An anti-scouring suction bucket foundation and its layered grouting method for strengthening the soil layer

A technology of grouting reinforcement and suction bucket, which is applied in basic structure engineering, construction, etc., can solve the problems of inaccurate grouting, uncertain direction of cement slurry diffusion, etc., so as to improve the integrity and shear strength, and increase the friction of bucket soil Large, the effect of improving the shear strength

Active Publication Date: 2019-11-08
HOHAI UNIV
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Problems solved by technology

For example, the Chinese invention patent with the notification number CN 106240749 A discloses a "grouting suction anchor and its installation method". It pours cement slurry into the gap between the middle cylinder and the soil body. The diffusion direction of the cement slurry is uncertain and cannot be accurately injected. pulp

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  • An anti-scouring suction bucket foundation and its layered grouting method for strengthening the soil layer
  • An anti-scouring suction bucket foundation and its layered grouting method for strengthening the soil layer
  • An anti-scouring suction bucket foundation and its layered grouting method for strengthening the soil layer

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Embodiment Construction

[0027] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention but not to limit the scope of the present invention.

[0028] figure 1 It is a schematic diagram of a three-dimensional structure of the present invention; figure 2 It is the front view of the present invention; image 3 It is a schematic cross-sectional view of A-A of the present invention; Figure 4 It is a schematic perspective view of the stiffened rib tube of the present invention; the parts names of reference signs are: self-weight pneumatic valve 1, barrel cover 2, connecting rod 3, vacuum pump pneumatic valve 4, grouting pipe 5, grouting hole 6, stiffening rib tube 7, Barrel wall 8, moving piston 9, high-pressure nozzle 10.

[0029] It can be seen from the accompanying drawings that the anti-scouring suction barrel founda...

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Abstract

The invention discloses an erosion prevention suction bucket foundation and a layered soil layer grouting reinforcement method thereof. The suction bucket foundation comprises a connecting rod and a barrel body, wherein the periphery of the barrel body is uniformly provided with a plurality of stiffened rib pipes each of which is provided with a plurality of grouting holes; a grouting pipe penetrates through each stiffened rib pipe; and a high-pressure sprayer is arranged on the bottom end of each grouting pipe. The method comprises the following operation steps: step (1): placing the suctionbucket foundation; step (2): grouting; step (3): performing high classification; and step (4): lifting a moving piston step by step. The erosion prevention suction bucket foundation and the layered soil layer grouting reinforcement method thereof can not only realize active erosion protection, but also strengthen the soil in the buried depth range of the whole bucket in a layered manner accurately, and increase the friction force of the bucket soil after grouting, and greatly improve the anti-pull, anti-compression and anti-overturning bearing capacity of the suction bucket foundation.

Description

technical field [0001] The invention relates to a marine foundation scour protection device, in particular to a scour-proof suction barrel foundation and a layered grouting reinforcement soil layer method, belonging to the technical field of marine engineering. Background technique [0002] The suction bucket foundation is a kind of marine foundation. In the marine environment, it is washed by seawater, the soil around the foundation is lost, and the effective embedding depth of the foundation is reduced, resulting in a serious reduction in the bearing capacity of the foundation. The existing marine foundation scour protection is mainly riprap protection and overlying protection. Rubble protection is to place stones in a certain range around the foundation to reduce local erosion around the foundation; or use steel plates and geotextiles to cover the soil around the foundation to achieve the purpose of protecting the soil layer. The construction costs of these anti-scouring...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/52
CPCE02D27/525
Inventor 刘金忠朱珍德王保田张明生阙相成张聪龚超何燕新
Owner HOHAI UNIV
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