Bearing pile

FIELD: building, particularly for constructing foundations of various building structures.

SUBSTANCE: bearing pile comprises head, rod and tip fixed to embedded rod part by embedded member. The tip is formed of thermoplastic concrete and has electric heater located inside the tip. Electric heater heats the tip after driving thereof into ground as far as it will go to obtain softening temperature of 80-150°C. Then the pile is fully driven in ground. Electric heater wires are placed in tube in longitudinal rod direction and brought outside under pile head for connection thereof with electric power source.

EFFECT: increased load-bearing pile capacity due to provision of widened pile tip support area.

2 cl, 5 dwg

 

The invention relates to the field of construction and can be used in the construction of foundations for various structures.

During construction in the conditions of weak soils has been widely used for pile Foundation, consisting of submerged (hammered) into the ground and connected by a grillage.

One of the most common types of pile is the pile-hour, load-carrying capacity which depends on the cross-sectional area of its tip and the strength of the material of which it is made [1]. The lateral surface of the pile-rack does not transfer efforts due to friction with the ground, because it is under load almost does not move down because of the low deformability of the soil under its tip.

Known pile-front useraudit tip at the expense of the disclosure metal plates tip after driving piles-hours to "opt-out". However, their use is limited due to high metal content.

The objective of the invention is to increase the bearing capacity of the piles stands on the ground.

This task is achieved by the fact that the tip of the pile-rack made of thermoplasmata strength of at least grade concrete 300 and contains inside a heater in the form of nichrome spiral for his heat.

The essence of the invention lies in the fact that after driving the pile stands up to "opt-out", however, is echnic it is heated to a temperature of 80-150° With, i.e. to a state of softening, and then you dosebuy. In the softened material of the tip under the pressure of the rod breaks in the sides from the piles stands, forming its broadening. After natural cooling, the flat tip becomes the base of the stem.

The present invention is characterized by figure 2, 3, 4 and 5, where the pile-hour shows in working condition.

Figure 2 shows the pile-hour, be prepared for driving in the ground.

Figure 3 - pile hammer blows hammered into the ground.

Figure 4 - pile is full of "failure" and is in the process of heating of the tip.

Figure 5 shows a driving piles after heating of the tip, causing it to change its shape becomes flat.

General view of the pile of the rack shown in figure 1. It consists of a rod 1, tip 2 and tip 3, rigidly connected by means of fixtures 4, with a mortgage item 5 of the rod 1. In thermoplastically tip 3 mounted electric heater 6 of the nichrome coils, contacts 7 which wire 8, laid the pipe 9 along the rod 1 piles withdrawn contacts 10 out under head 2 for connection with a source of electric current 13.

Working pile-hour as follows.

Prepared to work a pile-rack (figure 2) hammer hammer 11 ground 12 figure 3. When "failure"is shown on the Phi is .4, the contacts 10 of the electric heater 6 is connected to a power source 13 and carry out heating of the tip 3. Figure 5 shows how the blows of the hammer 11 is dosebuy piles-hours, resulting in the tip 3 is widened. The positive effect is that the increase in bearing piles enables to reduce the number of piles required for the installation of foundations.

Sources of information

1. B. I. Dolmatov. Design of piled foundations in weak soils. HP: stroiizdat, 1975, p.4, 15.

1. Pile, consisting of a headstall, rod and tip rigidly connected by means of fixtures with a mortgage detail of the rod, and the tip is made of thermoplasmata brand of concrete not less than 300 located inside the heater to heat the tip of the piles after driving into the ground to obtain a “waiver” to the softening temperature of 80 to 150°With subsequent disabili piles, in this case the wires of the heater is laid on the pipe along the rod and brought out under the head for connection with a source of electric current.

2. Pile according to claim 1, characterized in that the tip is made from a mixture of rigid unplasticized polyvinyl chloride with a filler of some cement, stone flour in the ratio of 1:2-5.



 

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EFFECT: increased bearing capacity, provision of lower pile part strength alternating along pile height along with decreased labor inputs and production cost.

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Bearing pile // 2251609

FIELD: building, particularly for constructing foundations of various building structures.

SUBSTANCE: bearing pile comprises head, rod and tip fixed to embedded rod part by embedded member. The tip is formed of thermoplastic concrete and has electric heater located inside the tip. Electric heater heats the tip after driving thereof into ground as far as it will go to obtain softening temperature of 80-150°C. Then the pile is fully driven in ground. Electric heater wires are placed in tube in longitudinal rod direction and brought outside under pile head for connection thereof with electric power source.

EFFECT: increased load-bearing pile capacity due to provision of widened pile tip support area.

2 cl, 5 dwg

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.

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36 cl, 25 dwg

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EFFECT: decreased pile production time due to accelerated concrete mix hardening and improved produced pile quality.

6 cl

FIELD: building.

SUBSTANCE: invention refers to building, in particular, to strengthening of the bases under the basements. The way of strengthening of the basement erected on waterlogged priming coats and near to the located constructions includes supply of early strength concrete in the metal tubing established in driven wells, drilled through a basic part of the basement and a ground. Pipes are made with the welded boots, in pipes lower explosive charges and fill with early strength concrete, then the explosive charges are detonated, remaining hollownesses of driven wells and pipes are filled with early strength concrete.

EFFECT: provision of reliable strengthening of the basements erected in waterlogged priming coats and near to located constructions; increase of load-carrying capacity.

2 dwg

FIELD: construction.

SUBSTANCE: invention is related to methods for arrangement of pile foundations for structures, to pile foundations and shell structure for creation of widened foot for pile foundations. Method for creation of pile foundation for structures, according to which the following stages are executed on site to arrange the mentioned foundation - well for installation of foundation pipe is drilled with the help of the first auger drill. The following section is drilled under lower end of installed foundation pipe. Cavity is arranged in the specified section by means of scraper and pressure of water jet. Loose soil is removed from specified cavity by mentioned first drill. Pipe for set of tools and accessories with the second auger drill and flexible shell that envelopes the lower part of the second specified drill is lowered through foundation pipe into lower part of specified section. Excess pressure is built up in specified shell, and moulding material is injected into specified cavity, surplus of which is then removed by the second auger drill. After mentioned material hardens, the specified shell is blown off and removed via specified foundation pipe. Reinforcing device is lowered into foundation pipe. Concrete material is poured into foundation pipe, at that specified cavity is filled, and specified reinforcing device is embedded into concrete, thus creating widened foot for foundation pipe. Versions of method and pile foundation are also stated.

EFFECT: higher stability and resistance to compressing and stretching forces, lower material intensity.

5 cl, 26 dwg

FIELD: construction industry.

SUBSTANCE: invention refers to construction industry and namely to construction of bearing piles in ground rock. Device for making multi-layer sealed pile in ground rock includes, in the combination, elongated hollow tube having longitudinal axis, upper inlet end for material, open lower discharge end for material and diametre of the first external surface and common formed lower head element at open discharge end, which has diametre of the second external surface, which is more than diametre of the first external surface and made with the possibility of transmitting combination from axial and transverse stress components when hollow tube is lowered. Head element consists of common attachment to hollow tube; at that, head element includes lower driving end which in general has configuration of flattened cone between head element of external surface and lower discharge hole made in the lower driving end, and back end having in general the configuration of flattened cone, and cap of the head element covering lower discharge hole. Lower head element with the cap and hollow tube are formed for being introduced into ground rock and for displacing the earth when hollow tube with lower head element and the above cap is lowered into ground rock so that a cavity is formed in ground rock. The cap is at least partially removed from lower discharge hole when hollow tube is then lifted from the formed cavity in order to perform passage of material through lower discharge hole to the cavity section released with hollow tube and lower head element. The latter has the form of cross section and the sizes which are more than the shape of cross section and sizes of hollow tube in order to decrease friction forces on hollow tube when penetrating into ground rock and being removed from it.

EFFECT: improving reliability of the pile and capacity and production effectiveness of piles.

34 cl, 26 dwg

FIELD: oil-and-gas.

SUBSTANCE: invention related to construction, particularly can be used for bored piles with enlarged base arrangement. The method includes hole boring, hole opening with mechanical clampshell enlarger, reinforced cage installation and filling in the hole with concrete mixture. Developing enlargement with ration of enlargement diametre to hole diametre, equal de/dh≥2 with rotation velocity equal n=20-100 revolution per minute, dependant on ground conditions. After covering distance 0.8 h, where h - height of enlargement, stop axial supply of boring media and at that level, during 3-5 revolutions execute enlargement base cleaning, and ground collector and voids between enlarger blades complete filling. Turn on axial supply and execute boring till enlargement total height and enlargement blades closure. Take away enlarger, then concrete enlarged base, install reinforced cage and complete bored piles arrangement with concreting its core.

EFFECT: method of bored pile arrangement efficiency increase and hole enlarger design improvement, hole enlarger reliability increase, easing of ground withdrawal out form ground collector and better quality of constructed bore pile.

4 cl, 3 dwg

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