Circular whole loop tunnel structure test device

Abstract

A circular whole loop tunnel structure test device is disclosed. A symmetric straining self-balance system formed by pull rods and loading beams is used for a loading purpose, and production cost is substantially reduced; by adjusting a position of a screw nut on the pull rod, the test device can be suitable for test loading of a circular whole loop tunnel of all diameter sizes. The circular whole loop tunnel structure test device comprises an annular beam module, a circular whole loop tunnel duct segment, a number of pull rod groups, a number of straining beams, a jack, a sliding support seat A and a sliding support seat B, wherein the annular beam module and the duct segment are two concentric circular structures, the annular beam module is arrange at an inner side while the circular whole loop tunnel duct segment is arranged at an outer side, the circular whole loop tunnel duct segment is placed on the sliding support seat A, the annular beam module is placed on a sliding support seat B, the straining beams are closely attached to the outer side of the duct segment and are uniformly arranged into a cycle along the circular whole loop tunnel duct segment or at other angles, the pull rod groups are connected with the straining beams outside the duct segment and an inner side of the annular beam module, the jack is mounted on the pull rod groups in a penetrated manner at an outer peripheral side, the jack is locked on the outer sides of the straining beams, and the inner side of the annular beam module is fixed.

Description

technical field [0001] The invention relates to a test device for a circular full-ring tunnel structure, in particular to a test loading device for a symmetrical tension self-balancing system composed of tie rods and loading beams. Background technique [0002] The circular full-ring tunnel mainly bears radial loads. If the traditional reaction frame loading device is used, a reaction frame specially designed for loading according to the contour of the full-ring tunnel will be required, and the cost of the reaction frame is usually very expensive, and Versatility is limited by the size of the circular tunnel diameter. Contents of the invention [0003] In order to overcome the shortcomings of high cost and limited versatility of the circular full-ring tunnel using the reaction force frame device for loading, the present invention provides a test device for the circular full-ring tunnel structure, which is composed of a tie rod and a loading beam The symmetrical tension se...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of high cost and limited versatility of the circular full-ring tunnel using the reaction force frame device for loading, the present invention provides a test device for the circular full-ring tunnel structure. The test device is composed of a tie rod and a loading beam The symmetrical tension self-balancing system is used for loading, the cost of the test device is greatly reduced, and by adjusting the position of the nut on the tie rod, it can be applied to the test loading of circular full-ring tunnels with various diameters

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