Universal device for initial fracture of structural members in progressive collapse experiments

Abstract

The invention relates to a universal device of the initial breaking of a structural member of a structural coherence collapse experiment. The device is composed of a left end plate, a right end plate, a left double bevel steel head, a right double bevel steel head, an upper hoop, a lower hoop, an upper hoop clamping plate, a lower hoop clamping plate, a hoop circular shaft and a tension member. The tension member is composed of a rubber rope and a rope rubber connecting piece or an electric putter, an electric putter fixing member, a putter external member, a steel zipper, a steel wire rope tensioner and a steel zipper connecting member. According to the device, a rotating shaft of a scissor-shaped hoop serves as a fulcrum for the tension member, radial pressure of two double-wedge-surface steel heads for the scissor-shaped hoop to clamp the hoop is provided to the hoop through leverage, and further axial force and bending moment are born through mutual snapping of mating surfaces of the hoop and the steel head. When the device is applied to a large load operating mode, the tensed tail end of a steel rope is connected with the electric putter, and the breaking can be realized by simply providing the force which can overcome the friction between the electric putter and the electric putter external member through the electric putter when the breaking is triggered.

Description

technical field [0001] The invention relates to the research on progressive collapse test in the field of structural engineering, in particular to a general device for the initial fracture of structural members in the progressive collapse test of the structure. Background technique [0002] The difficulty in the operation of the continuous collapse test of building structures is mainly reflected in how to realize the sudden breakage of structural components. The initial breaking device introduced needs to be non-interfering with the conventional properties of the components to be destroyed, the instantaneous failure of the rods after triggering, and the failure triggering. Features such as controllability and thoroughness of breaking. The existing initial destruction devices usually cannot take into account these characteristics, which is mainly reflected in the fact that the devices that focus on the instantaneous failure are usually triggered by external force, and there i...

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Problems solved by technology

The existing initial destruction devices usually cannot take into account these characteristics, which is mainly reflected in the fact that the devices that focus on the instantaneous failure are usually triggered by external force, and there is energy input such as impact; while the device that emphasizes sudden breaking from rest, the controllability and Thoroughness is often problematic

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