CN108007764B - Non-excavation detection device and method for strength of buried concrete member - Google Patents
Non-excavation detection device and method for strength of buried concrete member Download PDFInfo
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- CN108007764B CN108007764B CN201711471443.9A CN201711471443A CN108007764B CN 108007764 B CN108007764 B CN 108007764B CN 201711471443 A CN201711471443 A CN 201711471443A CN 108007764 B CN108007764 B CN 108007764B
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- concrete member
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- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 238000009412 basement excavation Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002689 soil Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/52—Investigating hardness or rebound hardness by measuring extent of rebound of a striking body
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to a non-excavation detection device for the strength of a buried concrete member, which comprises a supporting rod, a spring, a supporting rod sleeve, a rebound instrument and a clamp, wherein the supporting rod is arranged on the lower surface of the supporting rod; the support rod sleeve is sleeved outside the support rod, the support rod sleeve is transversely and fixedly connected with the rebound instrument through the clamp, and the rebound instrument is arranged in parallel with the support rod sleeve; the spring is sleeved outside the supporting rod and positioned below the clamp; the support rod sleeve can drive the resiliometer to rotate around the rod, and the rotating radius is smaller than the radius of the test hole from the ground to the concrete member. In the implementation process, the buried concrete member is not required to be fully excavated, and only the soil body of the detection part is required to be locally perforated to the surface of the concrete member, so that the detection is simple, and a large amount of manpower and financial resources are saved. Meanwhile, the method is also beneficial to the protection of ecological environment. After one-time detection, the formed test hole is generally free from backfilling, and can be repeatedly used for many times only by adding a pipe cap on the sleeve, so that the concrete strength detection is convenient to be carried out regularly.
Description
Technical Field
The invention relates to the field of urban infrastructure construction, in particular to a non-excavation detection device and method for strength of a buried concrete member.
Background
The buried concrete structure mainly comprises an underground box culvert, an underground reservoir and the like. These concrete structures are subjected to severe environments of various physical, chemical and biological corrosion sources for a long time, and the concrete is susceptible to gradual weathering attack, thereby reducing the strength of the concrete, so that it is necessary to periodically detect the strength of the buried concrete structure.
At present, when the strength of a buried concrete member is detected, the common practice is to excavate the upper part of a slab in a large area by earthing, and the strength detection work is carried out on the surface of the large-area exposed concrete slab by detection personnel. Backfill is needed after the test, which is time-consuming, laborious and costly, and can damage urban environment to a certain extent.
Disclosure of Invention
The invention aims to provide a device and a method for carrying out non-excavation detection on the strength of a buried concrete member, so that the detection purpose is achieved, the labor intensity of strength detection work is reduced, and the damage to the ecological environment during detection is reduced.
The invention adopts the following technical scheme:
a non-excavation detection device for the strength of a buried concrete member comprises a support rod 10, a spring 11, a support rod sleeve 7, a resiliometer 1 and a clamp 2; the support rod sleeve 7 is sleeved outside the support rod 10, the support rod sleeve 7 is transversely and fixedly connected with the resiliometer 1 through the clamp 2, and the resiliometer 1 is arranged in parallel with the support rod sleeve 7; the spring 11 is sleeved outside the supporting rod 10 and is positioned below the clamp 2; the support rod sleeve 7 can drive the resiliometer 1 to rotate around the rod, and the rotation radius is smaller than the radius of a test hole from the ground to the concrete member.
Further, a foot stand 9 is also included, which is fixed outside the support rod sleeve 7 and supported on a horizontal ground.
Further, a handle 8 is fixedly arranged outside the support rod sleeve 7.
Further, the device also comprises a guide sleeve 5, wherein the guide sleeve 5 is fixed outside the support rod sleeve 7, the resiliometer 1 is positioned inside the support rod sleeve, and the outer diameter of the guide sleeve 5 is equal to or slightly smaller than the aperture from the ground to the surface of the buried concrete layer.
Furthermore, the outer part of the supporting rod sleeve 7 is also sleeved with a dial 6, the outer diameter of the dial 6 is larger than that of the guide sleeve 5, and the upper end of an opening from the ground to the surface of the buried concrete layer can be covered.
Further, a water stop device 12 is arranged at the bottom of the guide sleeve 5.
Further, the clamp 2 is connected with the supporting rod sleeve 7 through the nut 3 and the pair of screws 4, and the radius of the rebound apparatus 1 rotating around the rod can be adjusted by rotating the nut 3.
A method for using the non-excavation detection device for the strength of the buried concrete member, the method comprises the following steps:
s1, forming a round hole on the ground until reaching the upper surface of a buried concrete member;
s2, inserting the buried concrete member strength non-excavation detection device into the round hole;
s3, pressing the handle 8 downwards against the elasticity of the spring 11, and detecting the strength of the resiliometer 1;
s4, measuring a plurality of measuring points by changing the distance between the clamp 2 and the support rod 10 through rotating the nut 3.
Further, in step S4, the number of the measuring points is at least 16.
Further, in step S4, the rebound apparatus 1 has a function unit for storing detection data or a function unit for transmitting detection data.
The invention has the beneficial effects are that:
1) The buried concrete member strength non-excavation detection device only needs to partially hole a soil body in the implementation process, is simple to detect, does not need large-area excavation, can avoid detection risks and reduce engineering cost, and has small influence on ecological environment;
2) The detection holes can be reserved and used repeatedly for many times, the original appearance is restored without earthing, the long-time periodic detection is facilitated, and the detection workload is further reduced;
drawings
Fig. 1 is a front view of a strength trenchless inspection apparatus for a buried concrete member of the present invention.
Fig. 2 is a schematic view of the device for detecting the strength of the buried concrete member without excavation.
FIG. 3 is a schematic view of a resiliometer connected with a support rod sleeve through a screw and a nut, wherein the distance between the resiliometer and the support rod sleeve can be adjusted by rotating the nut, and then the radius of the resiliometer rotating around the rod is adjusted.
In the figure, 1, a resiliometer, 2, a clamp, 3, a nut, 4, a screw, 5, a guide sleeve, 6, a dial, 7, a support rod sleeve, 8, a handle, 9, a foot rest, 10, a support rod, 11, a spring, 12, a water stopping device, 13, a soil layer and 14, and a buried concrete member.
Detailed Description
The invention will be further described with reference to the drawings and specific examples.
Referring to fig. 1-3, a non-excavation detection device for the strength of a buried concrete member comprises a supporting rod 10, a spring 11, a supporting rod sleeve 7, a rebound instrument 1 and a clamp 2; the support rod sleeve 7 is sleeved outside the support rod 10, the support rod sleeve 7 is transversely and fixedly connected with the resiliometer 1 through the clamp 2, and the resiliometer 1 is arranged in parallel with the support rod sleeve 7; the spring 11 is sleeved outside the supporting rod 10 and is positioned below the clamp 2; the supporting rod sleeve 7 can drive the resiliometer 1 to rotate around the rod, and the rotating radius is smaller than the aperture of a round hole from the ground to the concrete member.
Referring to fig. 1-2, a foot rest 9 is also included, which is secured to the exterior of the support rod sleeve 7 and is supported on a level ground surface.
Referring to fig. 1-2, a handle 8 is also fixedly arranged on the outer part of the support rod sleeve 7.
Referring to fig. 2, the device further comprises a guide sleeve 5, wherein the guide sleeve 5 is fixed outside the support rod sleeve 7, the resiliometer 1 is positioned inside the guide sleeve 5, and the outer diameter of the guide sleeve 5 is equal to or slightly smaller than the aperture of the opening from the ground to the surface of the buried concrete layer.
Referring to fig. 2, the outer part of the supporting rod sleeve 7 is also sleeved with a dial 6, the outer diameter of the dial 6 is larger than that of the guide sleeve 5, and the upper end of the opening from the ground to the surface of the buried concrete layer can be covered.
Referring to fig. 2, a water stop device 12 is arranged at the bottom of the guide sleeve 5.
Referring to fig. 3, the clamp 2 is connected with the supporting rod sleeve 7 through the nut 3 and the pair of screws 4, and the radius of the rebound apparatus 1 rotating around the rod can be adjusted by rotating the nut 3.
The resiliometer 1 is a digital display integrated resiliometer.
In specific implementation, the method comprises the following steps:
step 1: drilling or drawing a small hole on the ground by adopting a micro drilling machine or a Luoyang shovel;
step 2: a guide sleeve 5 is inserted into the small hole, and a water stop device 12 is arranged at the bottom of the sleeve and is tightly contacted with the surface of the concrete member;
step 3: removing excessive soil and water in the sleeve, and keeping the surface of the concrete member smooth and dry;
step 4: the digital display integrated resiliometer 1 is fixed on the control device, minimizes the distance between the digital display integrated resiliometer 1 and the control device, and then stretches to the bottom of the guide sleeve 5, so that the support rod 10 is placed on the concrete member and is positioned on the center of the circle of the sleeve 5;
step 5: the handle 8 is controlled to rotate the support rod sleeve 7 to make 8 rebounds at equal angles;
step 6: the whole measuring instrument is pulled out from the hole, the distance between the digital display integrated resiliometer 1 and the control device is adjusted to be the largest, then the measuring instrument stretches into the hole again, and 8 rebounds are continuously punched according to the step 5;
step 7: the concrete strength of the concrete area was calculated according to the specifications from the 16 rebound values measured.
In the implementation process, the buried concrete member is not required to be fully excavated, only the soil body is required to be partially perforated, the detection is simple, and a large amount of manpower and financial resources are saved. Meanwhile, the method is also beneficial to the protection of ecological environment. After one-time detection, the formed detection hole is generally free from backfilling, and can be repeatedly used for many times only by adding a pipe cap on the sleeve, so that the concrete strength detection is convenient to be carried out regularly.
The foregoing is a preferred embodiment of the present invention, and various changes and modifications may be made therein by those skilled in the art without departing from the general inventive concept, and such changes and modifications should be considered as falling within the scope of the claimed invention.
Claims (10)
1. Non-excavation detection device of buried concrete member intensity down, its characterized in that:
comprises a supporting rod (10), a spring (11), a supporting rod sleeve (7), a resiliometer (1) and a clamp (2);
the supporting rod sleeve (7) is sleeved outside the supporting rod (10), the supporting rod sleeve (7) is transversely and fixedly connected with the resiliometer (1) through the clamp (2), and the resiliometer (1) is arranged in parallel with the supporting rod sleeve (7); the spring (11) is sleeved outside the supporting rod (10) and is positioned below the clamp (2);
the supporting rod sleeve (7) can drive the resiliometer (1) to rotate around the rod, and the rotating radius is smaller than the aperture of a detection hole from the ground to the concrete member.
2. The underlaid concrete member strength trenchless detection apparatus of claim 1, wherein: the device also comprises a foot rest (9) which is fixed outside the supporting rod sleeve (7) and is supported on the horizontal ground.
3. The underlaid concrete member strength trenchless detection apparatus of claim 1, wherein: the outside of the supporting rod sleeve (7) is fixedly provided with a handle (8).
4. A buried concrete member strength trenchless testing apparatus as defined in claim 3 wherein: the rebound device is characterized by further comprising a guide sleeve (5), wherein the guide sleeve (5) is fixed outside the support rod sleeve (7), the rebound device (1) is positioned inside the support rod sleeve, and the outer diameter of the guide sleeve (5) is equal to or slightly smaller than the aperture of the opening of the surface of the ground to the surface of the buried concrete layer.
5. The underlaid concrete member strength trenchless detection apparatus of claim 4, wherein: the outside of the supporting rod sleeve (7) is also sleeved with a dial (6), the outer diameter of the dial (6) is larger than that of the guide sleeve (5), and the upper end of an opening hole from the ground to the surface of the buried concrete layer can be covered.
6. The underlaid concrete member strength trenchless detection apparatus of claim 4, wherein: the bottom of the guide sleeve (5) is provided with a water stopping device (12).
7. The underlaid concrete member strength trenchless detection apparatus of claim 5, wherein: the clamp (2) is connected with the supporting rod sleeve (7) through the nut (3) and the pair of screws (4), and the radius of the rebound instrument (1) rotating around the rod can be adjusted by rotating the nut (3).
8. A method for inspecting a strength trenchless inspecting apparatus of a buried concrete member according to claim 7, the method is characterized by comprising the following steps of:
s1, forming a round hole on the ground until reaching the upper surface of a buried concrete member;
s2, inserting the buried concrete member strength non-excavation detection device into the round hole;
s3, the handle (8) is pressed downwards against the elasticity of the spring (11), and the resiliometer (1) detects the strength;
s4, measuring a plurality of measuring points by changing the distance between the clamp (2) and the supporting rod (10) through rotating the nut (3).
9. The method for detecting the strength of the buried concrete member by using the non-excavation detecting apparatus as claimed in claim 8, wherein: in step S4, the number of the measuring points is at least 16.
10. The method for detecting the strength of the buried concrete member by using the non-excavation detecting apparatus as claimed in claim 8, wherein: in step S4, the rebound device (1) has a functional unit for storing detection data or a functional unit for transmitting detection data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711471443.9A CN108007764B (en) | 2017-12-29 | 2017-12-29 | Non-excavation detection device and method for strength of buried concrete member |
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| CN201711471443.9A CN108007764B (en) | 2017-12-29 | 2017-12-29 | Non-excavation detection device and method for strength of buried concrete member |
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| CN108007764A CN108007764A (en) | 2018-05-08 |
| CN108007764B true CN108007764B (en) | 2023-12-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109342236B (en) * | 2018-11-30 | 2021-04-23 | 湖南长建科技有限公司 | Device and method for detecting strength of underground concrete member |
| CN110763584A (en) * | 2019-11-17 | 2020-02-07 | 汪亚平 | Road and bridge concrete structure real-time detection device |
| CN111208026B (en) * | 2020-02-27 | 2022-12-27 | 陈小平 | A resiliometer for foundation pile detects |
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