Steel slag doped composite foundation structure and construction method thereof

Abstract

The invention discloses a steel slag doped composite foundation structure and a construction method thereof. The steel slag doped composite foundation structure comprises a gravel sand cushion layer,a steel slag mattress layer and a plurality of steel slag concrete piles; the gravel sand cushion layer is laid on a foundation, and the foundation comprises a soft soil layer and a supporting layer;the steel slag mattress layer is laid on the gravel sand cushion layer, and the steel slag mattress layer sequentially comprises a lower-layer steel slag cushion layer, a geogrid and an upper-layer steel slag cushion layer from bottom to top; all the steel slag concrete piles are arranged on the soft soil layer of the foundation at intervals, the upper end of each steel slag concrete pile penetrates through the gravel sand cushion layer and extends into the steel slag mattress layer, and the lower end of each steel slag concrete pile penetrates through the soft soil layer and extends into thesupporting layer at the bottom of the soft soil layer. The invention further discloses the construction method of the steel slag doped composite foundation structure. By the adoption of the compositefoundation structure and the construction method thereof, gravel resources can be saved, the utilization rate of steel slag is increased, the strength and rigidity of the composite foundation structure are improved, and the composite foundation structure has a stronger transverse reinforcing effect.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering foundation treatment, in particular to a composite foundation structure mixed with steel slag and a construction method thereof. Background technique [0002] With the continuous development of the economy and the continuous improvement of people's material and cultural needs, the construction activities of roads, railways, buildings and other projects are becoming more and more frequent, and the construction of projects requires a large amount of materials, especially a large amount of sand and gravel. Among them, sand Stone is the most widely used material in engineering construction, and its price is relatively expensive. However, the annual demand for sand and gravel in my country has increased year by year, resulting in over-exploitation of sand and gravel. Due to the over-exploitation of sand and gravel, my country's sand and gravel market is currently in a state of "hungry"....

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Problems solved by technology

[0004] The purpose of the present invention is to provide a composite foundation structure mixed with steel slag and its construction method, so as to overcome the problems of high price, excessive mining, and solid waste steel slag, which mainly use sand and gravel as raw materials in existing roads, railways and construction projects. Disadvantages of Utilization

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