Shield tunnel elastic sealing gasket "T-shaped" water-tightness inspection device
A technology of elastic sealing gasket and inspection device, which is applied in the direction of using liquid/vacuum degree for liquid tightness measurement, etc., to achieve the effects of more boundary conditions, lower processing costs, and simpler equipment
Active Publication Date: 2015-10-07
NANJING HYDRAULIC RES INST
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However, the above test method only simulates the sealing effect when the elastic gasket is attached to the steel cover plate, which is different from the sealing effect when the elastic gasket is attached to the concrete in actual working conditions.
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[0017] Hereinafter, the present invention will be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the present invention are marked. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0018] For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature relative to another element or feature shown in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, e...
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Abstract
The invention discloses a shield tunnel elastic sealing gasket "T-shaped" water-tightness inspection device. The inspection device comprises one rigid ribbed plate and six rigid flat plates. The rigid ribbed plate is composed of a main plate and rib plates. The main plate is arranged to be "T-shaped". The rib plates are symmetrically arranged at the two sides of the waist parts of the main plate respectively. The shield tunnel elastic sealing gasket "T-shaped" water-tightness inspection device directly fit with concrete is used so that limitation that only penetration performance of the contact surface of an elastic sealing gasket and a steel molding plate is inspected in the existing test methods is extended, and experimental study work on penetration performance of the contact surface of the elastic sealing gasket and concrete can be carried out. Besides, the inspection device can be matched with the widely used common concrete anti-permeability instruments at present so that processing cost is reduced.
Description
technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a testing device for testing the "T-shaped" watertightness of a shield tunnel elastic gasket directly bonded to concrete. Background technique [0002] There are a large number of joints between the shield tunnel lining segments. At present, the expected waterproof effect is mainly achieved by pasting and extruding EPDM elastic gaskets into the prefabricated grooves of the segments. At present, the waterproof effect is mostly verified by simulation or calculation through experiments. [0003] In the tests done by domestic scholars, the method of replacing concrete grooves with steel grooves is basically adopted, and the boundary and friction conditions of the gasket are difficult to be satisfied. The current national standard "Polymer Waterproof Materials Part 4: Rubber Gaskets for Shield Tunnel Segments" (GB 18173.4-2010) discusses the water pressure simulation tes...
Claims
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Inventor 陆采荣刘伟宝梅国兴王珩戈雪良杨虎
Owner NANJING HYDRAULIC RES INST