Steel Grillages For Foundation Support And Utility Construction Projects

Steel Grillages For Foundation Support And Utility Construction Projects

Product Description

In the field of construction engineering and foundation treatment, the cross-shaped steel pile tip is designed as a special pile end component to optimize the penetration performance and bearing capacity of the pile foundation. The main body of the pile tip is made of four steel plates welded perpendicular to each other to form a cross shape, and the steel is mostly made of Q235B or higher strength grade, and the surface is hot-dip galvanized to improve corrosion resistance. Triangular stiffener plates are arranged at the joints of each steel sheet to effectively enhance the integrity of the structure and prevent the deformation of the pile tip in the process of penetration.

Specifications and parameters

Geological adaptation adjustment: For complex geology such as inclined rock surfaces, the "cutting edge" of the tip of the cross-shaped steel pile will be optimized, such as changing part of the flat bottom to the hypotenuse, and the size parameters (such as the height of the blade and the size associated with the inclination angle) are set to improve the ability to enter the rock and resist bias.

Industry / local standards: different regions (such as coastal and inland), engineering specifications, there are detailed requirements for the specifications of cross-shaped steel pile tips, and some refer to the "Technical Regulations for Prestressed Concrete Pipe Pile Foundation", etc., in the thickness of the steel plate, the size of the structural details, combined with the type of pipe pile (PHC, etc.) to make adaptation, to ensure the construction quality and pile performance.

To put it simply, the core of the specification is to match the size and geology of the pipe pile, which is defined by the length of the pile edge, the thickness of the steel plate, and the structural parameters of each part.

Product superiority

Cross-shaped pile tips are suitable for construction in harder geological formations such as hard soil and rock, because their hardness and firmness are higher, which can better resist the inherent resistance of the formation, and improve the ability to drill and stand against walls.

The core functions of cross-shaped steel pile tips are reflected in two aspects: soil penetration and load transfer. Its acute angle design can concentrate the penetration force of the pile body on the tip contact surface, and in the complex geology such as dense sand layer and pebble layer, the cross structure continues to cut the soil to form a guide channel. The measured data of a highway project in a coastal soft soil area show that the penetration efficiency of PHC pipe piles using such pile tips is increased by about 35% and the end resistance is increased by 28% compared with that of flat bottom pile tips. In the foundation treatment where the bearing layer is strongly weathered rock, the contact area between the pile tip and the rock mass is 2.3 times that of the traditional pile tip, which significantly improves the end bearing effect.

Application Fields of Products

Alternating strata of soft and hard soils: In areas with large changes in soil strata, the pile tip can adapt to the penetration needs of strata of different hardness.

Application of uplift pile: In some cases, the cross-shaped pile tip can increase the occlusion between the pile and the soil and improve the uplift performance.

Temporary support pile: When used for foundation pit support, the pile tip can ensure that the pile body is quickly driven into the design depth.