CN201298017Y - Road and bridge structure interlaminar shear apparatus - Google Patents
Road and bridge structure interlaminar shear apparatus Download PDFInfo
- Publication number
- CN201298017Y CN201298017Y CNU200820122739XU CN200820122739U CN201298017Y CN 201298017 Y CN201298017 Y CN 201298017Y CN U200820122739X U CNU200820122739X U CN U200820122739XU CN 200820122739 U CN200820122739 U CN 200820122739U CN 201298017 Y CN201298017 Y CN 201298017Y
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- hydraulic jack
- inner core
- urceolus
- hydraulic
- pressure
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a road and bridge structure interlaminar shear apparatus, comprising a cylinder-shaped outer barrel, a cylinder-shaped inner barrel, a hydraulic jack, a hydraulic pump containing a pressure sensor, a displacement sensor and a data storage device, wherein an opening is arranged on the lower end of the cylinder-shaped outer barrel; two openings are arranged on the lower end and the upper end of the cylinder-shaped inner barrel which is arranged inside the outer barrel; the hydraulic jack comprises a base and an expansion link, wherein the base is connected with the outer wall of the inner barrel by screws, and the expansion link is connected with the inner wall of the outer barrel by screws; the hydraulic pump containing the pressure sensor is used for driving the hydraulic jack and measuring the pressure provided for the hydraulic jack and is connected with the hydraulic jack by a hydraulic circuit; the displacement sensor comprises a shell body and a pointer and is used for measuring the displacement of the inner barrel, and the shell body is fixed above the barrel wall of the inner barrel, and the pointer is contacted with the inner wall of the outer barrel, and the displacement sensor is arranged in parallel with the motion direction of the expansion link of the hydraulic jack; and the data storage device is used for transforming the received pressure value and displacement value into digital signals for storing. The shear apparatus can directly operate on the field road and bridge structure interlaminars, thus being favorable for field use in road construction.
Description
Technical field
The utility model relates between asphalt pavement structural layer or bridge, road surface waterproof interlaminar bonding strength detection equipment, boxshear apparatus between particularly a kind of road and bridge structural sheets.
Background technology
Often be subjected to the reason of aspects such as weather, temperature, driving, material and pavement structure design owing to bituminous pavement or bridge floor asphalt mixture surfacing, structural interface early damages such as rut, road surface structare layer passing, waterproof layer structure slip can appear in bituminous pavement or bridge floor inevitably, these diseases have been brought road speed, passenger comfort, service life of road surface and traffic safety etc. and have been seriously influenced, cause being open to the traffic and just have to soon diseases such as rut, passing, interformational sliding are handled, caused bad social influence.
For the ease of the bonding situation of analyzing bituminous pavement or bridge floor asphalt mixture surfacing interlayer, structural interface early damage layers such as rut, road surface structare layer passings, waterproof layer structure slip are effectively handled, need the shearing strength between measurement road and bridge structural sheet.
The method of test shearing strength all is to utilize in the laboratory test facilities of non-special use to realize in the prior art, concrete grammar comprises: the end with the hydraulic test sample is fixed on the testing table earlier, then the loose end of this sample is applied a may command and measurable pressure at right angle and disconnect, calculate shearing strength according to pressure value that measures in the shear history and displacement size until this sample is sheared.In said method, test the shearing strength of road and bridge structural plane interlayer if desired, then must choose road and bridge structure surface layer sample in advance to the scene, take back the laboratory then and test; Up at present, also do not have to be directly used in the on-the-spot instrument that detects road and bridge structural plane inter-layer shearing strength and occur.
The utility model content
In view of this, the purpose of this utility model is to provide boxshear apparatus between a kind of road and bridge structural sheet, its can be directly between asphalt pavement structural layer or bridge, road surface waterproof interlayer carry out the checkout equipment of shearing strength, carry out on-the-spot test, help the working-yard and use.
For achieving the above object, the technical solution of the utility model specifically is achieved in that
Boxshear apparatus between a kind of road and bridge structural sheets comprises:
The tubular urceolus 1 of lower ending opening; The tubular inner core 2 of both ends open is positioned at urceolus 1 inside;
Hydraulic jack 9 comprises base and expansion link, is placed horizontally between urceolus 1 and the inner core 2, and base through screws is connected with the outer wall of inner core 2, and expansion link is connected by the inwall of screw with urceolus 1;
Hydraulic pump 4, at least comprise pressure transducer and overload protection arrangement, be used to drive hydraulic jack 9, be connected with hydraulic jack 9 by oil circuit, pressure transducer is used to measure the pressure value that offers hydraulic jack 9, and pressure when overload stop solution press pump 4 that overload protection arrangement is used for offering when hydraulic pump 4 hydraulic jack 9 provides pressure for hydraulic jack 9;
Displacement transducer 6, comprise housing and pointer, be used to measure inner core 2 with respect to the displacement size of urceolus 1 on the expansion link direction of motion of hydraulic jack 9, housing is fixed in the barrel top of inner core 2, pointer contacts with the inwall of urceolus 1, and placement direction is parallel with the expansion link direction of motion of hydraulic jack 9;
Data storage device 8, be used for receiving respectively the pressure value that the pressure transducer of the displacement size of displacement transducer 6 outputs and hydraulic pump 4 is exported, and convert displacement size and pressure value to the digital signal preservation respectively, link to each other with pressure transducer in the hydraulic pump 4 with displacement transducer 6 respectively by data line.
Described boxshear apparatus also comprises: plate stage clip 3, being used for promoting after shearing is finished inner core 2 resets hydraulic jack 9, a side relative between urceolus 1 and inner core 2 with hydraulic jack, and be connected by screw on the outer wall of inner core 2, reed props up the inwall of urceolus 1.
Described boxshear apparatus also comprises: computing machine 7, be used to receive the digital signal that data storage device 8 sends, analyze this digital signal and obtain shear displacemant variation diagram, pressure displacement in time variation diagram and shear displacemant and tonogram in time, maximum pressure value, and calculate road and bridge structural plane inter-layer shearing strength value, be connected with data storage device 8 by conventional data bus (USB) interface.
Described boxshear apparatus also comprises: end tube 10, and the tubular of upper end open, diameter is identical with the internal diameter of inner core 2, and outer wall contacts with the inwall of inner core 2, and the lower ending opening of bottom surface and urceolus 1 is on the same surface level, and the barrel height is less than the barrel height of inner core 2.
Described data storage device 8 is the single-chip microcomputer that has the instrument box of storer and data collecting card or have analog/digital (A/D) translation function.
Described hydraulic pump 4 is electric hydraulic pump, hydraulic hand-pump or foot-operated hydraulic pump.
The xsect of described tubular is circular, the above polygon of square or at least three limits.
Compared with prior art, the utility model bridge construction surface layer that can directly satisfy the need carries out execute-in-place, helps that road construction is on-the-spot to be used; In addition, the utility model adopts displacement transducer to come the Displacement Measurement size, the measuring accuracy height; The mode that adopts hydraulic jack to drive, volume is little, be convenient for carrying.
Description of drawings
Fig. 1 is the structural principle synoptic diagram of the utility model boxshear apparatus first embodiment;
Fig. 2 is the structural representation of end tube among the utility model boxshear apparatus second embodiment.
Embodiment
For make the purpose of this utility model, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
Fig. 1 is the structural principle synoptic diagram of the utility model boxshear apparatus first embodiment, and referring to Fig. 1, described boxshear apparatus comprises:
Urceolus 1, the tubular of lower ending opening;
Inner core 2, the tubular of both ends open, the height of inner core 2 is lower than urceolus 1, and the diameter of inner core 2 is positioned at urceolus 1 inside less than the diameter of urceolus 1, and the outer wall of inner core 2 links to each other with the inwall of urceolus 1 by hydraulic jack 9;
The xsect of above-mentioned tubular can be polygons circular, square or more than at least three limits;
Lifting jack 9 is installed for convenience, and inner core 2 and urceolus 1 can arranged off-centre;
Hydraulic jack 9, be placed horizontally between urceolus 1 and the inner core 2, hydraulic jack 9 comprises base and expansion link, and base through screws is connected with the outer wall of inner core 2, expansion link is connected by the inwall of screw with urceolus 1, and the axis of the direction of motion of expansion link and inner core 2 is perpendicular;
The screw number can be selected as required;
Hydraulic pump 4, at least comprise pressure transducer and overload protection arrangement, be used to drive hydraulic jack 9, be connected with hydraulic jack 9 by oil circuit, pressure transducer is used to measure the pressure value that offers hydraulic jack 9, and pressure when overload stop solution press pump 4 that overload protection arrangement is used for offering when hydraulic pump 4 hydraulic jack 9 provides pressure for hydraulic jack 9;
The hydraulic pump 4 here can be electric hydraulic pump, hydraulic hand-pump or foot-operated hydraulic pump; If hydraulic pump 4 itself does not comprise pressure transducer, can a pressure transducer be installed in addition for hydraulic pump 4, about how the conventional techniques means that a pressure transducer belongs to those skilled in the art to be installed, repeat no more here for hydraulic pump 4;
Displacement transducer 6, be used to measure inner core 2 with respect to the displacement size of urceolus 1 on the expansion link direction of motion of hydraulic jack 9, comprise housing and pointer, housing is fixed in the barrel top of inner core 2, such as utilizing mounting bracket 5, pointer contacts with the inwall of urceolus 1, and its placement direction is parallel with the expansion link direction of motion of hydraulic jack 9;
Have spring structure in the housing of displacement transducer 6, make the inwall of pointer and urceolus 1 break away from no instance, can guarantee accurately to measure the displacement size of inner core 2 like this.
Data storage device 8, be used for receiving respectively the pressure value that the pressure transducer of the displacement size of displacement transducer 6 outputs and hydraulic pump 4 is exported, and convert displacement size and pressure value to the digital signal preservation respectively, data storage device links to each other with pressure transducer in the hydraulic pump 4 with displacement transducer 6 respectively by data line, and have RS232 and USB (universal serial bus) (USB) etc. multiple can with the interface of compunication.
The data storage device 8 here can be instrument box with storer and data collecting card or the single-chip microcomputer that has analog/digital (A/D) translation function.How to gather and store the conventional techniques means that data belong to those skilled in the art about above-mentioned instrument box and single-chip microcomputer, repeat no more here.
Show that in order to carry out data analysis and chart at the scene the utility model boxshear apparatus also comprises:
Computing machine 7, be used to receive the digital signal that data storage device 8 sends, analyze this digital signal and on display screen, show shear displacemant variation diagram, pressure displacement in time variation diagram and shear displacemant and tonogram in time, maximum pressure value, and calculate road and bridge structural plane inter-layer shearing strength value, computing machine 7 can by such as, USB interface is connected with data storage device 8.How to handle the conventional techniques means that the digital signal that receives is those skilled in the art about computing machine, repeat no more here.
After end of test (EOT), hydraulic jack 9 can automatically reset, the utility model boxshear apparatus also comprises: plate stage clip 3, being used for promoting after shearing is finished inner core 2 resets hydraulic jack 9, a side relative between urceolus 1 and inner core 2 with hydraulic jack 9, and be connected by screw on the outer wall of inner core 2, (being under the idle state of boxshear apparatus) reed props up the inwall of urceolus 1 under the normal condition.
Fig. 2 is the structural representation of end tube among the utility model boxshear apparatus second embodiment, referring to Fig. 2, in order under the road and bridge scene lacks the situation of the machine of coring, to carry out the test of road and bridge structural plane inter-layer shearing strength, the utility model also comprises: end tube 10, the tubular of upper end open, diameter is identical with the internal diameter of inner core 2, outer wall contacts with the inwall of inner core 2, cooperate such as utilizing excessively, bottom surface and urceolus 1 lower ending opening are on the same surface level, the barrel height can be null value less than the barrel height of inner core 2;
For for simplicity, road and bridge the scene lack under the situation of the machine of coring, the inner core 2 of both ends open directly can be replaced to the inner core 2 of upper end open, bottom surface and urceolus 1 lower ending opening are on the same surface level, can finish the test of the shearing strength between the bridge construction surface layer of satisfying the need among second embodiment equally.
The xsect of above-mentioned tubular can be polygons circular, square or more than at least three limits.
The principle of work of the utility model boxshear apparatus first embodiment is as follows:
For example, when urceolus 1 is the cylindrical shape of 200 millimeters of external diameters, when inner core 2 is the cylindrical shape of 100 millimeters of internal diameters, at first, on detected road and bridge surface, get out two circles of 100 millimeters of 200 millimeters of external diameters and internal diameters with the machine of coring, dig out the annulus between two circles, 100 millimeters parts of internal diameter are sample, and the height of sample arrives the distance of road and bridge structure substrate surface greater than the expansion link of hydraulic jack 9; Boxshear apparatus is placed on the sample, makes the inwall of inner core 2 wrap 100 millimeters sample, the inwall in 200 millimeters holes of outer wall contact external diameter of urceolus 1, the lower ending opening contact road and bridge structure substrate surface of urceolus 1.Then, start electric hydraulic pump 4, drive the inner core 2 that hydraulic jack 9 promotes to be wrapped in sample and sample sheared along the expansion link direction of motion of hydraulic jack 9, the pressure transducer of simultaneous displacement sensor 6 and electric hydraulic pump 4 measure respectively inner core 2 with respect to urceolus 1 on the expansion link direction of motion of hydraulic jack 9 the displacement size and offer the pressure value of hydraulic jack 9 and export to the instrument box 8 that has storer and data collecting card and preserve; The thrust that hydraulic jack 9 produces constantly increases, until with the sample bottom and road and bridge structure basic unit stagger, when hydraulic jack 9 reaches self maximum range, such as 10 millimeters, the time stop motion; When the pressure that provides when electric hydraulic pump 4 reached the self-shield setting value, such as 2 MPas, then the overload protection arrangement in the electric hydraulic pump 4 stopped electric hydraulic pump 4 and pressure is provided for hydraulic pressure lifting jack 9; At this moment plate stage clip 3 promotes inner core 2, and lifting jack 9 is resetted.The digital signals that 7 pairs in computing machine receives from the instrument box 8 that has storer and data collecting card are analyzed and are shown shear displacemant variation diagram, pressure displacement in time variation diagram and shear displacemant and pressure variation, maximum pressure value in time in real time, and calculate road and bridge structural plane inter-layer shearing strength value.
The principle of work of the utility model boxshear apparatus second embodiment is as follows:
For example, when inner core 2 is the cylindrical shape of 100 millimeters of internal diameters, when end tube 10 is the cylindrical shape of 100 millimeters of diameters, at first, on detected road and bridge surface, choose the sample of 100 millimeters of diameters; Boxshear apparatus is placed on the sample, makes the bottom surface of end tube 10 and the upper surface of sample bond together, such as using epoxy resin, urceolus 1 is fixed on this road and bridge surface, such as, use manpower, solid mechanical or other modes.Then, start electric hydraulic pump 4, drive the inner core 2 that hydraulic jack 9 promotes to be wrapped in sample and sample sheared along the expansion link direction of motion of hydraulic jack 9, the pressure transducer of simultaneous displacement sensor 6 and electric hydraulic pump 4 measure respectively inner core 2 with respect to urceolus 1 on the expansion link direction of motion of hydraulic jack 9 the displacement size and offer the pressure value of hydraulic jack 9 and export to the instrument box 8 that has storer and data collecting card and preserve; The thrust that hydraulic jack 9 produces constantly increases, until with the sample bottom and road and bridge structure basic unit stagger, when hydraulic jack 9 reaches self maximum range, such as 10 millimeters, the time stop motion; When the pressure that provides when electric hydraulic pump 4 reached the self-shield setting value, such as 2 MPas, then the overload protection arrangement in the electric hydraulic pump 4 stopped electric hydraulic pump 4 and pressure is provided for hydraulic pressure lifting jack 9; At this moment plate stage clip 3 promotes inner core 2, and lifting jack 9 is resetted.The digital signals that 7 pairs in computing machine receives from the instrument box 8 that has storer and data collecting card are analyzed and are shown shear displacemant variation diagram, pressure displacement in time variation diagram and shear displacemant and pressure variation, maximum pressure value in time in real time, and calculate road and bridge structural plane inter-layer shearing strength value.
The above is preferred embodiment of the present utility model only, is not to be used to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. boxshear apparatus between a road and bridge structural sheet is characterized in that, comprising:
The tubular urceolus (1) of lower ending opening; The tubular inner core (2) of both ends open is positioned at urceolus (1) inside;
Hydraulic jack (9) comprises base and expansion link, is placed horizontally between urceolus (1) and the inner core (2), and base through screws is connected with the outer wall of inner core (2), and expansion link is connected by the inwall of screw with urceolus (1);
Hydraulic pump (4), at least comprise pressure transducer and overload protection arrangement, be used to drive hydraulic jack (9), be connected with hydraulic jack (9) by oil circuit, pressure transducer is used for measuring the pressure value offer hydraulic jack (9), and overload protection arrangement is used for that stop solution press pump (4) provides pressure for hydraulic jack (9) when pressure that hydraulic pump (4) offers hydraulic jack (9) transships;
Displacement transducer (6), comprise housing and pointer, be used to measure inner core (2) with respect to the displacement size of urceolus (1) on the expansion link direction of motion of hydraulic jack (9), housing is fixed in the barrel top of inner core (2), pointer contacts with the inwall of urceolus (1), and placement direction is parallel with the expansion link direction of motion of hydraulic jack (9);
Data storage device (8), be used for receiving respectively the pressure value that the pressure transducer of the displacement size of displacement transducer (6) output and hydraulic pump (4) is exported, and convert displacement size and pressure value to the digital signal preservation respectively, link to each other with pressure transducer in the hydraulic pump (4) with displacement transducer (6) respectively by data line.
2. boxshear apparatus according to claim 1, it is characterized in that, described boxshear apparatus also comprises: plate stage clip (3), being used for promoting after shearing is finished inner core (2) resets hydraulic jack (9), be positioned at a side relative between urceolus (1) and the inner core (2) with hydraulic jack, and be connected by screw on the outer wall of inner core (2), reed props up the inwall of urceolus (1).
3. boxshear apparatus according to claim 1, it is characterized in that, described boxshear apparatus also comprises: computing machine (7), be used to receive the digital signal that data storage device (8) sends, analyze this digital signal and obtain shear displacemant variation diagram, pressure displacement in time variation diagram and shear displacemant and tonogram in time, maximum pressure value, and calculate road and bridge structural plane inter-layer shearing strength value, be connected with data storage device (8) by conventional data bus USB interface.
4, boxshear apparatus according to claim 1, it is characterized in that, described boxshear apparatus also comprises: end tube (10), the tubular of upper end open, diameter is identical with the internal diameter of inner core (2), and outer wall contacts with the inwall of inner core (2), the lower ending opening of bottom surface and urceolus (1) is on the same surface level, and the barrel height is less than the barrel height of inner core (2).
5. according to any described boxshear apparatus in the claim 1 to 4, it is characterized in that described data storage device (8) is the single-chip microcomputer that has the instrument box of storer and data collecting card or have analog/digital A/D translation function.
6. according to any described boxshear apparatus in the claim 1 to 4, it is characterized in that described hydraulic pump (4) is electric hydraulic pump, hydraulic hand-pump or foot-operated hydraulic pump.
7. according to any described boxshear apparatus in the claim 1 to 4, it is characterized in that the xsect of described tubular is circular, the above polygon of square or at least three limits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820122739XU CN201298017Y (en) | 2008-09-25 | 2008-09-25 | Road and bridge structure interlaminar shear apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820122739XU CN201298017Y (en) | 2008-09-25 | 2008-09-25 | Road and bridge structure interlaminar shear apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201298017Y true CN201298017Y (en) | 2009-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820122739XU Expired - Fee Related CN201298017Y (en) | 2008-09-25 | 2008-09-25 | Road and bridge structure interlaminar shear apparatus |
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| CN (1) | CN201298017Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042933B (en) * | 2009-10-26 | 2013-02-27 | 中航惠腾风电设备股份有限公司 | Test apparatus of static bond strength between embedded part of wind wheel blade root and glass fiber reinforced plastic |
| CN110823803A (en) * | 2019-11-29 | 2020-02-21 | 南京绿色增材智造研究院有限公司 | Method for testing bonding strength between 3D printing concrete layers |
| CN113984546A (en) * | 2021-09-28 | 2022-01-28 | 北京建筑大学 | Testing machine and testing method for measuring road interlayer shear strength |
-
2008
- 2008-09-25 CN CNU200820122739XU patent/CN201298017Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042933B (en) * | 2009-10-26 | 2013-02-27 | 中航惠腾风电设备股份有限公司 | Test apparatus of static bond strength between embedded part of wind wheel blade root and glass fiber reinforced plastic |
| CN110823803A (en) * | 2019-11-29 | 2020-02-21 | 南京绿色增材智造研究院有限公司 | Method for testing bonding strength between 3D printing concrete layers |
| CN113984546A (en) * | 2021-09-28 | 2022-01-28 | 北京建筑大学 | Testing machine and testing method for measuring road interlayer shear strength |
| CN113984546B (en) * | 2021-09-28 | 2023-08-22 | 北京建筑大学 | Testing machine and testing method for measuring road interlayer shear strength |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20150925 |
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| EXPY | Termination of patent right or utility model |