Concrete uniaxial tension load and test device and use method thereof

Abstract

The invention discloses a concrete uniaxial tension load holding and testing device and a using method thereof. An independent load sensor does not need to be adopted, and the concrete uniaxial tension load holding and testing device also serves as a load sensor through the method that a connecting sleeve internally provided with the threads and the outer smooth circle is pasted with a resistancestrain gauge, so the testing device is simplified, and the cost problem that a large number of load sensors need to be occupied for long-term load holding is solved. Axial tension is applied to the concrete test block by simultaneously rotating the four second finish rolling nuts close to one side of an upper spherical hinge. Load is obtained by using the connecting sleeve pasted with the strain gauges as a load sensor, and fine adjustment of the load is realized by slightly rotating the second specification of the finish rolling nut. For a concrete uniaxial tension testing device, a square steel plate and a straight-through drawing instrument are additionally arranged on the basis of a load holding device. According to the invention, a concrete uniaxial tension holding load and a testingdevice are combined into one, so the operation is simple, and a stable and effective continuous load can be provided.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a concrete uniaxial tensile load and testing device and a use method thereof, and is especially suitable for studying the durability test of a concrete uniaxial tensile test piece under the coupled action of load and erosive environment. Background technique [0002] As we all know, concrete is one of the most widely used building materials in current engineering structures, and its compressive strength is its most prominent feature, while less attention has been paid to its tensile strength. Therefore, in modern structures, concrete is mainly used to bear the compressive strength, and the tensile strength of concrete is generally only 1 / 17~1 / 8 of the compressive strength, and a small load can reach the tensile strength of concrete, so in In structural design, the tensile strength of concrete is usually neglected and the tensile strength of the structure is borne by s...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of difficult centering of concrete specimens and relatively complicated test operation process when using traditional concrete tensile test devices, the present invention provides a concrete uniaxial tensile load and test device and its use method. The method of adding a spherical hinge to ensure that the concrete axis is tensioned

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