What is reinforced concrete strip foundation?
A reinforced concrete strip foundation refers to a foundation beam set between the front and rear columns of a photovoltaic (PV) support structure. This shifts the foundation's center of gravity between the columns, increasing the overturning resistance arm. As a result, the foundation's self-weight alone can resist the overturning moment caused by wind loads. Additionally, due to the larger contact area between the strip foundation and the subsoil, it enhances stability.
Reinforced concrete strip foundations can be used in areas where the bearing capacity of the surface soil is low. They are suitable for relatively flat sites with low groundwater levels. Since cast-in-place reinforced concrete strip foundations can achieve sufficient resistance to horizontal loads through a larger foundation base area, they do not require significant embedding depth—typically, a depth of 200–300 mm is sufficient. This greatly reduces the amount of excavation work required.
This type of foundation provides better load-bearing capacity, does not require specialized construction equipment, and features a simple construction process.