CN202216879U - Cross plate shearing instrument - Google Patents
Cross plate shearing instrument Download PDFInfo
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- CN202216879U CN202216879U CN2011203115935U CN201120311593U CN202216879U CN 202216879 U CN202216879 U CN 202216879U CN 2011203115935 U CN2011203115935 U CN 2011203115935U CN 201120311593 U CN201120311593 U CN 201120311593U CN 202216879 U CN202216879 U CN 202216879U
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- cross plate
- spring balance
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- rod
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Abstract
The utility model discloses a cross plate shearing instrument which comprises a cross plate head, a main rod, an auxiliary rod and a spring balance, wherein the main rod is a T-shaped structure composed of a vertical rod and a horizontal rod; the cross plate head is arranged at the lower end part of the vertical rod; the auxiliary rod and the horizontal rod are arranged up and down; the auxiliary rod is movably hinged with the middle part of the horizontal rod; and the spring balance is connected between the auxiliary rod and the horizontal rod. In a test, after the cross plate head is penetrated into soft clay, the auxiliary rod is rotated; the main rod is driven by the spring balance to generate a torsion shear torque to the cross plate head; the soft clay is sheared and destroyed by the cross plate head; the torsion shear torque is measured by multiplying the value of the spring balance by the value of the torque; and the measured torsion shear torque is converted to obtain the undrained shear strength of the required soft clay. Therefore, the cross plate shearing instrument realizes the most simplified design of a measurement device and a torsion device, and meanwhile, the cross plate shearing instrument has the advantages of simple structure and simpleness and convenience in carrying and operation, time and labor are saved, and the like, and the cross plate shearing instrument provides a novel way for testing the undrained shear strength of the soft clay.
Description
Technical field
The utility model relates to a kind of earthwork test Instrument, specifically is meant a kind of four-bladed vane boxshear apparatus of on-the-spot test soft clay undrained shear strength.
Background technology
In soft clay geotechnique basic engineering; Like embankment, basis and foundation ditch etc., the soft clay undrained shear strength is one of important parameter, and the test of soft clay undrained shear strength is divided into shop experiment and two kinds of methods of site test; Shop experiment is to fetch earth from the scene to transport testing laboratory back; Utilize indoor instrument, like direct shear apparatus and its undrained shear strength of unconfined compressive strength appearance test, mainly there is the problem of fetch earth disturbance and specimen size effect in shop experiment; Site test adopts the test of four-bladed vane boxshear apparatus usually; It is to measure the most widely used method in natural not draining intensity of soft clay and stiff clay and the sensitivity experiment at present at the scene, and said existing four-bladed vane boxshear apparatus generally comprises cross wrench, torque force device and measuring equipment three parts, and elder generation is with in the cross wrench injection weak soil in the test; The operation torsion device rotates the cross wrench; Destroy until the soil body, required moment when recording rotation through measuring equipment, thus calculate the shearing strength of being unearthed.
Above-mentioned existing four-bladed vane boxshear apparatus; Its measuring equipment generally includes the structures such as rotating disk, pulley, application of force dish, rocking handle and readout instrument of mutual adaptive connection; Though it provides precision preferably for the measurement of boxshear apparatus; But it exists complex structure, the heavy defective of instrument, so it not only has the inconvenience of carrying, the high defective of cost, and needs multi agent cooperation in the practical operation and consumes certain manpower; To said problem, the inventor has done further investigation to existing four-bladed vane boxshear apparatus, has invented a kind of four-bladed vane boxshear apparatus easy to carry, simple to operate, and this case produces thus.
The utility model content
The purpose of the utility model is to provide a kind of simple in structure, easy to operate four-bladed vane boxshear apparatus, and it has overcome and carries inconvenience, complicated operation in the conventional art and defective such as take time and effort.
In order to reach above-mentioned purpose, the solution of the utility model is:
A kind of four-bladed vane boxshear apparatus; It includes the cross wrench, also includes mobile jib, auxilliary bar and spring balance, the T font structure of above-mentioned mobile jib for being made up of montant and cross bar; Above-mentioned cross wrench is installed in the bottom of above-mentioned montant; Above-mentioned auxilliary bar and above-mentioned cross bar are presented down setting, and this auxilliary bar is movably hinged at the middle part of cross bar therewith mutually, and above-mentioned spring balance is connected between above-mentioned auxilliary bar and above-mentioned cross bar.
Adopt disassembled mode to interconnect between above-mentioned cross wrench and above-mentioned montant.
One bolt head is formed on the top of above-mentioned cross wrench, and the bottom of corresponding above-mentioned montant is formed with and the mutually close-fitting bolt hole of above-mentioned bolt head.
Above-mentioned spring balance is provided with two altogether, is located at above-mentioned auxilliary bar and above-mentioned cross bar respectively and intersects relative place, both sides, back.
Be equipped with on above-mentioned auxilliary bar and the above-mentioned cross bar and be convenient to the draw ring that above-mentioned spring balance connects setting.
After adopting such scheme, a kind of four-bladed vane shear of the utility model appearance, its torque force device that adopts include mobile jib and the auxilliary bar that be movably hinged suitable with it that is the T font structure; Measuring equipment adopts simple spring balance structure, and this spring balance is connected between auxilliary bar and cross bar, during test dexterously; After treating cross wrench injection weak soil, the auxilliary bar of a sideway swivel that the edge is relative with spring balance, it drives mobile jib through spring balance the cross wrench is produced the torsional shear square; The cross wrench is sheared soft clay and is destroyed; The torsional shear square multiply by moment through spring balance to be measured, and torsional shear square process is converted the undrained shear strength of the soft clay that gets final product requiredly; Thus; The utility model is through the ingenious cooperation between spring balance, auxilliary bar and mobile jib; Realized the simplified design of measuring equipment and torque force device; Have simultaneously simple in structure, carry easy and simple to handle, save time and advantage such as laborsaving, for the test of soft clay undrained shear strength provides a kind of new approach.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Label declaration
Cross wrench 1 mobile jib 2
Montant 21 cross bars 22
Draw ring 5
Embodiment
In order further to explain the technical scheme of the utility model, come the utility model is set forth in detail through specific embodiment below.
Be illustrated in figure 1 as a kind of four-bladed vane boxshear apparatus of the utility model, it includes cross wrench 1, mobile jib 2, auxilliary bar 3 and spring balance 4.
Above-mentioned auxilliary bar 3 is presented down setting with cross bar 22; And auxilliary bar 3 adopts bearing pin to be movably hinged mutually with the middle part of cross bar 22; Then this can intersect rotation between the two freely, and in a side that intersects, auxilliary bar 3 and 22 of cross bars are connected with spring balance 4; For the ease of the connection effect of spring balance 4, on auxilliary bar 3 and cross bar 22, be equipped with the draw ring 5 that can supply spring balance 4 connections to hang; Spring balance can be provided with one or two according to actual conditions, when less or intensity is low when the test soft clay degree of depth, can adopt format diameter * highly be the cross wrench 1 of 50 * 100mm; And can only hang up a spring balance 4; On the contrary, when big or intensity is higher when the test soft clay degree of depth, can adopt format diameter * highly be the cross wrench 1 of 25 * 50mm; And can hang up two spring balances 4, these two spring balances 4 are located at auxilliary bar 3 and cross bar 22 respectively and are intersected afterwards relative both sides and locate.
During concrete operations; At first with a certain degree of depth place in the cross wrench 1 injection soft clay, operator's both hands are held with a firm grip and are assisted bar 3 two ends, and bar 3 is assisted with spring balance 4 relative sideway swivels in the edge; Drive mobile jib 2 (comprising cross bar 22 and montant 21) through spring balance 4 cross wrench 1 is produced the torsional shear square; Cross wrench 1 is sheared soft clay and is destroyed, and said torsional shear square is power and the product of spring balance 4 to cross bar 22 middle part distances on the spring balance 4, is scaled the undrained shear strength of soft clay then according to following formula:
In the formula, c
uUndrained shear strength (kPa) for soft clay; M
rBe the maximal resistance square (kNm) on the cross wrench 1; D is cross wrench 1 diameter (m); H is cross wrench 1 height (m).
In sum; The utility model four-bladed vane boxshear apparatus, its torque force device that adopts include mobile jib 2 and the auxilliary bar 3 that be movably hinged suitable with it that is the T font structure, and measuring equipment adopts simple spring balance 4 structures; This spring balance 4 is connected 22 of auxilliary bar 3 and cross bars dexterously; Make the turning effort that can make full use of auxilliary bar 3 in the operation and the ordinary surveying effect of spring balance 4, thus, this case is through the ingenious cooperation of 2 of spring balance 4, auxilliary bar 3 and mobile jibs; Realized the simplified design of measuring equipment and torque force device; Can realize different depth place in-situ test soft clay undrained shear strength, have simultaneously simple in structure, carry easy and simple to handle, save time and advantage such as laborsaving, for the test of soft clay undrained shear strength provides a kind of new approach.
Product form of the foregoing description and graphic and non-limiting the utility model and style, the those of ordinary skill of any affiliated technical field all should be regarded as not breaking away from the patent category of the utility model to its suitable variation or modification of doing.
Claims (5)
1. four-bladed vane boxshear apparatus; It includes the cross wrench, it is characterized in that: also include mobile jib, auxilliary bar and spring balance, the T font structure of above-mentioned mobile jib for being made up of montant and cross bar; Above-mentioned cross wrench is installed in the bottom of above-mentioned montant; Above-mentioned auxilliary bar and above-mentioned cross bar are presented down setting, and this auxilliary bar is movably hinged at the middle part of cross bar therewith mutually, and above-mentioned spring balance is connected between above-mentioned auxilliary bar and above-mentioned cross bar.
2. a kind of four-bladed vane boxshear apparatus as claimed in claim 1 is characterized in that: adopt disassembled mode to interconnect between above-mentioned cross wrench and above-mentioned montant.
3. a kind of four-bladed vane boxshear apparatus as claimed in claim 1, it is characterized in that: a bolt head is formed on the top of above-mentioned cross wrench, and the bottom of corresponding above-mentioned montant is formed with and the mutually close-fitting bolt hole of above-mentioned bolt head.
4. a kind of four-bladed vane boxshear apparatus as claimed in claim 1 is characterized in that: above-mentioned spring balance is provided with two altogether, is located at above-mentioned auxilliary bar and above-mentioned cross bar respectively and intersects relative place, both sides, back.
5. a kind of four-bladed vane boxshear apparatus as claimed in claim 1 is characterized in that: be equipped with on above-mentioned auxilliary bar and the above-mentioned cross bar and be convenient to the draw ring that above-mentioned spring balance connects setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203115935U CN202216879U (en) | 2011-08-25 | 2011-08-25 | Cross plate shearing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203115935U CN202216879U (en) | 2011-08-25 | 2011-08-25 | Cross plate shearing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202216879U true CN202216879U (en) | 2012-05-09 |
Family
ID=46016128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203115935U Expired - Fee Related CN202216879U (en) | 2011-08-25 | 2011-08-25 | Cross plate shearing instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN202216879U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245570A (en) * | 2013-04-24 | 2013-08-14 | 中国水电顾问集团华东勘测设计研究院 | Method for obtaining soil shear strength parameter through in-situ test of cross plate |
| CN103344507A (en) * | 2013-06-21 | 2013-10-09 | 中国水电顾问集团华东勘测设计研究院 | Device and method for testing in-situ strength of structural anisotropic soft clay |
| CN105842085A (en) * | 2016-05-09 | 2016-08-10 | 温州大学瓯江学院 | Improved in-situ vane shearing method detection method and detection device |
| CN107560884A (en) * | 2017-09-30 | 2018-01-09 | 中交第三航务工程勘察设计院有限公司 | For field vane shear test and the integrated apparatus and application method of sampling |
| CN107703279A (en) * | 2017-09-28 | 2018-02-16 | 宁波工程学院 | A kind of Portable in-situ direct shear apparatus |
-
2011
- 2011-08-25 CN CN2011203115935U patent/CN202216879U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245570A (en) * | 2013-04-24 | 2013-08-14 | 中国水电顾问集团华东勘测设计研究院 | Method for obtaining soil shear strength parameter through in-situ test of cross plate |
| CN103245570B (en) * | 2013-04-24 | 2015-11-18 | 中国水电顾问集团华东勘测设计研究院 | Four-bladed vane in-situ test obtains the method for soil shear strength parameter |
| CN103344507A (en) * | 2013-06-21 | 2013-10-09 | 中国水电顾问集团华东勘测设计研究院 | Device and method for testing in-situ strength of structural anisotropic soft clay |
| CN103344507B (en) * | 2013-06-21 | 2015-09-09 | 中国水电顾问集团华东勘测设计研究院 | In-situ strength of structural anisotropic soft clay proving installation and method |
| CN105842085A (en) * | 2016-05-09 | 2016-08-10 | 温州大学瓯江学院 | Improved in-situ vane shearing method detection method and detection device |
| CN107703279A (en) * | 2017-09-28 | 2018-02-16 | 宁波工程学院 | A kind of Portable in-situ direct shear apparatus |
| CN107560884A (en) * | 2017-09-30 | 2018-01-09 | 中交第三航务工程勘察设计院有限公司 | For field vane shear test and the integrated apparatus and application method of sampling |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20120825 |