Composite special-shaped cofferdam and its construction method

A construction method and composite technology, applied in infrastructure engineering, construction, etc., can solve problems such as difficult transportation, overall launching, and difficult overall assembly, and achieve the effects of good quality of the back cover, prevention of mud and sand inflow, and reduction of material costs

Active Publication Date: 2021-12-07
湖北省路桥集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to constraints such as size and weight, it is difficult to achieve overall assembly at present, and it is often difficult to transport and launch as a whole

Method used

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  • Composite special-shaped cofferdam and its construction method
  • Composite special-shaped cofferdam and its construction method
  • Composite special-shaped cofferdam and its construction method

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0042] Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention and The above terms should not be con...

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Abstract

The invention provides a compound special-shaped cofferdam and its construction method, comprising the following steps: adopting several block units to assemble in the horizontal direction to form a double circular arc, and welding in the middle to form a dumbbell-shaped structure as a base layer and an additional layer, The vertical direction adopts layered welding to form the whole; the steel plate truss buoyancy system increases the draft of the cofferdam, and the launching air bag assists the launching; after the dragging and floating are in place, the "anchor system + steel casing" is used to accurately position the anchor; The bottom of the weir is sealed by high-pressure sand injection in symmetrical and uniform compartments, and the bottom-sealing concrete is divided into compartments and symmetrically divided into blocks, and is poured from the periphery to the middle at one time. The construction method has the characteristics of high construction efficiency, simple installation, strong launching stability, good plugging and anti-seepage performance, and strong anti-scouring ability, and is suitable for the construction of composite special-shaped cofferdams in water areas with complex rock formations.

Description

technical field [0001] The invention relates to the technical field of bridge deepwater foundation cap platform cofferdam construction, in particular to a composite special-shaped cofferdam and a construction method. Background technique [0002] The bridge foundation is the part of the bridge substructure in contact with the foundation. In engineering, the bridge foundation with a water depth of more than 5-6m is generally called the deep water foundation of the bridge. There are usually two problems to be solved in the deep water foundation construction of bridges: the construction of the bored pile construction platform and the construction of the water cap and pier (tower) body. The construction of caps and piers (towers) must be carried out in an anhydrous environment. Therefore, when building caps and piers (towers) buried underwater, a temporary maintenance structure-cofferdam must be built first to form a water-proof structure. In order to build caps and piers (towe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04E02D15/08
CPCE02D15/08E02D19/04E02D2300/0029
Inventor 周俊谢东升郭勇黄齐龙张泽毅
Owner 湖北省路桥集团有限公司
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