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Shield tunnel segment lining-anchor rod structure system

A shield tunnel segment and anchor rod technology, which is applied in the direction of tunnel lining, tunnel, shaft lining, etc., can solve the problems of low longitudinal deformation resistance, low longitudinal rigidity, easy floating, and tunnel deformation, so as to reduce the unfavorable soil The effect of properties, enhancing the longitudinal deformation resistance, reducing the effect of sinking or floating

Inactive Publication Date: 2009-03-25
SHANGHAI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The main disadvantages of this structure are as follows: First, the stiffness of the connection between segments is much smaller than that of the segment itself, resulting in the longitudinal deformation resistance of the shield tunnel structure—the longitudinal stiffness is not high, and the shield tunnel is prone to deformation in weak strata. Subsidence occurs, or floating occurs easily when the groundwater level changes; second, the segment lining structure of the shield tunnel is greatly affected by the properties of the soil near the tunnel, especially the soil of the underlying layer. When the properties of these soils are bad, It is bound to have an adverse effect on the stability of the tunnel; the third is that the stiffness of the segment lining structure of the shield tunnel cannot be adjusted according to the locality. Where the soil layer changes, the tunnel is prone to deformation

Method used

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  • Shield tunnel segment lining-anchor rod structure system
  • Shield tunnel segment lining-anchor rod structure system
  • Shield tunnel segment lining-anchor rod structure system

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Embodiment Construction

[0024] Preferred embodiments of the present invention are described in detail as follows in conjunction with accompanying drawings:

[0025] see figure 1 , the shield tunnel segment lining-anchor structure system, including the segment lining 4 and the anchor rod 2 built by the segment 1, the reserved anchor hole 3 is left on the segment 1, and the anchor rod 2 passes through the anchor hole 3 Drive into the soil, and screw the bolts at the end of the anchor rod 2 with nuts at the inner side of the anchor hole 3 to establish an effective connection between the segment 1 and the anchor rod 2 .

[0026] see figure 2 , a typical combination of this embodiment is: only one anchor rod 2 passes through one anchor hole 3 on a piece of segment 1 .

[0027] see image 3 , Another typical combination of this embodiment is: three anchor rods 2 pass through one anchor hole 3 on a segment 1 .

[0028] see Figure 4 , the third typical combination of this embodiment is: an anchor rod ...

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Abstract

The invention discloses a shield tunnel segment lining-anchor rod structural system. Anchor rods are driven around a shield tunnel segment lining, and the effective connection between the anchor rods and the segment lining is established through steel bolts. The shield tunnel segment lining-anchor rod structural system introduces the anchorage function of the anchor rods into a shield tunnel segment lining structure, which can reduce the settlement or the floatation of tunnels, lighten the influence of recessive characters of surrounding soil bodies, strengthen the rigidity of adverse positions such as corners of the tunnels, stratum catastrophe positions and so on, and improve the whole and local stability of tunnel structures.

Description

technical field [0001] The invention relates to a structural system in which the segment lining of a shield tunnel and an anchor rod work together, and belongs to the field of underground building structures. Background technique [0002] With the development of social economy, various large-scale infrastructure constructions are constantly being carried out. In the construction of tunnels such as railways, highways, water conservancy, municipal administration, rail transit, and magnetic levitation, tunnel shield technology has been more and more widely used in such projects due to its unique advantages. [0003] The existing shield tunnel structure mainly refers to the reinforced concrete segment lining structure. In this structure, several arc-shaped segments are first connected into a segment ring through steel bolts, and then the segment ring is connected to the completed segment lining structure. , the tubular segment lining structure completed behind it is also conti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/04E21D21/00
Inventor 黄超张孟喜辛志明钟薏崔玮
Owner SHANGHAI UNIV
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