Definition and Classification

Definition: Steel sheet pile is a type of steel with a locking mouth, and its cross-section includes straight plate, groove, and Z-shaped sections, with various sizes and interlocking forms. The common ones include Larson style, LaCrosse style, etc., while in China, U-shaped steel sheet piles are mainly used.

Classification: According to the different cross-sectional shapes, steel sheet piles can be divided into various types such as straight plate, groove, and Z-shaped. Among them, U-shaped steel sheet piles are widely used in China due to their rich specifications, symmetrical structural forms, and advantages for reuse.

Features and Advantages

Characteristic:

Finished product production, reusable: Steel sheet piles are finished products that can be reused multiple times, reducing construction costs.

Construction is simple, but there is noise during construction: Steel sheet pile construction is relatively simple, but there is a certain amount of noise generated during the construction process.

Small stiffness and large deformation: Steel sheet piles have relatively small stiffness and large deformation, but can be used in weak soil layers by combining with multiple supports.

Good waterproof performance: The locking design of the steel sheet pile makes it have good waterproof performance.

Advantage

High strength, easy to drive into hard soil layers: Steel sheet piles have high strength and can easily drive into various soil layers.

Widely used: Steel sheet piles can be used in various engineering fields such as docks, unloading yards, embankments, retaining walls, retaining walls, breakwaters, and diversion embankments.

Simple construction and shortened construction period: Steel sheet pile construction is simple and fast, which can significantly shorten the construction period.

Good durability and long service life: Steel sheet piles have good durability and a service life of over 50 years.

Low construction cost: Steel sheet piles have good interchangeability and can be reused multiple times, reducing construction costs.

Significant environmental protection effect: The construction of steel sheet piles reduces the amount of soil and concrete used, which is beneficial for protecting land resources.

Application Field

The application fields of steel sheet piles are very extensive, mainly including the following aspects:

Permanent structural buildings: such as docks, unloading yards, embankments, retaining walls, breakwaters, diversion embankments, shipyards, gates, etc.

Temporary structures: such as mountain sealing, temporary bank expansion, flow interruption, bridge and cofferdam construction, soil retention, water retention, and sand retention for large pipeline laying and temporary ditch excavation.

Flood control and emergency response: plays an important role in flood control, collapse prevention, quicksand prevention, and other flood control and emergency response work.

Construction Methods

The construction method of steel sheet piles mainly includes the following steps:

Preparation of steel sheet piles: Conduct material and appearance inspections on the steel sheet piles to ensure that they meet construction requirements.

Steel sheet pile installation: Hydraulic hammers and other methods are used to drive steel sheet piles into the soil layer, forming a continuous steel sheet pile wall.

Deviation correction: Monitor the slope of the steel sheet pile at any time during the installation process, and correct any deviations in a timely manner.

Pile pulling: After the construction is completed, the steel sheet pile is pulled out using vibration hammers and other methods, and the pile hole is backfilled.