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In-line water tightness testing device for elastic sealing gasket of shield tunnel

An elastic sealing gasket and shield tunneling technology, which is applied in the direction of using liquid/vacuum to measure liquid tightness and applying stable tension/pressure to test the strength of materials, etc., can solve the difficult and unsatisfactory verification of the waterproof ability of sealing gaskets Issues such as the requirements for the quality inspection of shield tunnel gasket quality, to achieve the effect of an accurate evaluation system

Inactive Publication Date: 2010-12-29
TONGJI UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is difficult to verify the waterproof ability of the gasket within the allowable range of the assembly accuracy of the tunnel; the existing devices cannot meet the quality inspection requirements of the shield tunnel gasket

Method used

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  • In-line water tightness testing device for elastic sealing gasket of shield tunnel
  • In-line water tightness testing device for elastic sealing gasket of shield tunnel
  • In-line water tightness testing device for elastic sealing gasket of shield tunnel

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Embodiment Construction

[0026] The features of the present invention and other related features will be further described in detail below in conjunction with the accompanying drawings through embodiments, so as to facilitate the understanding of those skilled in the art:

[0027] attached Figure 1-12 The middle marks 1-15 represent segment 1, elastic gasket 2, circular profile cover plate 3, rectangular profile cover plate 4, gasket 5, limit plate bolt hole 6, leg 7, lower cover plate 8, Rectangular groove 9, bolt (hole) 10, water inlet hole 11, upper cover plate 12, air outlet hole 13, water pressure gauge screw hole 14, limit plate 15.

[0028] During the design process of the gasket, there is no suitable theoretical guidance. Therefore, it belongs to empirical design, and in the production process, its production quality can only be controlled by simple calipers and hardness testers for shape and hardness. It is impossible to actually simulate the waterproof actual situation under its working s...

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Abstract

The invention belongs to the field of tunnel engineering, and in particular relates to an in-line water tightness testing device for an elastic sealing gasket of a shield tunnel, which simulates the waterproof capacity of a waterproof sealing gasket of segment joints of the shield tunnel in a straight joint erecting state. The device of the invention comprises two abutted rectangular cover plates, wherein an air outlet hole and a water inlet hole are arranged on the cover plates; corresponding rectangular grooves are arranged in the central positions of the abutted surfaces of the two cover plates; the two cover plates are fastened and abutted by bolts distributed on the peripheries of the cover plates; and a spacing plate is installed laterally on the cover plate. The invention has the advantages that the device of the invention can precisely verify the waterproof capacity of the elastic sealing gasket under the conditions of different opening value of segments and different dislocation, thus the evaluating system of the waterproof capacity is more precise.

Description

technical field [0001] The invention belongs to the field of tunnel engineering, and in particular refers to a "line-shaped" watertightness testing device for shield tunnel elastic gaskets that simulates the waterproof ability of shield tunnel segment joint waterproof gaskets in the joint-through assembled state. Background technique [0002] At present, shield tunnels are mostly lined with reinforced concrete segments, and for waterproofing, grooves are usually arranged on the outside of the segments, and elastic gaskets are embedded in the grooves. During the segment assembly process, the bolts between the segments are used to compress the elastic gasket to resist the external water pressure. [0003] Since the joint waterproofing of the existing segment tunnels mostly adopts the method of elastic gaskets, and because its design is still in the empirical design stage, its waterproof effect cannot be verified through calculation, so it is urgent to develop a device to verif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/02G01N3/12
Inventor 刘建国余儿忠周顺华海明雷
Owner TONGJI UNIV
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