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Self-weight-adjustable immersed tube of reinforced concrete embedded tube and design and construction method

A technology of reinforced concrete and construction method, applied in caisson, artificial island, water conservancy project and other directions, can solve the problems of difficult construction of navigation and installation, difficult optimization of structural design, difficulty in self-weight adjustment, etc. The effect of time, reducing construction difficulty and convenient construction

Pending Publication Date: 2021-12-31
CCCC FOURTH HARBOR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to overcome the disadvantages of the above-mentioned reinforced concrete immersed tubes in the prior art, which are high in height, heavy in structure, difficult to optimize in structural design, difficult in self-weight adjustment, and difficult to navigate and install. The self-weight adjustable immersed pipe of reinforced concrete buried pipe and its design and construction method can adjust the self-weight of the immersed pipe structure, thereby reducing the requirement for navigable water depth, facilitating navigation, reducing the requirement for the depth of foundation groove, and reducing the requirement for immersed pipe. Tunnel construction is difficult, and construction is more convenient

Method used

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  • Self-weight-adjustable immersed tube of reinforced concrete embedded tube and design and construction method
  • Self-weight-adjustable immersed tube of reinforced concrete embedded tube and design and construction method
  • Self-weight-adjustable immersed tube of reinforced concrete embedded tube and design and construction method

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Effect test

Embodiment 1

[0062] Please refer to figure 1 , this embodiment provides a reinforced concrete buried pipe with adjustable self-weight immersed tube, including an immersed tube structure body, and a pipeline 5 arranged inside the concrete of the immersed tube structure body, and the immersed tube structure body refers to an entity formed by pouring reinforced concrete part, the immersed tube structure body includes a concrete structure top plate 1, a concrete structure bottom plate 2, a concrete structure side wall 3, and a concrete structure middle wall 4, wherein, the above-mentioned concrete structure components are all formed by binding steel bars and pouring concrete, and the built-in The pipe is provided with an inlet and outlet pipe 54 connecting the inside of the pipe 5 to the outside of the immersed tube structure body. The inlet and outlet pipe 54 is used to pour ballast fluid into the pipe 5. The pipe 5 includes a first built-in pipe 51, a second built-in pipe 52, and a connecting...

Embodiment 2

[0068] This embodiment is roughly the same as Embodiment 1, the differences are: the size of the immersed tube structure body, the third connecting pipe 533 is eliminated in the pipe 5, the transverse through pipe 55 is provided in the pipe 5, the material and size of the pipe 5, etc.

[0069] Please refer to Figure 4 and Figure 5 , this embodiment uses multiple groups of pipes 5, which are the same as in Embodiment 1, and also set up transverse through pipes 55 between the multiple groups of pipes 5, the spacing between adjacent groups of pipes 5 is 800mm, and the width of the transverse through pipes 55 Both ends are used to connect adjacent groups of pipes 5, and a plurality of transverse through pipes 55 can be connected between adjacent groups of pipes 5, and the connection position is not limited to a specific part of the pipes 5, such as the first built-in pipe 51 can be connected , the second built-in pipe 52, the first connecting pipe 531 and the second connecting ...

Embodiment 3

[0072] This embodiment is substantially the same as Embodiment 1, except for the arrangement of the transverse through-pipe 55 , the structure, material and size of the pipe 5 , and the arrangement of the inlet and outlet pipes 54 .

[0073] Please refer to Image 6 and Figure 7 , in this embodiment, the transverse through pipes 55 are connected between each adjacent two groups of pipes 5, and similarly, the two ends of the transverse through pipes 55 are respectively connected to the first built-in pipe 51 of the adjacent group or the second built-in pipe of the adjacent group. Pipe 52, a total of three transverse through pipes 55 are arranged to connect the first built-in pipe 51, and three transverse through pipes 55 are connected to the second built-in pipe 52, so that every two groups of pipes 5 and six through pipes together constitute a perfusion unit. The structure is the same as that of the first embodiment, and the circuit composed of the first built-in pipe 51 , t...

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Abstract

The invention discloses a self-weight-adjustable immersed tube of a reinforced concrete embedded tube and a design and construction method. The self-weight-adjustable immersed tube is applied to the technical field of immersed tube tunnels. The immersed tube structure comprises an immersed tube structure body and pipelines arranged in the immersed tube structure body, and the pipelines are used for pouring ballast fluid into the immersed tube structure body. The design method comprises the steps that B1, the number of groups of the pipelines is selected, and the weight range of the immersed tube structure is determined and adjusted; B2, the ballast fluid is selected, and the weight range of the immersed tube structure is determined and adjusted; and B3, the ballast fluid is poured into the immersed tube structure body through the selected groups of pipelines, and the self weight of the immersed tube structure is adjusted. The construction method comprises the steps that S1-S3, the immersed tube structure is formed through pouring; and S4-S7, navigation and installation construction are conducted. According to the self-weight-adjustable immersed tube of the reinforced concrete embedded tube and the design and construction method, the self weight in the immersed tube structure can be adjusted, the draft of the immersed tube structure is automatically adjusted, navigation is convenient, the requirement for the navigation water depth is lowered, the requirement for the foundation trench depth is lowered, the construction difficulty of the immersed tube tunnel is also lowered, and construction is more convenient.

Description

technical field [0001] The invention relates to the technical field of immersed tube tunnels, in particular to a reinforced concrete inner buried tube self-weight adjustable immersed tube and a design and construction method. Background technique [0002] There are two main principles for the section of the immersed tube structure to meet the functions of opening to traffic: [0003] 1. During installation, in order to adapt to the performance of the ship used for sinking and docking of immersed tubes, it is required that the self-weight and buoyancy are basically close, which is too strict for the bulk density of concrete. The current design of immersed tubes is to meet installation requirements rather than functional requirements. , Adjust the section of the immersed tube (at the height of the immersed tube) to force its dead weight and external volume (buoyancy) to reach a critical state of equilibrium. [0004] 2. After installation, in order to meet the various working...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/073E02D23/00E02D23/08
CPCE02D29/073E02D23/00E02D23/08
Inventor 刘荣岗梁杰忠陈伟彬李汉渤朱成张涛方钊佳刘轩源黄文慧吴海森史朝杰尹春辉曾可欣陈健斌
Owner CCCC FOURTH HARBOR ENG CO LTD
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