Prestressed support for shield tunnel supporting and using method thereof

A technology for shield tunnels and shield tunnel segments, applied in the field of prestressed supports for shield tunnel support, can solve problems such as inability to fully protect existing tunnel deformation, improve support accuracy and safety, and improve overall Sexuality and stability, the effect of resistance to deformation

Pending Publication Date: 2022-04-01
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the prior art, the present invention provides a prestressed support for shield tunnel support and its use method to solve the problem of reinforcement when passing through the existing tunnel in the prior art. The technical problem that the deformation of the existing tunnel cannot be fully protected

Method used

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  • Prestressed support for shield tunnel supporting and using method thereof
  • Prestressed support for shield tunnel supporting and using method thereof

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Embodiment

[0048] as attached Figure 1-2 As shown, the present invention provides a prestressed bracket for shield tunnel support, the prestressed brackets are evenly spaced along the axis of the shield tunnel to be supported, and perpendicular to the axis of the shield tunnel to be supported The prestressed support includes a central support 1, a main leg 2, a buttress 3, a diagonal brace 4, a diagonal brace leg 5, a first servo hydraulic jack 6, a shoe brace 7, a tie brace 8, and a numerically controlled pump station 9 . The ground monitoring system 10 and the second servo hydraulic jack 11.

[0049] The central support 1 is a cross-shaped steel frame structure, and the four main legs 2 are respectively arranged at the ends of the central support 1; the central support 1 includes four rigid supports, and the four rigid supports are spliced ​​to form a cross-shaped steel frame structure ; There is a triangular patch between two adjacent rigid supports, one end of the triangular patch ...

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Abstract

The invention discloses a prestressed support for supporting a shield tunnel and a using method of the prestressed support. The prestressed support comprises a center support and four main supporting legs. The center support is of a cross-shaped steel frame structure, and the four main supporting legs are arranged at the ends of the center support respectively. One end of the main supporting leg is connected with the central bracket, and the other end is in close contact with the inner wall of the shield tunnel segment; wherein buttresses are arranged between two adjacent main supporting legs and the shield tunnel segment, and first servo hydraulic jacks are arranged between the other two main supporting legs and the shield tunnel segment; an inclined strut is further arranged between every two connected main supporting legs, an inclined strut supporting leg is arranged at the midpoint of each inclined strut, one end of each inclined strut supporting leg is perpendicularly fixed to the corresponding inclined strut, and the other end of each inclined strut supporting leg is in close contact with the inner wall of the shield tunnel segment; second servo hydraulic jacks are further arranged between the inclined supporting legs and the inner wall of the shield tunnel segment in a tight contact mode. By arranging the servo hydraulic jack, prestress is applied to the shield tunnel segment, and shield tunnel deformation is effectively resisted.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a prestressed bracket used for shield tunnel support and a usage method thereof. Background technique [0002] With the increasing shortage of urban land and the gradual increase of urban traffic pressure, in order to solve traffic problems, in the construction of subways and urban rails, the construction of the shield method has been rapidly promoted and applied due to its advantages of speed, environmental protection, safety and high quality. It has become the preferred construction method for tunnel construction; however, with the continuous increase of construction lines, it is inevitable that the lines will intersect; at the same time, due to the different construction time or management of each line, it is often impossible to construct at the intersection at the same time, and there are new constructions. The problem that the line passes under o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/04E21D23/16E21F17/18
Inventor 周东波苏亚张钰杭张钢龙吕可人王蓉肖男苏卫杰苏珲白亚锋
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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