CN104020013A - Non-penetrative concrete cylindrical core sampler and operating method thereof - Google Patents
Non-penetrative concrete cylindrical core sampler and operating method thereof Download PDFInfo
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- CN104020013A CN104020013A CN201410262686.1A CN201410262686A CN104020013A CN 104020013 A CN104020013 A CN 104020013A CN 201410262686 A CN201410262686 A CN 201410262686A CN 104020013 A CN104020013 A CN 104020013A
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Abstract
The invention discloses a non-penetrative concrete cylindrical core sampler and an operating method thereof. The sampler comprises a sampler body manufactured from stainless steel, wherein the sampler body has a circular arc structure with a central angle of less than 120 degrees; the inner side of the sampler body is a cylindrical surface; the outer side of the sampler body is a tapered surface; the upper ends of the tapered surface and the cylindrical surface are concentric circles, and the lower ends of the tapered surface and the cylindrical surface are also concentric circles. When the sampler is used, an electric drill performs perpendicular drilling in a concrete test block through cooperation with a sleeve, the sleeve is taken out to form a circular gap after drilling is stopped, the sampler body is forcibly inserted into the gap in a way that the cylindrical surface of the sampler body faces a concrete sample core to be sampled, the upper end of the sampler body is slowly knocked by a tool to slowly insert the sampler body between the concrete test block and the concrete sample core to break the bottom of the concrete sample core, the sampler body is taken down, and the concrete sample core is taken out. The sampler has the advantages of simple structure, convenience in use and high core taking efficiency.
Description
Technical field
The present invention relates to xoncrete structure experimental technique field, especially refer to a kind of non-concrete cylindrical core sampler and method of operating thereof of running through.
Background technology
In concrete structural solid Performance Detection or monitoring results process, usually need to take out the undamaged right cylinder core in complete corner, diameter, generally at 50mm, 75mm, 100mm or 150mm, wherein be take diameter 100mm, height 100mm left and right as most.And, in order to reduce the damage to concrete integral structure, mostly require non-running through to get core; But not run through, get core and just to core work, brought very large trouble, should guarantee core corner not damaged, can not destroy near concrete again, therefore when getting core, need to be very careful, this makes core work decrease in efficiency.
Be specifically designed at present and do not run through concrete cylindrical core (particularly ratio of height to diameter approaches 1, even less core) folding is got, and can guarantee that excellent device or the equipment extracting of core does not also have, now for extracting the method that does not run through concrete core sample, generally directly to use the light instruments such as round bar, awl, screwdriver to remove to prize concrete core sample, make the bottom break of right cylinder core, thereby right cylinder core is taken out.The mode that this core extracts tends to because lifting surface area is little, cause stress to concentrate the concrete that damages concrete core sample periphery, even destroy the integrality of core, and success ratio is also lower, allow to the concrete core sample core taking out, also can cause concrete core sample internal injury, affect objectivity and the accuracy of subsequent detection or monitoring.
Summary of the invention
Technical matters to be solved by this invention is the present situation for prior art, and a kind of non-concrete cylindrical core sampler that runs through simple in structure, easy to use and that nonpenerative sample core can be stood intact and takes out is provided; 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-concrete cylindrical core sampler that runs through, comprise the sampler body of being made by 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 of optimizing 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 non-method of operating that runs through concrete cylindrical core sampler, comprises the following steps:
Step 1: vertically creep on concrete test block with electric drill engage sleeves pipe, after stopping creeping into, take out the gap that sleeve pipe leaves annular;
Step 2:, towards coagulation soil sample core to be got, exerted oneself in inserted into gap in the face of cylinder of sampler body;
Step 3: the upper end of slowly knocking sampler body with instrument is inserted between concrete test block and coagulation soil sample core it at leisure, makes the bottom break of coagulation soil sample core;
Step 4: take off after sampler body, coagulation soil sample core is taken out.
Above-mentioned instrument is iron hammer, hammer.
Above-mentioned electric drill drilling depth is 100mm to 150mm.
A kind of non-concrete cylindrical core sampler that runs through of the present invention, comprise the sampler body of being made by 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, thereby reduce stress, concentrate, while avoiding getting coagulation soil sample core, coagulation soil sample core and concrete test block are damaged; 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 is circular conical surface, and while knocking sampler body downwards, take circular conical surface and concrete test block edge is fulcrum, utilize leverage to make the bottom break of coagulation soil sample core, thereby complete sampling work.
The present invention is through trial and improvement repeatedly; make non-ly to have increased greatly concrete core sample while running through concrete core sample and cause stress diffusion with the lifting surface area of sled concrete core sampling instrument extracting; well protected 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 can well protect the periphery of concrete core sample not to be damaged.
The present invention is non-, and to run through the method for operating of concrete cylindrical core sampler simple, gets core efficiency high.
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 use constitutional diagram 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 is described in further detail the present invention.
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-concrete cylindrical core sampler that runs through, comprise the sampler body 1 of being made by stainless steel, wherein, the arc-shaped structure that sampler body 1 is less than 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 on the upper end of circular conical surface 12 and the described face of cylinder 11 is concentric structure, and the lower end on the lower end of circular conical surface 12 and the described face of cylinder 11 is 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, has increased the contact area between sampler body 1 and concrete, thereby reduce stress, concentrates, and while avoiding getting coagulation soil sample core 4, coagulation soil sample core 4 and concrete test block 2 (concrete solid structure) is damaged; 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, and stress diffusion effect is not obvious, still likely coagulation soil sample core 4 and concrete test block 2 is caused to damage; 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 be affected normally carrying out of sampling.
In concrete structural solid Performance Detection or monitoring results process, the diameter of the core of getting is 50mm, 75mm, 100mm or 150mm conventionally, wherein conventional with 100mm again.The radius of sampler of the present invention is suitable with the radius of the core that samples.
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 non-method of operating that runs through concrete cylindrical core sampler, comprises the following steps:
Step 1: vertically creep on concrete test block 2 with electric drill engage sleeves pipe, after stopping creeping into, take out the gap 3 that sleeve pipe leaves annular;
Step 2:, towards coagulation soil sample core 4 to be got, exerted oneself in inserted into gap 3 in the face of cylinder of sampler body 1 11;
Step 3: the upper end of slowly knocking sampler body 1 with instrument is inserted between concrete test block 2 and coagulation soil sample core 4 it at leisure, makes the bottom break of coagulation soil sample core 4;
Step 4: take off after sampler body 1, coagulation soil sample core 4 is taken out.
In embodiment, instrument is iron hammer, hammer.
In embodiment, electric drill drilling depth is 100mm to 150mm.Electric drill drilling depth is generally pressed ratio of height to diameter 1 and is controlled, as the diameter core that is 100mm, and the about 100mm of drilling depth, but the present invention is applicable to larger ratio of height to diameter.
Principle of work: use constitutional diagram as shown in Figure 3 and Figure 4, in Fig. 4, the direction of arrow represents the direction of power.When sampling, with instruments such as iron hammer, hammers, knock the upper end of sampler body 1 downwards, the edge of 12 pairs of concrete test blocks 2 of circular conical surface (concrete solid structure) of sampler body 1 produces pressure, take both surface of contact prizes coagulation soil sample core 4 as fulcrum simultaneously, 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, between concrete test block 2, concrete core sample 4 and sampler body 1 three, will produce extruding, concrete pellet 4 will produce displacement like this, make the bottom of concrete pellet 4 break to form breaking part L, after the bottom break of coagulation soil sample core 4, just can easily coagulation soil sample core 4 have been taken out.
By sampler of the present invention, get nonpenerative coagulation soil sample core 4, not only easy to operate, sampling efficiency is high, and 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 local extrusion stress of concrete reduces more than 3 times than existing method:
| 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 variations of being made by those of ordinary skills or remodeling can not depart from the scope of the present invention.
Claims (9)
1. the non-concrete cylindrical core sampler that runs through, comprise the sampler body (1) of being made by stainless steel, it is characterized in that: the arc-shaped structure that described sampler body (1) is less than 120 ° for central angle (α), 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 the upper end of described circular conical surface (12) and the described face of cylinder (11) is concentric structure, and the lower end of the lower end of described circular conical surface (12) and the described face of cylinder (11) is also concentric structure.
2. a kind of non-concrete cylindrical core sampler that runs through according to claim 1, is characterized in that: the number of degrees of described central angle (α) are 90 ° to 120 °.
3. a kind of non-concrete cylindrical core sampler that runs through according to claim 2, is characterized in that: the radius (R) of the described face of cylinder (11) is 50mm.
4. a kind of non-concrete cylindrical core sampler that runs through 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-concrete cylindrical core sampler that runs through 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-concrete cylindrical core sampler that runs through according to claim 5, is characterized in that: the height (H) of described sampler body (1) is 100mm.
7. an a kind of non-method of operating that runs through concrete cylindrical core sampler as claimed in claim 1, is characterized in that: comprise the following steps:
Step 1: vertically creep on concrete test block (2) with electric drill engage sleeves pipe, after stopping creeping into, take out the gap (3) that sleeve pipe leaves annular;
Step 2: the face of cylinder of sampler body (1) (11), towards coagulation soil sample core (4) to be got, are exerted oneself in inserted into gap (3);
Step 3: the upper end of slowly knocking sampler body (1) with instrument is inserted between concrete test block (2) and coagulation soil sample core (4) it at leisure, makes the bottom break of coagulation soil sample core (4);
Step 4: take off after sampler body (1), coagulation soil sample core (4) is taken out.
8. a kind of non-method of operating that runs through concrete cylindrical core sampler according to claim 7, is characterized in that: described instrument is iron hammer, hammer.
9. a kind of non-method of operating that runs 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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| 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 CN104020013B (en) | 2016-04-06 |
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| CN104020013B (en) | 2016-04-06 |
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