Qingdao KXD Steel Structure Co., Ltd
Qingdao KXD Steel Structure Co., Ltd
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| Steel Type | Q355/Q255 | Surface Treatment | Hot DIP Galvanizing with an Average of Over 80 μm |
| Transport Package | Pallet and Carton | Usage | Construction Engineering,Fixed Orchards And Greenhouses,Billboards And Street Lamp Foundations |
| Certification | API, ISO, CB, CE, SGS, BV | HS Code | 730110 |
| Pipe Diameter | Customizable(48~219mm) | Trademark | KXD STEEL STRUCTURE |
| Plate Diameter | Customizable(150~600mm) | Production Capacity | 50000 PCS/Month |
| Pile Length | Optional(1m~6m) | Origin | Qingdao,China |
| Shaft Wall Thickness | 3mm~12mm | Blade Thickness | 6mm~16mm |
| Helix Number | 1~4 Blades | Connecting | Flange Plate,Sleeve,Welding |
Product Description
A spiral pile is a new type of foundation component that resembles a screw. It is mainly composed of three parts: the spiral blade, the pile shaft, and the connection head. It is usually made of high-strength steel and is inserted into the ground using a special mechanical device, similar to screwing a screw. The bite force and friction between the spiral blade and the soil enable the pile to be firmly anchored in the soil layer, providing reliable support for the upper structure. Its installation process does not require large-scale excavation or concrete pouring, and it belongs to a prefabricated foundation form, significantly simplifying the foundation construction process.
Performance Advantages
As an efficient and environmentally friendly foundation treatment technology, spiral pile is a significant advantage over traditional pile foundation (such as concrete cast-in-place pile, driving pile, etc.), which mainly includes the following aspects:
1.The construction speed is fast, the efficiency is high :
Without excavation or maintenance : directly into the ground, immediately after installation can be carried, which saves the waiting time of concrete pouring and curing.
Mechanized operation : hydraulic drive or small mechanical installation, single pile construction only takes minutes to dozens of minutes, 3-5 times faster than traditional pile foundation.
It is suitable for emergency projects : scenes that require rapid construction such as post-disaster reconstruction and temporary facilities construction.
2.Low cost, good economy
Saving material : no need for concrete, steel cage and other materials, reduce the material cost.
Reduce the cost of labor and machinery : construction equipment is light, manual demand is small, especially suitable for remote or inconvenient areas. - the
Comprehensive cost is low : compared with traditional pile foundation, the total cost can be saved by 20% to 40%.
3.Environmental protection, pollution-free, strong adaptability
Low noise, low vibration : applicable to cities, residential areas or sensitive environments (such as hospitals and schools).
No mud pollution : unlike bored cast-in-place piles, mud waste will be generated, which meets the requirements of green construction.
Adapted to complex geology : can be used in soft soil, permafrost, high water level and even rock layers (with special design).
4.Removable and reusable
Ideal choice for temporary stage, exhibition hall, photovoltaic power station, etc., can be removed and reused after completion.
Reduce construction waste : in line with the concept of sustainable development and reduce the disposal cost of engineering waste.
5. Accurate control, reliable quality
Torque - bearing capacity correlation : real-time estimation of bearing capacity by rotating torque can be made to ensure the construction quality.
It can adjust the depth of : when encountering hard soil or obstacles, the pile length or position can be flexibly adjusted to avoid waste.
It is suitable for inclined load : enhance the resistance to drawing and lateral force through multi-blade design or tilt installation.
6. Adapt to harsh environment
Anti-freezing and thawing : excellent performance in the permafrost area and will not cause damage to the pile body due to frost expansion.
Good seismic performance : steel spiral pile has good flexibility and can adapt to dynamic loads such as earthquakes.
Applications
1. Solar photovoltaic power stations
Spiral piles are widely used as the foundation for the supports of solar photovoltaic power stations. They can withstand the weight of the solar panels and wind loads. Their construction is fast, environmentally friendly, and highly adaptable, making them particularly suitable for use in complex terrains and under various climatic conditions.
2. Wind Power Generation
During the installation of wind turbines, spiral piles serve as the foundation support for the wind generators, capable of withstanding strong winds and the weight of large turbines, ensuring the stable operation of the wind power equipment.
3. Temporary Facilities
Spiral ground anchors are widely used for supporting temporary facilities such as tents and pavilions at construction sites, campsites, and music festivals. Their ease of installation and removal makes them an ideal solution for temporary foundations.
4. Transportation Facilities
In the construction of transportation facilities such as roads and railways, spiral piles are used as the supporting foundation for traffic facilities like guardrails and signs, ensuring traffic safety.
5. Garden Landscape
In the design of garden landscapes, spiral posts are used to support outdoor seating, lamp posts, flower racks and other landscape facilities, which are both stable and aesthetically pleasing.
6. Foundation of Buildings
Spiral piles can be used as the foundation for modular buildings, log cabins, and other small structures. Their construction is fast, costs less, and is environmentally friendly, making them particularly suitable for use in complex terrains and temporary buildings.
7. Other fields
Spiral piles can also be applied to riverbank reinforcement, bridge foundations, slope support and renovation projects. Their advantages in special geological conditions are particularly prominent.
Product Parameters
Spiral ground piles are a modern foundation treatment technology that is efficient, economical and environmentally friendly. They provide stable bearing capacity through the mechanical combination of steel spiral structures and soil. Its modular design and rapid construction characteristics give it irreplaceable advantages in new energy, building reinforcement and temporary engineering, and it is an important supplement and development direction of traditional pile foundation technology.
The parameter selection of spiral ground piles should be combined with engineering requirements, geological conditions and budget, and the shaft diameter, blade size and material should be reasonably matched. Its modular design gives it obvious advantages in terms of load-bearing capacity, construction efficiency and environmental protection, and it is suitable for a variety of scenarios ranging from temporary facilities to permanent buildings.
| Basic Structural Parameters | ||
| Parameter Item | Common Specifications | Remarks |
| Material | Q235/Q355 Carbon Steel,Galvanized Steel,Stainless Steel | Carbon steel is mostly used in general engineering, while galvanized or stainless steel is used in corrosive environments |
| Central Axis Diameter | 48mm-219mm | The larger the shaft diameter is, the stronger the bending and compressive resistance will be. |
| Shaft Wall Thickness | 3mm-12mm | The larger the shaft diameter is, the stronger the bending and compressive resistance will be |
| Helix Number | 1-4 Blades | Multi-blade is suitable for high load-bearing capacity or uplift resistance requirements |
| Blade Diameter | 150mm-600mm | The larger the blade, the higher the load-bearing capacity |
| Blade Thickness | 6mm-16mm | Thick leaves are suitable for hard soil layers or rock geology |
| The Pile length(A Single Section) | 1m-6mm(Segmented Connection Available) | It can be connected in multiple sections and the maximum depth can reach 30 meters |
| Connecting Method | Flange Plate,Sleeve,Welding | The flange plate is easy to disassemble and the welding is more stable |
| Mechanical Performance Parameters | ||
| Parameters | Typical Range | Description |
| Compressive bearing capacity | 5kN-500kN | It depends on the leaf size, burial depth and soil quality. |
| Uplift bearing capacity | 3kN-300kN | The multi-blade design can enhance the uplift resistance. |
| Lateral force resistance | 2kN-100kN | It can be strengthened by oblique driving or increasing the pile diameter. |
| Installation torque | 1kN·m-50kN·m | Torque is positively correlated with bearing capacity (empirical formula: bearing capacity ≈ torque *10) |
| Construction Parameter | ||
| Parameters | Typical data | Description |
| Installation equipment | Small excavator (with hydraulic head), handheld spiral pile driver. | The equipment is lightweight and suitable for narrow places. |
| Installation Speed | 30 minutes per piece. | It is 3 to 5 times faster than traditional pile foundations. |
| Applicable soil types | Clay, sandy soil, silt, frozen soil, backfill soil. | Hard rock layers require special blade designs. |
| Maximum installation depth | It can reach over 30 meters. | Multi-section connection, with flexible depth adjustment. |
The processing method and manufacturing process of helical piles
Material selection
Raw materials: Q235 welded pipes are usually selected as the main raw materials for the production of spiral ground piles, which have excellent welding performance and mechanical properties.
Processing steps
1. Cutting: According to the design requirements, the raw materials are cut to the required length. During the cutting process, it is necessary to ensure that the cut is smooth to facilitate the subsequent deformation and welding processes.
2. Deformation: The cut pipes are subjected to a reduction process to achieve the designed outer diameter, preparing for the subsequent welding process.
3. Welding: The spiral blades, connecting flange plates, and other components are welded onto the pipe body. This is one of the key processes in the production of spiral ground piles. The welding quality directly affects the strength and service life of the ground piles. It is necessary to strictly control the welding process parameters, such as welding current, voltage, and speed, to ensure that the welds are full and free from defects such as false welding, missed welding, and sand holes.
4. Pickling: The welded ground piles are placed in a pickling tank, where they are treated with acid to remove rust, oxide scale, and other impurities from the surface, providing a good surface condition for hot-dip galvanizing. The pickling time and acid concentration must be strictly controlled to avoid excessive corrosion or incomplete cleaning.
5. Hot-dip Galvanizing: The pickled ground piles are immersed in molten zinc to form a uniform zinc coating on the surface, enhancing the corrosion resistance of the ground piles. During hot-dip galvanizing, the temperature of the zinc bath and the immersion time must be strictly controlled to ensure that the zinc coating thickness and adhesion meet the standard requirements.
Follow-up processing
After the above main process steps, some subsequent treatments are still needed for the helical ground piles, such as cleaning, drying, surface inspection, etc., to ensure that the product quality meets the factory requirements. Finally, the qualified helical ground piles are packaged and stored in the warehouse for transportation and sale.
Working Principle
Installation method: By rotating and pressing down through a hydraulic or mechanical torque motor, the helical blades drill into the soil layer like "screws", generating almost no vibration during the process.
Bearing capacity: Relying on the frictional force between the blade and the soil layer and the end bearing force, the depth is adjustable to avoid weak layers and reach stable strata directly.
Spiral ground piles are a type of foundation building material, featuring convenient construction, environmental friendliness, and recyclability. The following is their working principle and usage method:
Working Principle
Frictional Force: When the helical pile is screwed into the ground by specialized equipment, its helical blades come into contact with the soil and generate frictional force. This frictional force can fix the pile in the soil, thereby providing stable support.
Soil Shear Resistance: As the helical pile is screwed into the soil, shear resistance is generated between the blades and soil particles, which further enhances the stability of the pile.
Lateral Frictional Resistance: During the rotation of the helical pile, its blades gradually penetrate and compact the surrounding soil, thereby increasing lateral frictional resistance and improving the overall load-bearing capacity.
Pull-out Resistance: The top bolt plate of the helical pile can withstand pressure or load from above, while the helical blades resist upward pull through friction with the soil, ensuring that the pile is not pulled out.
Usage Method
Preparatory work: This includes geological survey, material preparation, construction equipment preparation, and site clearance, etc. It is necessary to understand the geological conditions, soil properties, and groundwater level, etc., prepare the required helical ground piles and related accessories, and ensure that the construction equipment is in good condition.
Installation of equipment: Connect the output shaft of the helical ground pile machine with the square socket of the helical ground pile to ensure that the pile remains vertical to the ground.
Insertion of the pile: Start the equipment to insert the pile into the ground. During the construction process, maintain a uniform rotation speed to avoid damaging the pile body.
Installation of the pile head: When the pile reaches the set depth, stop the equipment and lock the mechanical arm. Remove the helical pile head and replace it with a straight pile head of the required length, and insert it into the top of the helical pile to ensure a tight connection between the pile head and the pile body.
Application of pressure: Apply pressure through the helical pile machine to smoothly insert the helical ground pile into the ground until it reaches the designed depth and bearing capacity.
Post-construction treatment: After the installation is completed, conduct quality checks to ensure that the verticality and levelness of the ground piles meet the requirements, and also check whether all connection parts are firm and reliable.
Company Profile
Qingdao KXD Steel Structure Co.,Ltd is one subsidiary for XINGUANGZHENG Group focusing on structural steel building construction related business, engineering,supply, fabrication, delivery and installation for whole buildings construction, meanwhile, we also do steel foundation accessories fabrication, foundation anchor, ground screws,helical pile.
Our Advantages
✅ Quality product: Made of high strength steel (Q235B/Q355B), with anti-corrosion galvanized or epoxy coating to ensure durability and corrosion resistance, suitable for various complex geological conditions.
✅ Customized services: We offer a variety of specifications (shaft diameter 48mm - 219mm, blade diameter 150mm - 600mm), and support customization according to engineering requirements to meet different bearing capacity requirements.
✅ Fast delivery: Factory direct supply, sufficient inventory, shortened procurement cycle, guaranteed project progress.
✅ Technical support: Professional team provides selection guidance, construction plan optimization and on-site installation support to ensure project quality.
✅ Cost advantage: helps customers save 20% to 40% of the combined cost compared with traditional pile foundation and improve project efficiency.
If you are interested in our products,please feel free to contact with us,we are glad to serve you.