Pressing, bending and twisting composite stress test loading device

Abstract

The invention discloses a pressing, bending and twisting composite stress test loading device, which comprises a base, a top beam, a reaction wall, a vertical pressure applying piece for applying vertical downward pressure to the top beam, and a horizontal thrust applying piece for applying horizontal force to the top beam, the top beam is arranged above the base, and the pressure applying piece is arranged above the top beam; one end of the horizontal thrust applying piece is hinged to the reaction wall, and the other end of the horizontal thrust applying piece is hinged to the top beam; thehorizontal thrust applying piece can extend and retract in the horizontal direction; the horizontal thrust applying piece and the vertical pressure applying piece are arranged at the two ends of the top beam respectively. According to the invention, the connection position of the horizontal thrust applying piece and the top beam is adjusted; or the connecting rod is used for replacing a horizontalthrust applying piece, loading of load coupling or arbitrary change of a single load of the test piece under the condition of composite stress of pressing, bending and twisting is achieved, the device has the advantages of being flexible in loading, easy to assemble, adjustable and high in applicability and practicability, and all components are detachable and convenient to transport and store.

Description

technical field [0001] The invention belongs to the technical field of civil structure tests, in particular to a loading device for compression, bending and torsion composite stress tests. Background technique [0002] In actual engineering, structures (components) such as transmission towers, offshore drilling platform columns, viaduct piers, corner columns of frame structures, and wind power towers are all in a composite stress state of compression, bending, torsion, or various load combinations. In order to explore the mechanical properties and stress mechanism of structural components under various composite stress states, it is necessary to conduct experimental research on structural components under composite stress states. [0003] Existing compression, bending, and torsion composite force test devices are generally loaded for specific reinforced concrete members or steel pipe concrete members, which lack versatility, and most of them need to use multiple jacks to ach...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a loading device for compression, bending and torsion composite force tests, which solves the problem that the existing test devices are not easy to control the load during loading and cannot simultaneously satisfy the requirements of the test pieces in compression, bending and torsion. Composite, performance research issues under various load combinations

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