Partitioned construction method for concrete of land fan foundation

Abstract

The invention provides a subarea construction method for land fan foundation concrete. The subarea construction method comprises the following steps that firstly, a fan foundation pit is excavated, and cushion layer concrete is poured; 2, bottom steel bar construction in the foundation pit, steel bar and top steel bar construction in the middle area of a middle pier, reinforcement construction of laying a second top plate at the top of an expansion area of the middle pier and laying a first template in the middle area of the middle pier; thirdly, roller compacted concrete construction is conducted on a cantilever plate area, first top plate reinforcing bars are laid on the top of the roller compacted concrete, then top distorted concrete construction is conducted, and screeding is conducted according to the foundation gradient after construction is completed; and fourthly, conventional concrete is poured into the middle pier middle area and the middle pier expansion area, layered pouring is conducted in the pouring process, and final pouring and vibrating are completed. According to the construction method, concrete process partition design and steel bar optimization partition design are conducted on the fan foundation, the construction progress of the fan foundation can be accelerated, and more importantly, control over the concrete construction quality of the fan foundation is facilitated.

Description

technical field [0001] The invention relates to the field of wind power generation construction, in particular to a method for constructing concrete partitions for foundations of wind turbines on land. Background technique [0002] In order to develop wind energy resources more efficiently, the capacity of a single fan unit has been continuously increased, and the corresponding fan base volume has also been continuously increased, and the amount of concrete engineering required has also continued to increase. The design and construction technology of fan concrete foundation widely used at present has the following weaknesses: the volume of a single fan foundation is large, the amount of concrete poured on site is large, and the top of the concrete foundation is densely covered with steel mesh on the surface, and the concrete material is pumped through the steel mesh by a pump truck On the surface of the warehouse, there are separation of concrete blanks and aggregates, diffi...

AI Technical Summary

Problems solved by technology

The design and construction technology of fan concrete foundation widely used at present has the following weaknesses: the volume of a single fan foundation is large, the amount of concrete poured on site is large, and the top of the concrete foundation is densely covered with steel mesh on the surface, and the concrete material is pumped through the steel mesh by a pump truck On the surface of the warehouse, there are separation of concrete blanks and aggregates, difficulty in guaranteeing the order and thickness of concrete paving, large-scale contamination of the surface steel mesh by concrete materials and cannot be removed in time, difficulty in ensuring the order and depth of concrete vibration, etc. A series of problems lead to the difficulty in the vibration quality of the fan foundation concrete and the gripping force of the surface reinforcement.

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