CN104020013B - A kind of non-through concrete cylindrical core sampler and method of operating thereof - Google Patents
A kind of non-through concrete cylindrical core sampler and method of operating thereof Download PDFInfo
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- CN104020013B CN104020013B CN201410262686.1A CN201410262686A CN104020013B CN 104020013 B CN104020013 B CN 104020013B CN 201410262686 A CN201410262686 A CN 201410262686A CN 104020013 B CN104020013 B CN 104020013B
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Abstract
The invention discloses a kind of non-through concrete cylindrical core sampler and method of operating thereof, comprise the sampler body be made up of stainless steel, wherein, sampler body is the arc-shaped structure that central angle is less than 120 °, the inner side of sampler body is a face of cylinder, the outside of this sampler body is a circular conical surface, and the upper end of circular conical surface and the upper end on the described face of cylinder are concentric structure, and the lower end of circular conical surface and the lower end on the described face of cylinder are also concentric structure.During use, vertically creep on concrete test block with electric drill engagement sleeves pipe, after stopping is crept into, take out the gap that sleeve pipe leaves annular, then by the face of cylinder of sampler body towards coagulation soil sample core to be got, firmly in inserted into gap, then it is made to insert between concrete test block and coagulation soil sample core at leisure with the upper end that instrument slowly knocks sampler body, make the bottom break of coagulation soil sample core, finally take off sampler body, coagulation soil sample core is taken out.Its advantage is: structure is simple, easy to use, and it is high to get core efficiency.
Description
Technical field
The present invention relates to xoncrete structure experimental technique field, especially a kind of non-through concrete cylindrical core sampler and method of operating thereof.
Background technology
In concrete structural solid Performance Detection or monitoring results process, usually need to take out the complete undamaged right cylinder core in corner, diameter generally at 50mm, 75mm, 100mm or 150mm, wherein with diameter 100mm, height about 100mm for majority.And, in order to reduce the damage to concrete integral structure, mostly require that non-through gets core; And non-through is got core and just brought very large trouble to core work, should ensureing core corner not damaged, can not destroy again neighbouring concrete, therefore needing to be very careful when getting core, this makes core work efficiency decline.
Be specifically designed at present and do not run through concrete cylindrical core (particularly ratio of height to diameter is close to 1, even less core) roll over and get, and can ensure that the stand intact device that extracts or equipment of core does not also have, now for extracting the method not running through concrete core sample, generally directly use the light instruments such as round bar, awl, screwdriver to go to prize concrete core sample, make the bottom break of right cylinder core, thus right cylinder core is taken out.The mode that this core extracts is often because lifting surface area is little, stress is caused to concentrate the concrete damaging concrete core sample periphery, even destroy the integrality of core, and success ratio is also lower, namely the concrete core sample core taken out is allowed to, also concrete core sample internal injury be can cause, objectivity and the accuracy of subsequent detection or monitoring affected.
Summary of the invention
Technical matters to be solved by this invention is the present situation for prior art, provides structure simple, easy to use and a kind of non-through concrete cylindrical core sampler of taking out that nonpenerative sample core can be stood intact; Its method of operating is simple, convenient, and can not damage concrete core sample periphery xoncrete structure.
The present invention solves the problems of the technologies described above adopted technical scheme:
A kind of non-through concrete cylindrical core sampler, comprise the sampler body be made up of stainless steel, wherein, sampler body is the arc-shaped structure that central angle is less than 120 °, the inner side of sampler body is a face of cylinder, the outside of this sampler body is a circular conical surface, and the upper end of circular conical surface and the upper end on the described face of cylinder are concentric structure, and the lower end of circular conical surface and the lower end on the described face of cylinder are also concentric structure.
The technical measures optimized also comprise:
The number of degrees of above-mentioned central angle are 90 ° to 120 °.
The radius on the above-mentioned face of cylinder is 50mm.
The upper surface thickness of above-mentioned sampler body is 10mm.
The lower surface thickness of above-mentioned sampler body is 2mm.
The height of above-mentioned sampler body is 100mm.
A method of operating for non-through concrete cylindrical core sampler, comprises the following steps:
Step one: vertically creep on concrete test block with electric drill engagement sleeves pipe, after stopping is crept into, takes out the gap that sleeve pipe leaves annular;
Step 2: by the face of cylinder of sampler body towards coagulation soil sample core to be got, firmly in inserted into gap;
Step 3: the upper end of slowly knocking sampler body with instrument makes it insert at leisure between concrete test block and coagulation soil sample core, makes the bottom break of coagulation soil sample core;
Step 4: after taking off sampler body, takes out coagulation soil sample core.
Above-mentioned instrument is iron hammer, hammer.
Above-mentioned electric drill drilling depth is 100mm to 150mm.
A kind of non-through concrete cylindrical core sampler of the present invention, comprise the sampler body be made up of stainless steel, wherein, sampler body is the arc-shaped structure that central angle is less than 120 °, it adopts the sampler body of arc-shaped structure, increase the contact area between sampler and concrete, thus it is concentrated to reduce stress, avoids damaging coagulation soil sample core and concrete test block when getting coagulation soil sample core; The inner side of sampler body is a face of cylinder, the outside of this sampler body is a circular conical surface, the upper end of circular conical surface and the upper end on the described face of cylinder are concentric structure, the lower end of circular conical surface and the lower end on the described face of cylinder are also concentric structure, outside in circular conical surface, when knocking sampler body downwards, with circular conical surface and concrete test block edge for fulcrum, utilize leverage to make the bottom break of coagulation soil sample core, thus complete sampling work.
The present invention is through trial repeatedly and improvement; make to increase concrete core sample greatly when extracting non-through concrete core sample and cause stress spread with the lifting surface area of sled concrete core sampling instrument; well protect the concrete integrality of concrete core sample periphery; the present invention can extract nonpenerative concrete core sample by the intact of high success rate from concrete test block, and the periphery of concrete core sample can well be protected not to be damaged.
The method of operating of non-through concrete cylindrical core sampler of the present invention is simple, and it is high to get core efficiency.
Accompanying drawing explanation
Fig. 1 is plan structure schematic diagram of the present invention;
Fig. 2 is the cut-open view of A-A in Fig. 1;
Fig. 3 is using state figure of the present invention;
Fig. 4 is the cut-open view of B-B in Fig. 3.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Be structural representation of the present invention as shown in Figures 1 to 4,
Reference numeral is wherein: central angle alpha, radius R, upper surface thickness D, lower surface thickness d, height H, breaking part L, sampler body 1, the face of cylinder 11, circular conical surface 12, concrete test block 2, gap 3, coagulation soil sample core 4.
As shown in Figures 1 to 4,
A kind of non-through concrete cylindrical core sampler, comprise the sampler body 1 be made up of stainless steel, wherein, sampler body 1 is less than the arc-shaped structure of 120 ° for central angle alpha, the inner side of sampler body 1 is a face of cylinder 11, the outside of this sampler body 1 is a circular conical surface 12, and the upper end of circular conical surface 12 and the upper end on the described face of cylinder 11 are concentric structure, and the lower end of circular conical surface 12 and the lower end on the described face of cylinder 11 are also concentric structure.
Sampler body 1 adopts 316 stainless steels to make, and has good strength and stiffness, and has very strong corrosion resistance.
Sampler body 1 adopts arc-shaped structure, increase the contact area between sampler body 1 and concrete, thus it is concentrated to reduce stress, damages when avoiding getting coagulation soil sample core 4 to coagulation soil sample core 4 and concrete test block 2 (concrete solid structure); In embodiment, the number of degrees of central angle alpha are 90 ° to 120 °.The number of degrees of central angle alpha are unsuitable too small, and the number of degrees are too small, stress spread DeGrain, still likely cause damage to coagulation soil sample core 4 and concrete test block 2; The number of degrees of central angle alpha are also unsuitable excessive, and the number of degrees are excessive, not only can increase difficulty of processing, and when sampling, the power of both sides can be cancelled out each other and affect normally carrying out of sampling.
In concrete structural solid Performance Detection or monitoring results process, usually get core diameter be 50mm, 75mm, 100mm or 150mm, wherein conventional with 100mm again.The radius of sampler of the present invention with to sample the radius of core suitable.
In embodiment, the radius R on the face of cylinder 11 is 50mm.
In embodiment, the upper surface thickness D of sampler body 1 is 10mm.
In embodiment, the lower surface thickness d of sampler body 1 is 2mm.
In embodiment, the height H of sampler body 1 is 100mm.
A method of operating for non-through concrete cylindrical core sampler, comprises the following steps:
Step one: vertically creep on concrete test block 2 with electric drill engagement sleeves pipe, after stopping is crept into, takes out the gap 3 that sleeve pipe leaves annular;
Step 2: by the face of cylinder 11 of sampler body 1 towards coagulation soil sample core 4 to be got, firmly in inserted into gap 3;
Step 3: the upper end of slowly knocking sampler body 1 with instrument makes it insert at leisure between concrete test block 2 and coagulation soil sample core 4, makes the bottom break of coagulation soil sample core 4;
Step 4: after taking off sampler body 1, takes out coagulation soil sample core 4.
In embodiment, instrument is iron hammer, hammer.
In embodiment, electric drill drilling depth is 100mm to 150mm.Electric drill drilling depth generally controls by ratio of height to diameter 1, and if diameter is the core of 100mm, drilling depth is about 100mm, but the present invention is applicable to larger ratio of height to diameter.
Principle of work: using state figure as shown in Figure 3 and Figure 4, in Fig. 4, the direction of arrow represents the direction of power.When sampling, the upper end of sampler body 1 is knocked downwards with the instrument such as iron hammer, hammer, the edge of circular conical surface 12 pairs of concrete test blocks 2 (concrete solid structure) of sampler body 1 produces pressure, simultaneously with both surface of contact for fulcrum prizes coagulation soil sample core 4, stress distribution (direction of arrow represents the direction of power, and arrow length represents the size of power) as shown in arrow is formed at the top of coagulation soil sample core 4; Along with sampler body 1 constantly gos deep into, extruding will be produced between concrete test block 2, concrete core sample 4 and sampler body 1 three, such concrete pellet 4 will produce displacement, the bottom of concrete pellet 4 is made to break to form breaking part L, after the bottom break of coagulation soil sample core 4, just can easily coagulation soil sample core 4 be taken out.
Get nonpenerative coagulation soil sample core 4 by sampler of the present invention, not only easy to operate, sampling efficiency is high, and all can not cause damage to concrete test block 2 and coagulation soil sample core 4.
Finite element simulation calculation result shows, sampler sampling of the present invention makes, and the existing method of concrete local compression stress ratio reduces by more than 3 times:
| Sampling instrument | Screwdriver | This sampler (90 °, central angle) | This sampler (120 °, central angle) |
| Concrete test block (entity structure) maximum weighted/MPa | 4.25 | 2.57 | 1.93 |
| Coagulation soil sample core maximum weighted/MPa | 4.25 | 1.58 | 1.05 |
Most preferred embodiment of the present invention is illustrated, and the various change made by those of ordinary skill in the art or remodeling all can not depart from the scope of the present invention.
Claims (9)
1. a non-through concrete cylindrical core sampler, comprise the sampler body (1) be made up of stainless steel, it is characterized in that: the arc-shaped structure that described sampler body (1) is less than 120 ° for central angle alpha, the inner side of described sampler body (1) is a face of cylinder (11), the outside of this sampler body (1) is a circular conical surface (12), the upper end of described circular conical surface (12) and the upper end of the described face of cylinder (11) are concentric structure, the lower end of described circular conical surface (12) and the lower end of the described face of cylinder (11) are also concentric structure.
2. a kind of non-through concrete cylindrical core sampler according to claim 1, is characterized in that: the number of degrees of described central angle alpha are 90 ° to 120 °.
3. a kind of non-through concrete cylindrical core sampler according to claim 2, is characterized in that: the radius R on the described face of cylinder (11) is 50mm.
4. a kind of non-through concrete cylindrical core sampler according to claim 3, is characterized in that: the upper surface thickness D of described sampler body (1) is 10mm.
5. a kind of non-through concrete cylindrical core sampler according to claim 4, is characterized in that: the lower surface thickness d of described sampler body (1) is 2mm.
6. a kind of non-through concrete cylindrical core sampler according to claim 5, is characterized in that: the height H of described sampler body (1) is 100mm.
7. a method of operating for a kind of non-through concrete cylindrical core sampler as claimed in claim 1, is characterized in that: comprise the following steps:
Step one: vertically creep on concrete test block (2) with electric drill engagement sleeves pipe, after stopping is crept into, takes out the gap (3) that sleeve pipe leaves annular;
Step 2: by the face of cylinder (11) of sampler body (1) towards coagulation soil sample core (4) to be got, firmly in inserted into gap (3);
Step 3: the upper end of slowly knocking sampler body (1) with instrument makes it insert at leisure between concrete test block (2) and coagulation soil sample core (4), makes the bottom break of coagulation soil sample core (4);
Step 4: after taking off sampler body (1), takes out coagulation soil sample core (4).
8. the method for operating of a kind of non-through concrete cylindrical core sampler according to claim 7, is characterized in that: described instrument is iron hammer, hammer.
9. the method for operating of a kind of non-through concrete cylindrical core sampler according to claim 8, is characterized in that: described electric drill drilling depth is 100mm to 150mm.
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| CN201410262686.1A CN104020013B (en) | 2014-06-13 | 2014-06-13 | A kind of non-through concrete cylindrical core sampler and method of operating thereof |
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| CN104020013B true CN104020013B (en) | 2016-04-06 |
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| JP2660660B2 (en) * | 1994-05-23 | 1997-10-08 | オリエンタル建設株式会社 | Sleeve of anchor for prestressed concrete and method of manufacturing sleeve |
| CN2411341Y (en) * | 1998-03-29 | 2000-12-20 | 苏承东 | Multiway splitting wedge for rock |
| JP2001121528A (en) * | 1999-10-29 | 2001-05-08 | Mitsubishi Materials Corp | Method for making hole |
| JP4142877B2 (en) * | 2002-02-12 | 2008-09-03 | 株式会社ミスミ特殊 | Core removal tool |
| CN201258689Y (en) * | 2008-10-09 | 2009-06-17 | 兰桥昌 | Single tube coring bit |
| CN202088315U (en) * | 2011-06-13 | 2011-12-28 | 上海沃门实业有限公司 | Wedge block group of hydraulic rock and concrete splitter |
| JP2013059988A (en) * | 2011-09-15 | 2013-04-04 | Hitachi Koki Co Ltd | Core bit set for power tool |
| CN202305261U (en) * | 2011-09-16 | 2012-07-04 | 长安大学 | Concrete easily obtained core sample drilling and taking machine |
| CN202595721U (en) * | 2012-06-08 | 2012-12-12 | 深圳市勘察测绘院有限公司 | Punched and bored pile sampler |
| CN102706732B (en) * | 2012-06-08 | 2015-07-15 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Device for sticking and straightening drawing head by adopting drilling and pulling method |
| CN202676495U (en) * | 2012-06-30 | 2013-01-16 | 韩锋 | Multi-angle concrete coring device |
| CN203114219U (en) * | 2013-02-27 | 2013-08-07 | 浙江土工仪器制造有限公司 | Drilling coring device |
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