various diameters of bars.
EFFECT: reduced material intensity and reduced labour intensiveness in arrangement of an anchor pile.
SUBSTANCE: during arrangement of soil anchors in a structure comprising a traction rod in the form of separate bars, connecting couplings and a crown or a chisel, a coupling in the areas of anchor roots arrangement are replaced with couplings equipped with drilling blades and transverse holes for passage of a working fluid closed by temporary plugs.
EFFECT: reduced material intensity of a structure and reduced labour intensiveness.
SUBSTANCE: invention relates to construction and may be used in arrangement of pile foundations. To reduce material intensity and to increase reliability of design in a root pile with local flares, comprising a bit 11, rods 1, connecting couplings 3 and crown couplings 2 with cavities in drill blades 5, in which stop elements are installed, according to the invention, the stop element in each crown coupling 2 is made in the form of a valve made of a cone-shaped plunger 6 with a return spring 7, fixed inside the cavity, at the same time the diameter of the output hole 9 in the crown coupling 2 must be 1.5-2 times less than the diameter of the input hole 10.
EFFECT: reduced material intensity and increased reliability of a structure.
SUBSTANCE: invention relates to construction and can be used in structures of floating piles intended for construction of pile foundations, and erection methods of such piles. A pile having a shaft with an internal longitudinal cavity filled with concrete and a carrying capacity increasing device located in its lower part. The pile shaft is made in the form of a polymer pipe having external and internal longitudinal ribs, and the pile carrying capacity increasing device is made in the form of a support concrete bearing plate located under the pile shaft.
EFFECT: improvement of adhesion of pile surface with surrounding soil, increase of carrying capacity and reduction of material consumption.
8 cl, 5 dwg