CN107782621B - Concrete material uniaxial tension constitutive relation test device - Google Patents
Concrete material uniaxial tension constitutive relation test device Download PDFInfo
- Publication number
- CN107782621B CN107782621B CN201710959783.XA CN201710959783A CN107782621B CN 107782621 B CN107782621 B CN 107782621B CN 201710959783 A CN201710959783 A CN 201710959783A CN 107782621 B CN107782621 B CN 107782621B
- Authority
- CN
- China
- Prior art keywords
- limiting
- limiting box
- concrete material
- constitutive relation
- uniaxial tension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- 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
- G01N3/02—Details
-
- 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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a concrete material uniaxial tension constitutive relation test device which comprises two limiting boxes with openings at two ends and limiting steel plates which are arranged in the limiting boxes and correspond to the side walls of the limiting boxes one by one, wherein a U-shaped clamping groove is formed in one side surface, opposite to the side wall of each limiting steel plate, of each limiting box; the two limiting boxes are vertically arranged in the longitudinal direction and are connected through the strain gauge, so that the phenomena of sliding and breaking of the test piece in the loading load process are avoided, the test loading load is limited on the axis of the test piece, and the device is suitable for uniaxial tension or compression tests of concrete materials with different sizes.
Description
Technical Field
The invention belongs to the field of structural engineering tests, and particularly relates to a concrete material uniaxial tension constitutive relation test device.
Background
Practice proves that in the process of a concrete axis tension test, the test piece inevitably has load eccentricity and the end part of the test piece is broken; on the other hand, due to the influence of factors such as a testing device, a testing technology, the size of a test piece and the like, the test has limitation, and the discreteness of the measured result is large.
Disclosure of Invention
In order to solve the problems, the invention provides a concrete material uniaxial tension constitutive relation test device, which can realize the loading of concrete test pieces with different sizes on axial loads, synchronously record the strain of the test pieces in the loading process, has simple manufacture and can be repeatedly used, prevent the test pieces from breaking and sliding in the loading process and ensure the accuracy of data measured by the test.
In order to achieve the purpose, the invention adopts the technical scheme that: the single-shaft tension constitutive relation test device for the concrete material comprises two limiting boxes with openings at two ends and limiting steel plates which are arranged in the limiting boxes and correspond to the side walls of the limiting boxes one by one, wherein a U-shaped clamping groove is formed in the side surface, opposite to the side wall of each limiting steel plate, of each limiting box, a rotatable circular fastening steel sheet is clamped in each U-shaped clamping groove, one end of a fastening bolt penetrates through the side wall of each limiting box to be connected with the circular fastening steel sheet, and the fastening bolt is in threaded fit with the side wall of each limiting box; two spacing casees are vertical arranges and the opening direction is the same, and connects through the strainometer between two spacing casees.
The spacing box is the design of rectangle structure, and four lateral walls all are provided with the strainometer.
The fastening bolt is welded and fixed with the round fastening steel sheet.
The outer side wall of one limiting box is provided with a support, the outer side wall of the other limiting box is provided with angle steel corresponding to the support, the base of the strain gauge is fixed in the support, and the extending end of the strain gauge is fixed on the angle steel.
Spacing case includes first spacing case and the second spacing case of arranging from top to bottom, and two tip bear the weight of the connecting piece and install respectively at first spacing roof portion and second spacing bottom of the case portion.
The end part bearing connecting piece and the limiting box are uniformly provided with connecting lifting lugs with the number and the type matched with each other in a circle and are connected through bolts.
The end part bearing connecting piece is connected with the limiting box in a welding mode.
The outer side surface of the end bearing connecting piece is a plane for loading a pressure test loading device or a lifting lug for loading a tension test loading device.
The minimum specification of the fastening bolt is M16, and the performance grade is not lower than 8.8.
The outer wall of the limiting box is provided with a rib plate.
Compared with the prior art, the invention has at least the following beneficial effects: set up two both ends open-ended spacing casees and set up the spacing steel sheet at spacing incasement portion and spacing case lateral wall one-to-one, adopt the bolt-up, avoid concrete material uniaxial tensile test's off-centre, fracture and slip phenomenon, all be provided with U type draw-in groove on every spacing steel sheet and the relative side of spacing case lateral wall, U type draw-in groove inside callipers is equipped with rotatable circular fastening steel sheet, fastening bolt one end is passed spacing case lateral wall and is connected with circular fastening steel sheet, make it be applicable to not unidimensional concrete material test piece, connect through the strainometer between two spacing casees, can be synchronous and record test data in succession.
Further, the strainometers arranged on the four side walls of the limiting box respectively reflect the strain of the four surfaces of the test piece in the test process, whether the strain of the four surfaces of the test piece is consistent or not is monitored, strain data of the test piece is recorded, and then later-stage data processing and analysis are carried out to further judge the uniformity of the interior of the test piece.
Furthermore, the fastening bolt and the circular fastening steel sheet are welded and fixed, the processing technology is simple, and the connection is firm and reliable.
Furthermore, strain gauges are arranged on four side walls of the limiting box, supports and angle steel are correspondingly arranged on the outer side of the limiting box, two ends of each strain gauge are fixed, the strain gauges can record strain of a test piece in a circle in the process of tension and compression tests, and more accurate and complete data are reflected.
Furthermore, the limiting box comprises a first limiting box and a second limiting box which are arranged up and down, the two end parts bear the connecting pieces and are respectively installed at the top of the first limiting box and the bottom of the second limiting box, and the test loading equipment bears the connecting pieces through the end parts to apply loads to the limiting box and the test piece.
Furthermore, the end part bearing connecting piece and the limiting box are uniformly provided with connecting lifting lugs matched in quantity and type in a circle, and the end part bearing connecting piece can be replaced through bolt connection.
Furthermore, the end bearing connecting piece is connected with the limiting box in a welding mode, the connecting mode is firm and reliable, looseness is avoided, and the test loading process is stable.
Furthermore, the outer side surface of the end bearing connecting piece is a plane for loading pressure test load equipment or a lifting lug for loading tension test load equipment, and the pressure test or the tensile test can be realized only by replacing the end bearing connecting piece.
Further, the specification is M16, the performance grade is 8.8, and the axial load is born by the fastening bolt in the test process.
Furthermore, the rib plates are arranged on the outer wall of the limiting box to improve the strength of the limiting box, so that the limiting box is prevented from deforming in the bolt fastening process.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention.
Fig. 2 is a disassembled schematic view of the three-dimensional structure of the present invention.
FIG. 3 is a schematic top view of the present invention.
FIG. 4 is a partial schematic view of the present invention.
FIG. 5 is a schematic view of a partial connection according to the present invention.
In the attached drawing, 1-end bearing connecting piece, 2-limit box, 3-fastening bolt, 4-angle steel, 5-strain gauge, 6-bracket, 8-limit steel plate, 9-U-shaped clamping groove, 10-round fastening steel sheet, 21-first limit box and 22-second limit box.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the limit box 2 is designed in a rectangular structure, four side walls are provided with strain gauges 5, wherein four outer side walls of a first limit box 21 are provided with angle steels 4, four outer side walls of a second limit box 22 are provided with brackets 6, bases of the strain gauges 5 are fixed in the brackets 6, extending ends of the strain gauges 5 are fixed on the angle steels 4, before a test, two end connectors 1 are connected with a loading device, in the loading test process, the strain gauges 5 generate corresponding displacement along with the extension or shortening of a test piece under the driving of the brackets 6 and the angle steels 4, so that strain data of the test piece are reflected, the characteristics of the strain data depend on the uniformity of the test piece, the characteristics of a test piece material and the loading rate of a load, and the data recorded by the strain gauges 5 can reflect the uniformity; the outer side surface of the end bearing connecting piece 1 is a plane for loading a pressure test loading device or a lifting lug for loading a tension test loading device.
As shown in fig. 2, the invention comprises two limiting boxes 2 with openings at two ends and limiting steel plates 8 which are arranged inside the limiting boxes 2 and correspond to the side walls of the limiting boxes 2 one by one, wherein a U-shaped clamping groove 9 is arranged on one side surface of each limiting steel plate 8 opposite to the side wall of the limiting box 2, a rotatable circular fastening steel sheet 10 is clamped in the U-shaped clamping groove 9, one end of a fastening bolt 3 penetrates through the side wall of the limiting box 2 to be connected with the circular fastening steel sheet 10, and the fastening bolt 3 is in threaded fit with the side wall of the limiting box 2; two spacing casees 2 vertically arrange and the opening direction is the same, and connect through strainometer 5 between two spacing casees 2.
As shown in fig. 4, a side of the limiting steel plate 8 is provided with a U-shaped clamping groove 9, a circular fastening steel sheet 10 is welded at the end of a stud of the fastening bolt 3, the circular fastening steel sheet 10 is clamped into the U-shaped clamping groove 9 to be connected with the fastening bolt 3, the circular fastening steel sheet 10 can rotate in the U-shaped clamping groove 9, before the test, the fastening bolt is screwed, the limiting steel plate 8 is pushed to clamp the test piece, after the test is completed, the fastening bolt 3 is loosened, the limiting steel plate 8 is driven to loosen the test piece, and the circular fastening steel sheet 10 on the limiting steel plate 8 can also enable the pressure of the fastening bolt 3 to be more uniformly distributed on the.
As shown in fig. 5, the end bearing connecting piece 1 and the limiting box are uniformly provided with connecting lugs in matching number and type at a circumference, and are connected by bolts.
The using process of the invention is as follows: the test piece to be tested is placed on the inner side of the limiting steel plate 8, the fastening bolt 3 is screwed, the limiting steel plate 8 clamps the test piece to be tested and is fixed inside the limiting box 2, the end part bearing connecting piece 1 is respectively connected with the limiting box 2, and finally the end part bearing connecting piece 1 is connected with the loading test load equipment to complete the loading load test.
According to the invention, preferably, the end part bearing connecting piece 1 and the limiting box 2 are uniformly provided with connecting lifting lugs matched in number and type in a circle, the connecting lifting lugs are connected by bolts, the end part bearing connecting piece 1 is convenient to replace, when a pressure test is required, the outer side surface of the connecting lifting lug can be realized by the plane end part bearing connecting piece 1 for loading a pressure test load device, and the circular fastening steel sheet 10 at the stud end part of the fixing bolt 3 is connected with the stud end part of the fixing bolt 3 in a welding mode.
The invention limits the uniaxial tension load or pressure load of the concrete material on the axis of the test piece, avoids the sliding and breaking phenomena of the test piece in the loading load process, is suitable for the test pieces with different sizes, realizes synchronous and continuous recording of test data, ensures the accuracy of the test data, can be repeatedly used, is easy to manufacture, has simple structural design, reliable and stable test piece clamping mode, is simple and convenient to operate, and is suitable for large-scale popularization and use.
Claims (10)
1. The single-shaft tension constitutive relation test device for the concrete material is characterized by comprising two limiting boxes (2) with openings at two ends and limiting steel plates (8) which are arranged in the limiting boxes (2) and correspond to the side walls of the limiting boxes (2) one by one, wherein a U-shaped clamping groove (9) is formed in the side face, opposite to the side wall of each limiting steel plate (8) and the side wall of each limiting box (2), a rotatable circular fastening steel sheet (10) is clamped in each U-shaped clamping groove (9), one end of a fastening bolt (3) penetrates through the side wall of each limiting box (2) and is connected with the circular fastening steel sheet (10), and the fastening bolt (3) is in threaded fit with the side wall of each limiting box (2); two spacing casees (2) vertically arrange and the opening direction is the same, and connect through strainometer (5) between two spacing casees (2).
2. The concrete material uniaxial tension constitutive relation test device according to claim 1, wherein the limiting box (2) is of a rectangular structural design, and strain gauges (5) are arranged on four side walls.
3. The concrete material uniaxial tension constitutive relation testing device according to claim 1, wherein the fastening bolt (3) is welded and fixed with the round fastening steel sheet (10).
4. The concrete material uniaxial tension constitutive relation test device according to claim 1, wherein a bracket (6) is arranged on the outer side wall of one limiting box, an angle steel (4) corresponding to the bracket (6) is arranged on the outer side wall of the other limiting box, the base of the strain gauge (5) is fixed in the bracket (6), and the extending end of the strain gauge (5) is fixed on the angle steel (4).
5. The concrete material uniaxial tension constitutive relation test device according to claim 1, wherein the limiting box (2) comprises a first limiting box (21) and a second limiting box (22) which are arranged up and down, and the two end bearing connecting pieces (1) are respectively arranged at the top of the first limiting box and the bottom of the second limiting box.
6. The concrete material uniaxial tension constitutive relation test device according to claim 5, wherein the end bearing connecting piece (1) and the limiting box (2) are uniformly provided with connecting lifting lugs with matched numbers and types around the circumference and are connected through bolts.
7. The concrete material uniaxial tension constitutive relation testing device according to claim 5, wherein the end bearing connecting piece (1) is connected with the limiting box (2) in a welding mode.
8. The concrete material uniaxial tension constitutive relation testing device according to claim 1, wherein the outer side surface of the end bearing connecting piece (1) is a plane for loading a pressure test loading device or a lifting lug for loading a tension test loading device.
9. The concrete material uniaxial tension constitutive relation testing device according to claim 1, wherein the minimum specification of the fastening bolt (3) is M16, and the performance grade is not lower than 8.8.
10. The concrete material uniaxial tension constitutive relation test device according to claim 1, wherein rib plates are arranged on the outer wall of the limiting box (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710959783.XA CN107782621B (en) | 2017-10-16 | 2017-10-16 | Concrete material uniaxial tension constitutive relation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710959783.XA CN107782621B (en) | 2017-10-16 | 2017-10-16 | Concrete material uniaxial tension constitutive relation test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107782621A CN107782621A (en) | 2018-03-09 |
| CN107782621B true CN107782621B (en) | 2020-10-09 |
Family
ID=61434847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710959783.XA Active CN107782621B (en) | 2017-10-16 | 2017-10-16 | Concrete material uniaxial tension constitutive relation test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107782621B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624066B (en) * | 2020-05-25 | 2021-08-31 | 哈尔滨工业大学 | Auxiliary bonding tool and method for testing out-of-plane tensile test of three-dimensional woven composite material |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004271289A (en) * | 2003-03-07 | 2004-09-30 | Civil Engineering Research Institute Of Hokkaido | Uniaxial tensile tester for concrete |
| CN202041421U (en) * | 2011-03-01 | 2011-11-16 | 天津钢管集团股份有限公司 | Clamping tool for continuous elongating-compressing test |
| CN202770703U (en) * | 2012-09-13 | 2013-03-06 | 葛洲坝集团试验检测有限公司 | Self-adjusting clamp for concrete tensile tests |
| CN103512799A (en) * | 2013-10-22 | 2014-01-15 | 葛洲坝集团试验检测有限公司 | Flexible holding device for concrete tensile test |
| CN203405379U (en) * | 2013-08-09 | 2014-01-22 | 金陵科技学院 | Extensometer fixing device with adjustable scale distance in overall process of axial pulling and pressing |
| CN104181034A (en) * | 2014-08-29 | 2014-12-03 | 中国建筑材料科学研究总院 | Device for testing performance of concrete under axial tensile stress |
| CN104596844A (en) * | 2015-01-28 | 2015-05-06 | 南京理工大学 | Adjustable dumbbell-shaped test piece tensile test chuck |
| CN104634656A (en) * | 2015-01-29 | 2015-05-20 | 南京理工大学 | Composite uniaxial tension experiment fixture |
| KR20150055781A (en) * | 2013-11-14 | 2015-05-22 | 한국건설기술연구원 | Apparatus and Method for tensile strength test of early age concrete |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2066136U (en) * | 1989-08-01 | 1990-11-21 | 大连理工大学 | Rigidity supplementary device for fragile material direct tensile test |
| CN103163016A (en) * | 2013-02-27 | 2013-06-19 | 武汉大学 | Auxiliary device for carrying out axial tension test on quasi brittle materials |
| CN104165802A (en) * | 2014-08-21 | 2014-11-26 | 四川富临集团成都机床有限责任公司 | Fixture for tensile test for tensile machine |
| CN105424478B (en) * | 2015-12-01 | 2018-05-08 | 浙江工业大学 | Concrete component applies the experimental rig of axial tension load |
| CN106483016A (en) * | 2016-08-22 | 2017-03-08 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of concrete sample uniaxial tension Complete stress-strain curve experimental rig |
-
2017
- 2017-10-16 CN CN201710959783.XA patent/CN107782621B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004271289A (en) * | 2003-03-07 | 2004-09-30 | Civil Engineering Research Institute Of Hokkaido | Uniaxial tensile tester for concrete |
| CN202041421U (en) * | 2011-03-01 | 2011-11-16 | 天津钢管集团股份有限公司 | Clamping tool for continuous elongating-compressing test |
| CN202770703U (en) * | 2012-09-13 | 2013-03-06 | 葛洲坝集团试验检测有限公司 | Self-adjusting clamp for concrete tensile tests |
| CN203405379U (en) * | 2013-08-09 | 2014-01-22 | 金陵科技学院 | Extensometer fixing device with adjustable scale distance in overall process of axial pulling and pressing |
| CN103512799A (en) * | 2013-10-22 | 2014-01-15 | 葛洲坝集团试验检测有限公司 | Flexible holding device for concrete tensile test |
| KR20150055781A (en) * | 2013-11-14 | 2015-05-22 | 한국건설기술연구원 | Apparatus and Method for tensile strength test of early age concrete |
| CN104181034A (en) * | 2014-08-29 | 2014-12-03 | 中国建筑材料科学研究总院 | Device for testing performance of concrete under axial tensile stress |
| CN104596844A (en) * | 2015-01-28 | 2015-05-06 | 南京理工大学 | Adjustable dumbbell-shaped test piece tensile test chuck |
| CN104634656A (en) * | 2015-01-29 | 2015-05-20 | 南京理工大学 | Composite uniaxial tension experiment fixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107782621A (en) | 2018-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105300718A (en) | Anchoring structure pullout test device and test method | |
| CN102692351B (en) | Test bed and application method thereof to testing mechanical properties of inclined bolt | |
| CN105424481A (en) | Threaded fastener guarantee load testing apparatus and testing method thereof | |
| CN109163979B (en) | Adjustable detachable large-eccentricity pressed column testing device and method | |
| CN203849100U (en) | Ball hinge fixing and supporting structure for creeping instrument | |
| CN107782621B (en) | Concrete material uniaxial tension constitutive relation test device | |
| CN204924892U (en) | Effect test device is adhered to in uniaxial extension effect protective coating down | |
| CN203785964U (en) | Digital portable press | |
| CN109030242B (en) | Electromagnetic power rock direct shear apparatus and operation method | |
| CN105674862A (en) | Centrifugal pump concentricity measuring device | |
| CN208060290U (en) | A kind of multifunctional material mechanics testing machine | |
| JP2012002790A (en) | Horseshoe type (two division and u-shape) tensile/compressive load meter, pressure receiving half-split chuck, and pressure unit | |
| CN204142569U (en) | Concrete splitting tensile strength test clamp | |
| CN203869950U (en) | Device for testing changes of mechanical properties of epoxy resin in filling type anchorage device | |
| CN103115761B (en) | 1500t vertical united force testing machine instability preventing device | |
| CN212903682U (en) | Laboratory detects frictional resistance's of prestressed anchorage mouth and horn mouth device | |
| CN205352856U (en) | Realize direct tensile test device of rock sample | |
| CN202928893U (en) | Bending rigidity test device | |
| CN112098220A (en) | Self-balancing constant loading device for researching creep performance of steel pipe concrete member | |
| CN203672767U (en) | Gravity type dial indicator clamp for steel bar bond stress test | |
| CN203116718U (en) | Measuring tool for high-pressure fuel pipe assembly | |
| CN220473233U (en) | Straight tube tensile testing device | |
| CN205201368U (en) | Vibration test clamp | |
| CN111650039A (en) | A pipeline clamping device for fixing portable micron appearance of impressing | |
| CN206161425U (en) | Vice torsion preparation fixing device of bolted connection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |