CN107966373A - Masonry cuts pressure device and masonry cuts pressure combined strength bination test method - Google Patents
Masonry cuts pressure device and masonry cuts pressure combined strength bination test method Download PDFInfo
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- CN107966373A CN107966373A CN201711117014.1A CN201711117014A CN107966373A CN 107966373 A CN107966373 A CN 107966373A CN 201711117014 A CN201711117014 A CN 201711117014A CN 107966373 A CN107966373 A CN 107966373A
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- masonry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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Abstract
Pressure device is cut the present invention relates to masonry and masonry cuts pressure combined strength bination test method.Device according to the present invention includes two moulds, and curved surface and axial plane are respectively equipped with two moulds, and axial plane is equipped with masonry placing groove.The method of the present invention includes：Masonry to be measured is installed in the first masonry placing groove and the second masonry placing groove of the present invention and is assembled into test block, the gap between horizontal mortar joint to be measured and the first masonry placing groove and the second masonry placing groove on the masonry to be measured is located along the same line；Apply pressure F on the curved surface of the first mould or the second mould0°, the F0°Inceptive direction be located on horizontal mortar joint to be measured；Multiple rotary test block afterwards, measures the single shaft vertical pressure F α under each rotation angle respectively, be computed direct stress and shear stress size, α is rotation angle.The present invention, easy to change mortar joint angular dimension, simplifies loading procedure, reduces loading cost by tube-in-tube structure.
Description
Technical field
The invention belongs to building engineering field, and in particular to a kind of masonry mortar cut pressure combined strength bination loading device for testing and
Test method, suitable for all kinds of brick stone block masonries etc..
Background technology
Masonry is a kind of composite material built by laying bricks or stones by bulk and mortar, using very wide in current architectural engineering
It is general.As primary structure member, masonry structure generally not stretching-resisting bending-resisting is main to be pressurized and cut.The masonry structure in actual earthquake
During destruction, often it is in and cuts pressure compound stress.Therefore, test its compound shear strength and have more engineering significance than pure shear.
Masonry cuts pressure composite testing, is the important method for measuring shear behavior of the masonry under different positive pressures.
At present, cut pressure combined strength bination experiment generally use biaxial loadings to realize, but this method can make masonry produce lateral expansion, easily over-evaluate
The ultimate shearing strength of masonry.And the pressure of cutting that existing apparatus carries out masonry just for a certain specific mortar joint angle is tested, very
Difficulty realizes the test of the masonry shear strength under different angle.
The content of the invention
The defects of for the prior art or deficiency, an object of the present invention are to provide a kind of masonry shear strength test and use
Device.
Device provided by the invention includes the first mould and the second mould, and first mould is equipped with first surface and the
One axial plane, the first surface are Cylinder Surface, and first axial plane is equipped with the first placing groove of masonry；
Second mould is equipped with the second curved surface and the second axial plane, and second curved surface is Cylinder Surface, and described
Two axial planes are equipped with the second placing groove of masonry.
In some embodiments, the first mould of the invention includes first surface cylinder, the first surface cylinder
It is equipped with first surface, cohesive body is filled with the first surface cylinder, the cohesive body is equipped with the first axial plane, this
The first placing groove of masonry is offered on one axial plane；
Second mould includes the second curved surface cylinder, and the second curved surface cylinder is equipped with the second curved surface, second curved surface
Cohesive body is filled with cylinder, the cohesive body is equipped with the second axial plane, which places equipped with masonry second
Groove.
Optionally, cohesive body material of the invention is concrete, steel or wood material.
Optionally, first surface cylinder of the invention is semi-cylindrical cylinder, and first placing groove of masonry is cuboid；
The second curved surface cylinder is semi-cylindrical cylinder, and second placing groove of masonry is cuboid.
Optionally, the first mould of the invention and the second mould are assembled into cylinder, and the first axial plane and the second axis
Plane is parallel opposite and is equipped with gap therebetween, and the first placing groove of masonry and the second placing groove of masonry the composition masonry is placed
Groove.
Further, the device of the invention further includes the first backing plate and the second backing plate, and it is flat that first backing plate is equipped with first
Face A and the first plane B, second backing plate are equipped with the second plane A and the second plane B, the first plane A and the second plane
A is respectively used to the first mould of installation and the second mould, the first plane B and the second plane B are used for connecting test instrument.
Preferably, the first plane A of the invention is equipped with groove, and the second plane A is equipped with groove.
It is a further object of the present invention to provide a kind of masonry shear strength test method.
The method of the present invention includes：
Masonry to be measured, is installed on the first masonry placing groove and the second masonry described in claim 1,2,3 or 4 by step 1
It is assembled into test block in placing groove, the horizontal mortar joint to be measured on the masonry to be measured is put with the first masonry placing groove and the second masonry
The gap put between groove is located along the same line；
Step 2, applies pressure F on the curved surface of the first mould or the second mould0°, the F0°Inceptive direction positioned to be measured
On horizontal mortar joint；
Step 3, multiple rotary test block, measures the single shaft vertical pressure F α under each rotation angle respectively afterwards, warp
Calculate direct stress and shear stress size, α is rotation angle.
Optionally, each rotating angle is identical in test method of the present invention, every time 10 ° -20 ° of rotation.
Optionally, step 1 of the present invention includes：
Two semi-cylindrical cylinders are placed on outside masonry, and chock plug, Zhi Hou are set between two semi-cylindrical cylinders
Masonry surrounding, sleeve interior space casting concrete, remove chock plug after concrete curing and obtain test block, the masonry to be measured
On horizontal mortar joint to be measured and the first masonry placing groove and the second masonry placing groove between gap be located along the same line.
It is using the beneficial effect of above-mentioned technical proposal：
The masonry that the present invention uses cuts pressure device device different from the past, breaches tradition only for a certain specific mortar
What mortar joint angle was carried out cuts pressure experiment.
Test method of the present invention is easy to change mortar joint angular dimension by the semicircle rigid sleeve structure of device, and only needs
Putting on top rigid pressure plate single shaft vertical pressure can make device simplify loading procedure in pressure combined state is cut, reduce
Load cost.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the device of the invention test schematic diagram.
Fig. 3 is the direct stress and shearing strength graph of relation of embodiment.
Fig. 4 is the test result of existing detection method.
Embodiment
The masonry of the present invention can be specifically brick setting, block masonry, barnacle body etc..
The shearing strength of the present invention refers to that masonry mortar joint interface bears to cut when outer forced direction is parallel with masonry mortar joint
The attainable ultimate bearing limit value of effect institute is cut, is usually represented with fy, unit MPa.When mortar mortar joint and single shaft in the present invention
Belong to pure shearing during angle α=0 ° of vertical pressure, when mortar joint and single shaft vertical pressure are vertical there are during an angle, showing
Direct stress occurs in mortar joint, and direct stress has the shearing strength of mortar joint Different Effects, cuts pressure combined strength bination and refers to：In difference
The shearing strength of masonry under direct stress effect.
Embodiment 1：
As shown in Figure 1, the masonry shear strength device for testing of the embodiment includes two moulds (1,2), two moulds
On be equipped with curved surface and axial plane, curved surface therein is Cylinder Surface, and axial plane is equipped with masonry placing groove 4.
In some specific embodiments, two moulds are curved surface cylinder, and the outer surface of curved surface cylinder is curved surface, in cylinder
Filled with binding material 3, the outer surface of binding material is axial plane, which is equipped with masonry placing groove.Testing
Rectangle masonry, such as under the occasion of brick setting, which is semicolumn cylinder, masonry placing groove is rectangle
Body.Cohesive body material therein can be high intensity compression-resistant material such as concrete, steel, timber etc..
In some occasions, two moulds are assembled into cylinder, and leave gap 6 between both two axial planes,
Two masonry placing grooves form complete masonry placing groove.
Consider the size of brick setting, two moulds be respectively two independent thickness be 20mm, it is outside diameter 400mm, a height of
The rigid semi-circular sleeve of 365mm.
For convenient test, a backing plate 6 is respectively equipped with two moulds, two opposite plane sides on backing plate are used to install
Test equipment, side are used for installation mold.To ensure the stabilization of mould installation, the plane of installation mold is equipped with groove, mould
In the groove.
Embodiment 2：
Method using the device to test masonry shear strength in above-described embodiment includes
Step 1, as shown in Fig. 2, group in two masonry placing grooves that masonry 7 to be measured is installed on described in above-described embodiment
Dress up test block, the gap 5 between horizontal mortar joint to be measured 8 and two masonry placing grooves on masonry to be measured is located at same straight line
On；
Step 2, applies pressure F on the curved surface of two moulds0°, the F0°Inceptive direction be located at horizontal mortar joint to be measured
On；
Step 3, multiple rotary test block, measures the single shaft vertical pressure F α under each rotation angle respectively afterwards, warp
Calculate direct stress and shear stress size, α is rotation angle.
In general test process, each rotating angle is identical in step 3, every time 10 ° -20 ° of rotation.
When using concrete for binding material, the production method that test specimen is tested in step 1 is：
Two semi-cylindrical cylinders are placed on outside masonry, and chock plug, Zhi Hou are set between two semi-cylindrical cylinders
Masonry surrounding, sleeve interior space casting concrete, remove chock plug after concrete curing and obtain test block, the masonry to be measured
On horizontal mortar joint to be measured and the first masonry placing groove and the second masonry placing groove between gap be located along the same line.
One specific test case：By taking ordinary fired brick as an example, building block specification is 240mm × 115mm × 53mm, and mortar is grey
Seam thickness is 10mm, size be offered among the rigid pressure plate 6 of 400mm × 365mm × 40mm size be 160mm ×
The groove of 365mm × 20mm.
Step 1：Experiment is built by laying bricks or stones with pressure combined strength bination test brick setting test specimen is cut, length, width and height size is 240mm × 365mm
× 245mm, and brick setting test specimen is conserved 28 days under standard environment.
Step 2：Brick setting test specimen is uprightly placed, i.e., the test specimen face view upset in step 1 is vertical view face.
Step 3：It is 20mm by two independent thickness, the rigid semi-circular sleeve of outside diameter 400mm, a height of 365mm
(3) upright placement is separated, is placed on the brick setting test specimen of step 2, and place two length and width at both ends respectively in separated 10mm
The foam chock plug (6) of high size 80mm × 10mm × 365mm clogs, and is poured afterwards in test specimen surrounding, rigid sleeve (3) inner space
Filling C40 concrete (4) is built, removes foam chock plug after concrete curing shaping strength is formed.
Step 4：Upset test specimen be positioned over upper and lower two it is block-shaped for cuboid and middle fluting rigid pressure plate (5) it
Between, and rotate molding device in step 3, rotational angle for single shaft vertical pressure and mortar mortar joint angle, this step with
Exemplified by 30 °, then device centering handled, forcing press can be used to carry out single shaft vertical pressure to masonry test specimen afterwards, cut press fitting
It is as shown in Figure 2 to put front view.
Wherein：
1st, the device being further applied load can be any machine that can apply single shaft vertical pressure, including a variety of Universal motors and
Forcing press；
2nd, the rigid pressure plate of upper and lower both sides and the steel type of semicircle rigid canister do not limit；
3rd, single shaft vertical pressure is delivered to 1 by 6, then is delivered to 4 by 3, finally acts on brick setting test specimen；
According to mortar mortar joint angle [alpha] (angle i.e. between single shaft vertical pressure and mortar mortar joint) and single shaft vertical pressure F
α, can calculate direct stress σ0=F α * cos α/A, fy=F α * sin α/A, then substitute into α=30 ° and A=0.24 × 0.365=
0.0876m2, calculate σ0=F30°* cos30 °/0.0876=9.89F30°, fy=F30°Sin30 °/0.0876=5.71F30°.A is
When mortar mortar joint angle is 0 °, ((mortar is grey for component 8 in Fig. 2 for the area in the masonry test specimen section of single shaft vertical pressure effect
Seam) place plane), σ 0 is direct stress, and fy is shearing strength, and the F30 ° of single shaft applied when turning to 30 ° by device is vertically pressed
Power remembers F30°。
Masonry test specimen direct stress and shearing strength relation curve, this reality can be drawn according to the size of the change of α angles and F
Example expands into mortar mortar joint angle [alpha]：0 °, 15 °, 30 °, 45 °, 60 °, 75 °, 90 °, that is, make in 7 same steps three and be molded
Device afterwards.Experiment only need to rotate different mortar mortar joint angle [alpha]s every time, that is, obtain the direct stress and shearing strength of different angle
Size, further obtains direct stress and shearing strength relation curve, as shown in Figure 3.Masonry is enriched to cut under pressure combined state
Constitutive relation, can obtain the different failure laws for cutting shear strength of masonry under pressure assembled state.
Single shaft vertical pressure F under each rotation angle of the embodimentα, direct stress and value of shearing test result such as table
Shown in 1.
Table 1
| Mortar mortar joint angle [alpha] | 0° | 15° | 30° | 45° | 60° | 75° | 90° |
| Fα | F0° | F15° | F30° | F45° | F60° | F75° | F90° |
| σ0 | 11.42F0° | 11.03F15° | 9.89F30° | 8.07F45° | 5.71F60° | 2.95F75° | 0 |
| fy | 0 | 2.95F15° | 5.71F30° | 8.07F45° | 9.89F60° | 11.03F75° | 11.42F90° |
Comparative example：
(it is in masonry test specimen by biaxial loadings to cut pressure combined state, i.e., apply masonry test specimen with conventional method
Vertical shear stress, and laterally applying direct stress, shearing strength of the masonry test specimen under different direct stress is obtained, and draw and just should
The relation curve of power and shear stress) direct stress and the relation curve of shearing strength are equally can obtain, test result is as shown in Figure 4.
But the present invention has the following advantages that by comparison：First, substituted compared to the conventional method present invention using unidirectional loading
Biaxial loadings, simplify load mode, improve experiment accuracy；Secondly, conventional method cannot change mortar mortar joint angle, Zhi Nengzhen
A certain special angle is tested, and the present invention is improved this and can change mortar mortar joint angle by tumbler as needed
Degree.Thus, the present invention has the advantages that loading cost is low, simple and convenient, highly practical.
Architectural feature the foregoing is merely the specific embodiment of the present invention, but the present invention is not limited thereto.
Claims (10)
1. a kind of masonry shear strength device for testing, it is characterised in that described device includes the first mould and the second mould, institute
State the first mould and be equipped with first surface and the first axial plane, the first surface is Cylinder Surface, on first axial plane
Equipped with the first placing groove of masonry；
Second mould is equipped with the second curved surface and the second axial plane, and second curved surface is Cylinder Surface, second axis
Plane is equipped with the second placing groove of masonry.
2. masonry shear strength device for testing as claimed in claim 1, it is characterised in that the first mould includes first surface
Cylinder, the first surface cylinder are equipped with first surface, cohesive body, the cohesive body are filled with the first surface cylinder
The first axial plane is equipped with, the first placing groove of masonry is offered on first axial plane；
Second mould includes the second curved surface cylinder, and the second curved surface cylinder is equipped with the second curved surface, the second curved surface cylinder
Interior to be filled with cohesive body, the cohesive body is equipped with the second axial plane, which is equipped with the second placing groove of masonry.
3. masonry shear strength device for testing as claimed in claim 2, it is characterised in that the cohesive body material is coagulation
Soil, steel or wood material.
4. masonry shear strength device for testing as claimed in claim 2, it is characterised in that the first surface cylinder is half
Cylindrical tube, first placing groove of masonry are cuboid；The second curved surface cylinder is semi-cylindrical cylinder, the masonry
Second placing groove is cuboid.
5. masonry shear strength device for testing as claimed in claim 1 or 2, it is characterised in that first mould and
Two molds are assembled into cylinder, and the first axial plane is parallel with the second axial plane opposite and is equipped with gap therebetween, described
The first placing groove of masonry and the second placing groove of masonry composition masonry placing groove.
6. masonry shear strength device for testing as claimed in claim 1 or 2, it is characterised in that device further includes the first pad
Plate and the second backing plate, first backing plate are equipped with the first plane A and the first plane B, and it is flat that second backing plate is equipped with second
Face A and the second plane B, the first plane A and the second plane A is respectively used to installation the first mould and the second mould, and described the
One plane B and the second plane B is used for connecting test instrument.
7. masonry shear strength device for testing as claimed in claim 5, it is characterised in that the first plane A is equipped with
Groove, the second plane A are equipped with groove.
8. a kind of masonry shear strength test method, it is characterised in that method includes：
Masonry to be measured, is installed on the first masonry placing groove and the placement of the second masonry described in claim 1,2,3 or 4 by step 1
It is assembled into test block in groove, horizontal mortar joint to be measured and the first masonry placing groove and the second masonry placing groove on the masonry to be measured
Between gap be located along the same line；
Step 2, applies pressure F on the curved surface of the first mould or the second mould0°, the F0°Inceptive direction be located at level to be measured
On mortar joint；
Step 3, multiple rotary test block, measures the single shaft vertical pressure F α under each rotation angle, is computed respectively afterwards
The size of direct stress and shear stress is obtained, α is rotation angle.
9. masonry shear strength test method as claimed in claim 7, it is characterised in that each rotating angle is identical, often
Secondary 10 ° -20 ° of rotation.
10. masonry shear strength test method as claimed in claim 7, it is characterised in that the step 1 includes：
Two semi-cylindrical cylinders are placed on outside masonry, and chock plug is set between two semi-cylindrical cylinders, afterwards in masonry
Surrounding, sleeve interior space casting concrete, remove chock plug after concrete curing and obtain test block, on the masonry to be measured
Gap between horizontal mortar joint to be measured and the first masonry placing groove and the second masonry placing groove is located along the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711117014.1A CN107966373A (en) | 2017-11-13 | 2017-11-13 | Masonry cuts pressure device and masonry cuts pressure combined strength bination test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711117014.1A CN107966373A (en) | 2017-11-13 | 2017-11-13 | Masonry cuts pressure device and masonry cuts pressure combined strength bination test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155637A (en) * | 2021-02-08 | 2021-07-23 | 建研科技股份有限公司 | Detection device and detection method for bonding shear strength of UHPC (ultra high performance polycarbonate) reinforced surface layer and masonry interface |
| CN114414371A (en) * | 2022-01-18 | 2022-04-29 | 天津大学 | Device and method for testing transverse compressive bearing capacity of FRP (fiber reinforced Plastic) rib-clamping piece |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718662A (en) * | 2010-01-20 | 2010-06-02 | 重庆大学 | Experimental device of comprehensive stressing performance of material shearing force and pressure |
| US20110000307A1 (en) * | 2009-07-03 | 2011-01-06 | Rolls-Royce Plc | Test apparatus and method |
| CN102519808A (en) * | 2011-12-26 | 2012-06-27 | 长沙理工大学 | Device for testing composite asphalt pavement interlayer shear fatigue, and method thereof |
| CN102830023A (en) * | 2012-09-03 | 2012-12-19 | 桂林理工大学 | Variable-angle plate testing method of cylinder rock sample |
| CN103215891A (en) * | 2013-04-22 | 2013-07-24 | 中铁四局集团有限公司 | Manufacturing technology of reserved expansion joint and reserved deformation joint of crash barrier |
| CN204286951U (en) * | 2014-07-13 | 2015-04-22 | 西北农林科技大学 | A kind of concrete shear test instrument |
| CN105510154A (en) * | 2016-01-01 | 2016-04-20 | 三峡大学 | Device for measuring shearing strength index of rock-soil specimen and measuring method |
| CN105527172A (en) * | 2016-01-01 | 2016-04-27 | 三峡大学 | Apparatus and method for measuring geotechnical cylindrical sample shear strength index |
| CN207423702U (en) * | 2017-11-13 | 2018-05-29 | 西安建筑科技大学 | Masonry shear strength device for testing |
-
2017
- 2017-11-13 CN CN201711117014.1A patent/CN107966373A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110000307A1 (en) * | 2009-07-03 | 2011-01-06 | Rolls-Royce Plc | Test apparatus and method |
| CN101718662A (en) * | 2010-01-20 | 2010-06-02 | 重庆大学 | Experimental device of comprehensive stressing performance of material shearing force and pressure |
| CN102519808A (en) * | 2011-12-26 | 2012-06-27 | 长沙理工大学 | Device for testing composite asphalt pavement interlayer shear fatigue, and method thereof |
| CN102830023A (en) * | 2012-09-03 | 2012-12-19 | 桂林理工大学 | Variable-angle plate testing method of cylinder rock sample |
| CN103215891A (en) * | 2013-04-22 | 2013-07-24 | 中铁四局集团有限公司 | Manufacturing technology of reserved expansion joint and reserved deformation joint of crash barrier |
| CN204286951U (en) * | 2014-07-13 | 2015-04-22 | 西北农林科技大学 | A kind of concrete shear test instrument |
| CN105510154A (en) * | 2016-01-01 | 2016-04-20 | 三峡大学 | Device for measuring shearing strength index of rock-soil specimen and measuring method |
| CN105527172A (en) * | 2016-01-01 | 2016-04-27 | 三峡大学 | Apparatus and method for measuring geotechnical cylindrical sample shear strength index |
| CN207423702U (en) * | 2017-11-13 | 2018-05-29 | 西安建筑科技大学 | Masonry shear strength device for testing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155637A (en) * | 2021-02-08 | 2021-07-23 | 建研科技股份有限公司 | Detection device and detection method for bonding shear strength of UHPC (ultra high performance polycarbonate) reinforced surface layer and masonry interface |
| CN114414371A (en) * | 2022-01-18 | 2022-04-29 | 天津大学 | Device and method for testing transverse compressive bearing capacity of FRP (fiber reinforced Plastic) rib-clamping piece |
| CN114414371B (en) * | 2022-01-18 | 2024-03-22 | 天津大学 | Device and method for testing transverse compressive bearing capacity of FRP (fiber reinforced Plastic) rib-clamping piece |
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