In the installation of photovoltaic power generation system, the basic design form of the rooftop distributed power generation system is different from that of the ground power station.
1. The basic form of rooftop photovoltaics.
Flat roof concrete foundation support is the most commonly used installation form of flat roof power station, which can be divided into strip foundation, independent foundation and counterweight block foundation according to the form of foundation; The connection between the support column and the foundation can be connected by anchor bolts or directly embedded in the concrete foundation.
Free-standing columns on a concrete roof.
Strip foundation on a concrete roof.
The color steel plate roof is mostly installed in non-penetrating ways such as buckles, concealed buckles, and seams, and penetrating installation can be used under special circumstances.
Color steel tile roofing type.
Fixtures for color steel tile roofs.
Tile roof foundation form.
Hooks used on the roof of a tiled house.
Second, the basic form of ground-mounted photovoltaic power station.
There are various concrete foundation supports for ground power stations, and the corresponding installation method can be selected according to the geological conditions of the project.
The foundations of photovoltaic power plants include:
1) Pile foundation: prefabricated pile foundation and cast-in-place pile foundation, wherein prefabricated pile foundation is divided into concrete prefabricated pile foundation, prestressed concrete pile foundation, steel pile foundation; The steel pile foundation also comprises a spiral steel pile foundation and a hammered pile foundation.
a.Precast pile foundation BCast-in-place pile foundation.
a.Spiral steel pile foundation bHammered pile foundation.
2) Extended foundations: independent foundations and strip foundations.
a.Independent Foundation BStrip foundations.
3) Reinforcement bolt foundation: The anchor foundation used in the rock stratum must ensure that the bedrock is basically intact, and has a large volume, and can bear the anchorage and all the load of the support foundation. Anchor foundations should not be used for rocks where most of the structure is damaged and cracks are developed.
2.The base form applies a table of conditions.
Note: 1In the table, it is indicated that it is applicable; indicates that it can be adopted; indicates not applicable; - indicates that this item has no effect;
2.The pile foundation in the table refers to the micro short pile, and the other pile foundation should be selected according to the relevant provisions of the current industry standard "Technical Code for Building Pile Foundation" JGJ94;
3.For rock reinforcement bolt foundation, the integrity degree of rock should still be required to be relatively complete and complete, and is suitable for the field area where rock is directly exposed;
4.Cast-in-place construction technology should not be used in winter construction in cold and severe cold areas.