CN206248657U - A kind of use CBR device for surveying geotechnological expansion rate - Google Patents
A kind of use CBR device for surveying geotechnological expansion rate Download PDFInfo
- Publication number
- CN206248657U CN206248657U CN201621364445.9U CN201621364445U CN206248657U CN 206248657 U CN206248657 U CN 206248657U CN 201621364445 U CN201621364445 U CN 201621364445U CN 206248657 U CN206248657 U CN 206248657U
- Authority
- CN
- China
- Prior art keywords
- cbr
- expansion rate
- concentric circles
- firm banking
- support
- Prior art date
- 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
Links
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model is related to a kind of use CBR device for surveying geotechnological expansion rate, CBR is provided with firm banking, described CBR top is provided with concentric circles support, circular steel column between the concentric circles support and firm banking by being arranged symmetrically is fixedly linked, the inner ring of the firm banking is matrix disk, described CBR is internally provided with pallet, the center of the pallet is installed with support bar, dial indicators rack is installed with the top of the concentric circles support, amesdial is installed on the dial indicators rack.The expansion rate of earth working material can not only accurately be determined, and can be in the case where a test specimen be made, California bearing ratio and expansion rate are measured simultaneously, the workload for reducing experiment compares other diameter expansion rate amount methods with error, suitable for all kinds of expansion rate tests with dilative soil, with stronger practicality.
Description
Technical field
The utility model is related to earthwork engineering test apparatus, especially measures expansion rate, it is adaptable to have expansile soil.
Background technology
Swelled ground is widely distributed in China, and in recent years, with the development of national economy, China's engineering construction is more and more,
Swelled ground problem is run into the process of construction of highway and channel increasingly to protrude, and can usually cause subgrade deformation and side slope
The engineering project disasters such as unstability, therefore, the expansive force for how accurately measuring swelled ground has very important significance.
In Practical Project, foundation soil, the California bearing ratio of subgrade soils and expansion rate are the important indicator of earth working material, mesh
Preceding device can respectively survey the expansion rate and California bearing ratio of earth working material, test not easy, and control is difficult in practical operation,
Accidental error is big.
Utility model content
The device of the survey expansion rate that the utility model is provided, can not only accurately determine the expansion rate of earth working material, and can
So that in the case where a test specimen is made, while measuring California bearing ratio and expansion rate, the workload for reducing experiment is compared with error
Other diameter expansion rate amount methods, it is adaptable to all kinds of expansion rate tests with dilative soil, with stronger practicality.
In order to solve the above-mentioned technical problem, the utility model proposes following technical scheme：One kind surveys geotechnique's expansion with CBR
The device of rate, it includes firm banking, CBR is provided with the firm banking, and described CBR top is provided with concentric circles
Support, the circular steel column between the concentric circles support and firm banking by being arranged symmetrically is fixedly linked, the circular steel column
Top be machined with screw rod, the top of the screw rod is provided with nut, and the concentric circles support is by nut locking at CBR
Top, the inner ring of the firm banking is matrix disk, and multiple permeable holes, the CBR are uniformly machined with the matrix disk
Cylinder is internally provided with pallet, and the center of the pallet is installed with support bar, is machined with the pallet multiple uniform saturating
Water hole, is installed with dial indicators rack at the top of the concentric circles support, amesdial is provided with the dial indicators rack.
The external diameter of the external diameter with CBR of the matrix disk is identical.
The amesdial is located at the surface of support bar, by support bar amesdial can be driven to move.
The position being engaged with screw rod on the concentric circles support is machined with fixed circular hole.
The utility model has the advantages that：
1st, structure is good, and install convenient, easy to operate, data acquisition are directly perceived.
2nd, operation, before CBR values are surveyed, test specimen is first soaked, and the present apparatus is directly surveyed during soaked with CBR
Its expansion rate.
3rd, high accuracy, displacement transducer has the advantages that high precision, range are big, improves the precision of result of the test.
4th, wide scope, is not only suitable for measuring the expansive force change under changing with environmental damp condition during soil sample is soaked,
It is also applied for the expansive force test under temperature control.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of firm banking of the present utility model.
Fig. 3 is CBR schematic diagram of the present utility model.
Fig. 4 is displacement transferring structure schematic diagram of the present utility model.
Fig. 5 is supporting structure schematic diagram of the present utility model.
Fig. 6 is nut structure schematic diagram of the present utility model.
In figure：Firm banking 1, matrix disk 2, permeable hole 3, circular steel column 4, screw rod 5, CBR tin 6, pallet 7, support bar
8th, concentric circles support 9, dial indicators rack 10, fixed circular hole 11, nut 12, amesdial 13.
Specific embodiment
Implementation method of the present utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1：
Such as Fig. 1-6, a kind of use CBR device for surveying geotechnological expansion rate, it includes firm banking 1, on the firm banking 1
CBR 6 is provided with, described CBR 6 of top is provided with concentric circles support 9, between the concentric circles support 9 and firm banking 1
It is fixedly linked by the circular steel column 4 being arranged symmetrically, the top of the circular steel column 4 is machined with screw rod 5, the top of the screw rod 5
End is provided with nut 12, and the concentric circles support 9 is locked in the top of CBR 6 by nut 12, the firm banking 1 it is interior
It is matrix disk 2 to enclose, and multiple permeable holes 3 are uniformly machined with the matrix disk 2, and described CBR 6 is internally provided with pallet 7,
The center of the pallet 7 is installed with support bar 8, and multiple uniform permeable holes 3 are machined with the pallet 7, described concentric
The top of circle support 9 is installed with dial indicators rack 10, and amesdial 13 is provided with the dial indicators rack 10.
Further, the external diameter of the external diameter with CBR 6 of the matrix disk 2 is identical.
Further, the amesdial 13 is located at the surface of support bar 8, and amesdial 13 can be driven by support bar 8
It is mobile.
Further, the position being engaged with screw rod 5 on the concentric circles support 9 is machined with fixed circular hole 11.
Embodiment 2：
First, the structure of expansion gear
1st, it is overall
As schemed, this expansion gear is provided with fixed system and measuring system；Fixed system is connected with measuring system.The present apparatus
It is applicable all kinds of with expansile earth working material.
2nd, functional part
1 fixed system
Described fixed system, including firm banking 1, circular steel column 4, concentric circles support 9；
Described firm banking 1 is a metal nahlock, and a diameter of 180mm, inner ring is a recessed matrix disk 2,
External diameter of the diameter of inner ring with CBR is consistent, is 154mm, plays the role of fixed CBR, and inner ring has many small permeable
Hole 3, diameter 0.5mm, when test specimen is soaked, water is penetrated into earth working material by circular hole, expands it.
Described circular steel column, directly through different, bottom diameter is connected for 8mm with firm banking, its top end diameter at two ends
5mm, and screw rod 5 is provided with, for fixing upper bracket.Upper bracket is made up of two parts, and bottom is external diameter 180mm, interior warp
It is the concentric circles support 9 of 152mm, while also have two corresponding with circular steel column fixed circular holes 11, a diameter of 5mm, top has
The dial indicators rack 10 of fixed amesdial.
Described displacement transmission lever includes bottom tray 7 and the support bar 8 along its center axis.The diameter and CBR of pallet
The diameter of cylinder is the same, is 152mm, and has many small permeable holes, and when test specimen and device are put into water together, water leads to
Cross permeable hole and penetrate into test specimen from top, cause the expansion of the soil body, the soil body is promoted is, move in displacement transmission lever, support bar and thousand
Table is divided to be in contact, amesdial record displacement.
2nd, application method
1st, each part of inspection apparatus stands intact, and ensures the cleannes of a whole set of instrument, firm banking is placed on smooth
's
On testing stand, during two with screw rod circular steel columns are assigned into firm banking vertically；The test specimen that will be hit after reality connects
Placed together along base spill disk with CBR, the screw rod of the mounting hole alignment steel column at circular base plate support two ends with holes hangs down
Directly put down, level is laid, screwing screw；Amesdial is fixed on support, and by the support bar of side head alignment displacement transmission lever,
Amesdial is returned to zero.Finally place a device into again in tank, dilation is recorded, so as to calculate expansion rate.
By above-mentioned description, those skilled in the art completely can be without departing from this utility model technological thought
In the range of, carry out various changes and amendments all within protection domain of the present utility model.It is of the present utility model not most
Matters, belong to the common knowledge of those skilled in the art.
Claims (4)
1. a kind of use CBR device for surveying geotechnological expansion rate, it is characterised in that：It includes firm banking（1）, the firm banking
（1）On be provided with CBR（6）, it is described CBR（6）Top be provided with concentric circles support（9）, the concentric circles support（9）With
Firm banking（1）Between by the circular steel column that is arranged symmetrically（4）It is fixedly linked, the circular steel column（4）Top be machined with
Screw rod（5）, the screw rod（5）Top nut is installed（12）, the concentric circles support（9）By nut（12）It is locked in
CBR（6）Top, the firm banking（1）Inner ring be matrix disk（2）, the matrix disk（2）On be uniformly machined with
Multiple permeable holes（3）, it is described CBR（6）It is internally provided with pallet（7）, the pallet（7）Center be installed with support bar
（8）, the pallet（7）On be machined with multiple uniform permeable holes（3）, the concentric circles support（9）Top be installed with
Dial indicators rack（10）, the dial indicators rack（10）On amesdial is installed（13）.
2. a kind of use CBR device for surveying geotechnological expansion rate according to claim 1, it is characterised in that：The matrix circle
Disk（2）External diameter and CBR（6）External diameter it is identical.
3. a kind of use CBR device for surveying geotechnological expansion rate according to claim 1, it is characterised in that：The amesdial
（13）Positioned at support bar（8）Surface, by support bar（8）Amesdial can be driven（13）It is mobile.
4. a kind of use CBR device for surveying geotechnological expansion rate according to claim 1, it is characterised in that：The concentric circles
Support（9）Upper and screw rod（5）The position being engaged is machined with fixed circular hole（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364445.9U CN206248657U (en) | 2016-12-13 | 2016-12-13 | A kind of use CBR device for surveying geotechnological expansion rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364445.9U CN206248657U (en) | 2016-12-13 | 2016-12-13 | A kind of use CBR device for surveying geotechnological expansion rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206248657U true CN206248657U (en) | 2017-06-13 |
Family
ID=59006688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621364445.9U Expired - Fee Related CN206248657U (en) | 2016-12-13 | 2016-12-13 | A kind of use CBR device for surveying geotechnological expansion rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206248657U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596344A (en) * | 2019-07-26 | 2019-12-20 | 河南水利与环境职业学院 | Test device for testing expansion coefficient of soil texture |
| CN113138111B (en) * | 2021-04-28 | 2023-07-21 | 山东省公路桥梁建设有限公司 | Indoor test method and device for water stability of roadbed filler |
-
2016
- 2016-12-13 CN CN201621364445.9U patent/CN206248657U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596344A (en) * | 2019-07-26 | 2019-12-20 | 河南水利与环境职业学院 | Test device for testing expansion coefficient of soil texture |
| CN113138111B (en) * | 2021-04-28 | 2023-07-21 | 山东省公路桥梁建设有限公司 | Indoor test method and device for water stability of roadbed filler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206248661U (en) | A kind of CBR device for surveying geotechnological expansion rate and lateral swelling force with repacking | |
| CN105571758B (en) | The dilatometer of constant volume method measurement expansive force | |
| CN102809641B (en) | Undisturbed soil sample expansion force testing device capable of controlling saturation | |
| CN106092756B (en) | A kind of hollow ring shear apparatus applying confining pressure | |
| CN110700225B (en) | Roadbed dynamic resilience modulus field test equipment and measuring method thereof | |
| CN103675231B (en) | Soil layer settlement tester and testing method thereof | |
| CN205209677U (en) | Dilatometer of bulging force is measured to permanent volumetric method | |
| CN204165978U (en) | A kind of asphalt penetration test precise testing device | |
| CN108593883A (en) | Strain type lateral expansion force testing device and measuring method | |
| CN206248657U (en) | A kind of use CBR device for surveying geotechnological expansion rate | |
| CN208254963U (en) | It is a kind of measurement immersion under the conditions of expand the soil volume change experimental rig | |
| CN211669200U (en) | Multifunctional CBR cylinder for testing expansive soil CBR and expansive force | |
| CN208187873U (en) | A kind of concrete and soil body interface shearing experimental rig | |
| CN103616495A (en) | Device for simulating soil nutrient transfer rule | |
| CN204649237U (en) | Swelled ground infiltration, expansion, loading, consolidation testing device | |
| CN212693568U (en) | Steel slag and asphalt mixture expansibility detection equipment | |
| CN109469124A (en) | The layer-stepping pile foundation test device and test method vertically loaded using double air pressure films | |
| CN201724733U (en) | Shear wave velocity detector for triaxial apparatus | |
| CN109374441B (en) | Multifunctional ring shear apparatus testing device based on TSZ full-automatic testing machine and use method thereof | |
| CN103323569B (en) | Variable-rate pore pressure static sounding test device | |
| CN207452957U (en) | For the Model Pile fixing device of indoor model test | |
| CN108489828A (en) | A kind of concrete and soil body interface shearing experimental rig and its test method | |
| CN206515333U (en) | A kind of soil sample dilatancy measurement apparatus | |
| CN115628987A (en) | Dynamic and static triaxial test device capable of eliminating influence of membrane sequential change effect | |
| CN204783065U (en) | Similar material analogue test support |
Legal Events
| 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: 20170613 Termination date: 20171213 |