Steel plate clamp and method for FRP plate reinforcement test

Abstract

The invention belongs to the technical field of experimental research in civil engineering reinforcement, and discloses a steel plate clamp and method for an FRP plate reinforcement test, an upper steel plate clamp and a lower steel plate clamp are adjusted, so that the upper steel plate clamp and the lower steel plate clamp rotate to prevent eccentric influence in the loading process; the double-shear test piece composed of the FRP pasted on the two sides through bolt holes formed in the two ends of an upper steel plate clamp and a lower steel plate clamp, and inserting clamp bolts in the bolt holes is fixed, so as to prevent the double-shear test piece composed of the FRP pasted on the two sides from shaking in the fatigue loading process; bolt holes are formed in the middle of the upper and lower steel plate clamps, bolt rods are inserted into the bolt holes, and the upper and lower steel plate clamps are tightened and fixed through nuts, so that the centering deviation of the double-shear test piece consisting of the upper and lower double-sided pasted FRP in the fatigue loading process is prevented. The bearing capacity can be improved by 3-4 KN under the same condition, and it is guaranteed that the test result is highly close to the actual situation. According to the method, reinforcing guiding significance can be obtained, and high theoretical and economic values are achieved.

Description

Technical field[0001]The present invention belongs to the technical field of tested research in the reinforcement of civil engineering, and in particular, it is, in particular, steel clamps and methods for reinforcing tests for FRP plates.Background technique[0002]At present, the FRP reinforced concrete technology has become a hotspot. Most researchers put them in the steel bars when pouring concrete, to assist in the loading of the steel bars to reach out, so although the loading problem can be solved, the steel bars are difficult to ensure the position of the concrete, loaded In the process, the steel bars are easy to pull out from the concrete test block, and the construction difficulty is increased, the cost is increased, the inconvenience is not convenient for a large number of studies, and the researchers use the steel clamps of their own research and development to achieve indirect loading, but most only suitable for quiet Load, and there is a problem with fatigue test loadin...

AI Technical Summary

Problems solved by technology

[0005] (1) The current double-shear test fixtures are very limited. Most of the existing fixtures are set as movable hinges at both ends. Very limited ability to adjust eccentricity

[0006] (2) The existing technology cannot reduce the problem of damage during the installation process of the test piece

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