Building foundation treatment method for area with liquefied soil bearing strata

Abstract

The invention discloses a building foundation treatment method for an area with a liquefied soil bearing strata, and relates to the technical field of building engineering. The building foundation treatment method for the area with the liquefied soil bearing strata comprises the following steps of S1, digging upper-layer foundation pit earthwork; S2, constructing a plurality of foundation piles downwards on the inner bottom face of a foundation pit, wherein the pile tops of the foundation piles do not exceed the inner bottom face of the foundation pit, digging soil between the piles to the pile top elevation after construction of the foundation piles is completed, and cutting off pile heads; S3, digging out soil bodies of bearing strata among the foundation piles; S4, backfilling gravel among the foundation piles; and S5, carrying out quality detection. According to the building foundation treatment method for the area with the liquefied soil bearing strata, liquefaction of the bearing strata can be avoided, and the construction quality is improved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a construction foundation treatment method in an area with a liquefied soil bearing layer. Background technique [0002] In the alluvial plain of the Yellow River, the liquefaction of the bearing layer of the foundation generally occurs during building construction (the liquefaction of the bearing layer means that the saturated sand and silt particles in the bearing layer tend to become denser under strong vibrations, and the gap between the particles Relative displacement occurs between the particles, and the pore water between the particles is squeezed too late to drain, so the pore water pressure rises sharply. When the pore water pressure rises to be close to the total positive pressure on the soil particles, the friction between the soil particles The shear resistance is close to zero, and the soil at this time is like liquid), and civil buildings such as bu...

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Problems solved by technology

[0002] In the alluvial plain of the Yellow River, the liquefaction of the bearing layer of the foundation commonly occurs during building construction (the liquefaction of the bearing layer means that the saturated sand and silt particles in the bearing layer tend to become denser under strong vibrations, and the gap between the particles Relative displacement occurs between the particles, and the pore water between the particles is squeezed too late to drain, so the pore water pressure rises sharply. When the pore water pressure rises to be close to the total positive pressure on the soil particles, the friction between the soil particles The shear resistance is close to zero, and the soil at this time is like liquid), and civil buildings such as bungalows and small high-rises usually use CFG pile composite foundation treatment to save costs, but how to effectively eliminate the liquefaction of the bearing layer, reduce construction costs, and reasonably compress There is no relatively mature relevant experience at present, so a new method is urgently needed to solve the above problems

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