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A kind of pile foundation scour protection measure method

A protection measure and pile foundation technology, which can be used in protection devices, infrastructure engineering, buildings, etc., can solve the problems of failure of protection projects, affecting the stability of pile foundations, and failure of cracks, achieving convenient construction, reducing the consumption of manpower and materials, The effect of reduced workload

Active Publication Date: 2016-08-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pile foundation slit is one of the commonly used protection measures for deceleration and non-washing. This method can weaken the downflow and horseshoe vortex. However, in the actual application process, the slit is likely to be blocked by floating objects, resulting in the failure of the slit.
[0003] To sum up, there are some shortcomings and deficiencies in the existing partial scour protection engineering measures for pile foundations. Under certain conditions, these shortcomings and deficiencies may even lead to the failure of the entire protection project, thereby affecting the stability of the pile foundation.

Method used

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  • A kind of pile foundation scour protection measure method
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  • A kind of pile foundation scour protection measure method

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Embodiment Construction

[0020] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] First, combined with the Figure 1-2 Introducing the first embodiment of the present invention, the figure shows that the water flows from left to right, and the right half is a group of piles, and a cap 4 is erected above the group of piles, and one or more Multiple retaining rings 2 (waste tires can be selected), the diameter of the pile foundation is D 1 , the retainer diameter is D 2 ,D 2 =1.1-1.3D 1 , the height of each retainer is 20-30cm, and the water depth is H 1 , the height of the retaining ring from the river bed is H 2 , H 2 =0.01-0.02H 1 or 0.25-0.35D 1 .

[0022] The diameter D2 of the retaining ring is set to 1.1~1.3D to maximize the weakening of the horseshoe-shaped vortex and downflow, which can reduce the flow and decelerate. The height of the retaining ring is set to 20-30cm to ensure that the retaining ring...

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Abstract

The invention discloses a method for protection against pile foundation scour, which comprises the combined use of two methods of pile front row piles and retaining ring surrounding the group piles, wherein the front row piles are set in front of the pile group to deviate from the pile group piles In the direction of the high-speed water flow in front, the row of piles that reduces the water flow velocity in the wake area where the pile group is located and reduces the turbulent strength of the vortex system around the pile group; A wheel retainer for weakening the downflow and the strength of the horseshoe vortex is set on the top. The method of the invention improves the reliability of pile foundation scour protection, and enhances the stability and safety of infrastructure such as bridges and offshore platforms; at the same time, it is convenient for construction and strong in practicability. It saves time and effort, reduces the consumption of manpower and materials, and is economical.

Description

technical field [0001] The invention relates to a pile foundation scour protection measure method, which belongs to the technical field of fixed buildings. Background technique [0002] At present, the engineering measures for pile foundation scour protection at home and abroad generally adopt solid anti-scour protection and deceleration non-scour protection. The former has been widely used since its use, and it needs to place some solid materials on the bed surface around the pile foundation to improve its anti-scouring ability, so that the pile foundation is not affected by the downflow in front of the pile, and the horseshoe-shaped vortex on the pile side And the wake bottoming out behind the pile is unstable. Commonly used solid anti-shock protection measures include riprap, expanded pile foundation, concrete hinge row and concrete mold bag, among which riprap is the most widely used protection form, which is convenient for material acquisition, simple construction, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D31/06
Inventor 戴国亮龚维明何泓男
Owner SOUTHEAST UNIV
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