Specifications of Photovoltaic Support Steel Pipe Screw Pile

Can photovoltaic support steel pipe screw piles survive frost jacking?

To study the frost jacking performance of photovoltaic support steel pipe screw pile foundations in seasonally frozen soil areas at high latitudes and low altitudes and prevent excessive frost jacking displacement, this study determines the best geometric parameters of screw piles through in situ tests and simulation methods.

What are steel pipe screw piles?

Among them, steel pipe screw piles are widely used in photovoltaic support foundation projects in various countries and Western China ( Zarrabi and Eslami, 2016, Chen et al., 2018) because they have simple and fast construction, less noise and vibration and can be reused ( Livneh and El Naggar, 2008, Aydin et al., 2011, Mohajerani et al., 2016 ).

What are the different types of photovoltaic support foundations?

The common forms of photovoltaic support foundations include concrete independent foundations, concrete strip foundations, concrete cast-in-place piles, prestressed high-strength concrete (PHC piles), steel piles and steel pipe screw piles. The first three are cast-in situ piles, and the last three are precast piles.

What is the difference between steel pipe screw pile and PHC pile?

Compared with the PHC pile, the difference in the steel pipe screw pile is that its shaft is thin, the pile-soil friction is small, and the bearing capacity is mainly borne by helical plates.

What is screw piling?

Screw piling involves driving piles with helical screws into the ground, similar to turning a screw into wood. This method provides excellent load-bearing capacity and is particularly suitable for soils with varying densities.

What is the asphalt coating thickness for steel pipe screw piles?

The asphalt coating with a thickness above 15 mm can basically eliminate the impact of frost heaving soil on the foundation and superstructure. These results can provide a reference for improving the economy and applicability of steel pipe screw piles in similar projects. Fig. 21.