Shield segment bending performance test method

Abstract

The invention discloses a shield segment bending performance test method, and relates to the technical field of shield segments. The system according to the method comprises a workbench, a shield segment body and an anti-bending test mechanism. A supporting base mechanism is installed below the workbench. Mounting bases are mounted on the two sides of the upper portion of the workbench. A slidingblock is fixed at the lower end of each mounting base; a sliding groove is formed in the outer side of the lower portion of the sliding block. Limiting plates are fixed to the left and right ends of the sliding groove. Positioning mechanisms are mounted on the front side and the rear side of the mounting base; the shield segment body is arranged above the mounting base, fixing mechanisms are mounted on the outer sides of the two ends of the bottom of the shield segment body, stand columns are fixed to the upper portions of the two ends of the workbench, a top plate is mounted above the stand columns, the anti-bending test mechanism is mounted below the top plate, and deviation prevention mechanisms are arranged on the two sides of the anti-bending test mechanism. The shield segment bendingperformance test method has the beneficial effect that the shield segment body can be conveniently positioned and fixed through the arrangement of the positioning mechanisms and the fixing mechanisms.

Description

technical field [0001] The invention relates to the technical field of shield tunneling segments, in particular to a method for testing the bending performance of shield tunneling segments. Background technique [0002] The shield segment is the main assembly component of shield construction and the outermost barrier of the tunnel, which bears the role of resisting soil pressure, groundwater pressure and some special loads. The shield segment is the permanent lining structure of the shield tunnel. The quality of the shield segment is directly related to the overall quality and safety of the tunnel, and affects the waterproof performance and durability of the tunnel. Therefore, it is necessary to conduct a bending performance test on the shield segments. [0003] The existing shield segment bending performance test device generally cannot fix the shield segment under test well, and the shield segment will be deformed during compression, and the general test equipment cannot ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a shield segment bending performance test method to solve the problem that the existing shield segment bending performance test device proposed in the above background technology generally cannot fix the shield segment for testing well , and the shield segment will be deformed during compression, and the general test equipment cannot meet the deformation conditions of the shield segment, and the bending test mechanism does not have an anti-deflection structure, and the tilting situation may affect the test results.

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