CN201242518Y - External holder for direct shear apparatus - Google Patents
External holder for direct shear apparatus Download PDFInfo
- Publication number
- CN201242518Y CN201242518Y CNU2008200540156U CN200820054015U CN201242518Y CN 201242518 Y CN201242518 Y CN 201242518Y CN U2008200540156 U CNU2008200540156 U CN U2008200540156U CN 200820054015 U CN200820054015 U CN 200820054015U CN 201242518 Y CN201242518 Y CN 201242518Y
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- CN
- China
- Prior art keywords
- uprights
- outer frame
- direct shear
- utility
- outrigger
- 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
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims description 4
- 238000010008 shearing Methods 0.000 abstract description 7
- 230000006378 damage Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Images
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
本实用新型涉及一种支撑外架，具体是一种用于直接剪切仪的外架。包括四根立柱，每相邻两立柱顶部均连接有横梁，每个横梁与立柱之间连接有角钢，且所述角钢形成用于放置砝码的立体六面角钢笼；横向方向上的两立柱底部之间也连接有横梁。本实用新型采用焊接的外架以代替锚固于四周的立柱，并且利用砝码放置于外架角钢笼之中来提供反力，既保证了试验的正常进行，又提高了现场直接剪切试验数据的准确性。
The utility model relates to a supporting outer frame, in particular to an outer frame for a direct shearing instrument. It includes four uprights, the tops of every adjacent two uprights are connected with beams, and angle steels are connected between each beam and uprights, and the angles form a three-dimensional hexagonal steel cage for placing weights; two uprights in the transverse direction Cross beams are also connected between the bottoms. The utility model adopts a welded outer frame to replace the anchored columns around it, and uses weights placed in the angle steel cage of the outer frame to provide reaction force, which not only ensures the normal progress of the test, but also improves the field direct shear test data accuracy.
Description
Technical field
The utility model relates to a kind of support outrigger, specifically is a kind of outrigger that is used for direct shear apparatus.
Background technology
The Shear Strength Index of clayey soil is mainly measured by direct shear test.So-called direct shear experiment is a test specimen of shearing soil on a certain certain surface, directly measures the shear stress on this face and the experiment of shearing strength.At first by the different vertical pressure F of horizontal shear
vSample under the effect, the shear stress τ when trying to achieve sample destruction determines native shearing strength according to Coulomb law then.
Perpendicular stress σ on the known shear surface of direct shear experimental basis and the relation of shearing strength τ are asked intensive parameter c and φ, calculate and determine the usefulness of soil body material performance so that stable inspection to be provided.As the shearing strength correctness of one of most important calculating parameter in the civil engineering construction, designing quality and engineering key of success place often.
Be used for realizing that the equipment of shearing experiment is called direct shear apparatus, mainly comprise shear box, vertical loading equipment, shear gearing, dynamometer and displacement examining system.Its operating process is: at first dig rectangle hole in the place that needs shear test, and the former state of purchasing test specimen, embedding four root posts around test specimen, its major function is for vertical lifting jack provides counter-force, installs lateral-thrust unit again and shears gearing.
From site test as can be seen, applying of vertical force is main by the column around being anchored in, and when vertical force continues to increase, column anchoring position is easy to occur being out of shape even can pulling up column, serious harm normally carrying out of test, thereby influenced on-the-spot measurement to shear strength parameter.
The utility model content
At the defective that above-mentioned on-the-spot direct shear apparatus exists, the utility model purpose is intended to and can the column that apply counter-force be improved, and makes normally carrying out that it can warranty test, and can improve the accuracy of on-the-spot direct shear test data again.
For achieving the above object, the technical solution adopted in the utility model is, a kind of outrigger that is used for direct shear apparatus, comprise four root posts, every two adjacent upright top all is connected with crossbeam, between crossbeam and column, be connected with angle steel, and described angle steel is formed for placing the solid six face angle cages of counterweight.
Between being subjected to two columns bottom on the force direction, the non-level of sample also is connected with crossbeam.
The utility model advantage mainly shows in the following areas:
(1) outrigger has very high rigidity and resistance to overturning, can not produce excessive distortion in process of the test, helps to improve the accuracy of test figure;
(2) outrigger has replaced column, has improved stability and security that counter-force applies, has also brought very big convenience for the operation at scene;
(3) counterweight that is positioned at the angle steel cage can be estimated the size and the scope of counter-force, flexible operation more accurately.
In sum, the utility model adopts the outrigger of welding to replace being anchored in column all around, and utilize counterweight to provide counter-force among being positioned over outrigger angle steel cage, both guaranteed normally carrying out of test, improved the accuracy of on-the-spot direct shear test data again.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is a left view of the present utility model;
Fig. 3 is a vertical view of the present utility model;
Fig. 4 places synoptic diagram for counterweight;
Fig. 5 is an angle steel size synoptic diagram in the utility model.
1-column 2-crossbeam 3-test specimen lay down location and transverse force apply the place
4-angle steel 5-counterweight placement location
Embodiment
Present embodiment provides a kind of outrigger that is used for direct shear apparatus, shown in Fig. 1～3, comprises four root posts 1, and every two adjacent upright 1 top all is connected with crossbeam 2, is provided with angle steel 4 between crossbeam 2 and the column 1; Formed the position 5 (three-dimensional six face angle cages) that is used to place counterweight between each angle steel 4.
As shown in Figure 2, for ease of applying of transverse force, column 1 bottom also is connected with crossbeam 2 between the non-level of sample is subjected to two columns bottom on the force direction, promptly apply not angle cleat 4 of direction in column 1 bottom transverse power.
As Fig. 4, use this outrigger, only need place counterweight in the solid six face angle cages in outrigger, and do not need as former instrument at the scene to the device that applies vertical force around anchoring.Wherein the steel ingot parameter as counterweight is: thick 9.2cm, diameter 30cm, heavy 50kg.
As shown in Figure 5, the wide 5cm of angle steel 4 wings, thickness 0.5cm.
In above-mentioned outrigger, four anchor points of original device are transformed to vertical force load outrigger, utilize the solid six face angle cages of outrigger middle part angle steel 4 welding, fixedly counterweight and loading, can be more convenient and accurately to vertical force load, three-dimensional six face angle cages have also played fixing effect to the steel ingot counterweight, prevent steel ingot landing harm site operation personnel.
Claims (2)
1, a kind of outrigger that is used for direct shear apparatus comprises four root posts, it is characterized in that, every two adjacent upright top all is connected with crossbeam, and is connected with angle steel between described crossbeam and the column, and described angle steel forms solid six face angle cages that are used to place counterweight.
2, the outrigger that is used for direct shear apparatus according to claim 1 is characterized in that column bottom also is connected with crossbeam between the non-level of sample is subjected to two columns bottom on the force direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200540156U CN201242518Y (en) | 2008-08-08 | 2008-08-08 | External holder for direct shear apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200540156U CN201242518Y (en) | 2008-08-08 | 2008-08-08 | External holder for direct shear apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201242518Y true CN201242518Y (en) | 2009-05-20 |
Family
ID=40715808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200540156U Expired - Fee Related CN201242518Y (en) | 2008-08-08 | 2008-08-08 | External holder for direct shear apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201242518Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053255A (en) * | 2016-07-27 | 2016-10-26 | 中国包装科研测试中心 | Tray static shear property testing device and testing method thereof |
| CN108984961A (en) * | 2018-08-15 | 2018-12-11 | 江南大学 | Shear Strength Calculation method of the dust collector box body column under lateral load effect |
-
2008
- 2008-08-08 CN CNU2008200540156U patent/CN201242518Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053255A (en) * | 2016-07-27 | 2016-10-26 | 中国包装科研测试中心 | Tray static shear property testing device and testing method thereof |
| CN108984961A (en) * | 2018-08-15 | 2018-12-11 | 江南大学 | Shear Strength Calculation method of the dust collector box body column under lateral load effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20090520 Termination date: 20090908 |