Weir-mold integrated double-wall steel cofferdam with vertical hidden enclosing purlins

Abstract

A weir mold integrated double-wall steel cofferdam of a vertical hidden type enclosing purlin is formed by stacking and welding a plurality of layers of steel cofferdams, each layer of steel cofferdam is formed by splicing and welding four right-angle plates and a plurality of plane plates, an inner cavity of each layer of steel cofferdam is provided with an inner support, each right-angle plate and each plane plate comprise an inner wall plate and an outer wall plate, and the outer wall plate is provided with an outer support. The inner wall plate and the outer wall plate are each provided with a plurality of layers of horizontal annular plates connected through horizontal supports, a bin partition plate is welded to one side between the inner wall plate and the outer wall plate in a blocking mode, and the two ends of the inner side of the bin partition plate are each provided with a vertical enclosing purlin welded and fixed to the corresponding wall plate in a welded mode. The inner sides of the two plate walls on the other side between the inner wall plate and the outer wall plate are each fixedly provided with a vertical enclosing purlin, and an enclosing purlin support is fixedly connected between every two corresponding vertical enclosing purlins; two adjacent plates are welded in a way that one side of one plate with the partition plate is welded with one side of the other plate without the partition plate. The cofferdam is convenient to construct, small in steel consumption and good in economic benefit.

Description

technical field [0001] The invention relates to the technical field of bridge foundation construction devices, in particular to a double-wall steel cofferdam with vertical hidden coffering purlins integrated with weir molds. Background technique [0002] With the vigorous development of bridge construction in China, the development of science and technology and the continuous accumulation of construction experience, the construction technology of underwater foundations is also constantly developing, from caisson and caisson technology to pile foundations, pipe column foundations, and steel sheet pile enclosures. The application of weir technology, etc., and the double-cap steel pipe pile foundation that appeared later, these technologies have solved some problems in underwater foundation construction. [0003] Double-wall steel cofferdam, as a new technology in bridge deep-water foundation construction, the role of bridge foundation double-wall steel cofferdam is as a water ...

AI Technical Summary

Problems solved by technology

[0008] Through practical application research, it is found that the double-wall steel cofferdams currently used in the construction of bridge deep water foundations have disadvantages such as inconvenient construction and many consumables.

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