CN207730587U - A kind of concrete road surface plate unit fatigue test loading device - Google Patents
A kind of concrete road surface plate unit fatigue test loading device Download PDFInfo
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- CN207730587U CN207730587U CN201721758757.2U CN201721758757U CN207730587U CN 207730587 U CN207730587 U CN 207730587U CN 201721758757 U CN201721758757 U CN 201721758757U CN 207730587 U CN207730587 U CN 207730587U
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- steel plate
- road surface
- loading device
- fatigue test
- plate unit
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Abstract
The utility model discloses a kind of concrete road surface plate unit fatigue test loading device, including L-type counter force wall, two-way foil gauge, Acquisition Instrument and MTS testing machines, it is mutually perpendicular to the side of metope in L-type counter force wall and another side is respectively equipped with hold-down support and movable bearing support, casting concrete plate unit test block in the steel plate framework surrounded by steel plate, and the steel plate framework adapting position is individually fixed on the hold-down support and movable bearing support, symmetrical one end that steel plate framework is fixed on hold-down support end is equipped with MTS testing machines 1, it is pasted on one side surface of concrete slab unit test block and two-way foil gauge is set, the another side of the concrete slab unit test block is vertically equipped with MTS testing machines 2.The fatigue test loading device that the utility model uses, simple and reasonable for structure, easy to operate, test result is accurate, can arbitrarily adjust horizontal pull and the size of vertical load by MTS testing machines, realize the fatigue loading of road surface plate unit under different load amplitudes.
Description
Technical field
The utility model is related to a kind of experiment loading units, more particularly to a kind of concrete road surface plate unit fatigue test
Loading device, the fatigue test that it is suitable for all diagonal cross bond-retarded prestressed concretes road surface plate unit load.Belong to
Mechanical test technical field.
Background technology
With being continuously increased for Heavy Traffic amount, there is higher requirement to the performance of road.Normal concrete road
Face is easy to happen the diseases such as fracture, faulting of slab ends, peeling in seam crossing, influences the driving quality on road surface, and is also needed at abutment joint
A large amount of maintenance work is done, not only cost is big but also semiclosed traffic, these factors is needed to limit light water for the maintenance on road surface
A large amount of uses of the cement concrete road surface on high-grade highway.It is oblique pre- to answer to improve the deficiency of Portland cement concrete pavement
Power concrete road surface is suggested.
In recent years, oblique prestressed concrete is taken seriously.Oblique prestressed concrete pavement presstressed reinforcing steel needs double
To arranged crosswise, constrains the deformation of concrete, improves intensity.It is related with the use of oblique prestressed concrete pavement
Its fatigue problem increasingly displays.Many fatigue tests in relation to concrete flag show the performance of road deck
It is related with vehicle cycle number and stress intensity, this factor is considered in Portland cement concrete pavement design, but to oblique
Less, especially diagonal cross bond-retarded prestressed concrete road surface is studied for prestressed concrete pavement.
Invention content
The utility model provides a kind of fatigue test loading device to overcome deficiency in the prior art, particular for
Diagonal cross bond-retarded prestressed concrete road surface plate unit, which can be accurate, easily measures in different directions external force
The fatigue resistance of concrete road surface plate unit under coupling.
To achieve the goals above, the technical solution of the utility model solution technical problem is：A kind of concrete flag
Unit fatigue test loading device, including L-type counter force wall, two-way foil gauge, Acquisition Instrument and MTS testing machines, are in L-type
Counter force wall is mutually perpendicular to the side of metope and another side is respectively equipped with hold-down support and movable bearing support, the steel plate frame surrounded by steel plate
Pour setting concrete slab unit test block in frame, and by the steel plate framework adapting position be individually fixed in the hold-down support and
On movable bearing support, symmetrical one end that steel plate framework is fixed on hold-down support end is equipped with MTS testing machines 1, the concrete slab list
It is pasted on one side surface of first test block and two-way foil gauge is set, the another side of the concrete slab unit test block is vertically equipped with MTS
Testing machine 2.
The movable bearing support is to be fixed on holder block by pulley to constitute.
The L-type counter force wall fixes the track for being equipped at movable bearing support and matching with the pulley on movable bearing support.
The two-way foil gauge is also connected with the Acquisition Instrument of outer end.
The Acquisition Instrument is connected with computer.
The steel plate framework is a kind of shape in diamond shape, rectangular, oval or circle.
The steel plate framework is diamond shape, rectangular a period of time, and MTS testing machines 1 are in the process by the horizontal pull applied
In, the angle between steel plate framework each two adjacent edge can arbitrarily change.
Due to using the above structure so that the utility model has following advantages and effect compared with prior art：
1, the fatigue test loading device that the utility model uses, simple and reasonable for structure, easy to operate, test result is accurate,
It is further applied load in different directions to concrete slab test block by MTS testing machines, it is pre- effectively to simulate diagonal cross slow cohesion
Fatigue resistance of the prestressed concrete road surface plate unit under different directions load coupling.
2, the fatigue test loading device that the utility model uses, horizontal pull can be arbitrarily adjusted by MTS testing machines
With the size of vertical load, the fatigue loading of road surface plate unit under different load amplitudes is realized.
3, the fatigue test loading device that the utility model uses, roller support is combined with hold-down support, is tested with MTS
Machine stretches, thus it is possible to vary the angle in rhombic steel plate frame between adjacent steel plate realizes the application of different prestressing force sizes.
4, the fatigue test loading device that the utility model uses, by adjusting perpendicular to concrete slab test block in-plane
The load number and amplitude of upper MTS testing machines obtain concrete road surface plate unit under different CYCLIC LOADING numbers and amplitude
Fatigue strength.
Description of the drawings
Invention is further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of main structure diagram of concrete road surface plate unit fatigue test loading device of the utility model；
Fig. 2 is the overlooking structure diagram of the utility model Fig. 1.
Major part in figure：1, L-type counter force wall, 2, movable bearing support, 3, hold-down support, 4, steel plate, 5, steel plate framework, 6, double
To foil gauge, 7, Acquisition Instrument, 8, computer, 9, MTS testing machines 1,10, MTS testing machines 2.
Specific implementation mode
With reference to specific embodiment, the present invention will be further described in detail, but the protection model of the utility model
It encloses and is not limited by specific embodiment, be subject to claims.In addition, with without prejudice to the premise of technical solution of the present invention
Under, any modifications or changes easy to implement to those of ordinary skill in the art made by the utility model fall within this practicality
Within novel right.
Embodiment 1
As shown in attached drawing 1,2, a kind of concrete road surface plate unit fatigue test loading device of the utility model, including L-type
Counter force wall 1, two-way foil gauge 6, Acquisition Instrument 7 and MTS testing machines are mutually perpendicular to the side of metope and another in L-type counter force wall 1
Face is respectively equipped with hold-down support 3 and movable bearing support 2, and setting concrete slab unit is poured in the steel plate framework 5 surrounded by steel plate 4 and is tried
Block, and 5 adapting position of steel plate framework is individually fixed on the hold-down support 3 and movable bearing support 2, steel plate framework 5 is solid
MTS testing machines 19 are equipped with due to the symmetrical one end at 3 end of hold-down support, on a side surface of the concrete slab unit test block
It pastes and two-way foil gauge 6 is set, the another side of the concrete slab unit test block is vertically equipped with MTS testing machines 2 10.
Above-mentioned movable bearing support 2 is to be fixed on holder block by pulley to constitute.
Above-mentioned L-type counter force wall 1 fixes the rail for being equipped at movable bearing support 2 and matching with the pulley on movable bearing support 2
Road.
Above-mentioned two-way foil gauge 6 is also connected with the Acquisition Instrument of outer end 7.
Above-mentioned Acquisition Instrument 7 is connected with computer 8.
Above-mentioned steel plate framework 5 is a kind of shape in diamond shape, rectangular, oval or circle.
Above-mentioned steel plate framework 5 is diamond shape, rectangular a period of time, and MTS testing machines 1 are in the process by the horizontal pull applied
In, the angle between 5 each two adjacent edge of steel plate framework can arbitrarily change.
Illustrate that the operation principle of the utility model is as follows so that steel plate framework 5 is diamond shape as an example：
First, rhombic steel plate frame 5 is fixed on L-type counter force wall 1 using movable bearing support 2 and hold-down support 3.Then,
The casting concrete plate unit test block in the rhombic steel plate frame 5 that steel plate 4 surrounds, and pass through concentric shafts between two adjacent steel plates 4
It is connected, the angle between two adjacent edges is unlimited.After waiting for concrete initial set, by coplanar with rhombic steel plate frame
MTS testing machines 1 on concrete slab test block center of gravity direction apply be equivalent to diagonal cross bond-retarded prestressed concrete road
The horizontal pull of the initial tensioning axle power of presstressed reinforcing steel design value 30% in panel, and pasted in concrete slab unit test block surface
Two-way foil gauge 6, debugs Acquisition Instrument 7 and computer 8 obtains strain initial value.After waiting for concrete final set, then applies and be equivalent to pre- answer
The horizontal pull of power muscle end tensioning axle power.At this point, recycling another MTS testing machine 2 perpendicular to concrete slab test block plane
Vertical load is applied to test block, with simulating vehicle load, and starts the fatigue test of concrete flag test block.By adjusting
The load amplitude of MTS testing machines 1 can adjust the prestressing force applied in diagonal cross bond-retarded prestressed concrete road deck
Size.
In addition, by adjusting the load number and amplitude of the MTS testing machines 2 on concrete slab test block in-plane,
Obtain the fatigue strength of diagonal cross bond-retarded prestressed concrete road surface plate unit under different CYCLIC LOADING numbers and amplitude.
The fatigue loading experimental rig of the utility model, design is simple, reasonable, and highly practical, effect is good, easily promotes.
Claims (7)
1. a kind of concrete road surface plate unit fatigue test loading device, including L-type counter force wall（1）, two-way foil gauge（6）, adopt
Collect instrument（7）And MTS testing machines, it is characterised in that：In L-type counter force wall（1）It is mutually perpendicular to side and the another side difference of metope
Equipped with hold-down support（3）And movable bearing support（2）, by steel plate（4）The steel plate framework surrounded（5）Inside pour setting concrete slab unit
Test block, and by the steel plate framework（5）Adapting position is individually fixed in the hold-down support（3）And movable bearing support（2）On, steel plate
Frame（5）The symmetrical one end for being fixed on 3 end of hold-down support is equipped with MTS testing machines 1（9）, the concrete slab unit test block
It is pasted on one side surface and two-way foil gauge is set（6）, the another side of the concrete slab unit test block is vertically equipped with MTS testing machines
2（10）.
2. a kind of concrete road surface plate unit fatigue test loading device according to claim 1, it is characterised in that：Described
Movable bearing support（2）It is to be fixed on holder block by pulley to constitute.
3. a kind of concrete road surface plate unit fatigue test loading device according to claim 1, it is characterised in that：Described
L-type counter force wall（1）, fix movable bearing support（2）Place is equipped with and movable bearing support（2）On the track that matches of pulley.
4. a kind of concrete road surface plate unit fatigue test loading device according to claim 1, it is characterised in that：Described
Two-way foil gauge（6）Also with the Acquisition Instrument of outer end（7）It is connected.
5. according to a kind of concrete road surface plate unit fatigue test loading device of claim 1 or 4, it is characterised in that：Institute
The Acquisition Instrument stated（7）And computer（8）It is connected.
6. a kind of concrete road surface plate unit fatigue test loading device according to claim 1, it is characterised in that：Described
Steel plate framework（5）For a kind of shape in diamond shape, rectangular, oval or circle.
7. a kind of concrete road surface plate unit fatigue test loading device according to claim 1 or 6, it is characterised in that：Institute
The steel plate framework stated（5）For diamond shape, rectangular a period of time, MTS testing machines 1（9）During by the horizontal pull applied, steel
Plate framework（5）Angle between each two adjacent edge can arbitrarily change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721758757.2U CN207730587U (en) | 2017-12-16 | 2017-12-16 | A kind of concrete road surface plate unit fatigue test loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721758757.2U CN207730587U (en) | 2017-12-16 | 2017-12-16 | A kind of concrete road surface plate unit fatigue test loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207730587U true CN207730587U (en) | 2018-08-14 |
Family
ID=63098653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721758757.2U Expired - Fee Related CN207730587U (en) | 2017-12-16 | 2017-12-16 | A kind of concrete road surface plate unit fatigue test loading device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207730587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932258A (en) * | 2017-12-16 | 2019-06-25 | 沈阳建筑大学 | A kind of concrete road surface plate unit fatigue test loading device |
-
2017
- 2017-12-16 CN CN201721758757.2U patent/CN207730587U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932258A (en) * | 2017-12-16 | 2019-06-25 | 沈阳建筑大学 | A kind of concrete road surface plate unit fatigue test loading device |
| CN109932258B (en) * | 2017-12-16 | 2024-05-07 | 沈阳建筑大学 | Concrete pavement slab unit fatigue test loading device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180814 Termination date: 20211216 |