CN209014383U - Deck paving interlayer shear strength test code test fixture - Google Patents
Deck paving interlayer shear strength test code test fixture Download PDFInfo
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- CN209014383U CN209014383U CN201821643824.0U CN201821643824U CN209014383U CN 209014383 U CN209014383 U CN 209014383U CN 201821643824 U CN201821643824 U CN 201821643824U CN 209014383 U CN209014383 U CN 209014383U
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Abstract
The utility model relates to deck paving interlayer shear strength test code test fixtures, including stress platform, the stress platform is the triangular prism of an isosceles right triangle shape, it is characterized by: being fixed with a cylinder clamp on the side where stress platform bevel edge, the cylinder clamp is made of two capable of opening and closing semicircular cylinders.The utility model devises the platform that can obtain 45 ° of angles of shear on existing standard specimen fixture, and fixture is designed to the cylindrical shape that can be opened and closed, make cylindrical standard test specimen by folder Lao, test specimen is set fast to install and replace, the more convenient detection for completing shear stress, structure is simple, low cost, it is easy to accomplish.
Description
Technical field
The utility model belongs to fixture, is a kind of standard specimen for the test measurement of different materials interlayer shearing stress distribution
Fixture.
Background technique
In bridge deck structure, for the functional requirement for meeting different structure layer, it is often used different materials composition composite construction.But
Modulus difference between different materials is huge, will cause the biggish shear stress of material interlayer, influences the bonding between different materials
Property, and then influence the service performance of bridge floor.For evaluation bridge deck structure performance, need to study composite construction boundary layer shear behavior,
It is external mainly to use mechanical analysis, and domestic is more then to pass through shearing test research different materials interlayer using experimental study
Shearing stress distribution situation.The domestic common cutting method of shearing test is broadly divided into staight scissors and tiltedly cuts.
Oblique scissor test is easier to realize the shear strength research of boundary layer.Oblique scissor test is matched generally by self-made clamp
It closes loading system to complete, " the Cement Concrete bridge asphalt pavement layer anti-shear performance research based on oblique scissor test " (Wuhan science and engineering is big
Learn journal, in November, 2015,11 phases of volume 37,48-53 pages) a kind of oblique scissor test fixture is disclosed, using upper and lower two wedge shapes
Steel collet, two collet bottom surfaces are parallel to each other.Test specimen is located in wedge space, although fixture is provided with fastening screw to fix
The bad rigid displacement of test specimen, but test specimen is not completely closed, therefore is likely to occur offset, Er Qiecong during loading
From the point of view of its disclosed document, fixture is only applicable to rectangular test specimen.
It is therefore desirable to design a kind of piece fixture, so that it is not only able to satisfy oblique scissor test research and require, moreover it is possible to is firm
Fixed test specimen, very easily completes oblique scissor test.
Utility model content
The utility model tiltedly cuts the defects of experimental method and requirement for existing, provides a kind of shearing test pitch coagulation
Native standard specimen fixture, is fixed conveniently, using simple.
The design principle of the utility model: for oblique scissor test standard specimen fixture, cylindrical standard test specimen is needed to press from both sides
Oblique scissor test is carried out after firmly again, so the fixture first is that need to clip test specimen, just carries out tiltedly cutting examination second is that clipping demander after test specimen
It tests.
The utility model the specific technical proposal is:
Deck paving interlayer shear strength test code test fixture, including stress platform, the stress platform are one
The triangular prism of isosceles right triangle shape a, it is characterised in that: circle is fixed on the side where stress platform bevel edge
Tubular fixture, the cylinder clamp are made of two capable of opening and closing semicircular cylinders.
The cylinder clamp is spliced by two pieces of semi-circular sheet steels, is equipped with closing device, folding dress in edge joint position
It sets including lug with holes, two pieces of semi-circular sheet steels are fixed by nut in the hole that screw passes through on lug.
One piece in two pieces of semi-circular sheet steels is fixed with the side where stress platform bevel edge.
The stress platform is steelwork, and one piece in two pieces of semi-circular sheet steels passes through three pieces of junction steel plates and stress
Side where platform bevel edge is welded and fixed.
The junction steel plate is triangular steel plate.
For convenience of placing and take out standard specimen, cylinder clevis is formed by two capable of opening and closing semicircular cylinders when design fixture
Tool, and it is provided with closing device.When starting test, the state that closing device is adjusted to out opens fixture, test specimen is put into
In cylinder clamp, closing device is then adjusted to the state closed, fixture closure, standard specimen is caught in, and entire test specimen
In fixture, the fixture with test specimen can then carry out oblique scissor test.
There is scholar the study found that the brake force of automobile itself can achieve the 50% of self weight during automobile emergency brake
To 60% or more, dry asphalt concrete pavement, peak adhesion coefficient be can reach 0.8~0.9 or so, the most limit the case where
1.0, take the limit that can obtain the angle of shearTherefore 45 ° of angles of shear as oblique scissor test are selected.To obtain
Stress Platform Designing is the triangular prism that bottom surface is isosceles right triangle by 45 ° of the angle of shear, and fixture is vertically set on
Side where lumbar triangle shape bevel edge.
When carrying out oblique scissor test, two complete uses of oblique scissor test standard specimen fixture are needed, imposed load are applied to flat
Side where platform isosceles right triangle right-angle side.
The utility model devises the platform that can obtain 45 ° of angles of shear on existing standard specimen fixture, and will
Fixture is designed to the cylindrical shape that can be opened and closed, and makes cylindrical standard test specimen by folder Lao, keeps test specimen fast fixed and replacement, more
Facilitate the detection for completing shear stress, structure is simple, low cost, it is easy to accomplish.
Detailed description of the invention
Fig. 1 the utility model structural front view,
A direction view in Fig. 2 Fig. 1,
The main view of Fig. 3 when the utility model is used.
Wherein in figure each label list it is as follows:
1- stress platform, 2- semi-circular sheet steel, 3- screw, 4- nut, 5- triangular steel plate, 6- lug.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings.
As shown in Figure 1 and Figure 2, deck paving interlayer shear strength test code test fixture, including an isosceles right angle three
The triangular prism stress platform 1 of angular shape is steel material, and side and horizontal plane are at 45 ° where the bevel edge of stress platform 1,
A cylinder clamp is fixed on side where 1 bevel edge of stress platform, the cylinder clamp is by two pieces of semi-circular sheet steels 2
It is spliced, is equipped with closing device in edge joint position, closing device includes lug 6 with holes, and screw 3 passes through the hole on lug 6
It is by nut 4 that two pieces of semi-circular sheet steels 2 are fixed.One of semi-circular sheet steel 2 is flat by three pieces of triangular steel plates 5 and stress
Side where 1 bevel edge of platform is welded and fixed.
Experimental implementation process:
The wherein screw 3 of an edge joint position closing device, nut 4 are taken off, two semi-circular sheet steels are opened and closed with opposite and filled
It is set to axis, opens cylinder clamp, the cylindrical standard test specimen made is put into cylindrical fixture, allow two semicircles
Steel plate split is inserted into screw 3 and tightens nut 4, then is put into another cylindrical standard test specimen with same method
In another cylinder clamp.Then two fixtures are placed into loading apparatus according to shown in Fig. 3, using loading apparatus to by
Power platform 1, which is further applied load, can be completed oblique scissor test.
Claims (5)
1. deck paving interlayer shear strength test code test fixture, including stress platform, the stress platform are one etc.
The triangular prism of waist right-angle triangle a, it is characterised in that: cylinder is fixed on the side where stress platform bevel edge
Clamp, the cylinder clamp are made of two capable of opening and closing semicircular cylinders.
2. deck paving interlayer shear strength test code test fixture according to claim 1, it is characterised in that: described
Cylinder clamp is spliced by two pieces of semi-circular sheet steels, is equipped with closing device in edge joint position, closing device includes with holes
Two pieces of semi-circular sheet steels are fixed by nut in lug, the hole that screw passes through on lug.
3. deck paving interlayer shear strength test code test fixture according to claim 2, it is characterised in that: described
One piece in two pieces of semi-circular sheet steels is fixed with the side where stress platform bevel edge.
4. deck paving interlayer shear strength test code test fixture according to claim 3, it is characterised in that: described
Stress platform is steelwork, and one piece in two pieces of semi-circular sheet steels is by where three pieces of junction steel plates and stress platform bevel edge
Side be welded and fixed.
5. deck paving interlayer shear strength test code test fixture according to claim 4, it is characterised in that: described
Junction steel plate is triangular steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821643824.0U CN209014383U (en) | 2018-10-10 | 2018-10-10 | Deck paving interlayer shear strength test code test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821643824.0U CN209014383U (en) | 2018-10-10 | 2018-10-10 | Deck paving interlayer shear strength test code test fixture |
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| Publication Number | Publication Date |
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| CN209014383U true CN209014383U (en) | 2019-06-21 |
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| CN201821643824.0U Active CN209014383U (en) | 2018-10-10 | 2018-10-10 | Deck paving interlayer shear strength test code test fixture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307584A (en) * | 2019-11-22 | 2020-06-19 | 浙江大学 | Auxiliary device for right-angle component mechanical loading test and test device |
-
2018
- 2018-10-10 CN CN201821643824.0U patent/CN209014383U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307584A (en) * | 2019-11-22 | 2020-06-19 | 浙江大学 | Auxiliary device for right-angle component mechanical loading test and test device |
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