Waterproof structure for shield-method tunnel anti-floating anchor rod node

A technology of anti-floating bolt and shield method, applied in tunnels, tunnel linings, shaft linings, etc., can solve problems such as inability to be directly applicable, and achieve the effects of simple structure, meeting waterproof requirements, and easy operation.
CN102748037AActive Publication Date: 2012-10-24SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
Publication Date
2012-10-24

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Abstract

The invention discloses a waterproof structure for a shield-method tunnel anti-floating anchor rod node, which comprises a steel pipe body with a built-in seal end plate, and a water-seal steel ring arranged on the outer side surface of the steel pipe body, wherein the seal end plate is provided with an anchor rod hole; the seal end plate is welded inside the steel pipe body in a seal mode; the anchor rod penetrating through the anchor rod hole is welded with the seal end plate in a seal mode; the steel pipe body comprises a first steel pipe and a second steel pipe which are arranged coaxially; the diameter of the second steel pipe is greater than that of the first steel pipe; and one end of the second steel pipe is welded and fixed with one end of the first steel pipe through a connecting steel ring. The invention has the advantage of simple structure, is easy to operate; and compared with other waterproof devices, the invention is simpler to operate and has better waterproof effect in both pipe piece production and anchor rod construction.
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Description

technical field

[0001] The invention relates to a waterproof structure for underground engineering, in particular to a waterproof structure for anti-floating anchor rod joints of shield tunnels. Background technique

[0002] With the development of science and technology, a shallow buried shield tunneling method has been deeply researched and applied at home and abroad. Shallow-buried shield tunnels have a more prominent anti-floating problem due to their shallow burial depth and thin covering soil. In the use stage, the anti-floating measures of shallow-buried shield tunnels mostly use anchor rods to resist floating. However, there is no good solution to the waterproof problem of anchor rod anti-floating nodes.

[0003] Chinese patent CN200820187592.2 improves the original anti-floating joints of ordinary underground structures, and proposes a combined anti-floating anchor joint waterproof structure. However, the shallow buried shield tunnel structure is assembled from pr...

Claims

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