Annular open caisson structure

Abstract

The invention discloses an annular open caisson structure which comprises an open caisson body. The open caisson body comprises an outer ring caisson wall and an inner ring caisson wall, and a plurality of partition walls are arranged between the outer ring caisson wall and the inner ring caisson wall. An annular space formed between the outer ring caisson wall and the inner ring caisson wall is divided into a plurality of independent fan-shaped cavities by the partition walls, and a fan-shaped caisson hole is formed in each fan-shaped cavity. An open caisson adopts an annular cross section, the water flow adaptability is good, the local scour depth is small, and the water flow force and wave force borne by the structure are small. Moreover, the fan-shaped caisson holes are formed in the fan-shaped cavities, so the solid area of the partition walls of the open caisson can be reduced, and taking soil evenly in the sinking process of the open caisson and assisting the sinking of the opencaisson are facilitated.

Description

technical field [0001] The invention belongs to the technical field of the caisson structure field, and in particular relates to an annular caisson structure. Background technique [0002] With the rapid development of the national economy, the demand for traffic construction has soared, and more and more large bridges are being built and are about to be built at home and abroad, and with the emergence of cross-sea bridges, the spans of bridges are getting larger and larger. Most of these long and large bridges are built on deep and fast-flowing rivers or seas with harsh environments. They often encounter problems such as deep water and heavy erosion, which are very unfavorable for bridge construction, and the difficulty of foundation construction is even greater. The construction cost of the bridge substructure generally accounts for 30% of the investment of the whole bridge, which is an important factor affecting the economy of the bridge. At present, the commonly used ca...

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Problems solved by technology

[0003] (1) The cross section is rectangular and circular, which is a blunt cross section, with poor water flow adaptability, large local scour depth, and large water flow force and wave force on the structure

[0004] (2) The determinant arrangement of the wellbore in the section is a non-centrosymmetric structure, which is prone to the problem that the plane torsion is difficult to correct during the subsidence

Although the above-mentioned structure avoids the problem of too large foundation size and buried depth caused by simply using tube test foundations and pile foundations, the caisson structure is a cylindrical one-piece structure, which has poor water flow adaptability, large local scour depth, and impact resistance of the structure poor ability

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