Connecting structure of circular coal bunker coal retaining wall and coal piling area raft foundation and construction method thereof

Abstract

The invention discloses a connecting structure of a circular coal bunker coal retaining wall and a coal piling area raft foundation and a construction method of the connecting structure. A right-angle convex ring table is arranged at the outer ring of a ring-shaped coal retaining wall foundation; the coal piling area raft foundation comprises a raft area and an embedding connection part, wherein the embedding connection part of the coal piling area raft foundation extends to the ring-shaped coal retaining wall and is embedded in and connected with the ring-shaped coal retaining wall foundation; the lower side of the embedding connection part of the coal piling area raft foundation is provided with a concave ring groove; the size and the shape of the concave ring groove are matched with those of the right-angle convex ring table; the right-angle convex ring table and the concave ring groove are matched and connected with each other in an embedded manner; and therefore, a node-type shared ring-shaped coal retaining wall foundation horizontal thrust embedding connection structure can be formed. According to the connecting structure the coal piling area raft foundation and the ring-shaped coal retaining wall foundation are connected together in an embedded manner, and the horizontal thrust of the ring-shaped coal retaining wall foundation is effectively shared by foundation group piles of the coal piling area raft foundation, so that the integrity of the structure is improved, the number of the foundation piles of the ring-shaped coal retaining wall foundation can be reduced, and the construction cost is lowered.

Description

technical field [0001] The invention relates to a connection structure and construction method of a coal retaining wall of a round coal bunker and a raft foundation of a coal pile area. It belongs to the construction field of coal storage yard. Background technique [0002] At present, various coal storage places such as power plants or coal mines mainly use circular coal storage bunkers, and their basic layout is as follows: figure 1 shown. The upper part of the circular coal storage bunker is mainly composed of the annular coal retaining wall and the reticulated shell of the circular coal bunker, and the foundation of the circular coal bunker is composed of the annular coal retaining wall foundation and the raft foundation of the coal pile area. The loads on the foundation of the annular coal retaining wall include the side pressure of the coal pile, that is, the horizontal thrust, the self-weight of the reticulated shell, and the external forces on the annular coal reta...

AI Technical Summary

Problems solved by technology

The disadvantage of this technical solution is that the annular coal retaining wall alone bears the lateral pressure of the coal pile. In order to resist its horizontal thrust, the number of foundation piles under the foundation of the annular coal retaining wall is large, and the number of foundation piles is mainly controlled by the horizontal force. , while the raft piles under the raft foundation in the coal pile area only bear the vertical pressure of the coal pile, the horizontal bearing capacity of the raft piles is not utilized, resulting in a decrease in the horizontal bearing capacity of the raft piles under the raft foundation in the coal pile area "Waste", resulting in high cost of basic engineering, uneconomical

The disadvantage of this technical solution is that the lateral pressure of the coal pile is transmitted to the raft foundation of the coal pile area by the bending moment generated by the annular coal retaining wall and the foundation of the annular coal retaining wall, resulting in a raft in the coal pile area. In addition to bearing its own bending moment, the slab foundation must also bear the bending moment transmitted by the annular coal retaining wall. Therefore, the thickness of the raft foundation in the coal pile area needs to be increased. The thickness of the joint even has to be the same thickness as the foundation of the annular coal retaining wall to meet the bearing capacity requirements, but this increases the engineering volume of the raft foundation

[0005] At present, there is no technical solution to how to make full use of the horizontal bearing capacity of the foundation pile group of the raft foundation in the coal pile area, thereby reducing the cost of the round coal bunker foundation project

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