CN201159709Y - Shearing force box for concrete shear test - Google Patents
Shearing force box for concrete shear test Download PDFInfo
- Publication number
- CN201159709Y CN201159709Y CNU2008200284060U CN200820028406U CN201159709Y CN 201159709 Y CN201159709 Y CN 201159709Y CN U2008200284060 U CNU2008200284060 U CN U2008200284060U CN 200820028406 U CN200820028406 U CN 200820028406U CN 201159709 Y CN201159709 Y CN 201159709Y
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- CN
- China
- Prior art keywords
- box
- shearing
- shearing box
- shear
- shear apparatus
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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 - Lifetime
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a box-shear apparatus used for the concrete shear test, comprising a lower box-shear apparatus arranged on a bottom plate and an upper box-shear apparatus arranged on the upper part of the lower box-shear apparatus and provided with a push plate. The upper box-shear apparatus is connected with the lower box-shear apparatus through a meshing mechanism; a steel ball groove is arranged on the frame of the lower box-shear apparatus along the shearing direction; steel balls are arranged in the groove and able to roll in the groove. The box-shear apparatus used for the concrete shear test has the advantages of reasonable design, simple structure, eliminating the horizontal friction resistance between the upper box-shear apparatus and the lower box-shear apparatus during the test process, ensuring the normal stress to be constant under the situation that no pressure stabilizing device is arranged additionally, enabling the resultant force of the normal force and the shearing force of the loading system to pass the midpoint of the shearing plane and improving the credibility of the shear test result greatly.
Description
Technical field
The utility model relates to a kind of water conservancy project material test device, particularly a kind of concrete shearing test shearing box.
Background technology
For globality, the stability of giving the evaluation concrete structure provides foundation, need to measure the shearing strength of concrete and concrete and other materials faying face.The concrete shearing test instrument can be measured anti-shear concrete intensity, and this test instrument is made up of shearing box, loading lifting jack, roller bearing row, power transmission cushion block and rigid mount etc.
When carrying out the concrete shearing test, the normal direction load is divided into Pyatyi by the normal direction peak load that designs and applies.When the loading system of normal direction and shearing is installed, should guarantee making a concerted effort of normal force and shearing force by the mid point of shear surface.Because concrete shearing strength is higher, when normal stress was big, the reacting force of concrete sample can cause the skew of concrete shearing face, and can therefore keep the constant of normal stress be concrete shearing test key of success.
When normal stress was big, common concrete shearing box can't keep the constant of normal stress, often caused the failure tested, can't reach the test findings of expection.
The utility model content
The purpose of this utility model is the deficiency that exists at prior art, provide a kind of simple in structure, stable work in work, under the situation of not setting up stable-pressure device, the constant of normal stress be can guarantee, the normal force of loading system and making a concerted effort of shearing force made by the concrete shearing test shearing box of shear surface mid point.
The technical solution of the utility model is: a kind of concrete shearing test shearing box, comprise the following shearing box that is arranged on the base plate and be arranged on down shearing box top, have the last shearing box of push pedal that it is characterized in that: the shearing box is connected by interlock mechanism with following shearing box on described.
The utility model compared with prior art has the following advantages: the utility model is reasonable in design, simple in structure, not only eliminated the horizontal frictional resistance between last shearing box and following shearing box in the process of the test, and under the situation of not setting up stable-pressure device, effectively guarantee the constant of normal stress, make the normal force of loading system and shearing force make a concerted effort increased shear test result's credibility greatly by the mid point of shear surface.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the syndeton synoptic diagram of shearing box 5 under the utility model, steel bead groove 8 and steel ball 7.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, the utility model comprises the following shearing box that is arranged on the base plate 65 and is arranged on down shearing box 5 tops, has the last shearing box 1 of push pedal 2, described on shearing box 1 be connected by interlock mechanism with following shearing box 5.
Described interlock mechanism comprises biteplate 3 and occlusal crib 4, described biteplate 3 is arranged on the both sides frame of shearing box 1 shear direction, the basal sliding of biteplate 3 is arranged in the occlusal crib 4, and occlusal crib 4 is arranged on the both sides frame with last shearing box 1 corresponding shearing box 5 down.
As shown in Figure 3, the end face of shearing box 5 shear direction both sides frames is provided with steel bead groove 8 under being positioned at, and rolling in the steel bead groove 8 is provided with steel ball 7.
The utility model carries out work according to the following steps:
(1) will descend shearing box 5 to be positioned on the rigid mount of concrete shearing test instrument, steel ball 7 will be put into down in the steel bead groove 8 on the shearing box 5 shear direction frames;
(2) occlusal crib 4 that will be arranged on following shearing box 5 two sides, biteplate 3 edges on the shearing box 1 slips into slowly, aligns;
(3) concrete sample is placed the shearing box, put force transmitting board and roller bearing row, loading system etc. is installed again, can carry out the concrete shearing test according to the correlation test step.
Claims (3)
1, a kind of concrete shearing test shearing box, comprise being arranged on the following shearing box (5) on the base plate (6) and being arranged on down shearing box (5) top, having the last shearing box (1) of push pedal (2) that it is characterized in that: the described shearing box (1) of going up is connected by interlock mechanism with following shearing box (5).
2, concrete shearing test shearing box according to claim 1, it is characterized in that: described interlock mechanism comprises biteplate (3) and occlusal crib (4), described biteplate (3) is arranged on the both sides frame of shearing box (1) shear direction, the basal sliding of biteplate (3) is arranged in the occlusal crib (4), and occlusal crib (4) is arranged on the both sides frame with the corresponding down shearing box (5) of last shearing box (1).
3, concrete shearing test shearing box according to claim 1, it is characterized in that: the end face of shearing box (5) shear direction both sides frame is provided with steel bead groove (8) under being positioned at, and rolling in the steel bead groove (8) is provided with steel ball (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200284060U CN201159709Y (en) | 2008-02-29 | 2008-02-29 | Shearing force box for concrete shear test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200284060U CN201159709Y (en) | 2008-02-29 | 2008-02-29 | Shearing force box for concrete shear test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201159709Y true CN201159709Y (en) | 2008-12-03 |
Family
ID=40110293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200284060U Expired - Lifetime CN201159709Y (en) | 2008-02-29 | 2008-02-29 | Shearing force box for concrete shear test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201159709Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454161A (en) * | 2013-08-15 | 2013-12-18 | 西安理工大学 | Dynamic simple shear apparatus of servo cylinder-driven cubic articulated mechanism |
| CN103698230A (en) * | 2013-12-11 | 2014-04-02 | 攀钢集团西昌钢钒有限公司 | Manual detection device for anti-shearing force of tamping briquette |
| CN104062175A (en) * | 2014-06-25 | 2014-09-24 | 成都东华卓越科技有限公司 | Guiding-antirotation-antifriction device for shearing box |
| CN105758736A (en) * | 2014-12-11 | 2016-07-13 | 国家电网公司 | In-situ direct shear device with self-balanced shear forces |
-
2008
- 2008-02-29 CN CNU2008200284060U patent/CN201159709Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454161A (en) * | 2013-08-15 | 2013-12-18 | 西安理工大学 | Dynamic simple shear apparatus of servo cylinder-driven cubic articulated mechanism |
| CN103454161B (en) * | 2013-08-15 | 2015-06-24 | 西安理工大学 | Dynamic simple shear apparatus of servo cylinder-driven cubic articulated mechanism |
| CN103698230A (en) * | 2013-12-11 | 2014-04-02 | 攀钢集团西昌钢钒有限公司 | Manual detection device for anti-shearing force of tamping briquette |
| CN103698230B (en) * | 2013-12-11 | 2016-06-08 | 攀钢集团西昌钢钒有限公司 | Tamping briquette anti-shearing force manual detection device |
| CN104062175A (en) * | 2014-06-25 | 2014-09-24 | 成都东华卓越科技有限公司 | Guiding-antirotation-antifriction device for shearing box |
| CN105758736A (en) * | 2014-12-11 | 2016-07-13 | 国家电网公司 | In-situ direct shear device with self-balanced shear forces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081203 |