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The 6 Foundation Types Used In Pv Structure
Mar 26, 2018


Reasonable form of photovoltaic stents can improve the system ability to resist wind KangXue load, reasonable use of pv stent system in the aspect of bearing characteristics, can do further for its size parameters optimization, material saving, contribute to pv system to further reduce the cost.

The load on the base of the photovoltaic module is mainly: bracket and photovoltaic module self-weight (constant load), wind load, snow load, temperature load and earthquake load.Which is controlled by the main control wind load, so the foundation design should guarantee the stability of foundation under wind load, under the wind load, likely to pull up, fracture damage phenomenon, such as foundation design should be able to guarantee that don't appear under the force.

Here's a look at the types of ground photovoltaic support base and planar roof photovoltaic support base and what are their characteristics.


Ground photovoltaic support base.

1. Foundation of bored cast-in-place pile. 

It is convenient to make holes, which can be adjusted according to the topography, the top elevation is easy to control, the amount of concrete reinforcement is small, the excavation is small, the construction is fast, and the original vegetation damage is small.However, there are concrete holes and castings, suitable for general filling, cohesive soil, silty soil, sand and so on.

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2.Steel screw foundation

Hole is convenient, can adjust the top surface elevation, according to the topography is not affected by groundwater, under the condition of winter construction as usual, fast construction, elevation of flexible adjustment, damage to the natural environment is very small, there is no fill in excavation engineering, and little damage to the original vegetation, don't need to be flat.Suitable for desert, grassland, beach, next door, frozen soil, etc.But the steel is large, and is not suitable for strong corrosive foundation and rock foundation.

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3. Independent foundation

The capacity of water resistance is the strongest, the anti - flood anti - wind.The maximum amount of reinforced concrete is required, and the construction period is long and the environment is destructive.Photovoltaic projects are rarely used.


4.Reinforced concrete strip foundation.

This kind of basic form is applied to the poor foundation bearing capacity, which is suitable for the relatively flat site, low groundwater level, and the high level single axis tracking pv support for uneven settlement.


5.Prefabricated pile foundation

Is about 300 mm in diameter prestressed concrete pipe pile or cross section size is about 200 * 200 square piles into soil, bolts or reserved at the top of the steel plate and the upper column connection, before and after stent depth is less than 3 meters, the construction is simple and fast


6.Foundation of bored cast-in-place pile.

Cost is low, the demand is higher, but the soil is suitable for a certain compactness of silt clay or plastic, hard plastic powder, does not apply to loose sandy soil, soil relatively hard pebbles or problems may not easily into a hole.


CY Solar is a manufacturer specializing in ground and roof mounted structure, the above foundation of mounting stuctures are all can be customized in cy solar.