Structure for improving stability of soft body mattress and grating procedure in strong wind deep water area and its construction method

Abstract

The invention relates to a structure for improving stability of a soft body mattress and a grating procedure in a strong wind deep water area, which is characterized by comprising a fully paved geogrid and composite earthwork soft body mattresses; both ends of the lower part of the geogrid are provided with the composite earthwork soft body mattresses; the composite earthwork soft body mattressescomprise anti-aging buffer layers and geotechnical clothes; the anti-aging buffer layers are located between the geogrid and the geotechnical clothes; the upper surface of the geogrid is paved with afull sand rib soft body mattress; the loading density in 4m scale of two side edges of the composite earthwork soft body mattresses is 1 piece / 0.5m. The loading density of the soft body mattress in the other position is 1 piece / 2m; the loading density of the upper part of the geogrid is 1 piece / 2.5m. By adopting the technical scheme, the stability of foundation construction is greatly enhanced, the project quality and uniform settlement are improved; besides, the difficulties of reshipment and hoisting, serious wave scouring, easy corrosion and aging of mattress body are completely solved; meanwhile, the structure is simple, convenient to construct, able to reduce cost, and others.

Description

technical field [0001] The invention belongs to the technical field of pre-dredging and post-dredging engineering, and in particular relates to a structure and a construction method for improving the stability of a soft row and a grid process in a deep-water area with strong wind and waves. Background technique [0002] At this stage, my country's geotextile industry has begun to take shape, but compared with advanced countries and regions such as Europe and the United States, the overall technical level of the industry and the construction of supporting standard systems are still at a relatively low stage. [0003] Geotextile soft row has the characteristics of reverse filtration, isolation, anti-scouring, integrity, and strong adaptability. It has been widely used in various aspects of hydraulic construction. It can effectively prevent water from directly scouring the bottom of the river (sea) and seepage due to water flow. The local deformation and damage of the river (se...

AI Technical Summary

Problems solved by technology

However, there are no effective protection measures for finished products after paving and construction at this stage, and the following problems often exist in the paving of soft paving in deep water areas with strong winds and waves:

[0004] 1. Due to the frequent and large wind and waves on the site, the strength of the row body often does not meet the site requirements, which is easy to cause tearing and damage

[0005] 2. The water flow at the construction site is relatively large, and the sediment at the edge of the soft row is easy to move, resulting in the gradual incision of the unprotected seabed. With the increase of the action time of the water flow, the unprotected seabed at the edge of the soft row is cut down sharply, forming a local scour pit, which promotes the soft drainage. Deformation damage

[0006] 3. Restricted by the processing technology, the row pads are mostly reinforced longitudinally, but not transversely, so that the row body is not flexible enough to adapt to the large deformation of the river bed. After the row body is "hanging", the tensile force on the row body is greater than the tensile strength tear when

[0007] 4. Limited by processing, the width of the row body is small. When the scour pit develops to the protected area of ​​more than two row bodies, the riverbed at the overlap is easy to be exposed, which makes the scour easily develop to the inside of the soft row body

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