Working principle of steel pipe pile
Steel piles work in conditions where soil is loosely packed beneath the building and may affect the stability of the building over a period of time. When using pipe piles, the weight is distributed evenly and deeper inside the earth where the soil is denser. It is useful for very large buildings where the soil cannot provide the required support.
On the other hand, where the land area is small and there is not enough space for a spread footer or foundation, a stressed building will be used to give the ground better stability.
Common forms of pipe piles
Widely available form of pile pipe: usually large diameter (heavy steel pipe), sizes from 16 inches to 60 inches, manufactured using seamless, longitudinal welding (LSAW) or spiral welding (SSAW). Depending on the soil environment, pipes may be galvanized (galvanized), FBE or 3PE. In this way moisture resistance and corrosion resistance are provided.
Open pipes will only be used if there is a standard support expectation. It can also be covered with steel plates or rock boots. This creates a closed pile, which the installer can fill with concrete and steel. Increases foundation stability and strength.
Pipe pile installation
To install pipe piles, we need a pile driver. Pile drivers are machines that drive deep into the ground. They use hydraulic systems capable of applying high levels of force to drive piles deep inside. When steel piles are driven directly into the soil rather than drilling holes, the soil itself provides the support needed to stabilize the pipe. As the pipe is lowered, the soil shifts, causing increased friction and pressure in all directions, holding the pipe firmly in place.
How to place piling pipes
Depending on the building's loads at different locations, engineers and installers can determine the location of pipes. When the load is very heavy (usually in industrial equipment), the pile tube must be placed directly beneath it to provide adequate support.
If the load of the building is evenly distributed, there may be a concrete pile cap used to support the building. This allows the piling tubes to be placed evenly and the pile cap serves as a single component connector for the entire foundation.
Select appropriate steel pipe piles for stacking
Pipe piles must be carefully selected based on the forces of the building, the prevailing conditions of the soil and the building codes of the area. The location of the piles is determined by the geotechnical engineer. The structural engineer then decides on the material of the pile and the size of the pipe pile based on the depth that must be achieved. If individual piling tubes do not reach depth, use splice sleeves or butt welds to join the piles to make them longer.
Open and closed end pipe piles
According to different soil environments and requirements, pipe piles can be divided into open-end pile pipes and closed-end pile pipes.
