An Assembled Double Knife Hinge Bearing Applicable to Various Diameters of Round Steel Tubes for Compression Tests

Abstract

The invention relates to the field of structural tests, in particular to an assembled double-knife hinge support system suitable for pressure tests of round steel pipes with various diameters; The connecting bottom plate of the fixed component, the middle plate with orthogonal grooves, the lower connecting plate with a knife hinge on the surface, the splints on both sides of the arc-shaped clamp in the middle are provided with bolt holes, and the nuts of the connecting bolts can be adjusted to realize For the purpose of fixing steel pipes of different diameters, there are oblong bolt holes on both sides of the periphery. By changing the position of the fixing bolts, the relative position of the connected steel pipe and the fixture can be adjusted to achieve the purpose of axial compression and quantitative eccentric compression. The hinge fixing member connects the bottom plate and the lower connecting plate to cooperate with the middle plate provided with orthogonal grooves to realize the two-way hinge support. Since the whole support device is a pure assembly connection, it has a series of advantages such as wide application range, easy disassembly and strong adjustability.

Description

technical field [0001] The invention relates to the field of civil engineering structure tests, in particular to an assembled bidirectional knife-hinge support system that can be used for axial and eccentric pressure tests of circular steel pipes with different diameters. Background technique [0002] Round steel pipe is the most commonly used component form in construction engineering, and is widely used in stadiums, airport terminals, transmission towers, bridges and other projects. Axial compression and eccentric compression are the most typical stress modes of circular steel pipe members during service, and the axial compression and eccentric compression experiments are the most important technical means to study their mechanical properties. [0003] Boundary support conditions are the key factors affecting the compression test of circular steel pipe members. At present, the support types commonly used in the axial compression test of circular steel pipes mainly include:...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an assembled double-knife hinge support system suitable for the compression test of round steel pipes with various diameters. During the experiment, it is difficult to align the axis of the round steel pipe, the rotation of the support is difficult, the degree of eccentricity is difficult to quantify and control in the eccentric compression test, and the connecting plate falls off during the test. Test control and safety issues

Realize the characteristics of wide application range, easy disassembly and strong adjustability, so as to solve the problems of low installation efficiency and difficult cleaning caused by welding or plaster pouring and fixing of traditional devices

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