A local reinforcement device and reinforcement method for the foundation ring of a wind power generating set

Abstract

The invention discloses a local reinforcement device for the foundation ring of a wind power generating set, which includes the original reinforced concrete foundation and a local reinforcement device; the local reinforcement device includes a newly poured reinforced concrete foundation, an inner steel splint unit, an outer steel splint unit, and a plurality of inner steel splints The units are arranged in a ring on the upper inner wall of the foundation ring of the original reinforced concrete foundation, and a plurality of outer steel splint units are arranged in a ring on the upper outer wall of the foundation ring, and the newly poured reinforced concrete foundation is poured on the original reinforced concrete foundation. The present invention disperses and transmits the load generated by the fan operating state borne by the foundation ring through the inner and outer steel splint units, connecting steel bars, and inner and outer foundation negative bending bars, effectively reducing the stress in the reinforced foundation ring and slowing down the fatigue of the fan foundation damage, greatly increasing the service life of the reinforced wind turbine foundation. The invention also discloses a local reinforcement method for the foundation ring of the wind power generating set.

Description

technical field [0001] The invention relates to the field of wind power, in particular to a local reinforcement device and reinforcement method for a foundation ring of a wind turbine. Background technique [0002] In recent years, in the field of power generation in my country, wind power projects have developed rapidly, and the construction of onshore wind turbines has greatly increased. It has been tested and verified that the cause of most engineering accidents is that during the construction process, the quality of the surface concrete near the fan foundation ring is not well controlled, the actual strength of the concrete is lower than the design strength, and the fan has been vibrating under the action of wind load for a long time, and the fan base ring and The nearby concrete is constantly contacted and squeezed, especially the concrete near the foundation ring in the main wind direction is prone to cracking or local crushing, forming cracks and causing the fan to sw...

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Problems solved by technology

[0003] The traditional wind turbine foundation reinforcement system only uses the method of injecting high-strength grouting material or epoxy resin glue into the gap for the local cracking and crushing of the surface concrete of the wind turbine foundation, which causes the cracks between the foundation ring and the concrete to increase. , although the cured high-strength grouting material or epoxy resin glue can fill the resulting cracks, but this method does not take into account that the cracks between the foundation ring and the concrete are caused by the vibration of the foundation ring caused by the long-term wind load on the upper part of the wind turbine , no reasonable measures have been taken in the structure to effectively disperse the stress transmitted from the upper load to the foundation ring, thereby slowing down the generation and expansion of concrete cracks. Therefore, with traditional reinforcement systems, the phenomenon of concrete cracks will still exist, and wind power generation will be maintained after reinforcement. The normal operation time of the machine will not be very long

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