Transmission Tower Foundation Steel Utility Grillages Base Connection

Transmission Tower Foundation Steel Utility Grillages Base Connection

Product description

Grillages serve as essential components for securely attaching helical piles to structure bases or tower legs. These versatile units can be custom-designed to accommodate a wide range of pile and structure configurations. For detailed information tailored to your specific project requirements, please contact our factory for expert assistance and bespoke solutions.

Specifications and parameters

Suitable for small pile diameters (e.g. 300 - 400mm or so):

There are corresponding standards for parameters such as pile edge length (or associated size), such as pile side length of 300mm, part of the cross-shaped steel pile tip structure size (mm): B (pile edge length) 300, B1 (related adaptation size) 270, H (height, etc.) 125 - 140, t1 (steel plate thickness, etc.) 12, t2 (associated thickness) 18, a (local size) 25, h (detail size) 10. 

The pile diameter of 400mm pipe pile is adapted, such as the corresponding parameters of the pile side length, the thickness of the steel plate, etc., different manufacturers or standards will fine-tune, and some cross pile tip sizes around the pile diameter to ensure that the end of the pipe pile is matched and the force is reasonable.

Suitable for medium pile diameter (about 500 - 600mm pipe pile): Taking the pile edge length of 500mm as an example, the construction size (mm) may be B 500, B1 470, H 125 - 150, t1 15, t2 18, A 30, h 12.

 When the pile diameter is 600mm, the size parameter increases with the pile diameter, and the thickness of the steel plate and the extension size of each part are also adjusted accordingly to ensure stable force transmission and penetration of the soil layer in the pile sinking.

Suitable for large pile diameter (700mm and above pipe pile): If the pile edge length is 700mm, the structural size (mm) may be B 700, B1 670, H 125 - 150, t1 18, t2 18, a 30, h 14, the thickness of the steel plate and other parameters are increased, the pile tip strength is enhanced, and the load and geological resistance of the large pile diameter construction are coped.

Product superiority

• Strong penetration: The cross-shaped structure with appropriate design (such as some edging, etc.) can effectively penetrate the sand layer, gravel layer and other hard soil layers, help the pile tip to reach the ideal bearing layer, and also have a good performance in dealing with complex geology.

• Dispersion pressure: Disperse the pressure of the pile to the surrounding soil layer, reduce the local pressure at the end of the pile, improve the bearing capacity of the pile, and transfer the load to the foundation more evenly.

•  Precise guidance: guide the pile body vertically and accurately into the predetermined position during construction, reduce the tilt and offset of the pile body, and ensure the positioning accuracy of the pile foundation.

• Protect the pile: disperse the impact and wear force in the pile sinking, reduce the risk of damage to the pile due to the hard soil layer, reduce the fatigue and cracking of the pipe pile, and prolong the service life of the pipe pile.

• Improve efficiency: reduce the resistance of pile sinking, reduce the energy consumption of piling, make the pipe pile easier to sink, shorten the construction period, and reduce the vibration impact on the surrounding environment (such as buildings and municipal facilities).

• Wide adaptability: It is suitable for a variety of geological conditions, such as the soil layer from soft to hard (there is a fully weathered/residual soil layer on the strong weathering bearing layer), and it can also be adjusted according to the needs (such as pointed bottom, zigzag cross type to adapt to different rock formations).

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.