CN203786016U - Reinforcing steel bar and concrete bonding strength test auxiliary device - Google Patents
Reinforcing steel bar and concrete bonding strength test auxiliary device Download PDFInfo
- Publication number
- CN203786016U CN203786016U CN201420107149.5U CN201420107149U CN203786016U CN 203786016 U CN203786016 U CN 203786016U CN 201420107149 U CN201420107149 U CN 201420107149U CN 203786016 U CN203786016 U CN 203786016U
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- China
- Prior art keywords
- loading frame
- ball pivot
- reinforcing bar
- steel bar
- reinforcing steel
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- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to the technical field of civil engineering and particularly relates to a reinforcing steel bar and concrete bonding strength test auxiliary device. A loading framework is arranged to be hollow, wherein a lower bottom plate of the loading framework is used for placing a reinforcing steel bar and concrete test piece; the lower bottom plate of the loading framework is equipped with a convenient opening; a spherical hinge connecting rod is arranged on the upper part of the loading framework; the spherical hinge connecting rod is provided with a spherical hinge. The device disclosed by the utility model can measure slippage of the free end of the reinforcing steel bar. The device further has the characteristics of being capable of avoiding bending moment produced in the reinforcing steel bar due to non-aligning, being convenient to place the test piece, and the like.
Description
Technical field
The utility model relates to technical field of civil engineering, and spy relates to a kind of reinforcing bar and Concrete Bond Strength experiment auxiliary device.
Background technology
In reinforced concrete structure, mutual bonding between reinforcing bar and concrete is the two coefficient key, be that cohesive action between reinforcing bar and concrete makes bi-material can give full play to advantage separately, thereby set up the load-bearing capacity of reinforced concrete structure.In practice, how to measure the cohesive force between reinforcing bar and concrete? in standard < < Standard for test methods of concrete structures > > GB 50152, recommend adoption is extracted test specimen (test specimen extracted in abbreviation) without the cube center of transverse steel and is determined.
But general material test machine clamp can not meet the clamping requirement to RC Bond Specimen, so be commonly used at present the way of burying tension reinforcement in concrete underground, this way can increase concrete consumption on the one hand, can not measure on the other hand the free-ended slippage of reinforcing bar.The utility model patent is used for addressing this problem.
Summary of the invention
Deficiency for background technology, the utility model is set to hollow by loading frame, its lower shoe is used for placing RC Bond Specimen, loading frame upper plate is opened a circular port, loading frame top is provided with ball pivot connecting rod, and ball pivot connecting link is with ball pivot, and ball pivot connecting rod is connected with testing machine upper grip through circular port, the effect of ball pivot is the centering effect that regulates loading frame, avoids the moment of flexure producing in reinforcing bar due to non-centering; Test specimen is directly held on the lower shoe of loading frame, makes this device can measure the free-ended slippage of reinforcing bar.This device also has the features such as the test specimen of convenience operation.
The technical solution of the utility model is:
A kind of reinforcing bar and Concrete Bond Strength experiment auxiliary device, comprise loading frame, loading frame hollow and its lower shoe are used for placing RC Bond Specimen, test specimen comprises reinforcing bar, loading frame upper plate is opened a circular port, it is characterized in that: described loading frame top is provided with ball pivot connecting rod, and ball pivot connecting link is with ball pivot, ball pivot connecting rod is connected in testing machine upper grip through upper plate circular hole.
Servicing unit as above, is characterized in that: the first support is installed on described test specimen top, at the first support, is provided with the first displacement meter; Described loading frame lower shoe is installed the second support, at the second support, is provided with the second displacement meter.
Servicing unit as above, is characterized in that: loading frame lower shoe is half of opening, and the reinforcing bar of test specimen is directly placed from opening part.
Servicing unit as above, is characterized in that: loading frame is welded into a framework by four block plates.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model strength test servicing unit;
Fig. 2 is the vertical view of the utility model strength test servicing unit;
Fig. 3 is the utility model loading frame lower shoe structural representation;
Fig. 4 is the utility model ball pivot connecting link front view;
Fig. 5 is the utility model ball pivot connecting link vertical view.
Embodiment
Description of reference numerals: 1-ball pivot connecting rod, 2-loading frame, the 3-the first support, the 4-the first displacement meter, 5-test specimen, 6-reinforcing bar, the 7-the second support, the 8-the second displacement meter
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, reinforcing bar of the present utility model and Concrete Bond Strength experiment auxiliary device comprise loading frame 2, loading frame 2 tops are provided with ball pivot connecting rod 1, ball pivot connecting rod 1 is connected with the upper grip of Material Testing Machine, ball pivot connecting link 1 is with ball pivot, as shown in Figure 4 and Figure 5, between ball pivot and roof hole, can allow to occur small rotation, if reinforcing bar 6 is non-parallel with test specimen axis when test specimen 5 is made, now the minor rotation between ball pivot and roof hole can be avoided the moment of flexure producing in reinforcing bar due to non-centering, ball pivot connecting link 1 can play the effect that regulates centering like this.Loading frame 2 hollows and its lower shoe are used for placing RC Bond Specimen 5, and test specimen 5 comprises reinforcing bar 6.
Loading frame 2 is welded into a framework by four block plates, as shown in Figure 3, loading frame 2 lower shoes are half of openings, and concrete binding test specimen 5 is put into loading frame 2 experiments, reinforcing bar 6 in test specimen 5 is directly placed from opening part, through lower shoe opening, is connected with Material Testing Machine lower chuck.
In order to measure reinforcing bar free end and the displacement of the end that stretches, on test specimen 5 tops, the first support 3 is installed, at the first support 3, be provided with the first displacement meter 4; At loading frame 2 lower shoes, the second support 7 is installed, at the second support 7, is provided with the second displacement meter 8.
The course of work of the present utility model is:
1, loading frame 2 is installed on to the upper grip of Material Testing Machine by ball pivot connecting link 1;
2, the RC Bond Specimen 5 for testing of making is installed in loading frame 2, reinforcing bar 6, through loading frame 2 lower shoe openings, avoids the two to have contact to produce friction;
3, by adjusting ball pivot connecting link 1, make reinforcing bar 6 and Material Testing Machine lower chuck centering, avoid producing bias or flecition;
4, displacement meter the first support 3 and the second support 7 are installed, then the first displacement meter 4 and the second displacement meter 8 are installed, and adjust to meet the requirement of determining displacement;
5, in testing machine, load makes zero, to eliminate the weight impact of the devices such as loading frame, concrete sample and displacement transducer;
6, the reinforcing bar 6 in RC Bond Specimen 5 clamps by Material Testing Machine lower chuck, by the test method of standard, carries out reinforcing bar and Concrete Bond Strength test.
Claims (4)
1. reinforcing bar and a Concrete Bond Strength experiment auxiliary device, comprise loading frame, and loading frame hollow and its lower shoe are used for placing RC Bond Specimen, and test specimen comprises reinforcing bar; Loading frame upper plate is opened a circular port, it is characterized in that: described loading frame top is provided with ball pivot connecting rod, and ball pivot connecting link is with ball pivot, and ball pivot connecting rod, through upper plate circular port, is connected with Material Testing Machine upper grip.
2. servicing unit as claimed in claim 1, is characterized in that: the first support is installed on described test specimen top, at the first support, is provided with the first displacement meter; Described loading frame lower shoe is installed the second support, at the second support, is provided with the second displacement meter.
3. servicing unit as claimed in claim 1 or 2, is characterized in that: described loading frame lower shoe is half of opening, and test specimen is held on lower shoe, and the reinforcing bar in test specimen is directly connected with the lower chuck of testing machine through opening part.
4. servicing unit as claimed in claim 1 or 2, is characterized in that: described loading frame is welded into a framework by four block plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107149.5U CN203786016U (en) | 2014-03-11 | 2014-03-11 | Reinforcing steel bar and concrete bonding strength test auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107149.5U CN203786016U (en) | 2014-03-11 | 2014-03-11 | Reinforcing steel bar and concrete bonding strength test auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786016U true CN203786016U (en) | 2014-08-20 |
Family
ID=51322193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420107149.5U Expired - Fee Related CN203786016U (en) | 2014-03-11 | 2014-03-11 | Reinforcing steel bar and concrete bonding strength test auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203786016U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819933A (en) * | 2015-05-20 | 2015-08-05 | 河海大学 | Static and dynamic bonding-slipping whole-process curve testing apparatus and testing method thereof |
| CN104833631A (en) * | 2015-02-04 | 2015-08-12 | 三峡大学 | Self-balancing reinforced concrete bonding and anchoring performance test instrument |
| CN107247020A (en) * | 2017-07-24 | 2017-10-13 | 湖南大学 | A kind of reinforcing bar and concrete drawing experimental rig for eliminating high temperature influence |
| CN108801906A (en) * | 2018-06-05 | 2018-11-13 | 西安建筑科技大学 | A kind of loading device and method for bond-slip properties experiment |
-
2014
- 2014-03-11 CN CN201420107149.5U patent/CN203786016U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833631A (en) * | 2015-02-04 | 2015-08-12 | 三峡大学 | Self-balancing reinforced concrete bonding and anchoring performance test instrument |
| CN104833631B (en) * | 2015-02-04 | 2017-11-17 | 三峡大学 | Self-balancing type armored concrete bond and anchor property tester |
| CN104819933A (en) * | 2015-05-20 | 2015-08-05 | 河海大学 | Static and dynamic bonding-slipping whole-process curve testing apparatus and testing method thereof |
| CN107247020A (en) * | 2017-07-24 | 2017-10-13 | 湖南大学 | A kind of reinforcing bar and concrete drawing experimental rig for eliminating high temperature influence |
| CN108801906A (en) * | 2018-06-05 | 2018-11-13 | 西安建筑科技大学 | A kind of loading device and method for bond-slip properties experiment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140820 Termination date: 20160311 |