A test device and manufacturing method for studying the load of the separation layer on the anchor rod

Abstract

The invention provides a test device for studying the load imposed on anchor rods by a separation layer and a making method. The test device includes an H-shaped test block, a reserved gap is disposed on a horizontal symmetric plane of the test block, the vertical section of the H-shaped test block is internally provided with anchor rods sticked with strain gauges, and both ends of the anchor rods respectively extend to the upper side and lower side of the test block. The left and the right of the H-shaped test block respectively has a groove, the grooves are used for placing a first dial indicator equipped hydraulic jack, the front side and back side of the test block are both provided with a reinforcing steel frame, the reinforcing steel frame is disposed along the corner positions of the grooves, and the upper side and lower side in the grooves are both equipped with reinforcing steel plates. The test block is also provided with a displacement measurement system. The making method comprises the steps of: (1) mold making; (2) making of a concrete test block; (3) sticking of strain gauges to the anchor rods; (4) making of an anchoring agent; and (5) setting of the displacement measurement system. The test device provided by the invention has the advantages of high reliability of test data and convenient operation.

Description

technical field [0001] The invention belongs to the technical field of mechanical research, and in particular relates to a test device and a manufacturing method for studying the load of a separation layer on a bolt. Background technique [0002] The separation layer exerts load on the bolt. In order to determine the stress distribution form and failure law of the rod body during the development of the separation layer, experimental tests should be carried out. However, the field test is difficult. First, it is difficult to determine the position of the separation layer and the separation layer. Secondly, the surrounding rock environment is complex, there are too many influencing factors, and the test dispersion is relatively large. As an effective research method, indoor experiment can verify the correctness and applicability of the theoretical model. The key point of the test is to reserve a separation layer and separate the test block. The present invention starts from t...

AI Technical Summary

Problems solved by technology

[0002] The separation layer exerts load on the bolt. In order to determine the stress distribution form and failure law of the rod body during the development of the separation layer, experimental tests should be carried out. However, the field test is difficult. First of all, it is difficult to determine the position of the separation layer and the separation layer. Secondly, the surrounding rock environment is complex, there are too many influencing factors, and the test dispersion is relatively large

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