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Soft soil foundation composite treatment method
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A composite treatment and soft soil foundation technology, applied in the direction of sustainable waste treatment, soil protection, solid waste management, etc., can solve the problems of slow pile formation speed, achieve faster pile formation speed, increase consolidation speed, and increase bearing capacity effect of ability
Active Publication Date: 2021-03-12
温州正城建设有限公司
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[0007] In order to improve the problem of slow piling speed of soft soil foundation in coastal beaches, this application provides a composite treatment method for soft soil foundation
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Embodiment 1
[0047] A method for composite treatment of soft ground, comprising the following steps:
[0049] S1, in parts by weight, weigh 400 parts of water, 90 parts of cement, 30 parts of wheat strawpowder, 10 parts of 15wt% sulfuric acid and stir evenly, the stirring speed is 200r / min, and the stirring time is 10min to obtain the mixture;
[0050] S2, add 2 parts of triethylaminealcohol and stir, the stirring speed is 200r / min, and the stirring time is 3min, to obtain the composite cement slurry.
[0051] Preparation before construction:
[0052] Level the construction site, place the construction piles after leveling, the distance between adjacent construction piles is 2m, and move the pile driver to the pile location, and center and level the pile driver.
[0053] Construction works:
[0054] S1. Immediately fill the prepared composite cement slurry into the collecting hopper of the pile driver. The mixing pile sinks to the design...
Embodiment 2
[0060] A method for composite treatment of soft ground, comprising the following steps:
[0062] S1, in parts by weight, weigh 600 parts of water, 110 parts of cement, 40 parts of wheat strawpowder, 20 parts of 15wt% sulfuric acid and stir evenly, the stirring speed is 300r / min, and the stirring time is 15min to obtain the mixture;
[0063] S2, add 3 parts of triethylaminealcohol and stir, the stirring speed is 300r / min, and the stirring time is 5min, to obtain composite cement slurry.
[0064] Preparation before construction:
[0065] Level the construction site, place construction piles after leveling, the distance between adjacent construction piles is 2.3m, and move the piling machine at the pile position to center and level the pile driver.
[0066] Construction works:
[0067] S1. Immediately fill the prepared composite cement slurry into the collecting hopper of the pile driver. The mixing pile sinks to the design dep...
Embodiment 3
[0073] A composite treatment method for soft ground, characterized in that it comprises the following steps:
[0075] The preparation method of composite cement slurry is as follows:
[0076] S1, in parts by weight, weigh 500 parts of water, 100 parts of cement, 35 parts of wheat straw powder, 15 parts of 15wt% sulfuric acid and stir evenly, the stirring speed is 250r / min, and the stirring time is 13min to obtain the mixture;
[0077] S2, add 3 parts of triethylamine alcohol and stir, the stirring speed is 250r / min, and the stirring time is 4min, to obtain composite cement slurry.
[0078] Preparation before construction:
[0079] Level the construction site, place the construction piles after leveling, the distance between adjacent construction piles is 2.2m, and move the piling machine to the piles to center and level the pile driver.
[0080] Construction works:
[0081] S1. Immediately fill the prepared composite cement s...
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Abstract
The invention relates to the field of foundation treatment methods, and particularly discloses a soft soil foundation composite treatment method. The soft soil foundation composite treatment method comprises the following steps that composite cementslurry is prepared, specifically, S1, water, cement, wheat strawpowder and sulfuric acid are weighed and stirred evenly, and a mixture is obtained through stirring; S2, triethylaminealcohol is added and stirred until the materials are uniformly stirred so as to obtain composite cementslurry; and preparation before construction is conducted, specifically, construction engineering is conducted, specifically, S1, a stirring pile sinks to the designed depth for the first time, the stirring pile is lifted, and slurry spraying and stirring are conducted till the stirring pile reaches the ash stopping face; S2, the stirring pile sinks to the designed depth for the second time, the stirring pile is lifted, and slurry spraying and stirring are conducted till the stirring pile reaches the ash stopping face; S3, the stirring pile sinks to the designed depth for the third time, the stirring pile is lifted, and slurry spraying and stirring are conducted till the stirring pile reaches the ash stopping face; and S4, construction is conducted on the rest of pile positions according to the steps S1, S2 and S3. The soft soil foundation composite treatment method has the characteristics of being high in pile forming speed and pile forming strength, the construction period is shortened, and meanwhile the compressive strength of a soft soil foundation is also guaranteed.
Description
technical field [0001] The application relates to the field of ground treatment methods, more specifically, it relates to a soft ground composite treatment method. Background technique [0002] Soft soil refers to the weak soil layer with low strength and high compressibility. According to the characteristics, soft soil can be divided into five types: soft clay soil, muddy soil, silt, peaty soil and peat. Soft soil has high natural water content, large void ratio, high compressibility, low strength, and special engineering geological properties such as creep and thixotropy. [0003] With the increasing scarcity of land resources in coastal areas, tidal flats are an important reserve of land resources, and the investment in tidal flat construction is increasing. The number and scale of engineering construction on tidal flats are developing rapidly. [0004] The soft soil of coastal beaches has the characteristics of high water content, low shear strength, high sensitivity, ...
Claims
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Application Information
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