Manufacturing enterprise Arktik Hydro Stroy, which specializes in piling, will perform the sheet piling of the excavation in Moscow and the central regions of the Russian Federation.
In the process of construction on the "virgin land" increases. It is deformed, can "float". This leads to damage and even sometimes to the complete destruction of nearby buildings.
Therefore, in the city or in the built-up area, when building new facilities, the pits are fenced with sheet piles.
In accordance with 3.02.01 SNiP (“Earthworks”), sheet piling must be installed in all pits from two meters deep.
The fencing also simplifies the work on the site itself: it prevents the soil from crumbling and the walls of the pit from collapsing.
Why do they trust us?
- We guarantee strictly individual approach. We have been working for over 10 years.
- We will offer the most suitable solution for you. More than 200 completed projects
- We have reasonable prices for all types of work. You will know what you are spending money on.
- Free cost calculation and sheet piling design.
- All work is carried out by our employees. We have SRO approval.
- We have everything necessary equipment for work. Own fleet of necessary equipment.
- We guarantee the high quality of the materials used.
Experienced specialists of the company "ArktikGidroStroy" will qualitatively erect sheet piling of any level of complexity! In a short time and at an affordable cost.
What is trench fencing?
The sheet piling of the pit (or "") is a wall, load-bearing part which are sheet piles sunk into the ground. It compacts the soil, localizes the area of expected deformations, and limits their impact on neighboring buildings.
Sheet piling of pits can be temporary and permanent - in the second case, they perform the function fixed formwork for basement walls, foundations, plinths. Are used as for ground waters.
Possible applications:
- strengthening the sides of the pits for foundations, preventing shedding of the walls;
- restriction of the construction site;
- installation of hydrotechnical facilities - dams, embankments, dams, bridges, etc.;
- strengthening of foundations;
- creation of sealed tanks for industrial waste;
- landfill fencing;
- strengthening of railway lines;
- protection of underground utilities from groundwater, etc.
For your information
The depth of the excavation at which a sheet pile is required depends on the composition of the soil:
- sand - from 1 m;
- sandy loam - from 1.25;
- clay, loam - from 1.5;
- dense soil - from 2 m.
Types of piles for sheet piling of excavations
In the process of installing a sheet piling of a pit, piles are used:
- wooden;
- reinforced concrete;
Wooden ones are knocked together from boards with a thickness of 4 centimeters or connected from bars in a tongue-and-groove way. They are used at a depth of immersion within three meters. This is a one-time option because wooden piles cannot be dismantled without damage.
The most difficult thing is to immerse reinforced concrete piles. Due to the energy intensity of the process, this type is used only as a permanent fence, subsequently reinforced concrete piles are part of the foundation. Made in square section.
Metal can be used repeatedly (up to 20 cycles). They are made from profile metal, pipes, I-beams.
The Larsen sheet piling looks like a Russian L in profile with rounded lower edges (tongue-and-groove locks).
The use of pipe piles is preferable on unstable soils, which are characterized by horizontal movements. In such situations, the stability of the Larsen sheet pile may not be enough.
The strength and stability of pipes is higher due to large section and wall thickness. Like Larsen sheet piles, tubular piles are equipped with tongue-and-groove locks on the side walls and can be connected into a single structure.
Installation is carried out using steel rotary elements (they allow you to make a wall with the desired spatial configuration).
Excavation sheet piling technology
Sheet pile driving techniques:
- shock method;
- combinations of the first three.
indentation
Indentation is the safest method for nearby buildings: constant monitoring of their condition during the work is not required. It is used in densely built-up areas, incl. on loose and boggy soils.
The disadvantage of the method is bulky equipment, which is transported dismantled and assembled on site.
Vibroimmersion
Vibration immersion is a fairly universal method.
Our vibro-submersible equipment copes with almost all types of sheet piles: pipes of any diameter, I-beams, Larsen sheet piles.
On sandy water-saturated soil, the vibration method is often the only possible one.
But this technology is not among the cheapest because of the use of expensive equipment.
driving
Carried out with a hammer ( attachments for a pile driver), on dense soils - in previously made leader holes. Restrictions for use shock method– work in densely built-up areas.
When using the sheet piling of the pit, the price is the most affordable.
For your information
On so-called light soils, combinations of the methods described above can be used. For example, initially a pile is immersed by a vibromethod, and it is achieved with a hammer to the desired depth mark.
Calculation of the sheet piling of the excavation
In the process of digging a pit, the balance of interaction forces in the soil is disturbed: when the soil is excavated, the pressure on the fence from the side of the walls increases. In order for the walls not to collapse, the fence must have certain design characteristics. Stability depends on the magnitude of the impact forces, the dimensions of the sheet pile, the depth of immersion, and the method of fencing.
The calculation can be performed by the graphic-analytical method and numerical (according to the formula). There are special programs for this. Required Technical information(immersion standards, correction factors, etc.) is given in 3.02.01-87 of SNIP.
The formula takes into account the features of the work:
- pit depth;
- overturning earth pressure;
- counter torque;
- vertical ground pressure.
The formula for calculating strength in general view– M1< m/γ * M2, где
M1 is the moment of overturning force;
M2 - anti-rollover;
m is the coefficient of working conditions (from the tables of SNiP, for weak soils – 0,7);
γ - reliability coefficient (SNiP: 1.1 for dry soil, 1.2 - for high groundwater).
The calculation is performed on the lowest point of the sheet pile, since under pressure it will turn (overturn) about this point.
Features of the fencing device
In the process of arranging the pit, its walls are fixed. The latter consists of metal sheets or edged boards. Subsequently, the pick-up materials can be used as formwork when pouring underground structures. The intake is permeable, therefore, at high groundwater, a dewatering is applied. Larsen sheet piles are used to create a waterproof pick-up. Connected to each other by tongue-and-groove locks, they form an integral hermetic wall.
Often used before the construction of the wall. It reduces the shock load required to deepen the sheet pile to the calculated depth, thereby reducing soil deformation and the risk of destruction of other structures due to shock vibration.
Used in the following cases:
- on soils with high density if there is a risk of destruction of piles due to increased shock / vibration loads during immersion;
- if there are sandy layers of great thickness (from 2.5 meters) in the section of the soil, which can provoke a displacement of the soil;
- to reduce vibration and shock loads in order to minimize the risk to nearby buildings;
- if without preliminary drilling it is impossible to load the piles to the design mark.
Distribution belt technology for pit fencing
(otherwise strapping) is used to strengthen the installed wall. Strapping function - uniform distribution of loads between adjacent piles. It is made of channels or metal beams. It is installed horizontally at a depth of no more than two meters from the surface.
The anchored system can be lowered to the middle of the excavation depth. In the case of a large depth of belts, there may be several at different levels.
In addition to distribution belts, struts and struts are used to protect the structure.
Spacers are arranged horizontally with a step of about 5 meters, bursting the opposite walls of the fence. There must be at least four of them (in the corners of the pit). The struts are installed obliquely, resting on the foundation slab. In the absence of foundation slab installation of stops can be carried out on piles.
In the process of strengthening the wall, the strapping is mounted first, the rest later.
Excavation sheet piling cost
Order grooved fencing of the pit according to low prices you can in our company "Arctic Hydro Stroy".
The final amount of the order depends on:
- on the number of piles, the amount of work;
- remoteness of the object;
- the complexity of the terrain and working conditions.
Depending on your production needs and the characteristics of the facility, we will select a pile driver required power, on a wheeled or tracked chassis. We provide services to construction companies and private developers, we load piles in any quantity in record time.
Sheet piling of the pit in Sheremetyevo, made by the specialists of ArktikGidroStroy
Sheet piling in Moscow, made by the specialists of ArktikGidroStroy
Sheet piling of the pit made of Larsen sheet piling with spacers, made by the specialists of ArktikHydroStroy
Indentation of the tongue, performed by the specialists of "ArktikGidroStroy"
Vibration driving of the pipe and sheet piles during the construction of a temporary bridge, performed by the specialists of ArktikGidroStroy
- Vibroimmersion– the use of this technology involves the use of special equipment. It is it that forms the desired frequency of piling, and also sets the direction of the amplitude. All work is carried out by means of a vibrator - a special mechanism, which includes an electric motor, exciter and headrest. The latter is equipped with a mechanical or hydraulic grip, which guarantees a reliable connection of the sheet pile with the equipment. There are several types of vibrators.
- Low frequency– this model is specially designed for installation of Larsen sheet pile in homogeneous loose soils. This vibratory hammer is characterized by large dimensions, large mass, low oscillation frequency (usually no more than 9.17 Hz) and decent centrifugal force. The dynamic force of the unit reaches 1700 kN.
- midrange Most of the vibratory hammers on the market today are of this type. The operating frequency of such units is 10-30 Hz, the maximum dynamic force is 270 kN. This equipment is well suited for driving not only sheet piles, but also pipes.
- high frequency- These are units related to a new generation of equipment. Their operating frequency exceeds 30 Hz. The design of this technique includes a two- or four-shaft vibration exciter (here the type of element is related to the number of electric motors), a hydraulic cap and a dynamic load damper. These systems can work independently or with a jib crane capable of lifting up to 25 tons of cargo. Also noteworthy is the non-resonant high-frequency immersion method (it is sometimes called gentle). It is actively used in densely built-up areas: for example, in the city center or in close proximity to residential buildings.
- hammering is the fastest and cheapest Larsen sheet pile driving technology. The process is carried out by means of a hydraulic or diesel hammer. Before starting work, the soil is also examined. If the geological conditions are difficult, then preliminary drilling of the so-called. leader well. It is worth noting that its presence makes the driving process almost silent. Next, a hole is made in the metal pile in order to hook it with a hook and fix it in a cap with a petal grip, which is put on the hammer. Driving must be done carefully: even a small mistake can pull the tongue out of the lock, which can no longer be fixed. This method of immersion is not recommended for use on watered sand, as it draws in the well.
- indentation- the quietest method, often used when driving piles in densely populated bedroom communities. However, the technology also has its downsides. First of all, this is the bulkiness of the equipment, which requires special preparation of the construction site. The large mass of the unit makes it difficult to transport it. Suffice it to say that 5-6 trucks will be needed to transport disassembled equipment, while the dismantled platform weighs 60-80 tons (i.e., it is oversized cargo). Therefore, the cost of transportation is sometimes commensurate with the payment for the work itself, which is especially important when ordering a small amount of work. You also need an appropriate powerful power source: 380 volts per 50 kW. However, static indentation is used, and not so rare. This is due to the fact that this technology eliminates vibration, extra noise, as well as excessive dynamic impact on the ground. There are other advantages, among which one can note the absence of damage on the pile, which is typical, for example, for the driving method (traces of the hammer remain). And one more thing: indentation can be used on sandy and moisture-saturated soils.
- Wash technology- This method is usually used in conjunction with one of the methods described above. The essence of the technology is to install special pipes on the sheet pile, through which water is supplied under pressure (at least 0.5 MPa). It also erodes the soil directly under the lower tip of the pile. The tubes can be located on the sides of the tongue or in its center. When using this method, it is necessary to strictly control the uniformity of erosion; otherwise, the piles may deviate from the vertical. This technology cannot be used if there is a risk of subsidence of structures located nearby.
The sheet piling of the excavation is a temporary fence, which consists of wooden or steel sheet piles driven into the ground (along the perimeter of the excavation).
They are used for any type of structures with foundation devices in cases where it is impossible to develop the pits themselves in slopes. Pit fencing helps protect structures (and people's lives) from soil collapse.
Note! To save money, many construction organizations make sheet piling from pipes.
As for the sheet pile profile, it is made of special carbon steel grades St3ps and St3sp according to GOST 380. When buying, pay attention to the surface of the profile - there should be no sunsets, rolling captivity and rolled bubbles in the places of the end and lock parts.
The installation technology of such a fence involves immersing its elements in pre-drilled wells and pre-filled cement-sand mortar. It turns out that a solution is poured into the drilled wells, up to a certain level (under pressure), and only after that pipes or beams are mounted in the hole.
This technology allows you to protect the structures under construction from soil shedding, as well as significantly increase the bearing capacity of the sheet pile.
Dowel installation options
In addition to the standard method of pouring pipes or beams, there are several more types of installation that are adapted to various conditions and soil types:
- Vibroimmersion- using this method, preliminary drilling of wells for sheet piles is carried out, and then the piles are installed using vibratory pile drivers. On soft ground, it is better to use auger drills. According to estimates, the price for this method of installing fences is the lowest, due to the cost-effectiveness of the technology and the minimum use of technical means;
- Twisting – this method implies the immersion of the sheet pile into the ground (special tips are installed on the piles) by pressing and rotating. This method is in demand in the presence of ready-made, nearby structures. Thus, it is possible to prevent drilling out of the soil from the foundation;
Twisting the tongue
- impact method- carried out by driving piles into the ground using a pile driver. There are a number of limitations in using this method in dense urban areas.
During the development process, the walls of the pit, as a rule, are reinforced with a fence made of edged board or sheet metal. In order not to waste the material, after the arrangement of the building envelope, the pick-up can be used as a formwork element for concreting underground structures and structures.
The sheet piling of the pit with a pick-up is not waterproof, therefore, if the groundwater is located above the level of the bottom of the pit, you should take care of the dewatering system.
By providing such a fence, you can organize a safe area on construction site, thereby significantly speeding up the process of erecting a building or structure.
Also, I would like to note the fact that the use of sheet piles is not limited to the strengthening of pits alone.
They are widely used to strengthen coastlines and trenches, are often used in the construction of flyovers, bridges and overpasses, are used for the construction of hydroelectric power stations and structures of similar directions (locks, waterworks, moorings, bolters).
In addition, sheet piles are used in the construction of warehouses for the storage of liquid and solid industrial waste.
In general, excavation sheet piling looks like a solid wall formed from steel piles (Larsen sheet piles, I-beams, Z profile, pipe and flat sheet piles) by driving them into the ground using one of the above methods.
At its core, such a fence is waterproof and serves as a waterproof partition. But still, the main function of the fence is to prevent the collapse of the soil.
Installation of sheet piling of various types
As mentioned earlier, sheet piles are metal piles installed according to the project along the edge of the excavation (usually used material is usually used for their construction). The most commonly used pipe diameters are 219, 273, 325, 377, 426, 530 and 630 mm.
The pit is fenced according to SNiP in one of the three above ways: by twisting, driving or vibrating piles (see also the article). In any of the above cases, it is required to pre-drill literal wells.
If we talk about prices, then on the territory of Moscow and the region, the most affordable and cheapest option is roller and auger drilling with further strengthening of the well walls with high-pressure mud.
Note! Using these methods, you can order wells up to 25 m deep! The clay that precipitates greatly contributes to the strengthening of the walls and guarantees the tight fit of the pipe.
A little explanation:
- Price fluctuations depend solely on the depth of drilling, the categoricity of the soil and the working conditions;
- When ordering installation work for the installation of sheet piling, pay attention to the fact that the price is indicated only for the work, excluding the cost of the pipes themselves. First of all, this is due to the fact that the contractor does not know which pipes you want to install as sheet piles, and what their wall thickness is.
Bored piles
Bored piles are drilled wells into which different kinds metal frames. After installation, they are filled in: TsPS ( cement-sand mixture), concrete or cement-water base under high pressure.
Advice! Bored piles can be joined with each other using brown-tangential and brown-secant piles, which, together with simple piles, form a monolithic heavy-duty structure.
As for the pricing policy for bored piles, there is no clear answer. The contractor will be able to give you a price only after his personal presence at the site, after assessing the complexity of the work and the type of soil.
Note! In addition to the injection of concrete, CSP and cement-water base, special injections can be introduced into the base of bored piles, with the help of which it is possible to significantly strengthen and strengthen the structure.
Sheet piles in inclined drilling
If you decide to build a house on a hill (hill, mountain, slope), then you can not do without this construction operation. This type of work is carried out using a special drilling rig capable of drilling wells at an angle. The calculation of the sheet piling of the excavation is carried out by specialists on site (it is not recommended to do it yourself, since a small mistake can lead to fatal consequences).
Sheet pile installation
So, above we examined the methods of installing sheet piles, their types and some features when working with them. But what are they? How do they look?
If you look into the good old Soviet encyclopedia, in the section "sheet piling of the pit", you will come across two meanings of the word sheet pile:
- Sheet pile - sheet pile which received in construction practice shorter and more concise title. It is used in the construction of pits, trenches and hydraulic structures;
- Tongue - a longitudinal protrusion that enters a groove corresponding to it in shape. Serves to connect elements wooden structures(shields, beams, boards, etc.).
Knowledge of the device and an example of calculating the sheet piling of a pit are perhaps the most important elements in this case. In general, sheet pilings are temporary structures that are formed from driven (in pre-drilled wells) piles.
sheet piling calculation
So, the calculation consists in determining the required section of the sheet pile, in the depth of driving the sheet pile below the base of the pit, as well as in the selection of spacers.
Exists special instruction for builders, which will help you calculate sheet piling for various types soils (even in swampy or flooded areas).
Note! If you are installing sheet piling in sandy loam or sand, then in addition to basic calculations, you need to check the depth of driving the sheet pile itself below the bottom of the pit or the mark of its erosion according to the conditions of soil flow into the pit during rain or pumping water out of it.
Conclusion
Renting construction site fencing can help you save a lot of money and still meet all the requirements of safety engineers. In the presented video in this article you will find Additional information on this topic. Good luck!
This is one of the varieties of rolled metal, developed in its form at the beginning of the 20th century. The product has wide application from construction to hydraulic engineering. The special shape of the profile makes the tongue best solution for many construction tasks.
Larsen sheet pile device
Sheet pile is a hot rolled product made from steel with a high carbon content. The shape of the profile in cross section resembles a trough with edges equipped with locks - they allow you to fix the products together when installing vertical enclosing structures, for example, supporting walls.
The production control of Larsen sheet pile is regulated by GOST 4781-85 “Hot-rolled steel profiles for sheet piles. Specifications". There is no separate standard for the product, so manufacturers are guided by the developed specifications.
The document presents standard sizes sheet piling, the grade of steel used for the production of steel, the procedure for checking the quality and acceptance of products and other important parameters.
Varieties
The product is used in different areas of construction, so the technical characteristics, appearance the profile and grade of steel used differ from type to type.
Sheet pile Larsen L4
The profile is made of steel 16HG (ST3KP). Its characteristics:
- useful width of the product in the center of the lock - 405 mm,
- wall strength is 517-518 kN/m;
- thickness of inclined faces - 9.5 mm;
- allowable resistance 1 p.m. supporting wall - 2200 cm³/m;
- weight of Larsen L4 sheet pile - 74 kg/m;
- weight of 1 m² of construction - 182.7 kg.
Larsen sheet pile l4 is produced at 2 factories:
- Russian Mining and Metallurgical Company;
- "DMK" (Ukraine).
The product is widely distributed in Russia and the CIS countries, it can be bought from various suppliers in the primary and secondary markets.
Sheet pile Larsen L5
For the manufacture of this rolled steel, ST3KP steel is used. This is a more powerful profile than L4:
- useful profile width between locks - 420 mm;
- wall strength - 696…800 kN/m;
- allowable resistance 1 p.m. supporting wall - 2962 cm³/m;
- weight of Larsen L5 sheet pile - 100 kg/m;
- weight of 1 m² of construction - 238 kg.
Like L4, L5 sheet pile is produced by the Ukrainian DMK and the Russian Mining and Metallurgical Company. You can buy the product throughout Russia at reasonable prices from different suppliers and intermediaries. On sale you can find rolled VL607 - this is an analogue of L5 sheet pile from the Czech company Evraz.
Sheet pile Larsen L5-UM
This representative of rolled products of this type differs from its predecessor in the quality of the steel used for the production - it is resistant to corrosion, it contains copper.
- Useful profile width between locks - 543 mm;
- wall strength - 906 kN/m;
- thickness of the inclined edge - 11 mm;
- allowable resistance 1 p.m. supporting wall - 3555 cm³/m;
- weight of Larsen L5-UM sheet pile - 114 kg/m.
Other types
Larsen sheet piles differ not only technical specifications, but also the shape of the castle:
- S-profile;
- L-profile;
- Z-profile.
In all cases, the lock forms a tight connection between adjacent profiles.
For different purposes, beams made of non-metallic materials are used:
- plastic;
- reinforced concrete;
- tree.
Nevertheless, steel sheet piles are used most often and are in demand.
Application area
Larsen sheet piling is used in civil engineering and in the arrangement of hydraulic structures for various purposes:
- strengthening of foundation pits for the period of installation work;
- protection of pits from filling groundwater- the connection of the tongue is completely hermetic and retains its properties for several decades;
- strengthening the walls of tunnels, highways and roads local importance;
- fixing coastlines and protecting them from erosion;
- arrangement of dams, dams, locks, moorings, etc. and their repair;
- construction treatment facilities;
- strengthening soils prone to slipping.
The tongues, connected by locks, form a sealed and durable wall that can take significant loads. Products are immersed in the ground, leaving a fence of the required height above ground level. The arrangement of sheet pile walls is much more profitable than the installation of concrete and reinforced concrete structures, therefore, metal profiles are most often preferred in cases where it is necessary to restrain the pressure of water and soil.
Installation
The method of immersing the Larsen sheet pile depends on the length of the product and the characteristics of the soil. There are 3 methods of mounting profile piles:
- clogging;
- vibration immersion;
- indentation.
The sheet pile is inserted into the ground according to the design position, the next one is buried upside down by 180 ° relative to the previous one to enable the mounting lock to be closed, and so on.
hammering
This method is used outside urban areas, since the vibration transmitted to the ground has a destructive effect on the foundations of nearby buildings and structures.
Clogging is carried out by means of special equipment - copra. This machine is equipped percussion mechanism, the impact force of which on the pile being driven is regulated depending on a number of factors (sheet pile, soil parameters).
Larsen sheet piling is the fastest and cheapest method of deepening steel retaining walls.
vibration immersion
The second most popular method is vibration immersion. This method is used in cases where it is not possible or necessary to clog the elements of the supporting wall (in reservoirs, on coastlines, on soft soils saturated with water).
Vibration is provided by a mechanism that emits low frequency vibrations. It is hung on excavators, cranes and other equipment.
How the dive works:
- the sheet pile is attached to the vibration mechanism by means of slings;
- direct the rack to the design position;
- the installation presses on the pile, emitting vibration, which helps the steel product sink into the ground.
The method does not have a significant effect on the soil, however, its use within the boundaries of dense buildings is limited. In addition, the method has significant disadvantage- high cost compared to clogging.
indentation
The most expensive and the only sheet piling method approved for use in urban areas is indentation. The process is carried out by a special pile-pressing installation (SVU) on caterpillar tracks. The sheet pile is attached to the movable mechanism in a vertical position, the profile is immersed in the ground to a predetermined depth.
Dismantling
When supporting wall becomes unusable or the need for it disappears, it is dismantled. The extraction of the Larsen sheet pile is carried out using a vibrating unit. The use of a crane alone is inefficient - the friction forces in the soil are significant, and only short-amplitude oscillations can weaken them.
The sheet piling is fixed in a vibration unit suspended from a crane and the vibration generator is turned on, the pulling force is gradually increased.
As a rule, the cost of even used sheet piles exceeds the cost of their dismantling, so the work pays off well. For this reason, organizations that are engaged in the extraction of sheet piles themselves pay their customers the difference in prices, the latter automatically solve the issue of selling unnecessary profiles.
Sheet piles were designed to reinforce the walls of excavations during construction work. Such a fence reliably protects workers and equipment from soil collapses.
In the territory Russian Federation the method of static indentation of the tongue began to be used only in the late 90s of the 20th century. When erecting protective structures sheet piling in America and Europe most of built in this way.
Initially, the tongues were made of wood. hallmark grooved board was the presence of a spike and a groove on the sides of the board. They were intended for reliable connection of individual boards into a single shield.
With the development of building skills and the growth of the scale of construction, reinforced concrete piles replaced wooden sheet piles. Such a design can be not only a temporary fence, but also in the future carry a support load during the construction of a building.
The disadvantage of this type of sheet piles is their low resistance to difficult soils, which is why they often go to the side when they abut against a solid obstacle. Cracks also often appear, as reinforced concrete is very sensitive to bending.
The most economical option is the indentation of metal sheet piles.
Once the excavation work is completed and the piles are no longer needed, Larsen's metal sheet piles can be pulled out and used in the construction of other objects. This greatly reduces the cost of the method.
Methods for immersing a sheet pile into the ground
Main in modern construction there are 3 ways of plunging the sheet pile:
- Dive driving;
- Static push.
Dive driving
This method was also used to drive the first piles in the construction business. Its main advantage is its technological simplicity and availability of all necessary equipment.
The disadvantages include the need for powerful and energy-intensive installations. Also, during the operation of such equipment, loud noise and high ground impact.
Helpful advice
All vibration loads have a negative impact on the condition of neighboring buildings, creating cracks in the foundation and walls.
If the sheet pile hits some kind of obstacle during hammering, it can be deformed, and with it the fastening lock of the sheet pile.
Vibration immersion of sheet pile
Vibration pile driving more than economical option in terms of energy costs. Also, the level of generated noise and vibrations is noticeably lower than that of shock technology. This has a positive effect on the possibility of carrying out work near residential buildings and protected cultural sites.
But the very mechanism of immersion under the influence of vibration makes it impossible to use such equipment near subway tunnels or large pipelines and other highways.
Static tongue indentation
The most modern technology this is the static indentation of the Larsen tongue.
An excellent option when it is necessary to carry out work in a densely populated area of large cities or near architectural monuments.
This method will be especially relevant in areas with dilapidated buildings, landslide zones, where any impact can lead to an emergency.
Sheet piling of the pit in Sheremetyevo, made by the specialists of ArktikGidroStroy
Sheet piling in Moscow, made by the specialists of ArktikGidroStroy
Sheet piling of the pit made of Larsen sheet piling with spacers, made by the specialists of ArktikHydroStroy
Indentation of the tongue, performed by the specialists of "ArktikGidroStroy"
Vibration driving of the pipe and sheet piles during the construction of a temporary bridge, performed by the specialists of ArktikGidroStroy
Advantages of the static indentation method
The main advantages of using the indentation method when driving sheet piles are:
- Suitable for work near residential buildings and cultural facilities;
- The ability to carry out work near large pipelines and metro lines due to the complete absence of vibration and shock loads on the ground;
- High speed of erection of the barrier and economy of the construction budget;
- The draft of the entire barrier passes evenly, as well as the process of immersion in the ground;
- The use of modern special equipment allows you to control the dive online and make the necessary adjustments;
- This technology is friendly to the environment;
- Final load bearing capacity of all piles that were installed by the static indentation method are on average 10% higher than those of piles installed by the classical impact method.
Press-in tongue installation technology
With the static method of pressing a sheet pile, it is installed at the planned place of immersion, after which it is pressed into the ground by a hydraulic drive. Modern technology allows you to exert pressure from a ton to several tens of tons.
Due to the small cross-sectional area, a sheet pile cuts into the ground much easier than a classic reinforced concrete one.
Helpful advice
The plunging of the sheet pile by the indentation method avoids restrictions when working near residential buildings due to the complete absence of vibration and noise. This is especially true when carrying out work within the boundaries of large cities.
Watch the video on how the sheet piling is installed in our company:
Used machinery and equipment
The main force used during the push-in pile driving procedure is a constant static load. For such purposes, super-powerful construction equipment is used.
All pile-pressing machines are designed on the principle of lateral wedge capture of the sheet pile and its immersion in the well, which is prepared in advance.
Modern electronics helps to correct the plunging angle of the sheet piling in time and eventually get a perfectly even row of piles. It is also possible to create sheet piles of round and corner configuration.
Several types of equipment have received the greatest distribution in the market of services for pressing sheet piles:
- TITAN DTZ Hydraulic Piling Machine (HPL) Mainly used for building pile foundation under the building. The maximum force is 320 tf;
- When working in dense urban areas or the need to organize a large pile area, use the SUNWARD ZY J120 installation, which is completely silent, environmentally friendly and suitable for all types of piles;
- SVU-V-6 is completely independent and offline installation, capable of performing the entire list of work with sheet piles and moving to the desired installation site.
Types of sheet piling
On this moment The following types of sheet piling are on the market:
- Larsen sheet piling is the most popular type of sheet piling at the moment. Technologically, it is metallic profile various forms made of high quality metal. Larsen sheet piles are either trough-shaped or Z-shaped. Side walls have special roundings that act as locks for connecting individual tongues into a single structure. As a result, such sheet piles form a strong and monolithic wall, which reliably protects against collapses and other incidents;
- Standard metal tongue - used in cases where the static indentation of the Larsen tongue is too costly. After installation, iron sheet piles are removed from the ground and can be reused if not damaged during installation.
- Concrete sheet piles are more expensive than iron ones, but after construction they continue to perform a supporting function. Most often they are used in the construction of multi-storey buildings.
- Wooden - they are practically not used anymore, as they are not able to withstand high loads and cannot be reused.
Our advantages in sheet piling
Our experts are always ready to consult you free of charge on any issue of sheet piling, as well as orient you in the range of sheet piles.
We provide a service for the supply of used sheet piles and the extraction of already used Larsen sheet piles.
We have accumulated great experience for the implementation of a wide variety of objects of any complexity. Start time from the date of application is 48 hours.
A key feature of cooperation with our company is that we sell Larsen sheet piles with the possibility of repurchase. This procedure will help you return up to 80% of the original cost.
Loading...