Combined reinforcing method for soil by drainage consolidation via mechanical pressurizing and compaction

Abstract

The invention discloses a combined reinforcing method for soil by drainage consolidation via mechanical pressurizing and compaction. The method is characterized by comprising the following steps that1) engineering undisturbed soil is laid with at least one layer of geotechnical reinforcement material; and 2) a modularized soil pressurizing and forming device carries out pressurizing compaction drainage and consolidation on the soil, so that the laid geotechnical reinforcement material and the soil are extruded and mixed mutually, composite reinforcement is realized between the soil and the geotechnical reinforcement material, and the constructional weak soil is reinforced. The modularized soil pressurizing and forming device comprises a top rack, a pressurizing and molding module and a soil intensity detector, and the pressurizing and molding module comprises protruded bodies. The soil is extruded for drainage and molded rapidly, and the method is suitable for reinforcing soft soil foundations in a shallow or intermediate shallow layer, and especially for drainage and consolidation on weak soil with high water content as mud, fluid mud, sandy soil, mud and sand blown back fillingsoil, a pond, a lake, a dam, a deposition pond and mining mixed soil and the like.

Description

Technical field [0001] The invention relates to the field of foundation reinforcement treatment, in particular to the field of reinforcement treatment of soft soil foundations, in particular to a method for mechanically pressing, compacting, draining and consolidating soil combined with reinforcement. Background technique [0002] The soil structure is generally composed of a mixture of solids, liquid water and air. The different mixing ratios of various substances produce unequal pressure-bearing capacity. When the pressure is greater than the pressure of the soil, the pressure will cause side shift and compression. Settlement requires an artificial change in the mixing structure ratio of the undisturbed soil body. Under the action of applied pressure, the density of the solid particles in the soil body is increased. The drainage material in the soil body is used to discharge liquid water and The air channel changes the mixing structure of the soil to continuously increase the p...

AI Technical Summary

Problems solved by technology

The above-mentioned drainage consolidation method has a very long construction period, usually six months to one year to complete, so the construction cost is very high and the efficiency is very low

[0004] The above drainage consolidation method is only suitable for large area construction

Moreover, since the height of the piled load is limited, it cannot be applied to occasions with high load-bearing requirements for soil

[0005] In addition, the bearing capacity of the foundation treated by the surcharge preloading method is low, and the post-construction settlement is large. Therefore, composite reinforcement such as sand piles, powder spray piles, mixing piles, and prefabricated pipe piles are still needed in the future.

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