What Is The Photovoltaic Bracket Foundation?

The photovoltaic bracket independent foundation refers to a foundation structure used in the photovoltaic power generation system to support the photovoltaic bracket and solar panels, and bear the weight of the photovoltaic bracket and solar panels as well as external loads such as wind and snow load. Therefore, it needs to have sufficient bearing capacity and stability to ensure the safe operation of the photovoltaic power generation system.

The foundation forms commonly used for photovoltaic brackets include reinforced concrete independent foundation, reinforced concrete strip foundation, spiral steel pile foundation, reinforced concrete pile column foundation, rock anchor foundation, etc.

What is the spiral steel pile foundation?

The spiral steel pile foundation, also known as the steel anchor, is an increasingly widely used photovoltaic bracket foundation form. It uses hot-dip galvanized steel pipe piles with spiral blades under the front and rear columns of the photovoltaic bracket. The spiral blades can be large or small, continuous or intermittent, and continuous welding is used between the spiral blades and the steel pipe piles. During the construction process, professional machinery can be used to rotate it into the soil.

The upper part of the spiral steel pile foundation is exposed to the ground and is connected to the upper bracket column by bolts. Its force mechanism is similar to that of common screws in daily life. It is screwed into the soil with supporting machinery. The side friction between the steel pipe pile side and the soil, especially the bite force between the spiral blade and the soil, resists the pull-out force and bears the vertical load. The pile-soil interaction between the pile body, spiral blade and soil body resists the horizontal load.

The advantages of spiral steel pile foundation are outstanding. Its construction speed is fast, the construction does not require site leveling, and there is no earthwork excavation. Various forms can be selected according to the geological conditions of the photovoltaic field. And it has very good environmental protection performance, can protect the vegetation in the field to the maximum extent, has little impact on the environment, and the field is easy to restore to its original appearance.

The spiral steel pile is convenient to adjust the upper bracket, and the bracket height can be adjusted according to the terrain. The galvanized layer on the surface of the pile body is corrosion-resistant, which can ensure that the spiral pile has considerable bearing capacity underground, so the spiral steel pile can be reused as needed.