What are the different types of underground piles?

As a seasoned supplier in the underground pile industry, I've witnessed firsthand the diverse range of piles that play a crucial role in various construction projects. Underground piles are essential foundation elements that transfer the load of a structure to the underlying soil or rock layers, ensuring stability and safety. In this blog, I'll delve into the different types of underground piles, their characteristics, and applications.

Driven Piles

Driven piles are one of the most common types of underground piles. They are installed by driving them into the ground using a pile driver, which can be a hammer, vibratory device, or hydraulic press. Driven piles are typically made of steel, concrete, or timber.

Steel Piles: Steel piles are known for their high strength and durability. They can be used in a wide range of soil conditions, including soft clay, sand, and gravel. Steel piles are often used in high-rise buildings, bridges, and offshore structures. For high-rise building projects, you might be interested in our High Building Structure Pipe, which is specifically designed to meet the demanding requirements of tall structures.
Concrete Piles: Concrete piles are precast or cast-in-place. Precast concrete piles are manufactured in a factory and then transported to the construction site for installation. They are available in various shapes and sizes, including square, rectangular, and circular. Cast-in-place concrete piles are formed by pouring concrete into a hole drilled in the ground. Concrete piles are commonly used in building foundations, retaining walls, and marine structures.
Timber Piles: Timber piles are made of wood and are suitable for light to medium loads. They are often used in areas with relatively soft soil conditions, such as marshes and wetlands. Timber piles are environmentally friendly and can be easily installed. However, they are susceptible to decay and termite damage, so they require proper treatment and maintenance.

Bored Piles

Bored piles, also known as drilled shafts, are constructed by drilling a hole in the ground and then filling it with concrete. Bored piles are often used in areas where the soil conditions are difficult or where the use of driven piles is not feasible.

Auger Bored Piles: Auger bored piles are installed using an auger, which is a rotating drill bit with helical blades. The auger is used to drill a hole in the ground, and the soil is removed as the auger rotates. Once the hole is drilled to the desired depth, a reinforcement cage is placed in the hole, and concrete is poured to form the pile. Auger bored piles are suitable for a wide range of soil conditions, including cohesive soils and granular soils.
Rotary Bored Piles: Rotary bored piles are installed using a rotary drilling rig, which uses a large drill bit to cut through the soil. The drill bit is rotated by a motor, and the soil is removed by a slurry system. Once the hole is drilled to the desired depth, a reinforcement cage is placed in the hole, and concrete is poured to form the pile. Rotary bored piles are suitable for large-diameter piles and can be used in difficult soil conditions, such as rock and hard clay.

Screw Piles

Screw piles, also known as helical piles, are a type of foundation system that consists of a steel shaft with helical plates attached to it. Screw piles are installed by rotating them into the ground using a hydraulic torque motor. The helical plates act as anchors, providing resistance against uplift and lateral forces.

Offshore Structure Pipe High Building Structure Pipe

Single Helix Screw Piles: Single helix screw piles have one helical plate attached to the steel shaft. They are suitable for light to medium loads and are often used in residential and small commercial buildings.
Multi-Helix Screw Piles: Multi-helix screw piles have multiple helical plates attached to the steel shaft. They are suitable for heavy loads and are often used in large commercial buildings, bridges, and industrial structures. Screw piles are easy to install, require minimal excavation, and can be installed in a wide range of soil conditions.

Sheet Piles

Sheet piles are thin, interlocking steel or concrete sections that are driven into the ground to form a continuous wall. Sheet piles are often used for retaining walls, flood protection, and excavation support.

Steel Sheet Piles: Steel sheet piles are made of high-strength steel and are available in various shapes and sizes. They are commonly used in marine structures, such as docks and piers, as well as in land-based construction projects. Our Offshore Structure Pipe can be used in combination with steel sheet piles for offshore applications.
Concrete Sheet Piles: Concrete sheet piles are precast or cast-in-place. They are heavier than steel sheet piles and are often used in applications where a high degree of durability and resistance to corrosion is required.

Selection of Underground Piles

The selection of the appropriate type of underground pile depends on several factors, including the load requirements of the structure, the soil conditions at the construction site, the availability of equipment and materials, and the cost. It is important to consult with a geotechnical engineer or a foundation specialist to determine the most suitable type of pile for your project.

Load Requirements: The load requirements of the structure, including the dead load, live load, and wind load, will determine the size and capacity of the piles. Heavier structures will require larger and stronger piles.
Soil Conditions: The soil conditions at the construction site, such as the type of soil, its strength, and its compressibility, will affect the performance of the piles. Piles should be designed to transfer the load to the underlying soil or rock layers with sufficient bearing capacity.
Availability of Equipment and Materials: The availability of equipment and materials, such as pile drivers, drilling rigs, and concrete, will also influence the selection of piles. Some types of piles may require specialized equipment or materials that may not be readily available in all areas.
Cost: The cost of the piles, including the material cost, installation cost, and maintenance cost, is an important consideration. It is important to balance the cost with the performance and durability of the piles.

Conclusion

In conclusion, there are several different types of underground piles available, each with its own unique characteristics and applications. As an underground pile supplier, we offer a wide range of high-quality piles to meet the diverse needs of our customers. Whether you are building a high-rise building, a bridge, or a residential home, we can provide you with the right type of pile for your project.

If you are interested in learning more about our underground piles or would like to discuss your project requirements, please feel free to contact us. Our team of experts is ready to assist you in selecting the most suitable pile type for your project and ensuring its successful installation. We look forward to the opportunity to work with you and contribute to the success of your construction project.

References

Bowles, J. E. (1996). Foundation analysis and design (5th ed.). McGraw-Hill.
Coduto, D. P., Kitch, B. K., & Duncan, J. M. (2011). Geotechnical engineering: Principles and practices. Wiley.
Tomlinson, M. J., & Woodward, J. C. (2008). Pile design and construction practice (5th ed.). Spon Press.