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Manual hole digging pile and construction method thereof

A technology of artificial digging piles and construction methods, applied in sheet pile walls, foundation structure engineering, construction and other directions, can solve the problems of popularization and application in difficult coastal soft soil areas, poor friction effect, single pile shape, etc., and achieve increased strength. and stiffness, increase side friction resistance, improve the effect of stability

Active Publication Date: 2013-08-07
宁波市产城生态建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the manual excavation piles currently used in engineering still have the following deficiencies: (1) The pile shape is single and mostly cylindrical, with poor friction and low bearing capacity; The clay and sub-clay layers are especially suitable for loess areas, but for the flow-plastic soft soil in coastal areas, due to the limitation of existing construction equipment, workers cannot excavate the soil, so this technology is difficult to popularize and apply in coastal soft soil areas

Method used

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  • Manual hole digging pile and construction method thereof
  • Manual hole digging pile and construction method thereof

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specific Embodiment 1

[0034] An artificial hole-digging pile of the present invention comprises a cylindrical trunk pile body 1 and several cylindrical branch pile bodies 2, and the branch pile bodies 2 are fixedly distributed on the outer wall of the trunk pile body 1.

[0035] In this specific embodiment, the branch piles 2 are distributed in an equilateral triangle on the circumferential section of the trunk pile 1. Considering the convenience of construction, and making the friction of the branch-shaped piles and the strength and stiffness of the surrounding soft soil reach the best The cooperation of branch pile body 2 and trunk pile body 1 is 15-25°, the diameter of trunk pile body 1 is 1.8-3.0m, the diameter of branch pile body 2 is 150-300mm, and the length of trunk pile body 1 is 15-3.0m. 20m, and the length of the branch pile body 2 is 1-2m.

[0036] In this specific embodiment, the trunk pile body 1 is provided with a trunk reinforcement skeleton, which includes a trunk spiral stir...

specific Embodiment 2

[0037] A kind of construction method of manual hole-digging pile of the present invention specifically comprises the following steps:

[0038] (1) Buried steel casing

[0039] Excavate the hole of the casing, press the first-level main steel casing 8 by the static pressure method, manually excavate the soft soil in the first-level main steel casing 8, and pump water while excavating until the first-level predetermined depth;

[0040] (2) Press the branch casing 10 into the cutout 9 of the first-level trunk steel casing 8, use Luoyang shovel to dig out the soil in the branch casing 10, and pump out the internal seepage;

[0041] (3) Weld the second-level main steel casing 8 on the top of the first-level main steel casing 8, and statically press it into the soil, and manually excavate the soft soil in the second-level main steel casing 8, while excavating pumping until the second predetermined depth is reached;

[0042] (4) Press the branch casing 10 into the cutout 9 of the ...

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Abstract

The invention discloses a manual hole digging pile and a construction method thereof. The manual hole digging pile is characterized by comprising a cylinder-shaped trunk pile body and a plurality of cylinder-shaped branch pile bodies. The branch pile bodies are fixedly distributed on the external wall of the trunk pile body and are distributed on a circumferencial section of the trunk pile body in a regular triangle way; a trunk spiral stirrup and a plurality of trunk force bearing ribs are arranged inside the trunk pile body; the trunk spiral stirrup is arranged on the inner wall of the trunk pile body along pile long spirals; the trunk force bearing ribs are uniformly distributed along the circumference of the inner surface of the trunk spiral stirrup; every branch pile body is provided with a branch spiral stirrup and a plurality of branch force bearing ribs; the branch force bearing ribs are arranged on the inner wall of every branch pile body along pile long spirals; a soil body which is corresponding to the trunk pile body is manually dug mainly in a cylinder-shaped trunk steel pile casing; and soil bodies which are corresponding to the branch pile bodies are manually dug mainly in cylinder-shaped branch steel pile casings. The manual hole digging pile and the construction method of the manual hole digging pile have the advantages of improving the side friction resistance, ultimate bearing capacity of the pile bodies and strength and stiffness of soil bodies around the pile and being capable of being widely applied to coastal soft soil areas.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a manual hole-digging pile and a construction method thereof. Background technique [0002] A deep foundation consisting of a pile and a pile cap connected to the top of the pile (referred to as a cap) or a single pile foundation connected by a column and a pile foundation, referred to as a pile foundation. The pile foundation has the characteristics of high bearing capacity, small and uniform settlement, and can be applied to almost various engineering geological conditions and various types of projects, especially for heavy buildings (structures) built on weak foundations. Therefore, in coastal and soft soil areas, pile foundations are widely used. [0003] Manual digging piles are reinforced concrete piles that are excavated by manpower and poured on site. Because of their simple construction equipment, small construction site occupation, no impact on surrounding buildings, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D5/48
Inventor 李剑虹孟湘黔邱彦税
Owner 宁波市产城生态建设集团有限公司
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