Classification of Prestressed Pipe Piles

Classification of Prestressed Pipe Piles:

  1. According to the concrete strength grade and wall thickness are divided into: prestressed concrete pipe pile (PC), prestressed high strength concrete pipe pile (PHC), the first sheet of thin-walled pipe pile (PTC).
  2. According to the prestressed, it is divided into post – tensioned prestressed pipe pile and pre – tensioned prestressed pipe pile.
  3. According to the method of piling is divided into: hammer prestressed pipe pile, hydrostatic prestressed pipe pile, pre-drilled prestressed pipe pile and so on.

What are the characteristics of PHC pipe pile engineering

PHC pipe pile construction of a high degree of mechanization, on-site clean, good construction environment. Will not occur on the site of the bored piles mud floor full of dirty situation. There will not be artificial digging pile pumping site everywhere pumping soil and mud soil and the underground operation of the insecurity, easy to civilized construction, safe production.

PHC pipe pile construction speed, high efficiency, short construction period.

Widely used in industrial and civil construction, bridges, port terminals, water conservancy projects, in the national construction plays an increasingly important role. PHC pipe pile in foreign countries also developed rapidly in Japan, Hong Kong and Macao and Southeast Asian countries are widely used.

ERW Pipe Pile – Piling Pipe

Pipe pile is commonly used in deep foundations and transfer the loads from building to stronger soil layers found deep underground. The loads are resisted through skin friction and point bearing.

Introductions:

Deep foundations are required when the shallow soils are not strong enough to support the loads from the structure. Pipe pile is commonly used in deep foundations and transfer the loads from building to stronger soil layers found deep underground. The loads are resisted through skin friction and point bearing. Pipe can be driven either open-ended or closed-ended, with points or plates. If driven with plates, the pipes can then be filled with concrete to add strength to the pile. Usually the money spent on plates, rebar, and concrete would be better spent on a larger, thicker pile. Pipe pile range in size from several inches to several feet in diameter and can be easily spliced to create piles hundreds of feet in length.

Applications:

  • Building construction, Offshore/Marine Construction, Bridge Construction alongside contractors, Performing pile driving
  • Water lines, Sewer lines, Penstock
  • Existing Buildings, Factory Buildings under pipework

(This article comes from Hunan Fushun Metal edit released)

What is Pipe Piling?

Pipe piling is a structural building material used to support and stabilize a building’s foundation. When the soil below a building is loosely packed, it may not offer enough strength to keep the building stable over time. A pipe piling can be used to distribute the weight of the building deeper into the earth, where the soil is often more tightly packed. Pipe piles are also used to support exceptionally large or heavy buildings, where even standard soil cannot offer adequate support. Finally, a pipe piling may be required when the land area is too small to accommodate spread footers or foundations, forcing buildings to dig deeper to achieve sufficient ground stability.

Most forms of pipe piling consist of heavy-duty steel pipes, which are often galvanized with zinc to increase moisture and corrosion-resistance. When only a standard level of support is required, an open-ended pipe is often used. If additional support is required, these pipes may be capped with steel plates to form close-ended pilings. Installers can then fill the pipe with concrete and rebar to add extra strength and stability.

Piles are driven into the ground using large machines known as pile drivers. These machines contain hydraulic systems which exert extremely high levels of force to drive the piles into the ground. By driving the piles directly into the soil without drilling holes first, the soil itself helps to support and stabilize the piles. As the pile is driven underground, the soil is displaced, which increases friction and pressure around the pile to hold it in place.

Engineers and installers determine the placement for each pipe pile based on the building loads at various locations. A very heavy load, such as a piece of industrial equipment, may need to sit directly over a pile to ensure adequate support. When building loads are evenly distributed, installers may use a concrete pile cap to support the building. This allows the pipe pilings to be equally spaced below the building, then connected together with the pile cap to act as a large foundation system.

Each pipe piling must be carefully chosen based on building forces, soil conditions and local building codes. A geotechnical engineer can test the soil to determine whether piles are needed. The structural engineer then determines the size and material needed for each pipe piling, as well as the required depth. When a single pipe is not long enough to reach this depth, piles may be joined together using butt welds or splicing sleeves.

(This article comes from wiseGEEK editor released)