Wedge-type deviation-correcting and fine-adjusting system at the bottom of immersed tube and its adjustment process

Abstract

The invention relates to a wedge type bottom-end deviation fine-rectifying system for an immersed pipe and a rectifying process of the wedge type bottom-end deviation fine-rectifying system. The wedge type bottom-end deviation fine-rectifying system comprises a control system and a mechanical system. The mechanical system comprises a hydraulic pump station, a weight box and a rail. A horizontal positioning mechanism is arranged on the rail and comprises a bottom plate and a horizontal positioning jack. A slide groove and a horizontal transversely-moving jack are mounted on the bottom plate, a jacking deviation rectifying box is disposed in the slide groove, and a perpendicular jacking mechanism is arranged in the jacking deviation rectifying box and comprises a jacking jack, a lower wedge and an upper wedge. One end of the jacking jack is fixed on the jacking deviation rectifying box, the other end of the jacking jack is connected with the lower wedge, and the upper wedge is mounted on the lower wedge and can move upwards perpendicularly along with the lower wedge. The wedge type bottom-end deviation fine-rectifying system is simple in structure, can automatically jack and rectify deviation of the immersed pipe to be mounted by the aid of the jacking jack, the upper wedge, the lower wedge and the horizontal transversely-moving jack, is timesaving and laborsaving and accurate in mounting and is slightly affected by natural conditions such as waves, water flow and wind, and high in stability.

Description

technical field [0001] The invention relates to the construction technology of immersed tube tunnels, in particular to a system for adjusting the bottom end of immersed tubes during the construction process of immersed tube tunnels and an adjusting process thereof. Background technique [0002] The immersed tube method is a construction method for building tunnels under water. Immersed tube tunnel is an underwater tunnel built by floating several prefabricated sections to the sea surface (river surface) site, and sinking and installing them one by one in the dredged foundation trench. At present, in the construction process of immersed tube tunnels, in order to improve the smoothness of the bottom surface of the trench, most of the built underwater tunnels adopt the method of leveling. Among them, the padding method mostly used in the early stage is a first-laying method in which sand and gravel are laid as a cushion before the pipe section is laid down. The guide rails se...

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Problems solved by technology

[0004] The invention aims at the above-mentioned problems such as large thrust, difficult control, time-consuming and labor-intensive when the immersed tube is installed under the influence of waves, water flow, wind and other natural conditions during the construction process of the existing immersed tube tunnel, and provides a wedge-type deviation correction at the bottom of the immersed tube The fine-tuning system and its adjustment process, the system is located at the bottom of the tail of the immersed tube to be installed when it is used, and has the function of self-jacking and rectifying the deflection, which is suitable for rectifying the deflection of the immersed tube during the construction of the immersed tube tunnel

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