Underwater construction device and construction method for piers and caps of cross-sea bridges

Abstract

The invention discloses an underwater construction device and construction method for pier columns and caps of cross-sea bridges, belonging to the technical field of bridge construction. The device of the invention includes: a floating body on which a cofferdam assembly is loaded, and further includes: A positioning component that limits the range of movement of the floating body. The positioning component includes: a counterweight, which is connected to the floating body through a rigid pipe, wherein the rigid pipe can move up and down relative to the floating body, and at least two variable The deformable part has a large volume, and the middle part of the deformable part has an inner cavity, and the surface of the rigid pipe part located in the inner cavity is provided with openings. The invention realizes the construction of pile foundations in deep-water torrential rivers or sea areas. The pile foundation construction process is not affected by changes in water level and flow velocity, and the pile foundation construction speed is high and the quality is high.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to an underwater construction device and construction method for pier columns and caps of cross-sea bridges. Background technique [0002] At present, our country has been able to proficiently build long, long-span, deep-water foundation bridges. However, in the current construction process of bridge piers in our country, especially in the construction of deep-water rapids rivers or sea areas, there are still certain problems, because bridge piers Most of the construction is carried out above the water surface. The water level of some rivers changes greatly with the seasons, or the water level changes due to other reasons (such as: downstream dam water storage), and the water level of some sea areas also changes greatly during certain periods, resulting in The bridge piers under construction are submerged, which will stop the construction of the bridge piers,...

AI Technical Summary

Problems solved by technology

[0002] At present, our country has been able to proficiently build long, long-span, deep-water foundation bridges. However, in the current construction process of bridge piers in our country, especially in the construction of deep-water rapids rivers or sea areas, there are still certain problems, because bridge piers Most of the construction is carried out above the water surface. The water level of some rivers changes greatly with the seasons, or the water level changes due to other reasons (such as: downstream dam water storage), and the water level of some sea areas also changes greatly during certain periods, resulting in The bridge piers under construction are submerged, which will stop the construction of the bridge piers, and the construction of the bridge piers can only be carried out after the water level recedes. If some special circumstances cause the water level to recede, the bridge construction can only be abandoned or rebuilt, causing huge damage. Investment loss, at the same time, when constructing in deep-water rapids rivers or sea areas, there will be certain water flow impact on construction equipment, resulting in low quality pile foundations

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