CN106483010B - Support for beam-columns experimental provision - Google Patents
Support for beam-columns experimental provision Download PDFInfo
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- CN106483010B CN106483010B CN201610817446.2A CN201610817446A CN106483010B CN 106483010 B CN106483010 B CN 106483010B CN 201610817446 A CN201610817446 A CN 201610817446A CN 106483010 B CN106483010 B CN 106483010B
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- lower plywood
- top plate
- fixed vertical
- eccentricity
- plate
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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
- G01N3/02—Details
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- 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
- G01N2203/0023—Bending
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- 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 present invention relates to a kind of supports for beam-columns experimental provision, the fixation transverse slat lower part of the front and rear sides of top plate is respectively equipped with top plate fixed vertical plate, adjusting bolt placed in the middle is equipped in the internal thread hole of the top plate fixed vertical plate, the left side and/or right side of top plate are equipped with top plate graduated scale;The lower part of top plate is vertically equipped with a upper edge of a knife;Lower plywood is fixedly connected on top plate lower part and is located between two pieces of top plate fixed vertical plates, ribbed stiffener is equipped between the lower plywood fixed vertical plate and lower plywood of lower part at left and right sides of lower plywood, it is provided with internal thread hole in lower plywood fixed vertical plate and its interior eccentricity that is equipped with adjusts bolt, the front side of lower plywood and/or rear side are equipped with lower plywood graduated scale;The top of lower plywood is equipped with a lower knife groove corresponding with the upper edge of a knife;The support is arranged in pairs.The present invention can be realized it is unidirectional be freely rotated, test specimen is in contact, it can be achieved that one-directionally rotating, while facilitating adjustment eccentricity with the lower plywood of support when experiment.
Description
Technical field
The present invention relates to a kind of experimental provisions for field of civil engineering, are particularly used for beam-columns experiment
The support of device.
Background technique
It is locally steady that pull-down component monolithic stability, pull-down component are mainly covered in the illustrative experimental project of steel construction teaching
The contents such as fixed, flexural member overall collapse and connection, the not experimental project of bending component.In steel construction teaching setting, grind
Studying carefully overall stability in bending component plane is usually to study Unilateral Pressing-bending component.Unilateral Pressing-bending component is in addition to by axial compressive force
Except, it is axially loaded to need to carry out bias for the effect also by unidirectional moment of flexure, be unidirectionally freely rotated so being required to realize
And facilitate the support for adjusting eccentricity.Currently, research bending component plane in monolithic stability using way knife edge hinged-support come
The hinged boundary condition in end is simulated, by upper slitter oralia, intermediate plate and oralia is cut and forms, in the edge of a knife vertical with eccentric direction
Heart line between test specimen cross-section centroid at a distance from for load eccentricity.But there are following several for illustrative experiment for this support
A problem: (1) Unilateral Pressing-bending component only needs to apply the eccentricity in a direction, realizes that one direction freely turns so only requiring
It is dynamic;(2) it adjusts eccentricity difficulty and is unable to control the accuracy of eccentricity;(3) test specimen non-eccentricity direction can not accurately be adjusted
Between two parties.
Summary of the invention
The purpose of the present invention provides a kind of for beam-columns exactly to overcome the problems of the above-mentioned prior art
The support of experimental provision, component can accurately adjust eccentricity in eccentric direction when experiment loads, placed in the middle in non-eccentricity direction, real
Overall collapse in existing moment of flexure plane, beam-ends close to be freely rotated, can not reverse around moment of flexure direction, can free warpage preferably about
Beam condition improves the accuracy of experimental result.
In order to solve the above-mentioned technical problem, the present invention is implemented as follows:
A kind of support for beam-columns experimental provision, it is characterised in that: it includes top plate, lower plywood, fixation
Transverse slat, lower plywood fixed vertical plate, adjusts bolt, eccentricity adjusting bolt and ribbed stiffener at top plate fixed vertical plate between two parties;
The front and rear sides of top plate 1 are separately connected one piece of fixed transverse slat 3, and every piece of fixed 3 lower part of transverse slat is respectively equipped with one piece
Top plate fixed vertical plate 4 is provided with internal thread hole in the top plate fixed vertical plate 4, be equipped in internal thread hole it is placed in the middle adjust bolt 6,
The left side and/or right side of top plate 1 are equipped with top plate graduated scale 9;The lower part of top plate 1 is vertically equipped with a upper edge of a knife 11;
Lower plywood 2 is fixedly connected on 1 lower part of top plate and is located between two pieces of top plate fixed vertical plates 4, lower plywood 2 or so
The lower part of two sides is separately connected one piece of lower plywood fixed vertical plate 5, is equipped with and puts more energy between the lower plywood fixed vertical plate 5 and lower plywood 2
Rib 8, be provided in lower plywood fixed vertical plate 5 internal thread hole and its in be equipped with eccentricity and adjust bolt 7, the front side of lower plywood 2 and/or
Rear side is equipped with lower plywood graduated scale 10;The top of lower plywood 2 is equipped with a lower knife groove 12 corresponding with the upper edge of a knife;
The symmetry axis of internal thread hole and lower plywood in the top plate fixed vertical plate;In lower plywood fixed vertical plate
The vertical symmetry axis in the test specimen face of internal thread hole corresponding thereto;The support is arranged in pairs.
The support for beam-columns experimental provision, it is characterised in that: the upper edge of a knife is the V-shaped edge of a knife,
The lower knife groove is V-shaped cutter groove.
The beneficial effects of the present invention are: support lower plywood is equipped with graduated scale, the lower part at left and right sides of lower plywood is welded respectively
One piece of lower plywood fixed vertical plate is connect, the eccentricity of two sides adjusts bolt and withstands test specimen center by lower plywood fixed vertical plate,
Rotation bolt can make test specimen mobile in eccentric direction, can be convenient and accurately adjust eccentricity.
Support top plate is equipped with graduated scale, and transverse slat is welded and fixed in two sides, and the adjusting bolt placed in the middle of two sides passes through top plate
Fixed vertical plate withstands lower plywood center, and rotating the bolt placed in the middle that adjusts can make lower plywood together with test specimen jointly in non-eccentricity side
To movement, it can be convenient and accurately adjust test specimen in the placed in the middle of non-eccentricity direction.
Effective lateral support is provided, can prevent component from the outer unstability of plane occurs.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:
Fig. 1 is axonometric drawing of the invention.
Fig. 2 is the top view of top section of the invention.
Fig. 3 is A-A cross-sectional view in Fig. 2.
Fig. 4 is 1-1 cross-sectional view in Fig. 2.
Fig. 5 is the top view of underclad portion of the invention.
Fig. 6 is A-A cross-sectional view in Fig. 5.
Fig. 7 is 1-1 cross-sectional view in Fig. 5.
Fig. 8 is of the invention using installation diagram.
Fig. 9 is the structural schematic diagram that support of the present invention is applied in the experimental provision of beam-columns.
Figure 10 is the axonometric drawing of jack pinboard.
Figure 11 is the scheme of installation of jack pinboard.
Figure 12 is the axonometric drawing of lateral support.
Figure 13 is the partial enlarged view of junction between support and jack pinboard
In figure, fixed 4. top plate fixed vertical plate of transverse slat, the 5. lower plywood fixed vertical plate of 1. top plate, 2. lower plywood 3.
6. adjusting 7. eccentricity of bolt between two parties to adjust on 8. ribbed stiffener of bolt, 9. top plate graduated scale, 10. lower plywood graduated scale 11.
17. jack pinboard of the edge of a knife 12. lower knife groove, 13. bolt hole, 14. test specimen, 15. support, 16. jack, 18. side is to branch
Support 19. reaction frame, 20. jack loading head, 21. edge of a knife plate, 22. inner sleeve, 23. outer sleeve, 24. connecting plate, 25. screw rod
26. 29. sleeve of fixing bolt 27. nut, 28. bottom plate, 30. gypsum.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of support for beam-columns experimental provision as shown in Figure 1:, it includes top plate, lower plywood, fixed cross
Plate, lower plywood fixed vertical plate, adjusts bolt, eccentricity adjusting bolt and ribbed stiffener at top plate fixed vertical plate between two parties;
It is as in Figure 2-4: to be opened on top plate there are four bolt hole 13, the front and rear sides of top plate 1 are separately connected one piece admittedly
Determine transverse slat 3, every piece of fixed 3 lower part of transverse slat is respectively equipped with one piece of top plate fixed vertical plate 4, is provided in the top plate fixed vertical plate 4
Internal thread hole, be equipped in internal thread hole it is placed in the middle adjust bolt 6, the left side and/or right side of top plate 1 are equipped with top plate graduated scale 9;
The lower part of top plate 1 is vertically equipped with a upper edge of a knife 11, and the upper edge of a knife is the V-shaped edge of a knife;
As illustrated in figs. 5-7: lower plywood 2 be fixedly connected on 1 lower part of top plate and be located at two pieces of top plate fixed vertical plates 4 it
Between, the lower part of 2 left and right sides of lower plywood is separately connected one piece of lower plywood fixed vertical plate 5, the lower plywood fixed vertical plate 5 and lower plywood
It is equipped with ribbed stiffener 8 between 2, internal thread hole is provided in lower plywood fixed vertical plate 5 and its interior eccentricity that is equipped with adjusts bolt 7, lower layer
The front side of plate 2 and/or rear side are equipped with lower plywood graduated scale 10;The top of lower plywood 2 is equipped with one and corresponding with the upper edge of a knife cuts
Slot 12, the lower knife groove are V-shaped cutter groove;
The symmetry axis of internal thread hole and lower plywood in the top plate fixed vertical plate;In lower plywood fixed vertical plate
The vertical symmetry axis in the test specimen face of internal thread hole corresponding thereto;The support is arranged in pairs.
Internal thread hole, position of opening and 2 symmetry axis of lower plywood are opened in the top plate fixed vertical plate 4, are matched
Eccentricity adjust bolt 7 to adjust test specimen be not added on eccentricity direction in.In being opened in the lower plywood fixed vertical plate 5
Threaded hole, the vertical symmetry axis in the test specimen face of position of opening corresponding thereto match the bolt 6 placed in the middle that adjusts to adjust
The eccentricity of test specimen.
The present invention is used cooperatively with jack reaction frame, the Unilateral Pressing-bending experiment of girder steel is carried out, the two of tested test specimen
Support of the present invention is installed at end respectively, and is loaded by jack reaction frame, and the mechanics such as bearing capacity, the deformation of test specimen spy is tested
Sign, specific work process are as follows:
As shown in figure 8, support of the present invention using when be all to use in pairs, two supports are placed on the upper of test specimen 14
Lower both ends, test specimen 14 have the side of lower plywood graduated scale 10 to flush and centering along one side and the lower plywood 2 of eccentric direction.It is logical
The eccentricity for crossing rotation 2 two sides of lower plywood adjusts bolt 7 and observes lower plywood graduated scale 10 to adjust required eccentricity.It adjusts
After having saved eccentricity, eccentricity adjusts bolt and holds out against test specimen.It is adjusted by the adjusting bolt 6 placed in the middle of 1 two sides of top plate
Lower plywood 2 and test specimen keep test specimen placed in the middle in non-eccentricity direction, and after the completion of adjusting, the adjusting bolt 6 placed in the middle of two sides is pushed up
Tight lower plywood 2.
The above-mentioned description to embodiment is for that can understand and apply the invention convenient for those skilled in the art.
Person skilled in the art obviously easily can make modification to embodiment, and the principle of the present invention is applied to other
In embodiment without having to go through creative labor.Therefore, the present invention is not limited to embodiment here, those skilled in the art's roots
According to announcement of the invention, the improvement made for the present invention and modification all should be within protection scope of the present invention.
Embodiment 2
It is as shown in Figure 9: a kind of experimental provision of beam-columns, including reaction frame 19, jack 16, jack pinboard
17, support 15 and lateral support 18;Jack 16 is fixed on reaction frame 19, jack 16 is passed power by jack pinboard 17
Onto support 15, support 15 is arranged in pairs in 14 both ends of test specimen, and lateral support 18 is arranged in the middle part of test specimen.The reaction frame 19 is
The dedicated reaction frame in laboratory is generally made of crossbeam, column, pedestal, jacking system, hydraulic system, adjustment cushion block.General experiment
Room can process the reaction frame of suitable dimension, and " reaction frame " is the prior art.The jack 16 matches with reaction frame 19
Hydraulic jack, the jack 16 include the jack loading head 20 positioned at jack lower part;
As shown in figs. 10-11: the jack pinboard includes bottom plate 28 and the sleeve 29 that is welded on bottom plate, on bottom plate
It opens there are four bolt hole 13, for plate 1 is connect at the middle and upper levels with support 15, jack loading head 20 is placed in sleeve 22, jack
With gypsum 30 come filling chink between loading head 20 and sleeve 22;
As shown in figs. 1-7: the support 15 include top plate 1, lower plywood 2, fixed transverse slat 3, top plate fixed vertical plate 4,
Lower plywood fixed vertical plate 5, bolt 6, eccentricity adjusting bolt 7, ribbed stiffener 8, top plate graduated scale 9 and the lower plywood placed in the middle of adjusting are carved
Spend ruler 10;It is opened on top plate there are four bolt hole 13, one piece of fixed transverse slat 3 is respectively welded in the front and rear sides of top plate, and every piece solid
Determine 3 lower part of transverse slat and one piece of top plate fixed vertical plate 4 is respectively welded, is provided with internal thread hole, internal screw thread in the top plate fixed vertical plate 4
Adjusting bolt 6 placed in the middle is equipped in hole, top plate graduated scale 9 is set to the left side and/or right side of top plate 1;The lower plywood 2 is located at
It is held out against between two pieces of top plate fixed vertical plates 4 and by adjusting bolt 6 between two parties, the lower part of 2 left and right sides of lower plywood is respectively welded
One piece of lower plywood fixed vertical plate 5 is equipped with ribbed stiffener 8, lower plywood fixed vertical plate 5 between the lower plywood fixed vertical plate 5 and lower plywood 2
On be provided with internal thread hole and its in be equipped with eccentricity adjust bolt 7, lower plywood graduated scale 10 be set to lower plywood 2 front side and/or
Rear side, the vertical symmetry axis in the test specimen face of internal thread hole corresponding thereto in lower plywood fixed vertical plate 5, according to lower plywood 2
On lower plywood graduated scale 10 match and placed in the middle adjust bolt 6 to adjust the eccentricity of test specimen 14;The top plate is fixed perpendicular
The symmetry axis of internal thread hole and lower plywood 2 on plate 4 matches eccentricity according to top plate graduated scale 9 and adjusts bolt 7
Come adjust test specimen 14 non-eccentricity away from direction in;The support 15 is arranged in pairs;
It is as shown in figure 12: the lateral support 18 include a pair of of edge of a knife plate 21, inner sleeve 22, outer sleeve 23, connecting plate 24,
Screw rod 25, fixing bolt 26 and nut 27;Edge of a knife plate 21, which is arranged in pairs, clamps 28 two sides of test specimen test specimen, and passes through screw rod 25 and spiral shell
Mother 27 is fixed, and 22 one end of inner sleeve is connect with edge of a knife plate 21, and 22 other end of inner sleeve is stuck in 23 one end of outer sleeve and by solid
Determine bolt 26 to hold out against, 23 vertical direction of outer sleeve just blocks inner sleeve 22, and it is inclined convenient for adjusting that horizontal direction leaves mobile space
The heart away from when inner sleeve 22 23 other end of mobile outer sleeve and 24 side of connecting plate weld, 24 other side of connecting plate is welded on counter-force
On the inside of the upright bar of frame 19;
As shown in figure 13: 16 upper end of jack is set to the upper beam lower part of reaction frame 19, and jack loading head 20 is set
In in sleeve 29, pass through 30 filling chink of gypsum, the bottom plate of jack pinboard 17 between jack loading head 20 and sleeve 29
28 and the top plate 1 of a support 15 be bolted, the top plate 1 of another support 15 is set on the pedestal of reaction frame 19
Portion, the eccentricity that the both ends of test specimen 14 are located at two supports 15 are adjusted between bolt 7.
Test specimen 14 use H-type section test specimen, jack 16 is connect with reaction frame 19, the top plate 1 of support 15 respectively with
Jack pinboard 17 is connected with 19 pedestal of reaction frame, and jack loading head 20 is placed in 17 sleeve 29 of jack pinboard.Examination
Part 14 is placed between the top plate 1 of support 15, there is the side of lower plywood graduated scale 10 with lower plywood 2 along one side of eccentric direction
It flushes and centering.Then edge of a knife plate 21 is stuck in 28 liang of side positions of test specimen and fixation is tightened by 25 nut 27 of screw rod.Outer sleeve
23 is fixed by connecting plate 24 and reaction frame 1, and inner sleeve 22 just blocks with outer sleeve 23 with the socket of outer sleeve 23 and vertical direction
Firmly.
It is required to adjust by rotating the eccentricity adjusting bolt 7 of 2 two sides of lower plywood and observing lower plywood graduated scale 10
Eccentricity.After having adjusted eccentricity, eccentricity adjusts bolt and holds out against test specimen 14, and the fixing bolt 26 tightened on outer sleeve 23 pushes up
Tight 22 two sides of inner sleeve.Lower plywood 2 and test specimen 14 are adjusted by the adjusting bolt 6 placed in the middle of 1 two sides of top plate, test specimen 14 is made to exist
Non-eccentricity direction is placed in the middle, and after the completion of adjusting, the adjusting bolt 6 placed in the middle of two sides holds out against lower plywood 2.
The above-mentioned description to embodiment is for that can understand and apply the invention convenient for those skilled in the art.
Person skilled in the art obviously easily can make modification to embodiment, and the principle of the present invention is applied to other
In embodiment without having to go through creative labor.Therefore, the present invention is not limited to embodiment here, those skilled in the art's roots
According to announcement of the invention, the improvement made for the present invention and modification all should be within protection scope of the present invention.
Claims (2)
1. a kind of support for beam-columns experimental provision, it is characterised in that: it includes top plate, lower plywood, fixed cross
Plate, lower plywood fixed vertical plate, adjusts bolt, eccentricity adjusting bolt and ribbed stiffener at top plate fixed vertical plate between two parties;
The front and rear sides of top plate are separately connected one piece of fixed transverse slat, and it is solid that every piece of fixed transverse slat lower part is respectively equipped with one piece of top plate
Determine riser, internal thread hole is provided in the top plate fixed vertical plate, adjusting bolt placed in the middle, the left side of top plate are equipped in internal thread hole
And/or right side is equipped with top plate graduated scale;The lower part of top plate is vertically equipped with a upper edge of a knife;
Lower plywood is fixedly connected on top plate lower part and is located between two pieces of top plate fixed vertical plates, at left and right sides of lower plywood under
Portion is separately connected one piece of lower plywood fixed vertical plate, and ribbed stiffener is equipped between the lower plywood fixed vertical plate and lower plywood, and lower plywood is solid
Determine to be provided with internal thread hole on riser and its interior eccentricity that is equipped with adjusts bolt, the front side of lower plywood and/or rear side are equipped with lower plywood
Graduated scale;The top of lower plywood is equipped with a lower knife groove corresponding with the upper edge of a knife;
The symmetry axis of internal thread hole and lower plywood in the top plate fixed vertical plate;Interior spiral shell in lower plywood fixed vertical plate
The vertical symmetry axis in the test specimen face of pit corresponding thereto;The support is arranged in pairs;
The support lower plywood is equipped with graduated scale, and it is fixed perpendicular that one piece of lower plywood is respectively welded in the lower part at left and right sides of lower plywood
Plate, the eccentricity of two sides adjust bolt and withstand test specimen center by lower plywood fixed vertical plate, and rotation bolt can make test specimen
It is mobile in eccentric direction, it can be convenient and accurately adjust eccentricity;
The support top plate is equipped with graduated scale, and transverse slat is welded and fixed in two sides, and the adjusting bolt placed in the middle of two sides passes through top plate
Fixed vertical plate withstands lower plywood center, and rotating the bolt placed in the middle that adjusts can make lower plywood together with test specimen jointly in non-eccentricity side
To movement, it can be convenient and accurately adjust test specimen in the placed in the middle of non-eccentricity direction.
2. the support according to claim 1 for beam-columns experimental provision, it is characterised in that: the upper edge of a knife is
The V-shaped edge of a knife, the lower knife groove are V-shaped cutter groove.
Priority Applications (1)
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CN201610817446.2A CN106483010B (en) | 2016-09-12 | 2016-09-12 | Support for beam-columns experimental provision |
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CN201610817446.2A CN106483010B (en) | 2016-09-12 | 2016-09-12 | Support for beam-columns experimental provision |
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CN106483010A CN106483010A (en) | 2017-03-08 |
CN106483010B true CN106483010B (en) | 2019-04-02 |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107132130A (en) * | 2017-06-14 | 2017-09-05 | 黄河科技学院 | A kind of 3 points, four-point bending test machine adjusts fixture with centering |
CN109186980A (en) * | 2018-09-17 | 2019-01-11 | 南京林业大学 | A kind of one-way eccentric loading device of continuously adjustable examination |
CN109946033B (en) * | 2019-01-04 | 2024-01-26 | 吉林省电子信息产品检验研究院 | Three-dimensional vibration test fixture for tablet personal computer and mobile phone |
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CN105241751A (en) * | 2015-09-28 | 2016-01-13 | 哈尔滨工业大学 | Assembly clamper for sandwich structure board lateral compression test |
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2016
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JPH10104144A (en) * | 1996-09-27 | 1998-04-24 | Mamoru Kawaguchi | Apparatus for testing structural material |
CN102809508A (en) * | 2012-07-20 | 2012-12-05 | 上海交通大学 | Load positioning device for structural test |
CN104458408A (en) * | 2014-12-24 | 2015-03-25 | 东南大学 | Novel cylindrical hinge rotating bracket for static force loading experiment |
CN105241751A (en) * | 2015-09-28 | 2016-01-13 | 哈尔滨工业大学 | Assembly clamper for sandwich structure board lateral compression test |
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