A method of manufacturing a printed piles

 

(57) Abstract:

The invention relates to the construction and related method of construction ramming piles. The new method is that the drilling and subsequent extraction of the drilling Assembly carry out the separation at the bottom of the wells of the sludge layer, and then well install with the formation of the annular space of the casing with a closed lose cover the bottom end, and the inventory of electric discharger and a pipe for feeding hardening of the material is installed in the cavity of the casing along the axis of the borehole, and then carry out doporueene casing with the displacement of the sludge layer at the bottom of the annulus, then the cavity of the casing fill-curing electrically conductive material with a branch stub from the casing and start moving casing pipes up with a simultaneous flow of solid material into the borehole, ousting him in the annulus, and a layer of slurry from the lower part of the annulus to the surface, in this case the excitation in each zone of high voltage electrical discharges in hardening the conductive material is carried out at the location of the electrical rasra Aut together with the rise of the casing or independently of it. In the well can install the casing placed in the cavity reinforcing cage, and move the height of the well casing and the discharger is done by providing a stationary position of the reinforcement cage in the well. 1 C. p. F.-ly, 11 ill.

The invention relates to the construction, namely the technology of piles in soils, where there is stability of the walls of the boreholes can be used for pile foundations, new construction of buildings and structures, reconstruction of old buildings and constructions of various purpose.

A known method of manufacturing a printed piles [1] 1987, including installation of valves and the flow of solid material in the previously traversed by pneumotropica the borehole diameter less than the diameter of the generated piles, and then seal hardening material, and simultaneously with the installation of the valve hole extend over the entire height, and the flow of solid material is carried out in conjunction with the formation of the camouflet broadening by a series of high-voltage electrical discharges, the number of which is determined from the desired radius camouflage broadening, radius camouflage broadening for izvodyat height well high-voltage electrical discharges.

This method has significant disadvantages: the difficulty and sometimes impossibility of complete removal of cuttings from the borehole bottom, which, being under the fifth piles, reduces drag piles. When performing high-voltage electrical discharges in the well is the collapse of the borehole walls and the movement collapsed to the ground in the incoming hardening material, which reduces the strength of the material removal of the piles.

When immersed reinforcing cage in the hole partially filled pateksim clay soil, reinforcing bars at this length'm entwined soil, which further deteriorates the adhesion of solidified material on the valve and reduces the strength of the resulting design of the piles.

In a separate dive reinforcing cage and the working spark gap in well with their great flexibility and length lots of difficulties on the exact location in the borehole, which lengthens the process of making piles.

When performing high-voltage discharges in layers structurally unstable soils is restructurirovanie these soils and decrease the bearing capacity of piles by reducing the resistance on the lateral surface.

The quality of the destination, with the invention of the largest number of common essential features.

A known method of manufacturing a printed piles includes the drilling of wells, installation inventory electric spark gap, the flow in the well-curing electrically conductive material, the excitement in him a high-voltage electric discharges through a spark gap with a moving zone of excitation from the bottom up and the subsequent extraction of the discharger.

However, the known method has significant drawbacks that do not allow us to fully exploit the advantages of technology, since it is not guaranteed the quality of the barrel and the abutment piles due to the non-uniformity of material removal, under the fifth pile remains sludge, which when further high-voltage discharges are not sealed itself and does not allow to reliably seal the ground under the heel of the piles. All this reduces the bearing capacity of the pile in the soil and the material of the barrel.

The objective of the invention to provide a novel method of manufacturing a printed piles, which would allow to get a quality barrel and heel piles, to ensure high load bearing capacity and strength of the material of the barrel, as well as reducing the time of production piles.

Task d is REGO electric spark gap, flow in the well-curing electrically conductive material, the excitement in him a high-voltage electric discharges through a spark gap with a moving zone of excitation from the bottom up and the subsequent extraction of the spark gap, drilling and subsequent extraction of the drilling Assembly carry out the separation at the bottom of the wells of the sludge layer, and then well install with the formation of the annular space of the casing with a closed lose cover the bottom end, and the inventory of electric discharger and a pipe for feeding hardening of the material is installed in the cavity of the casing along the axis of the borehole, and then carry out doporueene to the bottom of a well casing with the displacement of the sludge layer at the bottom of the annulus, then the cavity of the casing fill-curing electrically conductive material with a branch stub from the casing and start moving casing pipes up with a simultaneous flow of solid material into the borehole, ousting him in the annulus, and a layer of sludge from the bottom of the annulus to the surface, in this case the excitation in each zone of high voltage electrical discharges in the hardening conductive the casing, moreover, the movement of the discharger up exercise together with lifting casing or independently of it.

In the well can install casing pipe located in the cavity reinforcing cage, and move the height of the well casing and the discharger is done by providing a stationary position of the reinforcement cage in the hole.

This new technical solution to all your set of essential features allows to produce printed pile in the ground, where not provided the stability of the walls of the boreholes, and structurally unstable soils (silts, peat, water-saturated tatahouine soils, etc).

In Fig. 1 shows the drilling of the well; Fig. 2 drilling string has reached the desired depth of the well; Fig. C the rise of the drilling string from the well and the formation in it of the sludge layer; Fig. 4 lowering into the well casing, the lower end of which is closed, lost by a cover; Fig. 5 the displacement of cuttings from the borehole bottom in the lower part of the annular space and filling the cavity of the casing hardening conductive material; Fig. 6 submission conductive hardening material into the borehole bottom; and Fig. 7 - wasbo end of the casing relative to the spark gap; in Fig. 8 lifting height of the well casing pipe and the spark gap of Fig. 9 making printed piles in layers of different soils; Fig. 10 is a variant of the displacement of a spark gap with respect to the lower end of the casing; Fig. 11 moving along the height of the well casing pipe and the spark gap when the other version of their displacement relative to each other.

The proposed method is implemented as follows.

Any known method, such as rotary drilling using a drilling machine of the type SKB-4 or UGB-50, PBU, URB-2A produce drilling a cylindrical hole 1 diameter (Fig. 1 3). On reaching the required depth of the drilling string 2 is extracted from wells 1, leaving at the bottom of the wells of the sludge layer 3 (Fig. 3) height of 15 to 20 cm, which as extraction drilling string from the well is increased to 1 to 3 m due to the fall of the drilled soil drill 2, the filtration of water and soil from the walls of the borehole 1.

Then in the hole 1 lower casing pipe 4 in the cavity which previously placed along the axis of the bore of the spark gap 5. The bottom end 6 of the casing is closed, lost by a plug 7, and the gap feature at the lower end of the casing. The lower end of the casing is antropologo material and the high voltage cable 9 spark gap. Then carry out doporueene casing 4 to the bottom hole with the displacement of losing the cap of the sludge layer 3 in the lower part of the annular space 10. After reaching the bottom hole into the cavity of the casing serves hardening conductive material by connecting rastvorovoda pipe 8 hose to rastvorennaya mechanism (not shown) and the material rises in the cavity of the casing 4 from the bottom up (Fig. 5). After filling the cavity of the casing 4 hardening conductive material 11 of the casing 4 is moved up the borehole 1 by the value of h1lose the cap 7 is separated from the lower end 6 of the casing 4 under the action of mass hardening conductive material 11, filling the cavity of the casing 4. When lifting the casing 4 this material is displaced in the annulus 10, displacing the slurry 3 from the bottom of the annular space 10 to the surface (Fig. 6).

Discharger 5, remaining in place, connect with his high-voltage cable 9 to electro-installation (not shown) and serves high-voltage electrical discharges, which are losing the cap 7 descends and expands the walls of the well 1 to the isanti well, produce movement of the casing 4 by the value of h for the height of the well 1 and the corresponding movement of the spark gap 5 in the height of the wells in each zone discharger have offset relative to the lower end of the casing 4. The movement of the discharger are carried out either in conjunction with casing pipe, or independently of it. On the new horizon wells 1 produce a new series of high-voltage electrical discharge spark gap 5, pre-shifting it relative to the lower end 6 of the casing 4. This allows you to get the next extension of the walls of the borehole 1 and seal the previously laid hardening conductive material (Fig. 8).

Then again raise the casing 4, shift discharger 5 height well and perform a new series of high-voltage electrical discharges. Repeat several times, until it formed the pile shaft in the well desired height.

Possible option when you need to reinforce the pile shaft reinforcing cage (not shown). In this case, the reinforcing cage is pre-inserted into the cavity of the casing 4 and the entire structure is lowered into the borehole 1. Then make all of the above operations, and move around you is a skeleton in the borehole 1.

The invention was tested in the execution of pile foundations technical building of the railway station "New Village" , S.-Petersburg. In the base areas of approbation from a depth of 1.5 to 2.0 m overlain by silty water-bearing sand, and when removing the drill after drilling a well the last quickly went numb almost to the original level of the sand. So was drilling auger boreholes with a diameter of 230 mm to a depth of 4.5 m In the well was lowered into the casing with a diameter of 219 mm with loose cover in the form of a metallic disk. Previously in the cavity of the casing was placed reinforcing cage, and inside along the axis of the borehole discharger with a pipe for supplying curing electrically conductive material. This casing was zadavlivali to the borehole bottom, the test showed the absence of sludge, after which the cavity of the casing was filled hardening the conductive material is a cement-sandy solution to the full height of the well. Then the casing was lifted to a height of h1=20 cm height of the well 1, and hardening the conductive material in the cavity of the casing squeezed the plug from the lower end of the casing in the face and he filled the lower part of the well and mitrany electrical discharges to 15 digits on each horizon well with the following parameters: voltage 8 kV, capacity 1200 μf, the step of lifting the casing and the gap height h=40 cm

After curing was performed static tests made piles, which showed the bearing capacity of piles 45 so the Expected bearing capacity of piles in the calculation according to the existing methods 35 so

This suggests that the proposed method of making piles allowed, to increase the bearing capacity of piles up to 30%

In special cases, when the well passes through the layer of stable ground 12, and then the layers are structurally unstable soils 13 and 14 (Fig. 9 11) use two variants of the displacement device 5 relative to the lower end 6 of the casing 4 (Fig. 9 and 11).

So to the sole structurally unstable soils 13, 14 piles are made at offset discharger 4 below the lower end 6 of the casing 4. When the transition layer of a structurally unstable soil 13 pile made at offset discharger 5 above the lower end 6 of the casing 4 (Fig. 10 and 11). This produce lift casing to a height of h2and the spark gap 5 to the height h (Fig. 10). Conductive hardening material 11 under the action of its own weight stems in the bottom of the borehole 1, pushing her wall (dotted image is doprovodny hardening material 11 receives additional pressure and condenses the previous layers of the material of the pile shaft, additionally, expanding the walls of the well and forming a broadening of the trunk (Fig. 11). This post hardening conductive material 11, which is in the cavity of the casing 4, serves as a kind of prigruzki preventing the spread of energy high-voltage electrical discharges up well. The situation is similar with the annular space 10, in which the layer of sludge 3 superseded by hardening conductive material almost to the top of the well.

Naturally, depending on the state of the soil 14, the composition of its layers, the energy of high-voltage electrical discharges is chosen empirically. However, the sequence of operations is maintained. In particular, in the case hereinafter produce lift casing 4 together with the spark gap 5 to the height h and perform another series of high-voltage electrical discharges (Fig. 11). These operations should continue until the completion of the entire soil layer 14, and then again change the direction of movement of the lower end of the casing and the discharger relative to each other in the well and repeat the previously described operation method, until it is completely made the pile shaft. In the manufactured printed pile with high naivnoi piles, including drilling, installation inventory electric spark gap, the flow in the well-curing electrically conductive material, the excitement in him a high-voltage electric discharges through a spark gap with a moving zone of excitation from the bottom up and the subsequent extraction of the spark gap, characterized in that the drilling and subsequent extraction of the drilling Assembly carry out the separation at the bottom of the wells of the sludge layer, and then well install with the formation of the annular space of the casing with a closed lose cover the bottom end, and the inventory of electric discharger and a pipe for feeding hardening of the material is installed in the cavity of the casing along the axis of the borehole, then carry out doporueene to the bottom of a well casing with the displacement of the sludge layer at the bottom of the annulus, after which the cavity of the casing is filled conductive hardening material with a branch stub from the casing and start moving casing pipes up with a simultaneous flow of solid material into the borehole, ousting him in the annulus, and a layer of sludge from the bottom of the annulus to the surface, priale carried out at the location of the electrical discharger offset relative to the lower end of the casing, moreover, the movement of the discharger up exercise together with lifting casing or independently of it.

2. The method according to p. 1, characterized in that the borehole install casing pipe located in the cavity reinforcing cage, and move the height of the well casing and the discharger is done by providing a stationary position of the reinforcement cage in the well.

 

Same patents:

Driven pile // 2082851
The invention relates to the field of construction and can be used for dipping precast concrete piles of solid section in the ground way driving

The invention relates to the construction, namely, technology ramming piles and can be used in the installation of pile foundations in the process of strengthening and reconstruction of existing or construction of new buildings and engineering structures

The invention relates to the construction, in particular to the construction of pile foundations

Anchor pile // 2026923

Pile // 2002896

The invention relates to the field of construction, and particularly to a method of manufacture of piles

The invention relates to the construction, in particular to the construction of pile foundations

The invention relates to the construction, namely the implementation of the piles in the ground

The invention relates to the field of construction, and in particular to methods of manufacture of piles in the ground

The invention relates to the construction, namely, technology ramming piles and can be used in the installation of pile foundations in the process of strengthening and reconstruction of existing or construction of new buildings and engineering structures

The invention relates to the field of construction and can be used for the construction of foundations of piles of

FIELD: building, particularly pile foundation building.

SUBSTANCE: method involves drilling well; placing inventory casing pipe in well, wherein casing pipe has closed lower end and is provided with inventory electrical discharger; feeding concrete mixture in well and initiating high-voltage electrical discharges in well along with removing casing pipe and forming shaft. Well is formed by driving inventory casing pipe in ground; sealing casing pipe from top thereof and arranging check valves used for concrete mixture pouring, for supplying pressurized air and water, in upper pile part; forming channels for concrete mixture passage in casing pipe; providing above channels with self-opening valves. Electric discharger is fixedly connected to casing pipe so that discharger extends beyond lower part thereof and form lower casing pipe end closed when casing pipe is driven in ground. Inventory casing pipe is driven in ground and lower end thereof is deepened in support layer by pressing action combined with high-voltage electric discharge energy. Casing pipe is removed from ground and shaft forming is performed simultaneously with pulling static load application, feeding compressed air and initiating electrical discharges in concrete mixture.

EFFECT: increased load bearing capacity of cast-in-place pile.

6 dwg

FIELD: building structures, particularly shallow foundations.

SUBSTANCE: method involves creating well by ground excavation, introducing preparatory portion of hardening material in well hollow including calculated part of hardening material; arranging explosive charge in lower well part; securing explosive charge; blowing explosive charge up to create cavity for widened foundation post part; crushing and widening above calculated part after explosion; introducing additional portion of hardening concrete in well up to 4/5 of well height; filling it with calculated part of above material portion. Concrete for casting is used as preparatory hardening material.

EFFECT: reduced time, increased simplicity of foundation building and reliability.

2 cl, 5 dwg

FIELD: building and construction.

SUBSTANCE: method includes serial vibration immersion of inventory elements into soil, which are mated between each other, and their following vibration extraction with concurrent filling of hollow in soil with concrete mixture. Inventory elements are used, which are made in form of profiled posts, having gates in lower portion, closed during immersion in soil and opened by flexible links during extraction of elements from soil and feeding of concrete mixture. At the same time profiled elements of longitudinal walling have lesser length, than length of profiled elements of vertical posts, which during immersion are pressed in for greater depth than profiled elements of longitudinal walling. First, profiled element of longitudinal walling is immersed, and then via guiding conductor profiled element of vertical post is densely mated to it and is than immersed. Concrete mixture is loaded in profiled element of longitudinal walling with its extraction with open gates and extracted element is immersed in next position adjacently to previous profiled element of vertical post being in soil. Concrete mixture is loaded into profiled element of vertical post during its extraction with open gates and extracted element if immersed into following position with concurrent mating to previous profiled element of longitudinal walling with use of guiding conductor. Then inventory elements are immersed again. Device for construction of bearing-limiting structures in soil includes crane or pile driver with vertical guide, vibration immersion driver and at least two inventory hollow elements. Inventory elements are made in form of profiled elements of longitudinal walling and profiled elements of vertical posts. Profiled elements of longitudinal walling have length less than length of profiled elements of vertical posts, which are made of hollow rectangular profiles, rigidly interconnected by solid rib along transverse axis along whole height of element, while vertical guide in lower portion is provided with guiding conductor.

EFFECT: higher efficiency, broader functional capabilities.

2 cl, 13 dwg

FIELD: building, particularly piles for permanent and temporary foundation structures and artificial bases.

SUBSTANCE: method involves boring well; supplying hardening material in well; forming high-energy electric pulses to generate electric discharges with the use of discharger moving through hardening material; generating high-energy low-voltage pulses and forming additional low-energy high-voltage pulse simultaneously with generating each high-energy pulse to excite initiative electric discharge in moving discharger.

EFFECT: increased operational reliability and electric safety.

2 cl, 2 tbl, 1 dwg

Up!