Rock-like material splitting test device

Abstract

The invention belongs to the technical field of a material mechanical test and relates to a rock-like material splitting test device. According to a main body structure, the integrated splitting test device is formed by matching and assembling two functional structure parts including a main body I and a main body II; an upper pressing plate and a lower pressing plate are in a symmetrical structure and are matched and assembled to form splitting test equipment of a rock-like material failure face, so that the upper pressing plate and the lower pressing plate are suitable for tested samples with different sizes and different shapes, and the tested samples more tend to centering radial failures under the effect of a concentrated force; meanwhile, an arc-shaped clamping plate and an elastic spring structure are combined and an end part dividing rule and a lower pressing plate dividing rule are combined, so that the applicability of the test device and the accuracy of an experiment result are improved. The device is simple in whole structure, reliable in principle and flexible in utilization and operation, test data is prepared, the testing precision is high, the effect is good and a test environment is friendly.

Description

Technical field: [0001] The invention belongs to the technical field of material mechanics testing, and relates to a splitting test device for the tensile strength of rock-like materials and concrete, which is used for the tensile strength test of rock-like materials to replace the existing splitting test device. Background technique: [0002] At present, rock-like materials such as rocks and concrete are heterogeneous materials. When the material is subjected to tensile stress, the interior will not reach its strength limit at the same time. In order to ensure the reasonable application of the material in engineering, it is required to determine the tensile strength of the material. Tensile strength is directly related to the design and construction of materials and building structures, and directly affects the safety assessment of structural stability. In the prior art, due to the limitation of objective test technical conditions, the Brazilian split test is often used to ...

AI Technical Summary

Problems solved by technology

The existing splitting test device has very obvious shortcomings: the properties of different types of rock materials determine that the samples need to adopt different sizes and shapes such as cylinder, cuboid, cube, etc., and the existing test device is only for Specific shape and specific size; the existing splitting test device adopts steel wire splitting, and the failure surface of the sample is determined by the upper and lower steel wires. When the strength of the sample is low, the steel wire will be embedded in the sample and the test cannot be completed; During the test device, the slight rotation of the sample will deflect the failure surface, making the test an invalid test; during the splitting process, the normal direction of the failure surface of the sample is rigidly fixed, which increases the tensile strength of the failure surface and reduces the accuracy of the results , reliability; unreasonable test methods will provide wrong guidance for the application of rock-like materials, make wrong assessments of structural stability, and increase safety hazards

At present, safety has gradually become an important issue in engineering development, which puts forward higher requirements for the determination of the tensile strength of rock-like materials, but there is no research report on the improved test device involved in this application from the existing data. There is no relevant patent technology disclosure

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