CN110261403B - Device and method for detecting grouting fullness of sleeve in grouting construction stage - Google Patents
Device and method for detecting grouting fullness of sleeve in grouting construction stage Download PDFInfo
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- CN110261403B CN110261403B CN201910372961.8A CN201910372961A CN110261403B CN 110261403 B CN110261403 B CN 110261403B CN 201910372961 A CN201910372961 A CN 201910372961A CN 110261403 B CN110261403 B CN 110261403B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
- G01N21/909—Investigating the presence of flaws or contamination in a container or its contents in opaque containers or opaque container parts, e.g. cans, tins, caps, labels
Abstract
The invention discloses a device for detecting the grouting fullness of a sleeve in a grouting construction stage, which comprises a perforation rubber plug, a transparent plastic pipe, a movable rubber plug and a push-pull rod, wherein the perforation rubber plug is sleeved on the surface of the transparent plastic pipe; the movable rubber plug is arranged in the transparent plastic pipe and is connected with one end of the push-pull rod to form a push-pull plug, the other end of the push-pull rod penetrates through the transparent plastic pipe to the outside, and the push-pull rod is also provided with a stopping part which is matched with the end part of the display section of the transparent plastic pipe for limiting; the detection method is characterized in that the detection device is directly used for plugging during grouting, then the position of the transparent plastic pipe in the sleeve is adjusted, the push-pull plug is pulled out to the development section during detection, and the result is judged by observing the slurry filling degree of the development section. The invention has simple structure and convenient operation, and is beneficial to the quality control in the sleeve grouting construction process.
Description
Technical Field
The invention relates to the technical field of assembly type buildings, in particular to a device and a method for detecting the grouting fullness of a sleeve in a grouting construction stage.
Background
The grouting sleeve connection is one of the main connection modes of the steel bars in the existing prefabricated concrete structure, the technology realizes the steel bar connection through the special grouting sleeve and the high-strength non-shrinkage grouting material, and has the advantages of quick construction, simple stress, small additional stress, wide application range, easy absorption of construction errors and the like. Because the number of joints on the same section of the component is 100% in the connection mode, and the joints are generally positioned at important stress positions of the component, the connection quality is critical, and if the grouting inside the grouting sleeve is not full, the connection of the steel bars cannot reach the designed expected performance, serious potential safety hazards can be brought.
In the construction process, the conditions of slurry leakage, less grouting and blockage in the grouting sleeve occur occasionally, and the engineering problem that the connection quality of the grouting sleeve does not meet the requirement is also reported. At present, the existing sleeve grouting fullness (or fullness) detection method mainly comprises an embedded sensor method, an embedded steel wire drawing method, an X-ray method, an endoscope method, a capillary water injection method, a unilateral ultrasonic method along a grout outlet channel and an impact demolding method along the grout outlet channel. However, in the method, except for the pre-buried sensor method, grouting fullness detection can be performed in the grouting construction stage, other methods are developed aiming at the quality acceptance stage, relevant detection can be performed only after the grouting material is solidified and hardened, and grouting supplement is difficult to perform even if the detection result is not ideal. In addition, although the pre-buried sensor method can be applicable to the grout construction stage, whether the sensor after detecting recycles and makes people tangle, if not recycle, the sensor cost is too high, if recycle, must open the grout outlet and change traditional rubber buffer, in the shutoff stopper change-over process, take out along with the sensor from the grout outlet pore, can lead to the grout outlet to leak, this is contrary with the original intention of construction control certainly.
Therefore, it is necessary to develop a device and a method for detecting the grouting fullness of a sleeve in the grouting construction stage to achieve quality control in the grouting construction process of the sleeve.
Disclosure of Invention
The invention aims to provide a device and a method for detecting the grouting fullness of a sleeve in a grouting construction stage, which have the advantages of simple structure and convenience in operation and are beneficial to quality control in the grouting construction process of the sleeve.
In order to solve the technical problems, the invention provides a device for detecting the grouting fullness of a sleeve in a grouting construction stage, which comprises a perforation rubber plug, a transparent plastic pipe, a movable rubber plug and a push-pull rod, wherein the perforation rubber plug is sleeved on the surface of the transparent plastic pipe, one side of the transparent plastic pipe, which is positioned at the small end of the perforation rubber plug, is provided with an extending section, and one side of the transparent plastic pipe, which is positioned at the large end of the perforation rubber plug, is provided with a display section; the movable rubber plug is arranged in the transparent plastic pipe and is connected with one end of the push-pull rod to form a push-pull plug, the other end of the push-pull rod penetrates through the transparent plastic pipe to the outside, and a stopping part matched with the end part of the display section of the transparent plastic pipe for limiting is further arranged on the push-pull rod.
Further, the inner diameter of the transparent plastic pipe is not less than 4 mm.
Further, transparent plastic pipe is located and is provided with touching portion on stretching into the tip of section, the length of touching portion is 3-6mm, and when backstop portion contradicts transparent plastic pipe's video picture section tip, activity rubber buffer tip flushes with the section tip that stretches into of transparent plastic pipe.
Further, the length of the imaging section is larger than the axial length of the movable rubber plug.
A method for detecting the grouting fullness of a sleeve in a grouting construction stage comprises any one of the detection devices, and comprises the following steps:
step 1) inserting the push-pull plug into the transparent plastic tube, enabling the stopping part to touch the end part of the imaging section of the transparent plastic tube, and then sleeving the perforated rubber plug on the transparent plastic tube to form a combined plug;
step 2) grouting construction is carried out on the sleeve in the prefabricated part, and after slurry flows out of a slurry outlet channel, a combined plug is plugged into the slurry outlet channel from a slurry outlet on the surface of the prefabricated part for plugging;
step 3) adjusting the position of the end part of the extending section of the transparent plastic pipe in the sleeve;
step 4), waiting after the grouting construction of the current prefabricated part is finished, and detecting within 5-10 minutes after finishing;
step 5) when in detection, the push-pull plug is pulled out to the development section, so that the space in the development section is communicated with the space in the extension section;
step 6) observing whether slurry exists in the developing section;
when no slurry or a small amount of slurry exists in the display section, judging that the sleeve is not fully filled;
when the full slurry exists in the display section, judging that the sleeve is fully filled;
step 7), resetting the push-pull plug after the judgment is finished;
when judging that the sleeve is not fully filled, performing slurry filling, pulling out the combined plug, and continuously executing the operation of the step 2);
when the sleeve is judged to be full, the transparent plastic pipe is firstly pulled out outwards, the end part of the stretching section of the transparent plastic pipe is positioned in the grout outlet hole, and then the transparent plastic pipe and the push-pull rod which protrude out of the large end of the perforation rubber plug are removed, so that the detection is completed.
Further, in step 3, when the transparent plastic pipe has a touch portion, the transparent plastic pipe is pushed into the sleeve and the touch portion is abutted against the inner wall of the sleeve opposite to the grout outlet of the sleeve or the surface of the connecting steel bar in the sleeve.
Further, in step 3, when the transparent plastic pipe does not have a touch part, the transparent plastic pipe is pushed into the sleeve, the end part of the extending section abuts against the inner wall of the sleeve opposite to the slurry outlet of the sleeve or the surface of the connecting steel bar in the sleeve, and then the transparent plastic pipe is reversely pulled out, wherein the pulling distance is 3-6 mm.
Further, in step 7, the distance that the transparent plastic pipe is pulled out is not less than the inner diameter of the sleeve or the distance between the connecting steel bar and the inner wall of the sleeve.
The invention has the beneficial effects that:
1. through the cooperation of perforation rubber buffer, transparent plastic pipe and push-and-pull stopper, can effectual shutoff grout material, can directly detect whether full to the grout material of sleeve inner chamber again to can send back the sleeve inner chamber again to the grout material that is used for observing the judgement after detecting.
2. The detection device is made of rubber and plastic, and is simple in structure, low in cost and easy to popularize and use.
3. When the detection method is used, the simple push-pull working procedures are adopted, the operation is very simple and convenient, the professional threshold is reduced, and the quality control in the sleeve grouting construction process is facilitated.
Drawings
FIG. 1 is a schematic structural diagram of a device for detecting the filling degree of grout according to the present invention;
FIG. 2 is a schematic view of the test device of the present invention inserted into a closure;
FIG. 3 is a schematic diagram of the invention after the transparent plastic pipe is adjusted under the full grouting condition;
FIG. 4 is a schematic view of the present invention in a sluicing condition;
FIG. 5 is a schematic diagram of the detection of the present invention under a full grouting condition;
FIG. 6 is a schematic diagram of the detection under the slurry leakage condition of the present invention;
FIG. 7 is a schematic diagram of the present invention after completion of the detection under full grouting conditions;
FIG. 8 is a schematic view of the detection apparatus of the present invention in use with a semi-grouted casing;
FIG. 9 is a schematic diagram of the non-touch detection device of the present invention after adjustment for inspection.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1 and 2, an embodiment of the device for detecting the grouting fullness of a sleeve in the grouting construction stage of the present invention includes a perforated rubber stopper 1, a transparent plastic tube 2, a movable rubber stopper 3, and a push-pull rod 4, wherein the perforated rubber stopper is sleeved on the surface of the transparent plastic tube, one side of the transparent plastic tube located at the small end of the perforated rubber stopper is provided with an extending section 5, and one side of the transparent plastic tube located at the large end of the perforated rubber stopper is provided with a display section 6; the movable rubber plug is arranged in the transparent plastic pipe and is connected with one end of the push-pull rod to form a push-pull plug 9, the other end of the push-pull rod penetrates through the transparent plastic pipe to the outside, and a stopping part 7 which is matched with the end part of the display section of the transparent plastic pipe for limiting is further arranged on the push-pull rod. The device is prepared from rubber and plastics, has a simple structure and low cost, and can be well popularized and applied.
When the device is used, the push-pull plug is inserted into the transparent plastic pipe, the perforated rubber plug is sleeved on the transparent plastic pipe, grouting construction is carried out on the sleeve in the prefabricated part, and after grouting materials uniformly flow out from the grout outlet hole, the device is used for plugging. The transparent plastic pipe position of adjustment afterwards and can be through pull push-and-pull stopper, push-and-pull stopper remove can with the grout material in the sleeve from stretching into the section and taking out to the display section in, because the display section is located the prefabricated component outside, consequently the condition in the display section of judgement that can be audio-visual. When the grouting material is in the development section, the grouting material represents that the sleeve is full and qualified; when the grouting material is not in the development section, the problem of slurry leakage exists. The device is simple to use, and the result is reliable, and one inserts, one draws and can judge to be in grouting construction stage operation detection, construction side or supervision side can detect by oneself, can stop "grout and irritate not full" problem better, and when the grout leakage problem appears, can in time mend thick liquid in grouting construction stage.
The push-pull plug can extract grouting material and can push the grouting material to return into the sleeve, so that the detection purpose is achieved, the stock of the grouting material in the sleeve is not influenced, and the grouting material is prevented from being lost due to detection, and insufficient grouting is avoided.
The inner diameter of the transparent plastic pipe is not less than 4 mm, so that the problem of pipe blockage in the transparent plastic pipe caused by coarse sand contained in the grouting material can be avoided.
And be provided with touching portion 8 on the tip that transparent plastic tubing is located to stretch into the section, the length of touching portion is 3-6mm for transparent plastic tubing when using, its tip that stretches into the section can not blockked up by the splice bar in the sleeve or sleeve inner wall, through touching portion butt, can guarantee to stretch into and have the passageway clearance between the tip of section and the conflict portion, makes the grout material can flow and pass through. The touch part can be obtained by cutting off the end part of the transparent plastic pipe extending-in section, and can also be formed by one-time die sinking.
Because grouting material mobility is stronger, in order to avoid influencing the testing result, when backstop portion contradicts the video picture section tip of transparent plastic pipe, the section tip that stretches into of activity rubber buffer tip and transparent plastic pipe flushes, when using, in the grouting material can not get into transparent plastic pipe in advance, consequently can avoid getting into in advance grouting material in the transparent plastic pipe when detecting by the pull to the video picture section and the erroneous judgement problem that causes. Of course, the length of the imaging section is larger than the axial length of the movable rubber plug, so that the imaging section has a visual length enough for visual judgment, and whether grouting materials exist or not can be well observed.
The method is used for detecting the sleeve grouting fullness in the grouting construction stage, and the sleeve grouting fullness of the steel bar sleeve grouting connection node in the fabricated concrete structure is detected. Referring to fig. 2, the steel bar sleeve grouting connection node comprises a prefabricated part, a sleeve 10 in the prefabricated part and a connection steel bar 11 matched with the sleeve, grouting material 12 is adopted during grouting, and the concrete detection method comprises the following steps:
assembling a detection device, inserting the push-pull plug into the transparent plastic pipe, enabling the stopping part to touch the end part of the display section of the transparent plastic pipe, and then sleeving the perforated rubber plug on the transparent plastic pipe to form a combined plug;
selecting installation time, grouting a sleeve in the prefabricated part, and plugging a combined plug into a grout outlet channel from a grout outlet on the surface of the prefabricated part for plugging after grout uniformly flows out from the grout outlet channel, wherein the plugging is shown in figure 2;
referring to fig. 3, position adjustment is carried out, after plugging, the position of the end part of the extending section of the transparent plastic pipe, which is positioned in the sleeve, is adjusted, so that the position of the end part of the extending section is positioned in the sleeve, and the detection device is not influenced to suck grouting material; whether the position of the end part of the stretching-in section is properly adjusted is one of keys for ensuring the correctness of the detection result, when slurry leakage occurs, the slurry surface in the sleeve can show the slurry leakage condition, the residual slurry exists in the slurry outlet channel, and the detection result can be influenced if the end part of the stretching-in section is only positioned in the slurry outlet channel; the transparent plastic pipe in fig. 3 has a touch part, and the sleeve in the prefabricated part is a fully grouted sleeve, and the transparent plastic pipe is adjusted by pushing the transparent plastic pipe into the fully grouted sleeve and making the touch part abut against the surface of the connecting steel bar in the sleeve.
Waiting for backflow of grouting material, waiting after the grouting construction of the current prefabricated part is finished, and detecting within 5-10 minutes after finishing; the waiting time can basically meet the backflow of the grouting material when slurry leakage occurs, the premature detection is avoided when the backflow of the grouting material is not finished, and the accuracy of the detection result is improved; two conditions are mainly adopted, one is full grouting and no slurry leakage occurs, as shown in figure 3, and the other is insufficient grouting or slurry leakage occurs, the height of the grouting material in the sleeve is lower than the height of the bottom of the slurry outlet channel, as shown in figure 4;
when in detection, the push-pull plug is pulled out to the development section to ensure that the space in the development section is communicated with the space in the stretching-in section, and the grouting material can be pumped into the development section by utilizing the fact that the air pressure in the sleeve is greater than the air pressure in the transparent plastic pipe while the push-pull plug is pulled out;
judging whether the grouting in the sleeve is full or not by observing the existence condition of the slurry in the development section; when the full slurry exists in the display section, judging that the sleeve is fully filled, and referring to fig. 5; when no slurry or a small amount of slurry exists in the developing section, judging that the grouting of the cylinder is not full, and referring to fig. 6;
after the judgment result is obtained, the operation of pertinence can be carried out:
when the grouting of the sleeve is judged to be not full, slurry is supplemented, the push-pull plug is reset firstly, then the combined plug is pulled out, the grouting operation step is continuously executed, and then the detection and judgment of the fullness of the grouting material in the sleeve are continuously carried out according to the installation step of the combined plug;
when the sleeve is judged to be full, the push-pull plug is reset, and then the transparent plastic pipe is pulled out outwards, so that the end part of the extending section of the transparent plastic pipe is positioned in the grout outlet hole, specifically, for grouting connection adopting a full grouting sleeve, the distance of the outward pulling of the transparent plastic pipe is not less than the distance between the connecting steel bar and the inner wall of the sleeve; and then, cutting off or cutting off the transparent plastic pipe and the push-pull rod which protrude out of the large end of the perforated rubber plug to finish the detection, and referring to fig. 7.
In an embodiment, referring to fig. 8, the sleeve in the prefabricated part is a half-grouting sleeve, and when the transparent plastic pipe has a touch part, the transparent plastic pipe is pushed into the half-grouting sleeve and the touch part abuts against the inner wall of the sleeve opposite to the grout outlet of the sleeve;
when the touch part is abutted against the inner wall of the sleeve opposite to the grout outlet of the sleeve and the grouting is full, the end part of the stretching-in section of the transparent plastic pipe is positioned at the position wrapped by the grouting material, so that the grouting material in the sleeve can be pumped to the imaging section during detection; after the result is judged, in order to prevent the transparent plastic pipe from being continuously remained in the sleeve so as to avoid influencing the mechanical property of grouting connection of the sleeve, the transparent plastic pipe needs to be pulled out outwards, and for the working conditions, the distance for pulling out the transparent plastic pipe outwards is not less than the inner diameter of the sleeve, so that the end part of the stretching-in section of the transparent plastic pipe is positioned in the grout outlet hole.
In an embodiment, referring to fig. 9, the sleeve in the prefabricated part is a half grouting sleeve, when the transparent plastic pipe does not have a touch part, the transparent plastic pipe is pushed into the half grouting sleeve, the end part of the stretching section abuts against the inner wall of the sleeve opposite to the grout outlet of the sleeve, and then the sleeve is reversely pulled out, wherein the pulling distance is 3-6mm, so that the end part of the stretching section of the transparent plastic pipe can be effectively ensured to be positioned in the sleeve, and the suction of grouting material by the detection device is not influenced.
The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (8)
1. The utility model provides a device that is used for grouting construction stage to detect sleeve filling fullness, its characterized in that, includes perforation rubber buffer, transparent plastic tubing, activity rubber buffer and push-and-pull rod, the perforation rubber buffer cover is established on transparent plastic tubing surface, one side that transparent plastic tubing is located perforation rubber buffer tip sets up to stretch into the section, one side that transparent plastic tubing is located perforation rubber buffer tip main aspects sets up to the video presentation section; the movable rubber plug is arranged in the transparent plastic pipe and is connected with one end of the push-pull rod to form a push-pull plug, the other end of the push-pull rod penetrates through the transparent plastic pipe to the outside, and a stopping part matched with the end part of the display section of the transparent plastic pipe for limiting is further arranged on the push-pull rod;
the position of the end part of the stretching section of the transparent plastic pipe in the sleeve is adjusted after plugging, so that the position of the end part of the stretching section is in the sleeve, and the suction of grouting material by the detection device is not influenced.
2. The apparatus for inspecting the fullness of grout in a grout sleeve during a grouting construction stage of claim 1, wherein the transparent plastic pipe has an inner diameter of not less than 4 mm.
3. The apparatus for detecting the grouting fullness of a sleeve during a grouting construction stage as claimed in claim 1, wherein the transparent plastic pipe is provided with a touch part at an end of the stretching-in section, the length of the touch part is 3-6mm, and when the stopper part collides with the end of the display section of the transparent plastic pipe, the end of the movable rubber stopper is flush with the end of the stretching-in section of the transparent plastic pipe.
4. The apparatus for detecting the grouting fullness of a sleeve during a grouting construction stage as claimed in claim 1, wherein the length of the image segment is greater than the axial length of the movable rubber plug.
5. A method for detecting the grouting fullness of a sleeve in a grouting construction stage, which comprises the detection device of any one of claims 1 to 4, and comprises the following steps:
step 1) inserting the push-pull plug into the transparent plastic tube, enabling the stopping part to touch the end part of the imaging section of the transparent plastic tube, and then sleeving the perforated rubber plug on the transparent plastic tube to form a combined plug;
step 2) grouting construction is carried out on the sleeve in the prefabricated part, and after slurry flows out of a slurry outlet channel, a combined plug is plugged into the slurry outlet channel from a slurry outlet on the surface of the prefabricated part for plugging;
step 3) adjusting the position of the end part of the extending section of the transparent plastic pipe in the sleeve;
step 4), waiting after the grouting construction of the current prefabricated part is finished, and detecting within 5-10 minutes after finishing;
step 5) when in detection, the push-pull plug is pulled out to the development section, so that the space in the development section is communicated with the space in the extension section;
step 6) observing whether slurry exists in the developing section;
when no slurry or a small amount of slurry exists in the display section, judging that the sleeve is not fully filled;
when the full slurry exists in the display section, judging that the sleeve is fully filled;
step 7), resetting the push-pull plug after the judgment is finished;
when judging that the sleeve is not fully filled, performing slurry filling, pulling out the combined plug, and continuously executing the operation of the step 2);
when the sleeve is judged to be full, the transparent plastic pipe is firstly pulled out outwards, the end part of the stretching section of the transparent plastic pipe is positioned in the grout outlet hole, and then the transparent plastic pipe and the push-pull rod which protrude out of the large end of the perforation rubber plug are removed, so that the detection is completed.
6. The method for detecting grouting fullness of a sleeve during grouting construction as claimed in claim 5, wherein in step 3, when the transparent plastic pipe has the touching part, the transparent plastic pipe is pushed into the sleeve and the touching part abuts against the inner wall of the sleeve opposite to the grout outlet of the sleeve or the surface of the connecting steel bars in the sleeve.
7. The method for detecting grouting fullness of a sleeve in a grouting construction stage as claimed in claim 5, wherein in step 3, when the transparent plastic pipe has no touching part, the transparent plastic pipe is pushed into the sleeve and the end of the extending section abuts against the inner wall of the sleeve opposite to the grout outlet of the sleeve or the surface of the connecting steel bars in the sleeve, and then is pulled out reversely, and the pulling distance is 3-6 mm.
8. The method for detecting grouting fullness of a sleeve in a grouting construction stage as claimed in claim 5, wherein in step 7, the distance that the transparent plastic pipe is pulled out is not less than the inner diameter of the sleeve or the distance between the connecting steel bars and the inner wall of the sleeve.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111122605B (en) * | 2020-02-28 | 2022-06-24 | 中建科技(济南)有限公司 | Method for detecting fullness of grouting sleeve by adopting endoscope method |
| CN112798767B (en) * | 2020-12-29 | 2023-04-25 | 宁波工程学院 | Device and method for detecting grouting fullness of assembled concrete structure |
| CN113668897B (en) * | 2021-09-26 | 2022-05-31 | 昆山市建设工程质量检测中心 | Low-pressure filling and renovating method for slurry leakage of communication cavity at bottom of prefabricated shear wall |
| CN115961785B (en) * | 2022-12-30 | 2023-09-01 | 昆山市建设工程质量检测中心 | Grouting pipe extending position adjusting method for repairing grouting sleeve |
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| CN110261403A (en) | 2019-09-20 |
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