Mechanical performance test method of masonry structure under effect of bidirectional principal stress

Abstract

The invention discloses a mechanical performance test method of a masonry structure under the effect of a bidirectional principal stress. The test method comprises the steps: (1) polishing and dedusting a bonding part of a masonry test piece; (2) constructing the bonding part of the masonry test piece and coating a high strength adhesive on the end part of a connecting steel plate; (3) fixing and moulding the connecting steel plate and the masonry test piece by a rough ground; (4) connecting the connecting steel plate and a pulley block; and (5) applying tension to the bonding part of the masonry test piece and controlling the tension applied to the bonding part of the masonry test piece in the test. With the adoption of the method provided by the invention, not only the problem that the tensile stress of the masonry structure is not easy to apply is solved, but also the condition that the edge of the masonry structure test piece is stressed uniformly and reliably after tensile stress is applied. Instruments and devices required by the test are simple and simple and convenient to operate, the test process is continuous, and the test result is accurate and stable. The mechanical performance test method of the masonry structure under the effect of the bidirectional principal stress provided by the invention is suitable for test of mechanical performance of masonry structures in various types under the effect of the bidirectional principal stress.

Description

technical field [0001] The invention relates to a method for testing the mechanical properties of a masonry structure, in particular to a method for testing the mechanical properties of a masonry structure under the action of two-way principal stress. body structure. Background technique [0002] At present, the test methods for studying the unidirectional stress state of masonry structures are relatively mature, and some achievements have been made in the research of test methods for masonry structures (referring to the walls of masonry structures) under the action of two-way principal compressive stress. However, the lack of mechanical performance tests of masonry structures under the action of other two-way principal stresses is mainly due to the use of conventional equipment and methods in the structural laboratory. A reasonable test method for applying tensile stress has not yet been determined, and domestic related research has not yet done so. Proposing an effective ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of under the condition of routine structural test, utilize the test method of the mechanical performance of various two-way principal stresses of masonry structure testing of conventional test equipment, this test method Using simple mechanical tools and hydraulic jacks to effectively test the mechanical properties of masonry structures under the action of two-way tensile and compressive principal stresses and two-way tensile principal stresses, it not only solves the problem that the tensile stress of masonry structures is not easy to apply, but also ensures After the tensile stress, the edge of the masonry structure specimen is evenly and reliably tensioned; the equipment required for the test is simple, easy to operate, the test process is continuous, and the measurement results are accurate and stable. This test method can be applied to the two-way principal stress of various types of masonry structures. Test of mechanical properties under action