In high wind speed areas, the angle of diagonal bracing of PV mounts needs to be determined comprehensively according to specific design requirements, geographic conditions and wind loads. The following points can be used as reference:

Design Codes and Standards

According to the Quality Assessment Standard for Installation of Modules and Brackets for Photovoltaic Power Generation Projects (NB/T 10320-2019), the design of PV brackets needs to meet the requirements of strength, stiffness and stability, and needs to be mechanically analyzed through the combination of loads. The angle of diagonal bracing should be strictly controlled according to the design drawings to ensure the stability and safety of the structure.

Determination of angle of inclined brace

The angle of diagonal bracing is usually determined by external forces such as wind loads and snow loads. For example, in some projects, the fixed inclination angles of PV struts are 13°, 18° or 26°, which are designed to balance structural stability and economy. In addition, the selection of the inclined brace angle needs to take into account factors such as the slope of the terrain, the way the modules are arranged, and the wind direction. For example, in mountainous or sloping areas, the tilt angle of the bracket may need to be adjusted to accommodate changes in terrain.

Angle of diagonal bracing in real cases

In some fixed PV mounting projects, the inclined brace angle is usually set between 15° and 30° to enhance the wind resistance of the mount.

In special terrain conditions, such as high altitude or mountainous environments, the fixed inclination angle of the bracket may reach 26° or even higher to adapt to harsh weather conditions.

For adjustable brackets, the inclination angle can be adjusted steplessly within a certain range to adapt to different seasons and wind speed changes.

Construction and Installation Precautions

The installation of diagonal braces should be carried out in strict accordance with the design drawings, including determining the position, length and angle, and using bolts or welding to fix them. During the construction process, it is necessary to ensure that the connection between the diagonal braces and the main beams and cross beams is firm and reliable, and to check the quality of the installation at the same time.

Optimization Recommendations

In areas with high wind speed, it is recommended to use high-strength steel (e.g. Q355B) to make diagonal braces and combine them with reinforcement measures such as tensile cables to improve the wind resistance of the overall structure.

The angle of diagonal bracing should be selected in combination with local meteorological data and wind speed distribution, and simulated and analyzed by load calculation software to ensure a reasonable design.

The determination of the angle of diagonal bracing needs to take into account the design specifications, geographic conditions, wind loads and other factors, and strictly follow the requirements of the design drawings. In the actual construction, it is also necessary to pay attention to the installation quality and construction technology to ensure the safety and stability of the PV bracket in the high wind speed environment.