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Assembly-type down-penetration tunnel

A prefabricated, tunnel technology, applied in tunnels, tunnel linings, underground chambers, etc., to achieve the effect of simple assembly structure, high construction efficiency, and guaranteed wall structure strength and structural stability

Pending Publication Date: 2018-04-27
CHINA RAILWAY 23RD CONSTR BUREAU LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problems of how to split the tunnel and how to strengthen the structure of the joints to meet the structural strength and waterproof requirements of the tunnel when the large-sized underpass tunnel is to be prefabricated. An assembled underpass tunnel, which divides the whole tunnel into a split structure of floor, roof and vertical wall, and reasonably sets the shape of each prefabricated block, the assembly structure is simple, and the construction efficiency is high. The shear key structure ensures the structural strength and structural stability of the wall after splicing, and a waterproof layer can be added on the strengthening member to meet the waterproof requirements, which is suitable for the rapid construction of urban road networks.

Method used

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Embodiment 1

[0050] Such as Figure 1 to Figure 3 As shown, the prefabricated underpass tunnel of this embodiment includes a plurality of prefabricated blocks forming the tunnel section, the prefabricated blocks include a bottom plate 1, a top plate 2 and vertical walls, the bottom plate 1 is a W-shaped structure, and the The top plate 2 is an M-shaped structure corresponding to the bottom plate 1. The vertical wall includes a left vertical wall 3, a right vertical wall 5, and a middle vertical wall 4. The joint between the top plate 2 and the vertical wall is set as a concave-convex shear key. structure, and an assembled reinforcing member 6 is also provided at the seam. Further, the joint between the bottom plate 1 and the vertical wall is also provided with a shear key structure with concave and convex fit.

[0051] Further, the joint between the prefabricated blocks is defined as a horizontal joint, and the shear key structure includes a raised shear key and a groove adapted to the sh...

Embodiment 2

[0060] Such as Figure 1 to Figure 9 As shown, according to the prefabricated underpass tunnel described in Embodiment 1, this embodiment is designed for another problem of the prefabricated underpass tunnel. For the underground tunnel engineering with changing conditions, there are different degrees of deformation in each tunnel section Or subsidence is possible, so a deformation joint needs to be set every 20-30m along the length of the tunnel, and the deformation joint joint form of the underpass tunnel made by the commonly used cast-in-place method is not suitable for the prefabricated underpass tunnel, especially if there are The joints at the large arc corners of the tunnel are jointed, so the waterproofness of the deformation joints and the multi-directional deformation allowance design, the solution of this embodiment is: including the deformation joints set between the tunnel sections, and equipped with a deformation joint waterproof device , the deformation joint is ...

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Abstract

The invention discloses a construction technology of a down-penetration tunnel. The assembly-type down-penetration tunnel comprises multiple prefabricated separation blocks which form a tunnel segment, the separation blocks comprise baseplates, top plates and vertical walls, and the baseplates are of a W-shaped structure; the top plates and the baseplates are of a corresponding M-shaped structure,the vertical walls comprise left vertical walls, right vertical walls and middle vertical walls, shear key structures which are matched in a concave-convex mode are arranged on the splicing portionsof the top plates and the vertical walls, and splicing reinforcement components are further arranged in splicing seams. The whole tunnel is of a splitting structure which is composed of the baseplates, the top plates and the vertical walls, the shapes of all the prefabricated separation blocks are reasonably set, the splicing structure is simple, the construction efficiency is high, the shear keystructures which are matched in a concave-convex mode are arranged in the splicing seams, the structural strength and structural stability of the spliced wall are guaranteed, waterproof layers can beadditionally arranged on the reinforcement components, the waterproof requirement is met, and the technology meets the requirement of quick construction of city road nets.

Description

technical field [0001] The invention relates to an underpass tunnel construction technology, in particular to an assembled underpass tunnel. Background technique [0002] With the acceleration of urbanization and the maturity of urban road networks, the rapid transformation of old urban roads has become increasingly important. In the rapid transformation of roads, it is a more scientific road structure to set up underpass tunnels. It saves ground space and the overall effect is simple and beautiful, so it is widely used. Since the underpass tunnel reconstruction of the existing road is carried out in the existing urban road network, the construction period is very strict to reduce the disturbance to urban life. [0003] Most of the existing underpass tunnels are constructed in the form of formwork support and cast-in-place concrete, but there is a problem of long construction period, which has a long-term impact on urban traffic; referring to foreign underpass tunnel projec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/14E21D11/38
CPCE21D9/00E21D9/14E21D11/38E21D11/385
Inventor 魏运鸿田宝华毕小毛赵通孙春平刘延龙谭斌翟勇喻丕金钟健
Owner CHINA RAILWAY 23RD CONSTR BUREAU LTD
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