Double consolidated foundation treatment method using construction waste aggregate and composite foundation

Abstract

The present invention provides a double consolidated foundation treatment method using construction waste aggregate. The double consolidated foundation treatment method using construction waste aggregate comprises the following steps: a. pre-setting a number of pile points on the surface of the foundation, and placing the aggregate into the aquifer or the permeable layer at the lower part of the aquifer through a immersed tube at a plurality of pile points to form a plurality of vertical drainage bodies; b. compacting a plurality of vertical drainage bodies through the way of tamping, and forming a wedge-shaped drainage pile body with wide-top and narrow-bottom or big-top and small-bottom respectively, thereby compacting the periphery soil body by the lateral expansion process of the drainage body forming the wedge-shaped structure, and forming a dense pile-to-pile soil body, at the same time, the water contained in the soil is squeezed to both sides of the wedge-shaped drainage pile body and squeezed into the adjacent vertical drainage body, the pore water is discharged from the soil through the vertical drainage body by the compressive stress of the soil. According to the doubleconsolidated foundation treatment method using construction waste aggregate, the water content of the soil can be greatly reduced in the soft soil with large water content, so as to achieve the characteristics of high bearing capacity, short construction period and low cost. The invention further provides a composite foundation.

Description

technical field [0001] The invention relates to a ground treatment method, in particular to a double-consolidated ground treatment method using construction waste aggregates and a composite ground. Background technique [0002] For various building foundations, roadbeds, airport runways, and site foundations, when encountering newly loose fill or weak soil layers, foundation reinforcement treatment is required to achieve stability standards and meet design requirements and use requirements. However, when the water content of the soil is high, it is impossible to directly use the method of tamping to form piles, let alone effective reinforcement treatment. In order to be able to drain the water in the soil, the Chinese invention patent application with the document number CN106759223A discloses a controllable rigid pile + drainage body + reinforced cushion composite foundation, in which vertical piles are arranged at intervals in the foundation. The drainage body and the cap...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the treatment methods for soft foundations with large water content in the prior art cannot take into account the characteristics of high bearing capacity, short construction period and low cost at the same time, thus providing a soft foundation suitable for large water content The double-consolidated foundation treatment method and composite foundation using construction waste aggregates can achieve high bearing capacity, short construction period and low cost

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