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Siltation promoting and repairing device and method for local scoured pit

A repair method and partial technology, applied in construction, climate change adaptation, infrastructure engineering, etc., can solve the problems of increasing scouring capacity, heavy protective structure weight, and increasing foundation bearing capacity, so as to reduce construction costs, Reduce the difficulty of installation and eliminate the effect of the root cause

Pending Publication Date: 2022-08-05
喻昕蕾
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the weight of the protective structure is very heavy. Not only is the construction difficult and the cost is high, but also the total underwater weight transmitted to the marine engineering foundation is large, which increases the foundation's need for the foundation's bearing capacity. stability
In addition, although these groove structures increase the local frictional resistance and reduce the overall flow velocity of the approaching flow, they also increase the turbulent intensity near the bottom. A large amount of bottom sand is directly rolled up, which increases the suspension capacity of the water flow on the sediment. Therefore, the protective structure will not only have a good effect of promoting sedimentation, but will increase the scouring capacity

Method used

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  • Siltation promoting and repairing device and method for local scoured pit

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Embodiment 1

[0042] Assuming that a 2m diameter pier standing upright in the river channel forms a 6m deep scour pit under the action of water flow, and the scour pit radius is 30m. The scour has posed a threat to the safety of the pier and needs to be protected from scour. refer to figure 1 As shown, this embodiment provides a silt-promoting and repairing device for a partial scour pit, which includes a frame 1 , a fixing device, a floating body 2 and a mesh component 3 in the figure.

[0043] refer to figure 1 As shown, the frame 1 is arranged around the pier, and the inner ring of the frame 1 is fixed on the pier.

[0044] The fixing device is used to fix the frame 1 with the bed around the pier to prevent the frame 1 from being washed away by water currents and waves.

[0045] The floating body 2 is arranged on the frame 1, and the floating body 2 is used to provide buoyancy for the frame 1 and reduce the load imposed by the device on the pile pier. As a preferred way, the floating ...

Embodiment 2

[0064] Assuming that the pile has been standing on the bottom of the sediment d 95 In the ocean with a diameter of 0.2mm and a diameter of 5m, a scour pit with a depth of 12m may be formed under the action of current and wave scouring. The obvious scour range is 80m in radius. Scouring will pose a threat to the safety of the pile, and it is necessary to prevent the pile in the early stage of construction. Scour protection. refer to figure 1 As shown, this embodiment provides a silt-promoting and repairing device for a partial scour pit, which includes a frame 1 , a fixing device, a floating body 2 and a mesh component 3 in the figure.

[0065] The skeleton 1 is a hollow rod made of cast iron, the skeleton 1 is arranged around the pile, and the inner ring is fixedly arranged on the outer wall of the pile.

[0066] The fixing device provides cables 5 to fix the frame 1 to the bed around the pile, preventing the frame 1 from being washed away by currents and waves.

[0067] Th...

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Abstract

The invention provides a siltation promotion repair device and method for a local scour pit, and the device comprises a skeleton which is arranged around a pile pier, and the inner ring of the skeleton is fixed on the pile pier; the fixing device is used for fixing the framework and the bottom bed around the pile pier; the floating body is arranged on the framework and used for providing buoyancy for the framework; the net-shaped component is arranged on the framework and completely covers a pit opening of the scouring pit, so that the resistance of subsurface flow and vortex motion around the pile pier is increased, the water flow intensity below the net-shaped component is weakened, the sand carrying capacity of the water flow below the net-shaped component is reduced, and coming sand rapidly falls below a net through net holes of the net-shaped component to be deposited; and the net-shaped component is in a neutral buoyancy state in water. According to the invention, the source of scouring is fundamentally eliminated, the harm caused by scouring is avoided, the installation difficulty is reduced, and the construction cost is greatly reduced; the underwater weight of the device is light, the load acting on a pile pier and other foundations cannot be obviously increased, and therefore the requirement for the bearing capacity of a foundation does not need to be increased.

Description

technical field [0001] The invention relates to the field of water conservancy and ocean engineering, in particular to a silt-promoting repairing device and method for partial scour pits. Background technique [0002] Pile piers are the foundation of bridges, wharves, offshore platforms, and offshore wind power. They are now widely seen in rivers, lakes and seas, and will continue to emerge with economic and social development. However, local erosion around the piers often endangers the safety of the superstructure. Therefore, it is necessary to take corresponding anti-scour measures. [0003] After long-term research, scholars at home and abroad have developed numerous measures to solve the problem of local scour of piles and piers, which can be roughly divided into three categories: 1) Passive protection is also called physical protection, that is, to improve the anti-scour ability of bed bedding; The main measures are: riprap protection, expansion of bridge pier foundati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/26E02D27/52E02D27/12
CPCE02B3/26E02D27/52E02D27/12Y02A10/11
Inventor 喻昕蕾
Owner 喻昕蕾
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