Soft foundation reinforcing method

Abstract

The invention provides a soft foundation reinforcing construction method. The soft foundation reinforcing construction method comprises the following steps that step (1) construction treatment is carried out on an area to be reinforced by a drainage consolidation method; step (2) drainage consolidation operation is carried out continuously; step (3) a muddy soil layer detection sample is taken through drilling in the area to be reinforced, a coefficient of compressibility a of the muddy soil layer detection sample is detected, when a is greater than or equal to 0.1MPa<-1>, the step (4) is carried out and when a is less than 0.1MPa<-1>, the step (2) is repeated; and step (4) cement mixing pile construction is carried out on the area to be reinforced. According to the soft foundation reinforcing construction method, the drainage consolidation method is combined with the cement mixing pile construction to reinforce a soft foundation, and on the one hand, the problem of a long constructionperiod caused by purely depending on drainage consolidation method construction is solved; and on the other hand, the problem of pile breaking of a mixing pile caused by purely depending on the cement mixing pile construction due to flowing of a muddy soil layer is solved.

Description

technical field [0001] The invention relates to foundation treatment technology, in particular to a weak foundation reinforcement method. Background technique [0002] At present, most of the sluices in my country are built near the river, and their foundations are mostly muddy soil. Conventional methods for treating the weak foundation of sluices include soil replacement method, drainage consolidation method, and deep mixing method. Among them, the drainage fixing method has the advantages of convenient construction, low engineering cost, little disturbance to the soil, and construction on ultra-soft soil with light machinery, but the construction period is long; while the cement mixing pile has the advantages of low price, simple operation, and low cost. Noise, no site pollution, etc., but in the silt soil with high water content, the cement slurry of the mixing pile is easily diluted when it encounters water, and there is a phenomenon of loss, which affects the growth of ...

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Problems solved by technology

Among them, the drainage fixing method has the advantages of convenient construction, low engineering cost, little disturbance to the soil, and construction on ultra-soft soil with light machinery, but the construction period is long; while the cement mixing pile has the advantages of low price, simple operation, and low cost. Noise, no site pollution, etc., but in the silt soil with high water content, the cement slurry of the mixing pile is easily diluted when it encounters water, and there is a phenomenon of loss, which affects the growth of its strength, and the flow of silt is easy to cause broken piles and interlayers and other problems, the integrity of the pile body cannot be guaranteed

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