CN2263132Y - Testing instrument for plate-bearing on road engineering spot - Google Patents
Testing instrument for plate-bearing on road engineering spot Download PDFInfo
- Publication number
- CN2263132Y CN2263132Y CN 96236222 CN96236222U CN2263132Y CN 2263132 Y CN2263132 Y CN 2263132Y CN 96236222 CN96236222 CN 96236222 CN 96236222 U CN96236222 U CN 96236222U CN 2263132 Y CN2263132 Y CN 2263132Y
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- plate
- hydraulic jack
- projection
- groove
- load sensor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a testing instrument for plate-bearing on road engineering spot, which comprises a hydraulic jack which is communicated with a pressure pump through a conduit pipe, the lower end of the hydraulic jack is provided with at least one load transfer plate, and the upper end of the hydraulic jack is provided with a load sensor; a bearing plate of a displacement sensor is arranged below the load transfer plate; a cross beam with an additional neck is arranged on the load sensor. The utility model also comprises a deflection testing frame and a microprocessor which is connected with the load sensor and the displacement sensor through a cable. The utility model can be used for testing modulus of resilience of soil matrix or road surface structure layer material to provide necessary evaluation basis for construction quality control and final acceptance and to provide necessary design parameter for subgrade and pavement design.
Description
The utility model belongs to the equipment or the servicing unit technical field of the setting-out or the checking the configuration in new paving.
The present loaded plate on-site testing device that is adopted according to the modulus of resilience test method of loaded plate mensuration soil matrix or road structure layer material, its jack and hand pump are connected as a single entity, deformation measurement adopts traditional lever benkelman beams deflectometer, putting more energy into does not have fixed mechanism on the crossbeam, the crossbeam of will putting more energy into during test is fixed on the automotive frame with iron wire, all finished parts of this device all are placed under the automobile, whole process from loading to the dynamometry reading, the tester must squat under automobile, reach several hours, test, operate very inconveniently, labour intensity is big.The jack of this testing arrangement is placed a loaded plate down, the center of gravity of jack and loaded plate is difficult to aim at the center of loaded plate, when automobile jack-up is tested the modulus of resilience of soil matrix or road structure layer material, the gravity of automobile is difficult to drop on the center of loaded plate, eccentric compression appears, the data of being tested are inaccurate, and are also dangerous, and testing arrangement is easily damaged.In addition, this testing arrangement uses pointer pressure, seriously exists certainty of measurement low, and shortcomings such as test weak effect have increased many workloads for the data processing and the calculating of test result.
The purpose of this utility model is to overcome the shortcoming of said apparatus, provide a kind of easy and simple to handle, install and fix conveniently, test data is accurate, safe and reliable, and can carry out data and handle, print result of calculation automatically and draw out the highway construction scene loaded plate tester of the suffered power of unit area and corresponding rebound deformation relation curve.
For achieving the above object, the solution that the utility model adopts is: it comprises hydraulic jack, at least place loading transmission plate, a upper ends in the hydraulic jack lower end load sensor is arranged, transfer the loaded plate that installs displacement transducer in the loading transmission plate, a plane of loading transmission plate is provided with projection, another plane is provided with groove, the upper surface of loaded plate is provided with projection or groove, and the bottom face of hydraulic jack is provided with groove or projection.It comprises that compression pump links by conduit and hydraulic jack, for hydraulic jack provides pressure.It comprises the crossbeam of putting more energy into that is placed on the load sensor, when test, is used to bear the gravity of automobile.It comprises the deformation measurement frame, and the two ends of the deflection measuring staff of this deformation measurement frame are connected with coupling head, are hinged with support in coupling head, is provided with the connecting rod that links with displacement transducer on the deflection measuring staff.It also comprises microprocessor, is connected with displacement transducer with load sensor by cable, the signal of load sensor and displacement transducer output is carried out data handle, and print result of calculation.
Projection or groove on the utility model hydraulic jack top bottom are arranged on the center, and the projection or the groove of loaded plate upper surface are arranged on the center, and the projection on plane of loading transmission plate, the groove on another plane are arranged on the center.The crossbeam of putting more energy into of the present utility model comprises crossbeam and moving press plate, and moving press plate is located on the crossbeam.
The utility model is compared with the loaded plate on-site testing device, have rational in infrastructure, easy and simple to handle, data are accurate, safe and reliable, advantages such as simple, easy to carry are installed, can print result of calculation automatically and draw out curve, can be used for testing the modulus of resilience of soil matrix or road structure layer material.
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the utility model data acquisition processing system operating principle block diagram.
Below in conjunction with drawings and Examples the utility model is further described.
In Fig. 1, the on-the-spot loaded plate tester of the highway construction of present embodiment is connected by hydraulic jack 4, hand pump 10, loading transmission plate 8, loaded plate 9, deformation measurement frame 6, load sensor 2, two displacement transducers 7, the crossbeam 1 of putting more energy into, Z80 single-chip microcomputers 5 and constitutes.Hand pump 10 is an embodiment of compression pump, and Z80 single-chip microcomputer 5 is an embodiment of microprocessor.Centre bit at hydraulic jack 4 bottom faces is equipped with a groove, a loading transmission plate 8 is placed in bottom in hydraulic jack 4, the centre bit that is equipped with a projection, soffit at the centre bit of loading transmission plate 8 upper surfaces is equipped with a groove, be placed with loaded plate 98 times in the loading transmission plate, the centre bit of loaded plate 9 upper surfaces is equipped with a projection, and the loading transmission plate 8 of present embodiment and loaded plate 9 are circular.Between hydraulic jack 4 and loaded plate 9, place several loading transmission plate 8, determine according to the floor space of loaded plate 9.During test set-up, loaded plate 9 is placed on the tested road surface structare layer, loading transmission plate 8 is placed on the loaded plate 9, and the projection of loaded plate 9 upper surfaces is inserted in the groove of loading transmission plate 8 soffits, again hydraulic jack 4 is placed on the loading transmission plate 8, the projection of loading transmission plate 8 upper surfaces is inserted in the groove of hydraulic jack 4 bottom faces.Adopt hydraulic jack 4, loading transmission plate 8 and the loaded plate 9 of this structure, after the assembling, the center line of hydraulic jack 4 just in time with the center line of loading transmission plate 8, with the center line of loaded plate 9 point-blank.A displacement transducer 7 is respectively installed in two surveys about loaded plate 8 same diameter centers, is used to be received under the situation of loading or off-load the displacement signal that soil matrix or road structure layer material take place.Hand pump 10 links by the bottom of conduit and hydraulic jack 4, for hydraulic jack 4 provides pressure.The utility model adopts compression pump to separate assembling with hydraulic jack 4, when having solved test, and the problem of tester's crouching operating difficulties under automobile.Be placed with load sensor 2 on the top of hydraulic jack 4, load sensor 2 is used to receive the signal that adds load or unload load.The crossbeam 1 of putting more energy into be placed on load sensor 2 above.The crossbeam 1 of putting more energy into of the present utility model is made of crossbeam 1-1 and moving press plate 1-2 connection, moving press plate 1-2 is fixedly mounted on the left and right sides above the crossbeam 1-1, moving press plate 1-2 can be fixed on the crossbeam 1 of putting more energy on the automotive frame 3, and the crossbeam 1 of putting more energy into is used to bear the gravity of automobile.When the operator handles hand pump 10 with automobile during by jack-up, the gravity of automobile just in time acts on the center of loading transmission plate 8 and loaded plate 9, is the steady stability balance, eccentric compression can not occur, and the data of being tested are accurate.
Deformation measurement frame 6 of the present utility model is made of deflection measuring staff 6-2, coupling head 6-3, support 6-4, connecting rod 6-1 connection.The deflection measuring staff 6-2 of present embodiment measures bar 6-21 by three joints and constitutes with thread connection, be easy to carry, there is coupling head 6-3 at the two ends of deflection measuring staff 6-2 with thread connection, on coupling head 6-3, be hinged with support 6-4, during test support 6-4 is placed on the ground, support 6-4 can be packed up after testing, two connecting rod 6-1 also are installed on deflection measuring staff 6-2, the end of two connecting rod 6-1 connects with deflection measuring staff 6-2 is movable, can be on deflection measuring staff 6-2 move left and right, the other end of two connecting rod 6-1 connects with displacement transducer 7.Deformation measurement frame 6 provides the relative displacement datum for displacement transducer 7.
Microprocessor is connected by cable and load sensor 2, two displacement transducers 7, the microprocessor of present embodiment is selected Z80 single-chip microcomputer 5 for use, Z80 single-chip microcomputer 5 carries out the data processing with the signal of load sensor 2 and displacement transducer 7 outputs, result of calculation is shown, prints, and draw out the relation curve of suffered power of unit area and corresponding rebound deformation.
In Fig. 2, load sensor 2 and displacement transducer 7 convert loading and the displacement signal of gathering to the signal of telecommunication, through amplification, filtering, enter A/D converter and convert data signal to, be input to Z80 single-chip microcomputer 5, show then, print test result, and draw out the relation curve of the suffered power of unit area and corresponding rebound deformation, be calculated as follows and print the modulus of resilience of soil matrix or road structure layer material.
In the formula: D is the diameter of loaded plate;
μ is the poisson's ratio of soil matrix or ground surface material deck;
∑ P
iBe unit pressure sums at different levels (Mpa) under the loaded plate;
∑ L
iBe the corresponding rebound deformation sum (0.01mm) under the loads at different levels;
E is the modulus of resilience (Mpa) of soil matrix or road structure layer material.
Adopt the modulus of resilience of the utility model test soil matrix or ground surface material structural material, measure soil matrix modulus of resilience test method (T0943-95) according to the loaded plate among " highway subgrade road surface on-the-spot test rules " JTJ059-95 of Ministry of Communications's promulgation and test.
Claims (2)
1, the on-the-spot loaded plate tester of a kind of highway construction is characterized in that it comprises:
Hydraulic jack [4], at least place a loading transmission plate [8] in hydraulic jack [4] lower end, upper ends has load sensor [2], transfer the loaded plate [9] that installs displacement transducer [7] in loading transmission plate [8], a plane of loading transmission plate [8] is provided with projection, another plane is provided with groove, the upper surface of loaded plate [9] is provided with projection or groove, and the bottom face of hydraulic jack [4] is provided with groove or projection;
Compression pump links by conduit and hydraulic jack [4];
Be placed on the crossbeam of putting more energy into [1] on the load sensor [2]:
Deformation measurement frame [6], the two ends of the deflection measuring staff [6-2] of this deformation measurement frame [6] are connected with coupling head [6-3], are hinged with support [6-4] in coupling head [6-3], are provided with the connecting rod [6-1] that links with displacement transducer [7] on deflection measuring staff [6-2];
It also comprises microprocessor, is connected with displacement transducer [7] with load sensor [2] by cable.
2, according to the on-the-spot loaded plate tester of the described highway construction of claim 1, it is characterized in that: projection or groove on hydraulic jack [4] bottom are arranged on the center, the projection or the groove of loaded plate [9] upper surface are arranged on the center, and the projection on [8] planes of loading transmission plate, the groove on another plane are arranged on the center; The said crossbeam of putting more energy into [1] is: be provided with moving press plate [1-2] on crossbeam [1-1].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96236222 CN2263132Y (en) | 1996-08-16 | 1996-08-16 | Testing instrument for plate-bearing on road engineering spot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96236222 CN2263132Y (en) | 1996-08-16 | 1996-08-16 | Testing instrument for plate-bearing on road engineering spot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2263132Y true CN2263132Y (en) | 1997-09-24 |
Family
ID=33912094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96236222 Expired - Fee Related CN2263132Y (en) | 1996-08-16 | 1996-08-16 | Testing instrument for plate-bearing on road engineering spot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2263132Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122597B (en) * | 2007-09-07 | 2010-12-15 | 重庆交通大学 | Road basal pelletized material mixture resilient modulus indoor test method and device |
| CN101576460B (en) * | 2009-05-22 | 2012-01-18 | 重庆交通大学 | Method for determining LC nonlinear bearing capacity of aggregate base |
| CN111254787A (en) * | 2020-02-13 | 2020-06-09 | 长沙理工大学 | Roadbed pavement dynamic and static deflection and resilience modulus combined testing device and testing method |
| CN111965060A (en) * | 2020-08-03 | 2020-11-20 | 河海大学 | Press-in type on-site modulus of resilience measuring device |
-
1996
- 1996-08-16 CN CN 96236222 patent/CN2263132Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122597B (en) * | 2007-09-07 | 2010-12-15 | 重庆交通大学 | Road basal pelletized material mixture resilient modulus indoor test method and device |
| CN101576460B (en) * | 2009-05-22 | 2012-01-18 | 重庆交通大学 | Method for determining LC nonlinear bearing capacity of aggregate base |
| CN111254787A (en) * | 2020-02-13 | 2020-06-09 | 长沙理工大学 | Roadbed pavement dynamic and static deflection and resilience modulus combined testing device and testing method |
| CN111254787B (en) * | 2020-02-13 | 2021-09-14 | 长沙理工大学 | Roadbed pavement dynamic and static deflection and resilience modulus combined testing device and testing method |
| CN111965060A (en) * | 2020-08-03 | 2020-11-20 | 河海大学 | Press-in type on-site modulus of resilience measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |