CN202614661U - Improved device for determining bonding strength of sprayed concrete and rocks - Google Patents
Improved device for determining bonding strength of sprayed concrete and rocks Download PDFInfo
- Publication number
- CN202614661U CN202614661U CN201220272015XU CN201220272015U CN202614661U CN 202614661 U CN202614661 U CN 202614661U CN 201220272015X U CN201220272015X U CN 201220272015XU CN 201220272015 U CN201220272015 U CN 201220272015U CN 202614661 U CN202614661 U CN 202614661U
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- hook
- sprayed concrete
- rocks
- bonding strength
- improved device
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Abstract
The utility model discloses an improved device for determining bonding strength of sprayed concrete and rocks. The improved device is composed of a buried hook and a conversion connector, the buried hook is used for being connected with the concrete, the conversion connector is used for being connected with a draw bar of an anchor rod drawing instrument, one end of the buried hook is provided with threads, the other end of the buried hook is provided with a rod piece with a hanging ring, one end of the conversion connector is provided with a hanging hook, and the other end of the conversion connector is provided with an inner thread sleeve which is used for being connected with the draw bar of the anchor rod drawing instrument. According to the improved device for determining the bonding strength of the sprayed concrete and the rocks, negative influences of eccentric loading on determining results can be prevented, and reliability and stability of determination of the bonding strength of the sprayed concrete and the rocks are improved.
Description
Affiliated technical field
The utility model belongs to material properties test equipment, is specifically related to a kind of improvement sprayed concrete and rock cohesive strength determinator technical field.
Background technology
Along with tunnel construction develops to the buried direction of growing up gradually; Heat evil (high ground temperature) problem is day by day outstanding; Under wet (doing) thermal environment; Bigger variation will take place in the adhesive property of sprayed concrete and rock, possibly occur strength retraction aggravation, system bulk bad stability and with rock cohesive force heavy losses, even unsticking cracking forfeiture support action.So, demand urgently carrying out to the research of heat evil environment sprayed concrete and rock adhesive property.The cohesive strength influence factor is complicated, and cohesive strength is lower, how to avoid unfavorable factor as far as possible, guarantees that the reliability and stability that cohesive strength is measured become one of gordian technique of research.
The cohesive strength assay method that generally adopts at present mainly contains two kinds, and a kind of is splitting tension method, and another kind is to bore the core hubbing.Two kinds of methods respectively have relative merits; Splitting tension method subject matter is that sprayed concrete and rock adhesive surface are difficult in same vertical plane and cause splitting and draw test that the shearing phenomenon arranged; Shear resistance is higher than split tensile strength, cause the mensuration result value bigger than normal, and discreteness is big as a result; Bore core hubbing subject matter and be that boring buries pull bar and be difficult to guarantee that loading is not eccentric, and off-centre can cause adhesive surface to tear but not directly break, and causes data inaccurate, discreteness is very big.Given this, the adhesive property for better research heat evil environment sprayed concrete and rock is necessary the cohesive strength assay method is improved.
The utility model content
Above shortcoming in view of prior art; The purpose of the utility model is; Provide a kind of tradition of improving to bore the device that the core hubbing is measured sprayed concrete and rock cohesive strength; Between test specimen and anchor pole drawing appearance, make and be articulated and connected, prevent to load the adverse effect that off-centre causes, guarantee that determination data is reliable more and stable.
The purpose of the utility model is to realize through following means.
A kind of improved sprayed concrete and rock cohesive strength determinator are made up of with the X-over two parts that are used for connecting with anchor pole drawing appearance pull bar the hook that buries that is used for the concrete binding, and the said hook that buries is that an end has screw thread, and the other end has the rod member of link; One end of said pull bar X-over is hook, and the other end has and is used for the internal thread sleeve pipe that connects with anchor pole drawing appearance pull bar.
The stressed principle of the utility model is simple;, sprayed concrete and rock implant the hook that buries of an end band link on boning big plate; The X-over of anchor pole drawing appearance pull bar and end band hook connects, is carrying out cohesive strength when measuring, and hooks link and makes between test specimen and the anchor pole drawing appearance formation rotating hinged; Prevent to load the adverse effect that off-centre causes, improve the reliability and stability that cohesive strength is measured the result.
Description of drawings:
Fig. 1 is the user mode synoptic diagram of the utility model device band broken section.
Fig. 2 is the side view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and practical implementation the utility model is further described.
As shown in the figure; Improving sprayed concrete is made up of the X-over two parts that bury hook (1) and be used for connecting with anchor pole drawing appearance pull bar (6) that are used for the concrete binding with the device that the rock cohesive strength is measured; The said hook that buries is that an end has screw thread (2), and the other end has the rod member of link (7); One end of said pull bar X-over is hook (4), and the other end has and is used for the internal thread sleeve pipe (5) that connects with anchor pole drawing appearance pull bar.
During use; Sprayed concrete (3) and rock bond big plate (8) go up implant an end band annulus bury hook (1), anchor pole drawing appearance pull bar place is connected with the X-over that an end band is linked up with (4) through internal thread sleeve pipe (5), when carrying out cohesive strength mensuration; Hook (4) hook link (7) make between test specimen and the anchor pole drawing appearance form rotating hinged; Anchor pole drawing appearance is loaded, and reading obtains determination data.It is hinged that hook (4) and link (7) form, and makes anchor pole drawing appearance remain on axis direction to the loading of sample, prevented to load the eccentric adverse effect that causes, improved cohesive strength mensuration result's reliability and stability.
Claims (1)
1. improved sprayed concrete and rock cohesive strength determinator; It is characterized in that; The hook that buries by being used for the concrete binding is formed with the X-over two parts that are used for connecting with anchor pole drawing appearance pull bar, and the said hook that buries is that an end has screw thread, and the other end has the rod member of link; One end of said pull bar X-over is hook, and the other end has and is used for the internal thread sleeve pipe that connects with anchor pole drawing appearance pull bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220272015XU CN202614661U (en) | 2012-06-11 | 2012-06-11 | Improved device for determining bonding strength of sprayed concrete and rocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220272015XU CN202614661U (en) | 2012-06-11 | 2012-06-11 | Improved device for determining bonding strength of sprayed concrete and rocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202614661U true CN202614661U (en) | 2012-12-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220272015XU Expired - Fee Related CN202614661U (en) | 2012-06-11 | 2012-06-11 | Improved device for determining bonding strength of sprayed concrete and rocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202614661U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293098A (en) * | 2013-05-17 | 2013-09-11 | 中国科学院武汉岩土力学研究所 | Field measurement device for bonding strength of sprayed concrete-rock contact surface |
| CN104198374A (en) * | 2014-08-28 | 2014-12-10 | 河北工程大学 | Contact surface bonding strength measurement system |
| CN104865182A (en) * | 2015-01-15 | 2015-08-26 | 河北工程大学 | Drawing experiment apparatus for measuring bonding strength of concrete to surrounding rocks, and calculating method thereof |
| CN106290146A (en) * | 2015-05-13 | 2017-01-04 | 中国石油化工股份有限公司 | A kind of towed consolidation thing intensity measuring device and method thereof |
| 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 |
| CN109959605A (en) * | 2019-04-29 | 2019-07-02 | 中国水利水电第十二工程局有限公司 | On-site test gunite concrete and country rock bond strength testing method |
| CN110320156A (en) * | 2019-05-30 | 2019-10-11 | 中铁科学研究院有限公司 | A method of test gunite concrete and spraying waterproof adhesive strength |
| CN110514585A (en) * | 2019-09-10 | 2019-11-29 | 中国水利水电第五工程局有限公司 | A kind of gunite concrete and country rock adhesion strength measurement device |
| CN111198155A (en) * | 2020-01-13 | 2020-05-26 | 西南交通大学 | Sample forming device and method for flexible fiber drawing test |
| CN112816322A (en) * | 2020-12-28 | 2021-05-18 | 同济大学 | Wood transverse grain tensile strength detection device and field test method |
-
2012
- 2012-06-11 CN CN201220272015XU patent/CN202614661U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293098A (en) * | 2013-05-17 | 2013-09-11 | 中国科学院武汉岩土力学研究所 | Field measurement device for bonding strength of sprayed concrete-rock contact surface |
| CN103293098B (en) * | 2013-05-17 | 2015-06-17 | 中国科学院武汉岩土力学研究所 | Field measurement device for bonding strength of sprayed concrete-rock contact surface |
| CN104198374A (en) * | 2014-08-28 | 2014-12-10 | 河北工程大学 | Contact surface bonding strength measurement system |
| CN104865182A (en) * | 2015-01-15 | 2015-08-26 | 河北工程大学 | Drawing experiment apparatus for measuring bonding strength of concrete to surrounding rocks, and calculating method thereof |
| CN106290146B (en) * | 2015-05-13 | 2020-04-24 | 中国石油化工股份有限公司 | Dragging type concretion strength tester and method thereof |
| CN106290146A (en) * | 2015-05-13 | 2017-01-04 | 中国石油化工股份有限公司 | A kind of towed consolidation thing intensity measuring device and method thereof |
| 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 |
| CN109959605A (en) * | 2019-04-29 | 2019-07-02 | 中国水利水电第十二工程局有限公司 | On-site test gunite concrete and country rock bond strength testing method |
| CN109959605B (en) * | 2019-04-29 | 2021-11-19 | 中国水利水电第十二工程局有限公司 | Test method for detecting bonding strength of sprayed concrete and surrounding rock on site |
| CN110320156A (en) * | 2019-05-30 | 2019-10-11 | 中铁科学研究院有限公司 | A method of test gunite concrete and spraying waterproof adhesive strength |
| CN110514585A (en) * | 2019-09-10 | 2019-11-29 | 中国水利水电第五工程局有限公司 | A kind of gunite concrete and country rock adhesion strength measurement device |
| CN111198155A (en) * | 2020-01-13 | 2020-05-26 | 西南交通大学 | Sample forming device and method for flexible fiber drawing test |
| CN112816322A (en) * | 2020-12-28 | 2021-05-18 | 同济大学 | Wood transverse grain tensile strength detection device and field test method |
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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 |
Granted publication date: 20121219 Termination date: 20150611 |
|
| EXPY | Termination of patent right or utility model |