CN202057544U - Attached type buried rod used for concrete limit stretching test piece - Google Patents
Attached type buried rod used for concrete limit stretching test piece Download PDFInfo
- Publication number
- CN202057544U CN202057544U CN2011201528933U CN201120152893U CN202057544U CN 202057544 U CN202057544 U CN 202057544U CN 2011201528933 U CN2011201528933 U CN 2011201528933U CN 201120152893 U CN201120152893 U CN 201120152893U CN 202057544 U CN202057544 U CN 202057544U
- Authority
- CN
- China
- Prior art keywords
- bar
- buried rod
- test piece
- buried
- concrete
- 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
Images
Abstract
An attached type buried rod used for a concrete limit stretching test piece comprises a buried rod. Threads are arranged at one end of the buried rod, and a positioning nut and a hold-down nut are arranged on the buried rod by the threads. The buried rod is shaped like a bar, and rough pitch threads are distributed on the outer surface of the bar. In the utility model, the buried rod is fastened at the center of an end template by the positioning nut and the hold-down nut so as to ensure the consistency between the axis of a pre-buried part and the axis of the test piece; and the rough pitch threads distributed on the outer surface of the buried rod increase the holding force of concrete on the buried rod. The device is convenient to use, avoids disadvantaged influence on the test piece due to the infirm fixing of the buried piece, and the test result is more accurate due to the strong consistency of stretching forced direction of the test piece and the axis of the test piece. The buried rod can be directly manufactured by adopting common building ribbed reinforcement, thus not only ensuring the occlusion force with the concrete, but lowering the cost.
Description
Technical field
The utility model relates to a kind of adhesion type that is used for concrete ultimate elongation test usefulness and buries bar.
Background technology
Specimen molding link in the test of concrete ultimate elongation respectively is embedded into a draw ring usually or buries bar at the test specimen two ends, be connected with testing machine when being used for stretched operation.Draw ring commonly used or bury bar and bury the hole underground by reserving in die trial end baffle centre, draw ring or bury bar and pass the die trial end baffle and be embedded in the concrete sample.This structure owing to do not take better firmly measure, often causes draw ring or buries bar burial place off-center axis in the specimen molding operation, causes test findings inaccurate; Because draw ring and concrete surface are long-pending less, and concrete and draw ring snap-in force are not enough, draw ring is drawn out easily when tension test in addition; Owing to need bear certain pulling force, draw ring need adopt Materials with High Strength processing, and cost is higher.Adhesion type buries bar and has overcome these deficiencies, and it is more reasonable to design, and it is more convenient to use, and price is cheaper.
Summary of the invention
The utility model purpose is to provide a kind of adhesion type that is used for concrete ultimate elongation test specimen to bury bar, and this adhesion type buries bar can remedy draw ring and common deficiency of burying bar, guarantees to bury bar on the test specimen central axis, warranty test result's reliability.
The purpose of this utility model is achieved in that a kind of concrete ultimate elongation test specimen buries bar with adhesion type, comprises and imbeds bar, and imbed bar one end and be provided with screw thread, setscrew nut and hold-down nut are installed in by screw thread and imbed on the bar.Imbedding bar is a club, and the club outside surface is furnished with coarse thread.
The concrete ultimate elongation test specimen that the utility model provides buries bar with adhesion type, by setscrew nut and hold-down nut, will imbed the center that bar is fastened on end template, has guaranteed that the axis of pre-buried part is consistent with the test specimen axis; Imbed rod outer surface and be covered with coarse thread, increased concrete imbedding the bond stress of bar.This device is easy to use, has avoided because of the fixing insecure adverse effect of bringing to test specimen of embedded part, and test specimen stretches and is subjected to force direction and its Axis Consistency strong, makes test findings more accurate.Imbedding bar can directly adopt common building to make with Ribbed Bar, has promptly guaranteed and concrete snap-in force, has reduced cost again.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises imbeds bar 1, imbeds bar 1 one ends and is provided with screw thread, and setscrew nut 2 and hold-down nut 3 are installed in by screw thread and imbed on the bar 1.Imbedding bar 1 is a club, and the club outside surface is furnished with coarse thread.
The course of work of the present utility model is as follows: when the concrete sample moulding, at first clear up the center pit of end template 4, earlier with on the setscrew nut 2 to imbedding bar 1 and tightening, to imbed bar 1 then has screw thread one end to pass center pit from end template 4 inboards, make setscrew nut 2 cling to central hole, to imbed the center that bar 1 and setscrew nut 2 are fastened on end template 4 with hold-down nut 3, axis is promptly perpendicular to the big face of end template 4.Concrete withdraws from hold-down nut 3 after hardening in template, form removal is imbedded bar 1 and setscrew nut 2 and promptly stayed in the concrete, connects testing machine during for tension test and uses.Imbed behind the bar 1 external suitable stretching clamp and to connect testing machine can be for tension test the time and use.This device needs symmetry respectively to bury 1 cover underground at the two ends of a concrete ultimate elongation test specimen.Test specimen is broken test piece end after destroying, and takes out and imbeds bar 1 and setscrew nut 2, cleans out, and is coated with oil guard, for reusing.
Claims (2)
1. a concrete ultimate elongation test specimen buries bar with adhesion type, comprises and imbeds bar (1), imbeds bar (1) one end and establishes screw thread, and setscrew nut (2) and hold-down nut (3) are installed in by screw thread and imbed on the bar (1).
2. concrete ultimate elongation test specimen according to claim 1 buries bar with adhesion type, it is characterized in that: imbedding bar (1) is a club, and the club outside surface is furnished with coarse thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201528933U CN202057544U (en) | 2011-05-14 | 2011-05-14 | Attached type buried rod used for concrete limit stretching test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201528933U CN202057544U (en) | 2011-05-14 | 2011-05-14 | Attached type buried rod used for concrete limit stretching test piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202057544U true CN202057544U (en) | 2011-11-30 |
Family
ID=45017515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201528933U Expired - Fee Related CN202057544U (en) | 2011-05-14 | 2011-05-14 | Attached type buried rod used for concrete limit stretching test piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202057544U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007019A (en) * | 2014-02-21 | 2014-08-27 | 河海大学 | Pressing, rotating and stretching fatigue test device |
| CN109959606A (en) * | 2019-04-29 | 2019-07-02 | 中国水利水电第十二工程局有限公司 | The device of on-site test gunite concrete and country rock bonding strength test |
-
2011
- 2011-05-14 CN CN2011201528933U patent/CN202057544U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007019A (en) * | 2014-02-21 | 2014-08-27 | 河海大学 | Pressing, rotating and stretching fatigue test device |
| CN109959606A (en) * | 2019-04-29 | 2019-07-02 | 中国水利水电第十二工程局有限公司 | The device of on-site test gunite concrete and country rock bonding strength test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203531401U (en) | Inclined supporting and fixing device between wall template and ground | |
| CN201796172U (en) | Bump detecting device for loose tube of optical cable | |
| CN202057544U (en) | Attached type buried rod used for concrete limit stretching test piece | |
| CN102012345A (en) | Universal clamping mechanism for bolt/nut mechanical test | |
| CN203755662U (en) | Split fixing device for beam column form | |
| CN201137216Y (en) | Steel element and concrete element connection anchor bolt connected long joint | |
| CN203755663U (en) | Split fixing device for wall column form | |
| CN201945501U (en) | General clamping mechanism for mechanical test of bolts/nuts | |
| CN201945499U (en) | Submersible buried rod for concrete limit tension specimen | |
| CN215497967U (en) | Cable testing bridge location line unwrapping wire auxiliary device | |
| CN203534903U (en) | Test fixture for rupture of elevator steel wire ropes | |
| CN202024930U (en) | Device for fixing screw rod during screw rod tensile strength detection | |
| CN204492012U (en) | A kind of bar connecting device | |
| CN204855251U (en) | Strenghthened type screw -thread steel anchor clamps | |
| CN205709591U (en) | The novel flexible attachment device of derrick crane | |
| CN204174934U (en) | The quick attachment fastener of a kind of round bar through walls | |
| CN209958224U (en) | Prestressed steel strand pulling device | |
| CN203050118U (en) | Easily-assembling type discharging platform steel wire rope pulling ring | |
| CN205421765U (en) | Depend on wall handrail mounting structure between house stair | |
| CN205371238U (en) | Rag bolt with spline | |
| CN103851049A (en) | Expansion bolt | |
| CN213661189U (en) | Prefabricated sealing cement cold-shrinking sleeve | |
| CN103696789A (en) | Squirrel cage type anchor cable for mine | |
| CN104131702A (en) | Through-wall circular rod rapidly-fixing fastener | |
| CN205785449U (en) | A kind of circular ring type LOAD CELLS |
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: 20111130 Termination date: 20140514 |