CN103868796B - A kind of concrete core sample tensile test locking device - Google Patents
A kind of concrete core sample tensile test locking device Download PDFInfo
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- CN103868796B CN103868796B CN201410090794.5A CN201410090794A CN103868796B CN 103868796 B CN103868796 B CN 103868796B CN 201410090794 A CN201410090794 A CN 201410090794A CN 103868796 B CN103868796 B CN 103868796B
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- stud
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- lock sleeve
- screw
- sleeve
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- 238000009864 tensile test Methods 0.000 title claims abstract description 9
- 241001074085 Scophthalmus aquosus Species 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910000754 Wrought iron Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of concrete core sample tensile test locking device, it is characterized in that including: supporting seat (3), locking member (1) it is provided with in supporting seat, locking member includes stud (1a), the lock sleeve (1b) of taper it is provided with in one end of stud, the other end is provided with at least two screw (1c), it is socketed a sleeve pipe (2) at lock sleeve (1b), it is connected a locking nut (4) at stud, locking nut and lock sleeve (1b) corresponding matching, supporting seat (3) is additionally provided with strain gauge (10), strain gauge is connected by screw rod (7) and one of them screw (1c)。Advantages of the present invention: this apparatus structure is simple, light and handy, easy to install, easily maintenance, cost is low, it is easy to carry, it is used not only for the bonding situation of New And Old Concrete Structures is tested and evaluated, but also this device can be utilized, concrete core sample will be not easily taken out of after entering brill and take out easily。
Description
Technical field
The present invention relates to a kind of mechanical locking device, particularly to a kind of concrete core sample tensile test locking device。
Background technology
Last century six the seventies, China is newly-built many hydraulic engineerings, architectural engineering, these engineerings are through semicentennial operation, and the defect that concrete aging comes off, steel bar corrosion exposes have occurred in a lot of building surfaces。When this kind of building strengthening, a lot of schemes all have selected the method that aging concrete plate is rejected also outsourcing novel concrete, it is clear that after reinforcing, the adhesive strength of New-old concrete is particularly significant。The method adopted at present is mainly after rig enters to bore, and will be left in the core end in structure and is stained with and bears steel plate, by tensile tester, steel plate is applied pulling force and test the adhesion strength of New-old concrete。
The performance that the maximum drawback of the method for stick steel plate is bonded adhesives is difficult to meet requirement；Secondly test period is long, and bonded adhesives generally requires a couple of days and could embody its intensity, is unfavorable for that tests quickly carries out。Therefore, explore a kind of novel test technology, the development promoting Mechanics Performance of Adherence of New intensity detection technology is significant, through extensively retrieval, not yet find ideal technical scheme。
Summary of the invention
The invention aims to solve in present stage concrete core sample tensile test the shortcomings such as core is fixing loosely, test period length, and a kind of concrete core sample tensile test locking device proposed。
To achieve these goals, present invention employs following technical scheme:
A kind of concrete core sample tensile test locking device, it is characterized in that including: supporting seat, locking member it is provided with in supporting seat, locking member includes stud, is provided with the lock sleeve of taper in one end of stud, the other end is provided with at least two screw, is socketed a sleeve pipe at lock sleeve, it is connected a locking nut at stud, locking nut and lock sleeve corresponding matching, be additionally provided with strain gauge on supporting seat, and strain gauge is connected by screw rod and one of them screw。
On the basis of technique scheme, it is possible to have technical scheme further below:
Described supporting seat includes sleeve, is equipped with flange at the two ends of sleeve, and described strain gauge connects on superincumbent flange。
The inner surface of described lock sleeve is provided with clamping screw thread, during assembling, is respectively cooperating with connecting a securing member in the two of which screw of stud end face。
The lateral surface of described locking nut is provided with at least one counterbore。
Locking member is socketed on concrete core by this device, is gradually increased pulling force by strain gauge, and records the force value that concrete core sample breaks the concentration power in moment, reaches to determine the purpose of Mechanics Performance of Adherence of New intensity。Force value when usual Mechanics Performance of Adherence of New position is broken is 2 ~ 6kN, and for ensureing the precision of experimental data, the maximum range of tensile tester must not exceed 10kN, and reading when can automatically record peak value。
It is an advantage of the current invention that: this apparatus structure is simple, light and handy, easy to install, easily maintenance, cost is low, it is easy to carry, it is used not only for the bonding situation of New And Old Concrete Structures is tested and evaluated, but also this device can be utilized, concrete core sample will be not easily taken out of after entering brill and take out easily。
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of the present invention；
Fig. 2 is the installation diagram of Fig. 1；
Fig. 3 is the structural representation of locking member。
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of concrete core sample tensile test locking device provided by the invention, it is characterised in that including:
Supporting seat 3, supporting seat 3 includes sleeve 3a, is equipped with flange 3b at the two ends of sleeve, and described strain gauge 10 connects on superincumbent flange 3b, and sleeve is placed on concrete 6, the core 6a corresponding matching of sleeve 3a and concrete 6, is provided with locking member 1 in sleeve 3a。
Shown in Fig. 3, described locking member 1 includes stud 1a, be provided with the lock sleeve 1b of taper in one end of stud, the other end is provided with three screw 1c, described lock sleeve is socketed on core 6a, the inner surface of lock sleeve is provided with clamping screw thread 1c, this design can increase the frictional force of lock sleeve and core so that locking member 1 will not produce when clamping core to slide。Uniform four elongated open slot 1d on the jacket wall of lock sleeve 1b, the two ends of open slot are separately positioned on the two ends of lock sleeve, further respectively have a through hole 1e in the inner of each open slot, the diameter of through hole is more than the width of open slot, and each open slot all runs through jacket wall。Three described screw 1c be arranged on stud end face same diametrically, and the screw of centre is arranged on the center of its place end face。
Difference slip joint casing 2 and locking nut 4 on locking member 1, described sleeve pipe 2 is a ladder pipe, the bigger pipe box that pipe box is connected on lock sleeve 1b, upper end is less in its front end is connected on stud 1a, uniform four counterbore 4a on the lateral surface of described locking nut 4, locking nut 4 and stud 1a are threaded connection, and locking nut coordinates with the end contact of lock sleeve, when locking nut is rotated down, sleeve pipe compresses lock sleeve, so that lock sleeve clamping core 6a。
Placing a strain gauge 10 on the flange 3b of supporting seat 3 upper surface, strain gauge is connected by the screw 1c that screw rod 7 is middle with locking member 1 end face。
It it is the clamping force increasing locking member 1 with core 6a during assembling, can be respectively cooperating with connecting a securing member 5 in the screw 1c of locking member 1 end face both sides, securing member can be selected for bolt, an iron staff 8 is placed between two securing members, one of them four counterbore 4a of locking nut 4 insert rod iron 9, by rod iron 9 rotational lock nut 4, sleeve pipe 2 is compressed lock sleeve 1b, after fixing, take off iron staff 8 and rod iron 9 respectively, strain gauge 10 is installed。
Claims (1)
1. a concrete core sample tensile test locking device, it is characterized in that including: supporting seat (3), locking member (1) it is provided with in supporting seat, locking member includes stud (la), the lock sleeve (lb) of taper it is provided with in one end of stud, the other end is provided with at least two screw (lc), it is socketed a sleeve pipe (2) at lock sleeve (lb), it is connected a locking nut (4) at stud (la), locking nut and lock sleeve (lb) corresponding matching, supporting seat (3) is additionally provided with strain gauge (10), strain gauge is connected by screw rod (7) and one of them screw (lc)；
Described supporting seat (3) includes sleeve (3a), is equipped with flange (3b) at the two ends of sleeve, and described strain gauge (10) connects on superincumbent flange (3b)；
The inner surface of described lock sleeve (lb) is provided with clamping screw thread (lc), during assembling, is respectively cooperating with connecting a securing member (5) in the two of which screw (lc) of stud (la) end face；
The lateral surface of described locking nut (4) is provided with at least one counterbore (4a)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410090794.5A CN103868796B (en) | 2014-03-12 | 2014-03-12 | A kind of concrete core sample tensile test locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410090794.5A CN103868796B (en) | 2014-03-12 | 2014-03-12 | A kind of concrete core sample tensile test locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103868796A CN103868796A (en) | 2014-06-18 |
| CN103868796B true CN103868796B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410090794.5A Active CN103868796B (en) | 2014-03-12 | 2014-03-12 | A kind of concrete core sample tensile test locking device |
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| Country | Link |
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| CN (1) | CN103868796B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043877B (en) * | 2015-08-26 | 2018-02-16 | 长江水利委员会长江科学院 | A kind of New-core sample test for tensile strength device |
| CN106289977B (en) * | 2016-08-15 | 2023-02-28 | 南宁学院 | Bolt concrete tensile test device and test method |
| CN107727568B (en) * | 2017-11-01 | 2018-09-04 | 中国石油大学(北京) | Rock frictional test tests clamping device and leveling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3545263A (en) * | 1968-01-26 | 1970-12-08 | Saml Denison & Son Ltd | Compression testing machine |
| CN101526451A (en) * | 2009-04-01 | 2009-09-09 | 西南交通大学 | High temperature fatigue test clamp for metal thin wall equal-wall thickness tube |
| JP2012141136A (en) * | 2010-12-28 | 2012-07-26 | Metropolitan Expressway Co Ltd | Direct grip testing method and test jig |
| CN102866056A (en) * | 2012-09-26 | 2013-01-09 | 深圳中建院建筑科技有限公司 | Pull type direct pulling device |
| CN203811466U (en) * | 2014-03-12 | 2014-09-03 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Locking device for tensile test on concrete core sample |
-
2014
- 2014-03-12 CN CN201410090794.5A patent/CN103868796B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3545263A (en) * | 1968-01-26 | 1970-12-08 | Saml Denison & Son Ltd | Compression testing machine |
| CN101526451A (en) * | 2009-04-01 | 2009-09-09 | 西南交通大学 | High temperature fatigue test clamp for metal thin wall equal-wall thickness tube |
| JP2012141136A (en) * | 2010-12-28 | 2012-07-26 | Metropolitan Expressway Co Ltd | Direct grip testing method and test jig |
| CN102866056A (en) * | 2012-09-26 | 2013-01-09 | 深圳中建院建筑科技有限公司 | Pull type direct pulling device |
| CN203811466U (en) * | 2014-03-12 | 2014-09-03 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Locking device for tensile test on concrete core sample |
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| CN103868796A (en) | 2014-06-18 |
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Address after: The Huaihe River Road in Anhui province Bengbu City 233000 Longzihu District No. 771 Patentee after: WATER RESOURCES Research Institute OF ANHUI AND HUAIHE RIVER COMMISSION Country or region after: China Patentee after: Anhui Construction Engineering Quality Supervision and Inspection Station Co.,Ltd. Address before: The Huaihe River Road in Anhui province Bengbu City 233000 Longzihu District No. 771 Patentee before: WATER RESOURCES Research Institute OF ANHUI AND HUAIHE RIVER COMMISSION Country or region before: China Patentee before: ANHUI BUILDING ENGINEERING QUALITY SUPERVISION AND TESTING STATION Address after: The Huaihe River Road in Anhui province Bengbu City 233000 Longzihu District No. 771 Patentee after: WATER RESOURCES Research Institute OF ANHUI AND HUAIHE RIVER COMMISSION Country or region after: China Patentee after: ANHUI BUILDING ENGINEERING QUALITY SUPERVISION AND TESTING STATION Address before: The Huaihe River Road in Anhui province Bengbu City 233000 Longzihu District No. 771 Patentee before: WATER RESOURCES Research Institute OF ANHUI AND HUAIHE RIVER COMMISSION Country or region before: China Patentee before: ANHUI CONSTRUCTION ENGINEERING QUALITY SUPERVISION STATION |
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Effective date of registration: 20240919 Address after: 233700 Sports East Lane, Chengguan Town, Guzhen County, Bengbu City, Anhui Province Patentee after: Guzhen County Yonggu Construction Engineering Quality Testing Co.,Ltd. Country or region after: China Address before: The Huaihe River Road in Anhui province Bengbu City 233000 Longzihu District No. 771 Patentee before: WATER RESOURCES Research Institute OF ANHUI AND HUAIHE RIVER COMMISSION Country or region before: China Patentee before: Anhui Construction Engineering Quality Supervision and Inspection Station Co.,Ltd. |