A variable space π-type shear test device

Abstract

The invention relates to a variable space Π-type shear test device, which includes a transfer beam and a flat shear beam. The transfer beam is provided with a plurality of height adjustment holes. The horizontal loading device is connected with the transfer beam through the height adjustment holes. The two ends of the direction are respectively set as the first end and the second end, the first end is connected to the conversion beam, the second end extends in the horizontal direction, and the horizontal position adjustable first force transmission bracket and The second force transmission bracket, the test space for accommodating the specimen is formed between the first force transmission bracket and the second force transmission bracket, and also includes a balance counterweight with adjustable horizontal position, and the balance counterweight is connected to the horizontal shear beam And it is arranged between the second end and the second force transmission bracket. On the first force transmission bracket, there is a first fine-tuning bolt that can move horizontally along the test space. On the second force transmission bracket, there is a screw that can move horizontally along the test space. Move the second trimmer bolt. Thus, the present invention has the advantages of simple structure, wide application range, and convenient installation and disassembly.

Description

technical field [0001] The invention belongs to the field of structural test devices, and in particular relates to a variable space Π-type shear test device. Background technique [0002] The seismic performance test of structural units and components is an important means of research on the seismic performance of civil engineering structures. Among them, the shear test device is an important test device for seismic performance tests. Existing shear test devices mainly include cantilever shear test devices and Japanese construction research test devices. The main problems of these devices are: (1) Although the cantilever shear test device is easy to install and dismantle, it cannot consider additional bends. The influence of the moment effect is only applicable to components with a small height-to-width ratio, and the scope of application is small; (2) Although the construction and research type test device considers the influence of the additional bending moment, the cost ...

AI Technical Summary

Problems solved by technology

Existing shear test devices mainly include cantilever shear test devices and Japanese construction research test devices. The main problems of these devices are: (1) Although the cantilever shear test device is easy to install and dismantle, it cannot consider additional bends. The effect of moment is only applicable to components with small height-to-width ratio, and the scope of application is small; (2) Although the construction and research type test device considers the effect of additional bending moment, the cost is high, and the installation and disassembly of specimens are inconvenient. There are strict restrictions on the size and machining accuracy of the parts, and the applicability is poor

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