CN203132915U - Asphalt pavement structure shearing test clamp - Google Patents
Asphalt pavement structure shearing test clamp Download PDFInfo
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- CN203132915U CN203132915U CN 201320068112 CN201320068112U CN203132915U CN 203132915 U CN203132915 U CN 203132915U CN 201320068112 CN201320068112 CN 201320068112 CN 201320068112 U CN201320068112 U CN 201320068112U CN 203132915 U CN203132915 U CN 203132915U
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- shear plate
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Abstract
The utility model belongs to the technical field of testing clamps, and in particular relates to an asphalt pavement structure shearing test clamp used for an asphalt layer and interlayer shearing behavior test on a semi-rigid and flexible base layer asphalt pavement structure and a composite asphalt pavement structure. The clamp comprises a test bed support, a test piece fixing plate and a test piece shear plate, wherein the test bed support is connected with the test piece fixing plate; the bottom end of the test bed support is provided with a sensor support; the test piece shear plate is matched with the test bed support through a clamping groove; a fastening screw is mounted on the outer side face of the test bed support, opposite to the clamping groove; the middle part of the top end of the test piece shear plate is provided with a positioning screw; a test piece mounting hole is formed in the test piece fixing plate and the test piece shear plate; a test piece mounting barrel is arranged on the test piece mounting hole upwards; boss bodies are correspondingly arranged on the outer walls on two sides of the test piece mounting barrel; sensor mounting holes are formed in the boss bodies; and the outer side part of each boss body is provided with a sensor fixing screw.
Description
Technical field
The utility model belongs to the test fixture technical field, particularly relates to a kind of for semi-rigid and flexbile base asphalt pavement structure, combined type asphalt pavement structure, the asphalt pavement structure shear test anchor clamps of the experiment on Shearing Resistance of brea bed and interlayer.
Background technology
In the existing highway of China, bituminous pavement is the principal mode of express highway pavement.Meanwhile, the rut of bituminous pavement also is the topmost pavement disease form of highway with cracking.Studies show that in a large number the shear failure of bituminous concrete and interlayer junction is to cause the main cause of rut and the cracking on road surface.Yet the test instrument of existing various evaluations and analysis asphalt concrete shearing performance is subjected to the influence of test fixture, all can not measure the shearing strength of road surface core layers of material and interlayer effectively.
Most existing road mechanics test instrument, employed test fixture is the structure heaviness mostly, for the requirement of test specimen many restrictions is often arranged, when carrying out shear test, the size of test specimen is all thinner, causes testing preferably the destruction situation the when road surface is actual is cut.In shear history, the influence of the material of anchor clamps that is put to the test own, the deflection of test fixture usually can be very big.And the shearing force that applies in test shear surface common and test specimen has certain angle, like this shear surface produces shear stress except meeting, also can produce the normal stress perpendicular to shear surface simultaneously, this bituminous pavement shear resistance that just makes test obtain is bigger than normal, is not inconsistent with actual value.
The utility model content
At the problem that prior art exists, the utility model provide a kind of simple in structure, intensity is big, in light weight, the test findings deviation is little and the less asphalt pavement structure shear test anchor clamps of distortion in shear history.
To achieve these goals, the utility model adopts following technical scheme: asphalt pavement structure shear test anchor clamps, comprise testing table bearing, test specimen fixed head and test specimen shear plate, be connected by screw bolt and nut between described testing table bearing and the test specimen fixed head, be provided with sensor support base in the bottom of testing table bearing; Described test specimen shear plate matches with the draw-in groove of testing table bearing by testing table bearing inboard; Lateral surface at the testing table bearing relative with draw-in groove is equipped with trip bolt, and described trip bolt matches with the test specimen shear plate; Top middle portion at described test specimen shear plate is provided with dog screw; Be equipped with the test specimen placed hole at described test specimen fixed head and test specimen shear plate, on the test specimen placed hole, lay tube to being outside equipped with test specimen; Described test specimen lay the tube the both sides outer wall on correspondence be provided with the boss body, be provided with the sensor mounting hole at the boss body, the sensor gib screw that matches with the sensor mounting hole is installed at the external sidepiece of boss.
Described test specimen shear plate adopts the light aluminum alloy material.
The beneficial effects of the utility model:
1, the utility model is compared with existing test fixture, material at the test specimen shear plate is selected light aluminum alloy for use, the test specimen shear plate is all increased on strength and stiffness to some extent, guaranteed load transitivity good in the process of the test, also can avoid in process of the test, not cutting disconnected earlier situation because of the excessive test specimen that causes of test specimen shear plate deadweight and take place.
2, the utility model is compared with existing test fixture, structurally installs simply, and is easy to use, wideer to the scope of application of test specimen, and the test findings deviation is less.
Description of drawings
Fig. 1 is asphalt pavement structure shear test clamp structure synoptic diagram of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the side view of Fig. 1;
Among the figure, 1-dog screw, 2-test specimen shear plate, 3-testing table bearing, 4-sensor gib screw, 5-sensor support base, 6-test specimen placed hole, 7-nut, 8-spring washer, 9-bolt, 10-positioning baffle screw, 11-trip bolt, 12-positioning baffle, 13-binding clip, 14-sensor mounting hole, 15-boss body, 16-test specimen fixed head, 17-draw-in groove, 18-test specimen is laid tube.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 1, 2, 3, asphalt pavement structure shear test anchor clamps, comprise testing table bearing 3, test specimen fixed head 16 and test specimen shear plate 2, be connected with nut 7 by bolt 9 between described testing table bearing 3 and the test specimen fixed head 16, between testing table bearing 3 and test specimen fixed head 16, binding clip 13 is installed, bolt 9 between nut 7 and the testing table bearing 3 is provided with spring washer 8, is provided with sensor support base 5 in the bottom of testing table bearing 3; Described test specimen shear plate 2 matches with the draw-in groove 17 of testing table bearing 3 by testing table bearing 3 inboards; Lateral surface at the testing table bearing 3 relative with draw-in groove 17 is equipped with trip bolt 11, and described trip bolt 11 matches with test specimen shear plate 2; In order to limit the move left and right of test specimen shear plate 2 in draw-in groove 17, on test specimen shear plate 2, by positioning baffle screw 10 positioning baffle 12 is installed, positioning baffle 12 is installed near testing table bearing 3 medial surfaces; Top middle portion at described test specimen shear plate 2 is provided with dog screw 1; Be equipped with test specimen placed hole 6 at described test specimen fixed head 16 and test specimen shear plate 2, on test specimen placed hole 6, lay tube 18 to being outside equipped with test specimen; Described test specimen is laid tube 18 and is set to cylindrical structural; Lay at the test specimen of described test specimen shear plate 2 that correspondence is provided with boss body 15 on tube 18 the both sides outer wall, be provided with sensor mounting hole 14 at boss body 15, the sensor gib screw 4 that matches with sensor mounting hole 14 is installed in boss body 15 outside portions.
In process of the test, because the deadweight of test specimen shear plate 2 is excessive, it is disconnected earlier to cause test specimen not cut, and described test specimen shear plate 2 adopts the light aluminum alloy material.
Below in conjunction with a description of drawings use of the present utility model:
As shown in Figure 1, 2, 3, before beginning to test, at first testing table bearing 3 of the present utility model is installed on the tester testing table of asphalt mechanical index test macro LMT-3, again test specimen fixed head 16 is installed on the testing table bearing 3.Install test specimen shear plate 2 by draw-in groove 17 this moment, adjust the position of test specimen shear plate 2 in draw-in groove 17, make on test specimen placed hole 6 and the test specimen fixed head 16 on the test specimen shear plate 2 test specimen placed hole 6 both be adjusted into one heart, by trip bolt 11 test specimen shear plate 2 is fixed in the draw-in groove 17 again.The sensor that installation test is used, sensor are the digital display dial gauge of model SXB151A, by sensor mounting hole 14 sensor are placed on the sensor support base 5, screw sensor gib screw 4, and sensor is fixed on the sensor support base 5.
Begin test, select the test test specimen, test specimen is selected the road surface core of diameter 100mm or 150mm, also can select the laboratory shaping test piece.The test specimen that chooses is placed in test specimen lays in the tube 18, unclamp trip bolt 11 this moment, allows test specimen shear plate 2 freely glide in draw-in groove 17, until closely contacting with test specimen.At this moment, tester can be to dog screw 1 imposed load on test specimen shear plate 2 tops, and by test specimen shear plate 2 load is applied on the test specimen, and 2 pairs of test specimens of test specimen shear plate this moment produce shear stress, till test specimen generation shear failure, and off-test.
Log, and when calculating test findings, to consider the deadweight of test specimen shear plate 2.
The utility model can also be installed in the testing equipment with servo-drive system and environmental cabinet and use.
Claims (2)
1. asphalt pavement structure shear test anchor clamps, it is characterized in that: comprise testing table bearing, test specimen fixed head and test specimen shear plate, be connected by screw bolt and nut between described testing table bearing and the test specimen fixed head, be provided with sensor support base in the bottom of testing table bearing; Described test specimen shear plate matches with the draw-in groove of testing table bearing by testing table bearing inboard; Lateral surface at the testing table bearing relative with draw-in groove is equipped with trip bolt, and described trip bolt matches with the test specimen shear plate; Top middle portion at described test specimen shear plate is provided with dog screw; Be equipped with the test specimen placed hole at described test specimen fixed head and test specimen shear plate, on the test specimen placed hole, lay tube to being outside equipped with test specimen; Described test specimen lay the tube the both sides outer wall on correspondence be provided with the boss body, be provided with the sensor mounting hole at the boss body, the sensor gib screw that matches with the sensor mounting hole is installed at the external sidepiece of boss.
2. asphalt pavement structure shear test anchor clamps according to claim 1 is characterized in that: described test specimen shear plate employing light aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320068112 CN203132915U (en) | 2013-02-05 | 2013-02-05 | Asphalt pavement structure shearing test clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320068112 CN203132915U (en) | 2013-02-05 | 2013-02-05 | Asphalt pavement structure shearing test clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203132915U true CN203132915U (en) | 2013-08-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320068112 Expired - Lifetime CN203132915U (en) | 2013-02-05 | 2013-02-05 | Asphalt pavement structure shearing test clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203132915U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149085A (en) * | 2013-02-05 | 2013-06-12 | 辽宁省交通科学研究院 | Asphalt pavement structure shear test fixture |
| CN103674735A (en) * | 2013-12-13 | 2014-03-26 | 北京豪特耐管道设备有限公司 | Test device for shear strength of composite pipe and test method |
| CN103698229A (en) * | 2013-12-04 | 2014-04-02 | 长安大学 | Testing device for anti-fatigue shear performance between bonding layers of asphalt pavement and testing method thereof |
| CN103728187A (en) * | 2013-12-13 | 2014-04-16 | 上海交通大学 | Flexible shear splitting die |
| CN106596292A (en) * | 2016-12-14 | 2017-04-26 | 哈尔滨工业大学 | Interlayer direct shearing testing device for pavement material |
-
2013
- 2013-02-05 CN CN 201320068112 patent/CN203132915U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149085A (en) * | 2013-02-05 | 2013-06-12 | 辽宁省交通科学研究院 | Asphalt pavement structure shear test fixture |
| CN103698229A (en) * | 2013-12-04 | 2014-04-02 | 长安大学 | Testing device for anti-fatigue shear performance between bonding layers of asphalt pavement and testing method thereof |
| CN103674735A (en) * | 2013-12-13 | 2014-03-26 | 北京豪特耐管道设备有限公司 | Test device for shear strength of composite pipe and test method |
| CN103728187A (en) * | 2013-12-13 | 2014-04-16 | 上海交通大学 | Flexible shear splitting die |
| CN103674735B (en) * | 2013-12-13 | 2016-01-06 | 北京豪特耐管道设备有限公司 | Device for shear strength of composite pipe and method of testing |
| CN103728187B (en) * | 2013-12-13 | 2016-11-02 | 上海交通大学 | Flexible shear peel of mould |
| CN106596292A (en) * | 2016-12-14 | 2017-04-26 | 哈尔滨工业大学 | Interlayer direct shearing testing device for pavement material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 110015 Wen Chi Road, Shenhe District, Shenyang, Liaoning Province, No. 81 Patentee after: LIAONING ACADEMY OF TRANSPORTATION SCIENCE Co.,Ltd. Address before: 110015 Wen Chi Road, Shenhe District, Shenyang, Liaoning Province, No. 81 Patentee before: The Communication Research Institute of Liaoning Province |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |