1. Classification of steel sheet piles

Steel sheet piles can be divided into many types according to their shapes, production processes and uses.

Classification by shape:

U-shaped steel sheet piles: This is the most common type of steel sheet piles, which are widely used in various projects. Its cross-sectional shape is U-shaped, with good bite and waterproof properties.

Z-shaped steel sheet piles: The cross-sectional shape of Z-shaped steel sheet piles is Z-shaped, with stronger bending resistance, suitable for projects requiring higher bearing capacity.

W-shaped steel sheet piles: Less common, but also used in specific projects, its cross-sectional shape is W-shaped, providing a larger section modulus and bending stiffness.

Other shapes: such as L-shaped, S-shaped, AS-shaped, etc., these shapes of steel sheet piles are selected and applied according to specific engineering needs.

Classification by production process:

Cold-bent steel sheet piles: Thinner plates are used for continuous rolling forming in the cold-bending unit, with low production costs, but the cross-sectional size cannot be optimized, and the amount of steel used may increase. Common types include non-bite type and bite type (L type, S type, U type, Z type).

Hot-rolled steel sheet piles: formed by high-temperature rolling of steel rolling mills, with standardized dimensions, superior performance, reasonable cross-section and high quality. Common types of hot-rolled steel sheet piles include U-type, Z-type, AS type, H type, etc. Among them, the production, processing and installation processes of Z-type and AS-type steel sheet piles are relatively complicated, and they are mainly used in Europe and the United States; in China, U-type steel sheet piles are mainly used.

Classification by use:

Permanent structures: such as docks, unloading yards, embankment revetments, retaining walls, retaining walls, breakwaters, diversion embankments, docks, gates, etc.

Temporary structures: such as mountain closures, temporary bank expansion, flow interruption, bridge cofferdams, temporary ditch excavation retaining, water retaining, sand retaining, etc. for large-scale pipeline laying.

2. Application of steel sheet piles

Steel sheet piles are widely used in many fields due to their high strength, easy to drive into hard soil layers, good waterproof performance, and reusable.

Foundation engineering and construction engineering:

Support for earth excavation: During earth excavation, steel sheet piles can effectively support the soil, prevent the sliding of the soil and the collapse of the side walls, and ensure the safety of earth excavation.

Underground building support: For support of projects such as underground garages and underground tunnels, steel sheet piles can provide strong support to ensure the stability of underground space.

Retaining wall construction: The strength and rigidity of steel sheet piles make them an ideal material for retaining walls, which can effectively withstand the pressure of the soil and prevent the soil from sliding.

Slope protection construction: In slopes, elevated roads, railways, and other embankments and ditches, steel sheet piles can be used as slope protection structures to protect the slopes from erosion by natural forces.

River and lake embankment support:

Steel sheet piles can be used for the support of river and lake embankments, enhance the stability of the embankments, and prevent soil erosion and embankment collapse.

Bridge and tunnel foundation support:

Steel sheet piles can be used as support structures for bridge and tunnel foundations, providing strong support and stability to ensure the safe use of bridges and tunnels.

Marine engineering:

In marine engineering, such as docks and seawalls, steel sheet piles can be used as support and enclosure structures to protect marine engineering from erosion and scouring by waves and currents.

Disaster relief:

In flood relief, steel sheet piles can be used in emergency situations such as flood control, collapse prevention, and quicksand prevention to provide timely support and enclosure.

In summary, steel sheet piles play an irreplaceable role in engineering construction due to their diverse classification and wide range of applications.