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Reusable fabricated end seal structure for immersed tube tunnel

An immersed tube tunnel and prefabricated technology, applied in the field of construction engineering, can solve the problems of increasing project costs and prolonging the construction period, and achieve the effects of saving costs, improving construction efficiency, and good economic benefits

Active Publication Date: 2012-02-08
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when these two temporary end-sealing methods are removed, the end-sealing door needs to be cut and damaged, which not only increases the project cost, but also prolongs the construction period.
At present, there is no end-sealing technology that can realize modular assembly of end-sealing doors and can be recycled.

Method used

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  • Reusable fabricated end seal structure for immersed tube tunnel
  • Reusable fabricated end seal structure for immersed tube tunnel
  • Reusable fabricated end seal structure for immersed tube tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] see Figure 1-5 , in this embodiment, taking a reinforced concrete immersed tunnel as an example, the reusable fabricated end seal structure for the immersed tunnel is described in detail, wherein the cross-sectional layout of the pipe section 1 involved is a porous layout.

[0034] In this embodiment 1, the end seal structure is the same as the common steel beam / concrete mixed structure end seal door, and it is also necessary to set several vertical supporting beams 2 as the frame structure of the end seal door. Wherein, several main beam corbel embedded parts 4 are pre-embedded on the inner wall near the end surface of the pipe section 1 . The main beam corbel embedded parts 4 are bolted to the main beam corbel 3 to serve as a corbel structure for fixedly supporting the main beam 2 . The inner surfaces of the two ends of the supporting girder 2 and the corbel 3 of the girder are separated by adjustment blocks 14 and bolted by longitudinal adjustment bolts 9 . In the...

Embodiment 2

[0044] See attached Figure 6 , The basic arrangement of the end-sealing structure described in this embodiment is roughly the same as that in Embodiment 1. The difference is that the outer supporting side sealing member 6 and the embedded part 7 of the side sealing member are not selected as the supporting structure of the side sealing steel plate 13, but a cement step 12 is integrally cast on the inner wall of the pipe section 1, and the step of the cement step 12 The side sealing steel plate 13 is pre-embedded on the surface. Adopting this structure reduces the welding steps during installation of the side sealing steel plate 13, and further shortens the construction period.

Embodiment 3

[0046] See attached Figure 7 The difference between the end seal structure described in this embodiment and Embodiment 1 is that the supporting main beam 2 is not only arranged at the block joints of the encapsulation door panel 5, but also densely arranged in the middle of the encapsulation door panel 5, that is, except in the encapsulation door panel 5 There is a supporting main beam 2 at the joint of the door panel 5 , and a vertical supporting main beam 2 is provided on the pipe section 1 in the middle relative to the encapsulating door panel 5 . Correspondingly, a spacer rubber strip 11 is added on the inner surface of the package door panel 5 . The spacer rubber strip 11 is arranged in the ring-shaped sealing rubber strip 10, and its two ends are connected with the sealing rubber strip 10 and separated. After the package door panel 5 is installed, the spacer rubber strip 11 is located between the package door panel 5 and the installation facade of the supporting main b...

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Abstract

The invention relates to the field of construction engineering, in particular to a reusable fabricated end seal structure for an immersed tube tunnel. The end seal structure is mainly composed by combining at least one package door panel, support girders of the package door panel and an outer edge seal support component, wherein a plurality of support girders are sequentially arranged along the transverse section of a pipe and respectively provided with a vertical mounting surface; the outer edge seal support component is provided with an edge seal surface continuously arranged along the inner wall of the pipe; the edge seal surface and the vertical mounting surface of each sequentially-arranged support girder are located in the same plane and combined to form a mounting surface of the package door panel; a plurality of openings are formed between the vertical mounting surface and the edge seal surface; and at least one annular seal rubber strip is arranged on the package door panel, and the package door panel is bolted and fixed on the mounting surface, wherein the seal rubber strip is located and compressed between the package door panel and the mounting surface. The reusable fabricated end seal structure for the immersed tube tunnel has the advantages of greatly improving the construction efficiency and fulfilling the standardized construction.

Description

technical field [0001] The invention relates to technical means for tunnel construction in the field of construction engineering, in particular to a reusable assembled end seal structure for immersed tube tunnels. Background technique [0002] There are many construction methods and corresponding structural forms for underwater tunnels. In recent decades, there are mainly tunnels built by immersed tube method, shield tunneling method and mine method. Among them, immersed tube method is the abbreviation of prefabricated pipe section submerged method. It is a construction method for building tunnels under water. As a reliable construction method for tunnels crossing rivers and seas, the immersed tube method is attracting more and more attention. The construction sequence of the immersed tube method is to first make the tunnel pipe section (using steel plate and concrete or reinforced concrete), and then seal the two ends of the pipe section with temporary sealing walls, then ...

Claims

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Application Information

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IPC IPC(8): E02D29/073
Inventor 陈鸿陈正杰陈华宋振华奚程磊
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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