Screw capable of performing leveling for structural test

Abstract

The invention provides a screw capable of performing leveling for a structural test, belongs to the technical field of the structural tests and particularly provides the screw for leveling a test component in the structural test. The purposes of the screw capable of performing the leveling for the structural test are to make up for defects of facilities used for leveling the test component in thestructural test, improve the test data collection accuracy and guarantee the safety of test personnel and equipment practically. The screw is characterized in that the screw capable of performing theleveling is composed of a bolt with a base, a height-adjustable nut and a height-adjustable pad plate, and the bolt with the base is composed of a round rod and the base. By means of the screw capableof performing the leveling for the structural test, the supporting surface of the test component can be leveled, the test component is supported stably and safely, accurate collection of test data isguaranteed, and occurrence of safety accidents is avoided.

Description

technical field [0001] The invention belongs to the technical field of structural testing, in particular to a screw for leveling a test component (hereinafter referred to as a "test piece") in a structural test. Background technique [0002] In structural tests, pads of granular materials, such as sand, pads of flexible materials, such as rubber pads, are often used to level the specimens, and some jacks are used to level the specimens. [0003] These measures are simple and easy to implement and have their advantages, but the disadvantages are: [0004] First, the deformation of granular materials, flexible materials and jacks will increase with the increase of the test load, so that the test piece cannot actually be leveled, thus seriously affecting the accuracy of test data collection; third Second, the jack has a large height-to-width ratio, which is prone to instability and dumping, which will cause equipment damage and casualties; third, the bearing capacity of bulk m...

AI Technical Summary

Problems solved by technology

[0004] First, the deformation of granular materials, flexible materials and jacks will increase with the increase of the test load, so that they can’t actually level the test piece, thus seriously affecting the accuracy of test data collection; Second, the high aspect ratio of the jack is large, and it is easy to fall over due to instability, which will cause damage to equipment and casualties; third, the bearing capacity of granular materials and flexible materials is small, and cannot cope with large test loads. The bearing capacity, but its bearing capacity depends on the model, because the number of jack models is limited, so the load beyond the range of the rated bearing capacity of these models can not be loaded

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