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Staggered slab steel lining reinforcing structure suitable for subway tunnel segment slab staggering disease

A technology for tunnel segment and reinforcement structure, which is applied in the direction of tunnel lining, tunnel, shaft lining, etc., can solve the damaged repair layer, the damage of the shield tunnel concrete segment, the comprehensive effect is difficult to achieve the purpose of steel lining reinforcement, etc. problem, to achieve the effect of strengthening the reinforcement effect

Active Publication Date: 2022-03-08
北京城建重工桥隧工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 3. With the continuous development of urban construction, it is often encountered in the vicinity of the area above the original subway tunnel, the construction of urban buildings (house construction, municipal bridges) reconstruction and expansion projects and the corresponding supporting foundation pits, pile foundations and other foundation construction, so that The external load borne by the shield tunnel changes greatly, and similar load changes will also cause a certain degree of damage to the concrete segments of the shield tunnel
Since the repair layer cannot be fully integrated with the segment concrete on this side, what's more, when installing the seam steel lining, it is also necessary to drill the anchor bolt holes on the repair layer of the filling material industry, it will also damage the repair layer of the filling material on this side, so that the comprehensive force effect of the reinforcement and reinforcement of the seam-riding steel lining will be greatly reduced
[0014] It can be seen that for the amount of misalignment exceeding 20 mm, especially if the amount of misalignment exceeds 50 mm, the implementation of the current general process will make it difficult to achieve the purpose of steel lining reinforcement after the comprehensive effect of reinforcement.

Method used

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  • Staggered slab steel lining reinforcing structure suitable for subway tunnel segment slab staggering disease
  • Staggered slab steel lining reinforcing structure suitable for subway tunnel segment slab staggering disease
  • Staggered slab steel lining reinforcing structure suitable for subway tunnel segment slab staggering disease

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Effect test

Embodiment 1

[0059] This embodiment provides a staggered steel lining reinforcement structure installed in the basic installation area. The basic installation area refers to the area where the amount of staggering -t≧e≧t (t on the upper side of e=0 is a positive value, and it is negative anyway). For the areas that meet the above conditions, the staggering of this embodiment is adopted. Steel lined reinforcement structure for reinforcement. The width of the arc plate in the basic installation area is different. The width of the arc plate of the steel lining far from the center of the tunnel is w, and the width of the arc plate of the steel lining near the center of the tunnel is w+t.

[0060] Such as Figure 2-5 As shown, the reinforcement structure of the staggered steel lining in this embodiment includes a circular arc plate 2, a circular arc plate 2 3 and a crescent plate 1, and the circular arc plate 2 and circular arc plate 2 3 are respectively installed on the staggered ring On the...

Embodiment 2

[0065] This embodiment provides a reinforcement structure with staggered steel lining, such as Figure 7-14 Shown, on the basis of embodiment 1, increase add Reinforced sections in the transition zone. Because there is such an installation area between the two basic installation areas, the numerical value e of its misalignment amount is between t and 0 or the numerical value e of the misalignment amount is an area between 0 and -t (its arc length is set to L), namely: e=0~±t. It should be noted that the amount of side error on the horizontal line where the amount of error e=0 is positive (+), otherwise it is negative (-). It is called the transitional installation area.

[0066] The reinforcement part of the transition area includes a transitional steel ring plate A-4 and a transitional steel ring plate A-5, and the transitional steel ring plate A-4 is respectively butted with two circular arc plates-2 on the side of the ring seam of the staggered platform, so The trans...

Embodiment 3

[0072] This embodiment provides a staggered steel lining reinforcement structure. On the basis of Embodiment 1, the reinforcement part of the transition area different from Embodiment 2 is added, including the transition steel ring plate B-6, the transition steel ring plate B-7 , transition steel ring plate B38, transition steel ring plate B49, the transition steel ring plate B38 and transition steel ring plate B38 are welded butt jointed and installed on two circular arcs on one side of the staggered ring seam Between plates 1 and 2, transition steel ring plate B 2 7 and transition steel ring plate B 4 9 are welded butt jointed and installed between two circular arc plates 2 and 3 on the side of the staggered ring seam; transition steel ring plate B 1 6 and the transition steel ring plate B38 are respectively welded and fixed with two arc plates 12, the transition steel ring plate B27 and the transition steel ring plate B49 are respectively welded and fixed with the two arc pl...

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Abstract

The invention discloses a slab staggering steel lining reinforcing structure suitable for subway tunnel segment slab staggering diseases, which comprises an arc plate I, an arc plate II, a crescent plate and a bracket (if the crescent plate exists), and is characterized in that the arc plate I and the arc plate II are respectively mounted on concrete segments on two sides of a slab staggering circular seam; the two sides of the crescent plate are welded and fixed to the opposite sides of the first arc plate and the second arc plate correspondingly. The structural slab staggering of the slab staggering steel lining is matched with the slab staggering of the duct piece, and a steel lining reinforcing structure with a matched structure is constructed in combination with the structure of slab staggering diseases, so that the steel lining reinforcing structure and the slab staggering diseases correspond to each other, are matched with each other, are customized and are tightly jointed, and the reinforcing effect can be enhanced.

Description

technical field [0001] The invention relates to the technical field of subway tunnel construction, in particular to a staggered steel inner lining reinforcement structure suitable for subway tunnel segment staggered disease. Background technique [0002] According to the common disease characteristics of subway shield tunnels, the main diseases of tunnels are divided into three categories: segment leakage, damage and deformation. Tunnel segment dislocation disease is a serious tunnel disease in the category of deformation diseases. If the misalignment of tunnel segments exceeds the limit, this tunnel disease will seriously affect the structural safety of the tunnel and the operation safety of the subway. Therefore, the wrong platform is a key factor affecting the quality of the tunnel. [0003] The joints between the concrete segments of the shield tunnel should be smooth under normal conditions. And the gap between the assembly seams is uniform and basically the same eve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/08E21D11/15
CPCE21D11/083E21D11/15
Inventor 李艳华申世平李少华
Owner 北京城建重工桥隧工程技术有限公司