Shear press apparatus for masonry and method for testing shear press combined strength of masonry

A strength test, masonry technology, applied in the direction of using a stable shear force to test the strength of materials, can solve the problems of overestimating the ultimate shear strength of masonry, difficult to test the shear and compressive strength of masonry, etc. Loading costs, the effect of simplifying the loading process

Pending Publication Date: 2018-04-27
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the shear-compression composite strength test is usually carried out by two-way loading, but this method will cause lateral expansion of the masonry, and it is easy to overestimate the ultimate shear strength of the masonry
Moreover, the existing device only conducts the shear compression test of the masonry for a specific mortar joint angle, and it is difficult to test the shear compression strength of the masonry at different angles.

Method used

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  • Shear press apparatus for masonry and method for testing shear press combined strength of masonry
  • Shear press apparatus for masonry and method for testing shear press combined strength of masonry
  • Shear press apparatus for masonry and method for testing shear press combined strength of masonry

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Embodiment 1

[0032] Such as figure 1 As shown, the device for testing the masonry shear compressive strength of this embodiment includes two molds (1, 2), both of which are provided with curved surfaces and axial planes, wherein the curved surfaces are cylindrical curved surfaces, and the axial plane is provided with There are masonry placement slots 4.

[0033] In some specific embodiments, the two molds are curved cylinders, the outer surface of the curved cylinder is a curved surface, the cylinder is filled with bonding material 3, the external surface of the bonding material is an axial plane, and There is a masonry placement slot. In the case of testing rectangular masonry, such as brick masonry, the curved cylinder in this embodiment is a semi-cylindrical cylinder, and the masonry placement groove is rectangular. The bonding body material may be high-strength compression-resistant materials such as concrete, steel, and wood.

[0034] In some occasions, two molds are assembled into...

Embodiment 2

[0038] The method that adopts the device test masonry shear compressive strength in the above-mentioned embodiment comprises

[0039] Step one, such as figure 2 As shown, the masonry 7 to be tested is installed in the two masonry placement grooves described in the above-mentioned embodiments and assembled into a test piece. The gap 5 of is located on the same straight line;

[0040] Step 2, apply pressure F on the curved surfaces of the two molds 0° , the F 0° The initial direction of is located on the horizontal gray joint to be measured;

[0041] Step 3, then rotate the test piece several times, respectively measure the uniaxial vertical pressure Fα at each rotation angle, calculate the normal stress and shear stress, and α is the rotation angle.

[0042] In the general test process, the angle of each rotation in step 3 is the same, and each rotation is 10°-20°.

[0043] When concrete is used as the bonding material, the method for making the test specimen in step 1 is...

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Abstract

The invention relates to a shear press apparatus for a masonry and a method for testing shear press combined strength of the masonry. The apparatus comprises two moulds, the two moulds are respectively provided with a curved surface and an axial plane, and the axial planes are provided with masonry placing grooves. The method comprises the following steps: a masonry to be measured is installed ina first masonry placing groove and a second masonry placing groove in order to assemble a test piece, and a horizontal mortar joint to be measured on the masonry to be measured and a slit between thefirst masonry placing groove and the second masonry placing groove are in the same line; a pressure F 0 degree is applied to a curved surface of the first mould or the second mould, and an initial direction of the F 0 degree is located at a horizontal mortar joint to be measured; after the test piece is rotated for multitime, a single axis vertical pressure F alpha under each rotation angle is separately measured, direct stress and shear stress are obtained by calculation, and alpha is a rotation angle. A sleeve structure is used for facilitating change of mortar joint angles, simplifying loading process, and reducing loading cost.

Description

technical field [0001] The invention belongs to the field of construction engineering, and in particular relates to a masonry mortar shear-compression composite strength test loading device and a test method, which are applicable to various types of masonry block masonry and the like. Background technique [0002] Masonry is a composite material made of blocks and mortar, which is widely used in current construction projects. As a stressed member, masonry structures are generally not tensile and flexural, but mainly compressed and sheared. In the actual earthquake damage, when the masonry structure is damaged, it is often in a shear-compression composite stress state. Therefore, testing its composite shear compressive strength has more engineering significance than pure shear. [0003] The shear-compression composite test of masonry is an important method to determine the shear performance of masonry under different normal pressures. At present, the shear-compression comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24
CPCG01N3/24
Inventor 信任王美瑶王庆霖陶毅王燕全雷宇
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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