What caused the collapse of Yangzhou 100m-high wind turbine?

At noon on April 10, a wind turbine suddenly collapsed in Tangzhuang Town, Gaoyou, Yangzhou, and the generator was beside the road. The wind turbine whose height is more than 100 meters fell across the road, which not only blocked the traffic, but also damaged the wires and road guardrails. Fortunately, there were no vehicles and pedestrians on the road at that time, which did not cause serious consequences. The reason for the collapse of the fan should be the unreasonable tower quality and design, or the installation problem. In the absence of extreme weather, the tower has been bent and broken at the joint, which should be that the strength at that time was not enough to withstand the wind.

The fan collapse accident did not cause any casualties, because the location of the incident was relatively empty, and although it was close to the road, it did not cause any casualties. The collapsed generator is as high as 100 meter. After it collapsed, it crossed the road. Huge generator blades hit the side of the road, and the tall tower broke into three or four sections. Guardrails and wires along the road were also damaged. According to the villagers nearby, the wind that blew on the day when the generator collapsed may have been blown down by the wind. However, wind should not be the main reason for the collapse of wind turbines, because wind turbines themselves are designed to face strong winds and use wind power to generate electricity. Instead of generating electricity, it was blown down by the wind, indicating that its responsibility was embarrassing.

The wind level should be within the design range. The design and quality of the fan should be paid attention to. They should stand firm in strong winds, and the general wind level should be within the design range of resistance. But wind turbines are blown down by the wind, just like fish drowning, which should not happen when wind turbines are widely used. From this point of view, the wind turbine was blown down by the wind without extreme wind, which should be due to quality, design or installation problems, not the wind on the day of the incident.

The tower is broken and bent. It is said that when the wind blows the wind turbine, the wind force is not uniform, but sometimes has different directions, just like pulses, which have no specific laws but are random. The intermittent action of wind on blades will generate huge intermittent driving force on the tower. If the tower is not strong enough or the connection is not strong enough, it may collapse due to bending or fracture. We can see that the lower part of the collapsed fan has been bent, and several joints above the tower have been broken into several sections, which should be caused by the tower itself being not strong enough, especially in the absence of strong wind.