Bending type immersed tube anti-deformation structure and construction method

Abstract

The invention discloses a bending type immersed tube anti-deformation structure and a construction method, and belongs to the field of immersed tubes. The bending type immersed tube anti-deformation structure comprises an immersed tube body, wherein the immersed tube body comprises a first tube section and a second tube section; an included angle between the first tube section and the second tubesection is an acute angle; distance regulating mechanisms sleeve the first tube section and the second tube section, and can move along the axis of the first tube section and the axis of the second tube section; a counterweight floating box is connected on each distance regulating mechanism, and an included angle among the counterweight floating box, the first tube section and the second tube section is adjustable. Buoyancy force of the counterweight floating boxes is perpendicular to the planes of the counterweight floating boxes, so that the positions, in the immersed tube body, of the counterweight floating boxes are changed, and the included angle among the counterweight floating boxes and the immersed tube body is changed, and therefore, the angle while the immersed tube is immersed can be changed, and bending and deformation are not liable to occur while stress is uneven during immersing.

Description

technical field [0001] The invention relates to the field of immersed tubes, in particular to a bending-type immersed tube anti-deformation structure and a construction method. Background technique [0002] The floating box lifting and sinking method is a relatively new pipe section sinking method. Usually, 4 square buoyant tanks are placed above the pipe section, and the pipe section is directly hung by slings. The buoyant tanks are divided into two groups, the two buoyant tanks in each group are connected as a whole with steel trusses, and each group of buoyant tanks is positioned with anchor cables. The hoisting winch and the positioning winch of the floating tank are installed on the top of the floating tank. The positioning of the pipe section must be pulled by anchor cables at the left, right, front and back, and the positioning hoist is set on the top of the positioning tower. The main feature of this sinking method is that the equipment is simple, and it is suitabl...

AI Technical Summary

Problems solved by technology

[0004] When the immersed tube is installed, in order to better connect the place where the water area meets the land, the immersed tube at this position needs to be made into a bent integrated pipe, and at the same time, the outer wall of the pipe will be covered with a coating for rust prevention. The bent immersed tube is prone to deformation during installation, making the coating easy to fall off, resulting in damage to the quality of the immersed tube

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