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OC-type fore-shaft steel pipe pile structure, steel pipe pile cofferdam and self-compaction water stop method

A steel pipe pile and lock-type technology, which is applied in the direction of infrastructure engineering, erection/assembly of bridges, bridges, etc., can solve the problem of poor mixing and fluidity of water-stop materials, hidden dangers of on-site construction safety, and poor water-stop effect Ideal and other issues, to achieve the effect of easy on-site operation, good fluidity, and easy access

Inactive Publication Date: 2018-10-16
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the environment where the water is deep and the water flow rate is fast, it is difficult to fill densely and the water-stop effect is not good.
In addition, due to the quality problem of locking steel pipe piles, the locking gaps between adjacent steel pipes are different. The mixing and fluidity of this water-stopping material are very poor, making the water-stopping effect even worse. Ideal, bringing many safety hazards to the construction site

Method used

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  • OC-type fore-shaft steel pipe pile structure, steel pipe pile cofferdam and self-compaction water stop method
  • OC-type fore-shaft steel pipe pile structure, steel pipe pile cofferdam and self-compaction water stop method
  • OC-type fore-shaft steel pipe pile structure, steel pipe pile cofferdam and self-compaction water stop method

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0029] see Figure 1 to Figure 3 As shown, the embodiment of the present invention provides an OC-type lock-type steel pipe pile structure, which includes a large-diameter steel pipe 1, and also includes a C-shaped small-diameter steel pipe 2 coaxial with the large-diameter steel pipe 1 and an O-shaped small-diameter steel pipe 3. The C-type small-diameter steel pipe 2 and the O-type small-diameter steel pipe 3 are arranged at intervals on the outer circumference of the large-diameter steel pipe 1; among them, the C-type small-diameter steel pipe 2 is provided with a gap 20 along the axial direction; A notch 30 is provided, and the O-shaped small-diameter steel pipe 3 is used for fitting with the C-shaped small-diameter steel pipe 2 of another adjacent large-diameter steel pipe 1 .

[0030] In the OC type lock type steel pipe pile structure p...

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Abstract

The invention discloses an OC-type fore-shaft steel pipe pile structure, a steel pipe pile cofferdam and a self-compaction water stop method. The steel pipe pile structure comprises large-diameter steel pipes, C-shaped small-diameter steel pipes and O-shaped small-diameter steel pipes, wherein each C-shaped small-diameter steel pipe and the corresponding O-shaped small-diameter steel pipe are coaxial with the corresponding large-diameter steel pipe and are arranged on the outer circumference of the large-diameter steel pipe in a spaced mode. Each C-shaped small-diameter steel pipe is providedwith a notch in the axial direction, each O-shaped small-diameter steel pipe is provided with a rabbet, and each O-shaped small-diameter steel pipe is used for being embedded into the corresponding C-shaped small-diameter steel pipe on another adjacent large-diameter steel pipe. The steel pipe pile structure is simple and good in water stop effect.

Description

technical field [0001] The invention relates to the technical field of deep foundation pit construction for bridge foundations, in particular to an OC-type locking steel pipe pile structure, a steel pipe pile cofferdam and a self-compacting water-stopping method. Background technique [0002] The commonly used water-stopping method for OC-type locking steel pipe piles is: filling the gap between the female end and the male end of the locking steel pipe with a mixture of clay and sawdust or clay and sand to achieve the water-stopping effect. However, in the environment where the water is deep and the water flow rate is fast, it is difficult to fill it densely, and the water-stop effect is not good. In addition, due to the quality problem of locking steel pipe piles, the locking gaps between adjacent steel pipes are different. The mixing and fluidity of this water-stopping material are very poor, making the water-stopping effect even worse. Ideal, it brings many safety hazard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E02D19/04
CPCE01D21/00E02D19/04
Inventor 周超舟毛伟琦刘晓阳耿克强黄辉
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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