Construction method of section-steel triaxial soil-cement mixing pile

A technology of cement-soil mixing pile and construction method, which is applied to sheet pile wall, foundation structure engineering, construction and other directions, can solve the problems of long time of re-mixing process, difficulty in pre-mixing sinking, etc. Solve the effect of too long process time

Inactive Publication Date: 2013-10-30
中铁城建集团第三工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a construction method of steel triaxial cement-soil mixing pile, which not only solves the problem of pre-stirring sinking difficulty, but also solves the problem of too long re-stirring process time

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  • Construction method of section-steel triaxial soil-cement mixing pile
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  • Construction method of section-steel triaxial soil-cement mixing pile

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Effect test

Embodiment 1

[0032] The steel cement-soil mixing pile of the present invention uses a three-axis long screw drilling machine to drill holes in the soil, cut the soil, air jets when drilling, spray cement slurry, and spray cement slurry when drilling to achieve repeated mixing with the foundation. Each construction unit adopts overlapping construction, and inserts section steel into the mixing pile before the cement soil is hardened; thus forming a composite pile body that not only stops water but also functions as an enclosure structure.

[0033] Generally, the ZKD85-3 multi-axis drilling machine is mainly used in the construction.

[0034] The process of the construction method of the present invention such as flow figure 1 As shown, according to the measurement results, a guide trench was dug at the position of the three-axis mixing pile to be constructed. The width of the guide trench was the pile diameter plus 400 mm. At the same time, underground obstacles should be removed, and the excess ...

Embodiment 2

[0055] The steel cement-soil mixing pile of the present invention uses a three-axis long screw drilling machine to drill holes in the soil, cut the soil, air jets when drilling, spray cement slurry, and spray cement slurry when drilling to achieve repeated mixing with the foundation. Each construction unit adopts overlapping construction, and inserts section steel into the mixing pile before the cement soil is hardened; thus forming a composite pile body that not only stops water but also functions as an enclosure structure.

[0056] Generally, the ZKD85-3 multi-axis drilling machine is mainly used in construction.

[0057] The process of the construction method of the present invention such as flow figure 1 As shown, according to the measurement results, a guide trench was dug at the position of the three-axis mixing pile to be constructed. The width of the guide trench was the pile diameter plus 400 mm. At the same time, underground obstacles should be removed, and the excess soil...

Embodiment 3

[0076] The steel cement-soil mixing pile of the present invention uses a three-axis long screw drilling machine to drill holes in the soil, cut the soil, spray jets when drilling, spray cement slurry, and spray cement slurry when drilling to achieve repeated mixing with the foundation. Each construction unit adopts overlapping construction, and inserts section steel into the mixing pile before the cement soil is hardened; thus forming a composite pile body that not only stops water but also functions as an enclosure structure.

[0077] Generally, the ZKD85-3 multi-axis drilling machine is mainly used in the construction.

[0078] The process of the construction method of the present invention such as flow figure 1 As shown, according to the measurement results, a guide trench was dug at the position of the three-axis mixing pile to be constructed. The width of the guide trench was the pile diameter plus 400 mm. At the same time, underground obstacles should be removed, and the exces...

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Abstract

The invention discloses a construction method of a section-steel triaxial soil-cement mixing pile, comprising the following construction steps: (1) measuring paying-off positioning pile; (2) digging trench; (3) arranging guide positioning section-steel; (4) the mixer taking place, correcting and reviewing levelness and verticality of the pile driver; (5) mixing cement grout, starting an air compressor, and sending the grout to the pile driver; (6) a drill bit spraying grout, gas, cutting soil body and sinking to the elevation of designed pile bottom; (7) the drill bit spraying the grout and elevating to the elevation of designed pile top; (8) vertically lifting the section-steel and positioning the section-steel; (9) correcting and reviewing the verticality of the section-steel; (10) inserting and fixing the section-steel. The pilling process provided by the invention is suitable for cohesive soil with large compression modulus, soft ground layer which is mainly composed of cohesive soil and silty cohesive soil, mucky soil, plain fill and saturation loose sand without flowing underground water; especially for the cohesive soil with large compression modulus, the invention not only can solve the problem that the pre-mixing sinking is difficult, but also can solve the problem that the time of repeatedly-mixing process is too long.

Description

Technical field [0001] The invention relates to a construction method of a three-axis cement-soil mixing pile, in particular to a construction method for inserting a section steel into a three-axis cement-soil mixing pile to form a steel three-axis cement-soil mixing pile. Background technique [0002] The current cement-soil mixing piles are divided into single-axis cement-soil mixing piles, biaxial cement-soil mixing piles, and three-axis cement-soil mixing piles according to the number of rotating heads. The best use effect should be the three-axis cement-soil mixing pile. It not only has great power in cutting the soil, and the soil is evenly mixed, but also has the characteristics of water stop, soil retaining and good pile quality. The shaft cement-soil mixing pile construction method is widely used in general foundation reinforcement in civil engineering, soft soil foundation reinforcement, gravity retaining wall, and can be used as a foundation pit maintenance structure a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/46
Inventor 贾继光穆民王灵芳杨刚
Owner 中铁城建集团第三工程有限公司
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