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
Helical piles, which are sometimes referred to as helical piers, helical anchors, and posts, are a screw-in pile used to build deep foundation systems and ground anchoring systems. A helical pile consists of a central shaft (circular or square) and a helix plate(s). The shaft can come in either a circular or a square cross section shape and is typically hollow.The helix plates which are press-formed with a predetermined pitch to resemble a screw are welded to the shaft. They are fabricated in various sizes and configurations to meet different types of loading and logistical requirements. The size and configuration of a helical pile is based on the design load the pile will carry, the existing soil conditions, the corrosiveness of the existing soils and the service life of the structure.
A helical piers is like a big screw with a shaft and bearing plates. Soil conditions and loads determine the necessary depth of the pier and diameter of the helixes, or bearing plates. Helixes are only found on the lead section of the pier, and extensions are added when needed to drive the pier deeper. Bearing capacity can be verified by the amount of torque required to drive the pier during installation. At the top of the pier is a cap to which various heads can be attached. Usually welded to the cap or somewhere along the shaft, the head may be a bracket that can be bolted to a foundation, like the ones shown here, or it could be a base for a deck post, for example.
Performance Advantages
1. Easy construction: No need for ground leveling, waste soil treatment or excavation. It can be directly rotated and screwed into the ground. The construction period is short and it is less affected by the environment.
2. Good environmental performance: During the construction process, it does not damage the soil structure, reduces construction waste, and has low construction noise and vibration.
3. Low cost: Compared with traditional concrete foundations, the material and labor costs of spiral ground piles can be saved by two-thirds.
4. All-weather construction: It can be constructed under most climatic conditions, such as rain, snow, freezing and other weather conditions.
5. Removable and recyclable: After use, it can be reversed and pulled out to restore the site and reduce the impact on the environment.
6. High load-bearing capacity: Strong uplift resistance and insertion grip, which can effectively disperse pressure and reduce the risk of settlement.
7. Wide range of application: It is suitable for various geological conditions, such as silty clay, silt clay, silt soil, medium and fine sand, etc.
Typical application scenarios
New energy: Photovoltaic support foundation (to avoid damaging farmland), temporary foundation for wind power generation.
Building reinforcement: Foundation strengthening when elevators are added to existing buildings and basements are expanded.
Municipal engineering: Rapid installation of street lamps, traffic signs and sound barriers.
Emergency disaster relief: Rapid construction of the foundations for temporary Bridges and prefabricated houses.
Comparison with other foundation forms
| Types | Spiral ground piles | Concrete cast-in-place piles | Prefabricated piles |
| Construction speed | Extremely fast(Completed on the same day) | Snow(It requires 28 days of curing) | Medium(Pile driving equipment is needeed) |
| Environmental impact | Extremely small(No mud pollution) | Big(Excavation,a large amount of waste) | Medium(The noise and vibration are large) |
| Cost | Low cost(Labor and equipment savings) | Relatively high(Long materials and construction period) | Medium |
| Geological limitations | Avoid rock layers and huge rocks | Almost unlimited | Hard soil layers are difficult to penetrate |
Types Of Spiral Ground Piles
The type of spiral pile is rich, and here are some common categories:
One.Classification by leaf layout
1.Single blade spiral pile: only a spiral blade shaped like a large screw. This kind of land pile is convenient when it is transferred to the soil, and the construction speed is fast. It is suitable for some small projects and temporary facilities, such as small photovoltaic support and simple tent, etc.
2.Double blade spiral pile: there are two spiral blades, and there is a certain spacing between the two blades. The double blade design increases the contact area with the soil, and the bearing capacity and the resistance of the bearing capacity and drawing resistance are improved compared with that of the single-blade sheet spiral pile, which is often used for the foundation support of photovoltaic power station, small wind turbine and other equipment.
3.Multi-blade spiral pile: helical blade with three or more helical blades with relatively small spacing. Multi-blade spiral pile can provide greater bearing capacity and stability, and can meet the application requirements of heavier duty, such as the foundation support of large photovoltaic power station and communication tower, which is widely used in some situations with complex geological conditions and higher bearing capacity requirements.
4.Continuous blade type spiral ground pile: the blade is continuously wound on the central steel shaft to form a spiral rising continuous structure. The large contact area between the blade of this land pile and the soil mass can provide strong lateral friction resistance and tensile force, which is suitable for various complex geological conditions, especially in the soft land area and the engineering that requires higher bearing capacity, such as large outdoor billboards and auxiliary support of Bridges, etc.
Two.Classification by connection
1.Flanged screw pile: top with a flange and connected to the superstructure through a flange. Flange connection has the advantages of high strength, good stability, convenient installation and disassembly, can adapt to certain displacement and deformation, can withstand large load, widely used in light photovoltaic power station, fruit and vegetable shed, wooden house villa and other infrastructure scenes.
2.Nut connection screw pile: connected to upper parts by nuts and bolts. Its structure is simple, the production process is relatively simple, the cost is low, and the upper and lower adjustment is convenient, the upper and lower adjustment range is wide, is often used in the light photovoltaic power station, fence fence, billboard traffic and other infrastructure construction.
3.U-type connected screw pile: u-shaped disk special design structure, can be quickly, tightly and firmly connected with wood column materials. In the early stage, the design and production is standardized and standardized, which can improve the efficiency and quality of construction and installation, and is used in wooden structure such as wooden villas, wooden plank roads and advertising signs.
Three.Use classification
1.Photovoltaic bracket spiral ground pile: specially designed for photovoltaic bracket, used to support solar panels. Its specifications and bearing capacity are customized according to the weight, size and installation mode of photovoltaic battery components, and have good corrosion resistance and long service life, so as to meet different environmental conditions and long-term use needs of outdoor use, and ensure the stability and reliability of photovoltaic bracket system.
2.Spiral ground pile of wind turbine: used for the foundation of wind turbine, it needs to bear large wind load and equipment weight. Generally, it has large size and high strength. Considering the special stress of wind turbine, the design of spiral ground pile will also be optimized accordingly, such as increasing the diameter and quantity of blades and increasing the stiffness of pile body, so as to meet the stable operation requirements of wind turbine under various working conditions.
3.Temporary facilities spiral ground pile: support of temporary facilities used for construction sites, tents of campsites, tents of music festivals and other temporary facilities. This kind of spiral pile pays attention to the convenience of installation and disassembly, the general size is relatively small, easy to carry and transport, can be quickly fixed to the ground, provides a solid foundation for temporary facilities, and can be easily pulled out and reused after use.
4.Spiral ground pile of traffic facilities: as the supporting foundation of guardrail and sign in traffic facilities such as roads and railways, it is necessary to have good impact resistance and durability to withstand the collision of vehicles and long-term outdoor environment erosion, and ensure traffic safety.
5.Landscape spiral pile: used for the support of outdoor seats, lampposts, flower frames and other landscape facilities in garden landscape design, in addition to satisfying the basic bearing function, it will also coordinate with the surrounding landscape in exterior design, play a certain decorative role, and add beauty to the garden landscape.
Four.Material classification
1.Carbon steel spiral pile: relatively low cost, good mechanical performance, can be used to improve its corrosion resistance by hot dip galvanizing and other surface treatment methods, is one of the widely used spiral ground pile materials, in photovoltaic support foundation, temporary facilities construction and other aspects.
2.Stainless steel spiral pile: it has excellent corrosion resistance and corrosion resistance, can be used in harsh environmental conditions for a long time, such as Marine environment, chemical plant area and other corrosive sites, but its price is relatively high, generally used for corrosion resistance engineering.
3.Aluminum alloy spiral pile: light weight, high strength, good corrosion resistance, and good processing performance and decoration effect. In some places with high aesthetic requirements, such as garden landscape facilities and outdoor facilities of high-end residential, aluminum alloy spiral pile has become a good choice, but its cost is also high.
Five.According to pile structure classification
1.Solid spiral pile: pile is solid structure, with high strength and stiffness, can withstand large load, suitable for engineering with high bearing capacity requirements, but relatively large weight, transport and construction may require more mechanical assistance.
2.Hollow screw pile: pile body is a hollow structure, on the premise of ensuring certain strength and stiffness, can reduce their own weight, facilitate transportation and construction, and at the same time can meet the bearing capacity requirements of general engineering, is a common spiral pile form.
Product Parameters
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. |
| Environmental adaptability parameters | |
| Parameters | Description |
| Corrosion resistanceseismic performance | The galvanized layer (≥80μm) or epoxy coating can have a service life of up to 50 years. |
| applicable temperature | The temperature range is + -40℃ to 60℃ (special steel can adapt to extremely cold or high temperatures). |
| seismic performance | The steel has good flexibility and is suitable for the spiral design in earthquake-prone areas to reduce the impact of frozen soil. |
| frost heave resistance | It is applicable to northern regions |
| Common model examples(references) | ||||
| Model | Shaft Diameter(mm) | Blade Diameter(mm) | Single pile bearing capacity(kN) | Applicable scenarios |
| HZ-76 | 76 | 200 | 50-100 | Photovoltaic brackets, fences. |
| HZ-114 | 114 | 300 | 100-200 | Lightweight buildings, billboards. |
| HZ-168 | 168 | 450 | 200-400 | House foundation, wind power foundation. |
| HZ-219 | 219 | 600 | 400-800 | Heavy construction, bridge reinforcement. |
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.