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Cast-in-situ dado structure for manually excavated pile and construction method

A technique for manually digging piles and wall structures, which is applied in foundation structure engineering, sheet pile walls, buildings, etc. It can solve problems such as inconsistent construction methods, achieve high strength and stability of retaining walls, and overcome the need for transportation and hoisting of prefabricated retaining walls in mountainous areas Effect

Active Publication Date: 2017-02-15
POWERCHINA HUADONG ENG COPORATION LTD
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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention firstly provides a cast-in-place retaining wall structure for artificially excavated piles, which is used to solve the problems that the existing cast-in-place reinforced concrete retaining wall design is more random and the construction method is not uniform, and at the same time can effectively improve Retaining Wall Stability and Reduced Construction Costs

Method used

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  • Cast-in-situ dado structure for manually excavated pile and construction method
  • Cast-in-situ dado structure for manually excavated pile and construction method
  • Cast-in-situ dado structure for manually excavated pile and construction method

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Embodiment Construction

[0026] Hereinafter, the specific content of the present invention will be described in detail in conjunction with the accompanying drawings by taking the manual hole-digging pile with a horizontal section of 1.1 m in width and 1.6 m in length as an example.

[0027] The retaining wall system includes a lock beam 1 on the horizontal plane of the soil body 4 of the hole and a retaining wall on the side wall of the pile.

[0028] The material of the locking beam 1, the orifice connection section retaining wall 2 and the hole inner section retaining wall 3 is reinforced concrete, and the steel bars adopted are Class I steel bars, and the pouring concrete is C25 concrete.

[0029] The bottom surface of the locking beam 1 closely fits the horizontal plane of the soil body 4, and the upper surface is parallel to the bottom surface. It is flush with the upper surface of the orifice connecting section retaining wall 3 .

[0030] The longitudinal section shape of the orifice connection...

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Abstract

The invention firstly provides a cast-in-situ dado structure for a manually excavated pile. The cast-in-situ dado structure comprises a locking beam on the horizontal plane of an orifice soil body and a dado on the pile side wall, and the dado comprises an orifice connecting section dado body and a hole interior section dado body. The invention further provides a construction method for the cast-in-situ dado structure for the manually excavated pile. A dado system for the manually excavated pile is formed in the mode that steel reinforcement cages are bound and concrete is poured in situ, and thus the problem that transportation and hoisting of prefabricated dados are difficult in mountain areas can be solved, the size of the dado system can be flexibly adjusted according to the size of the pile body, and the strength and stability of the dado are higher than those of prefabricated dados.

Description

technical field [0001] The invention belongs to the field of pile foundation engineering design and construction in geotechnical engineering, and in particular relates to a cast-in-situ retaining wall structure and a construction method for artificial hole-digging piles. Background technique [0002] Manual digging pile refers to the pile body formed by manpower digging to form a circular or square pile hole, placing a steel cage and then pouring concrete. Manual excavation piles are widely used in foundation engineering and slope engineering in my country. At present, there is no corresponding normative standard for the evaluation method of soil stability in manual excavated piles. During construction, the minimum requirements for construction technology are often determined based on experience, and accidents of pile hole soil instability occur from time to time. The instability of the hole wall of the manually excavated pile will not only lead to the re-excavation of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/68
CPCE02D5/68
Inventor 孙淼军单治钢汪明元徐学勇狄圣杰
Owner POWERCHINA HUADONG ENG COPORATION LTD
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