CN108663006B - A method of detecting connection reinforcing bar insertion depth in full grout sleeve splice - Google Patents
A method of detecting connection reinforcing bar insertion depth in full grout sleeve splice Download PDFInfo
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- CN108663006B CN108663006B CN201810863699.2A CN201810863699A CN108663006B CN 108663006 B CN108663006 B CN 108663006B CN 201810863699 A CN201810863699 A CN 201810863699A CN 108663006 B CN108663006 B CN 108663006B
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- sleeve
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- reinforcing bar
- bar
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/18—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring depth
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- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
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Abstract
The invention discloses a kind of methods for detecting and connecting reinforcing bar insertion depth in full grout sleeve splice, it is characterized in that, using the insertion depth for connecting reinforcing bar in the 3 D stereo measurement full grout sleeve of endoscope check, including grouting mouth end bar and grout outlet end bar, detection time should be after the completion of prefabricated components scene is spliced and before sleeve grouting construction；The endoscope probe for being equipped with forward sight 3 D stereo measurement camera lens is protruded into from the grouting mouth and grout outlet on prefabricated components surface respectively, and the 3D rendering in the middle part of sleeve inner shooting barrel bore is protruded into using the gap between the guided bend function of endoscope probe and connection reinforcing bar and sleeve lining, feature with high accuracy is manufactured using sleeve, by the relative distance of limit block card in the middle part of connection reinforcing bar inserting paragraph end in measurement 3D rendering and sleeve, connection reinforcing bar insertion depth is calculated.The present invention can it is intuitive, clear, quantitatively obtain reinforcing bar insertion depth, improve detection efficiency.
Description
Technical field
The present invention relates to prefabrication fields, and in particular to a kind of detect connects in full grout sleeve splice
The method of reinforcing bar insertion depth.
Background technique
Prefabricated assembled concrete structure has speed of application as a kind of structure type for meeting industrialized production
Fastly, labor intensity is low, noise pollution and wet construction is few and the advantages such as product quality is easy to control, it has also become domestic and international construction industry development
Main flow direction.
In assembled arthitecutral structure, especially in prefabricated concrete structure, component connection is to guarantee that structure is whole
The key node of quality.Reinforced bar sleeve grouting connection is the common reinforcing bar type of attachment in prefabricated concrete structure, is referred to
The steel reinforcement abutting joints for being inserted into reinforcing bar and cement injection base grouting material in pre-buried metal sleeve in precast concrete and realizing
Connection type.The main undertaker that connection reinforcing bar in insertion sleeve is transmitted as different prefabricated components loads, connects reinforcing bar
Anchorage length is to guarantee one of the key factor of sleeve grouting connection reliability.However, since component production or in-site installation are inclined
Difference causes grouting mouth end connection reinforcing bar can not be in place, connects reinforcing bar in the presence of grouting mouth end individually and is cut short or cut off phenomenon, reduces
The valid bonding length of reinforcing bar causes reinforced bar sleeve grouting jointing intensity not reach requirement, and there are security risks.
It can be to connect reinforcing bar insertion depth in the full grout sleeve splice of quantitative detection therefore, it is necessary to provide one kind
Method.
Summary of the invention
The technical problem to be solved in the present invention is to provide connection reinforcing bar insertions in a kind of full grout sleeve splice of detection
The method of depth, can it is intuitive, clear, quantitatively obtain reinforcing bar insertion depth, improve detection efficiency and detection stability.
In order to solve the above-mentioned technical problems, the present invention provides connect reinforcing bar in a kind of full grout sleeve splice of detection
The method of insertion depth, equipment used in the detection method are that 3 D stereo measures endoscope, the 3 D stereo measurement
Endoscope includes sequentially connected endoscope host, connection hose, probe and camera lens；
The 3 D stereo measurement endoscope-use is in the insertion depth for detecting connection reinforcing bar in full grout sleeve, the connection
Reinforcing bar includes grouting mouth end bar and grout outlet end bar, and detection time should be after the completion of prefabricated components scene be spliced and sleeve
Before grouting construction；
When the insertion depth for detecting grouting mouth end bar, by the probe of 3 D stereo measurement endoscope directly from pre-
The grout outlet of component surface processed protrudes into pulp duct, downward in the bending of the delivery position of pulp duct and sleeve, utilizes pulp
Gap between mouth end bar and sleeve lining, which continues to advance downwardly, to be protruded into, and control probe guided bend finds imaging position, and
By 3 D stereo measure endoscope in sleeve limit block card and limit block card below grouting mouth end bar carry out at
Picture, when selecting the imaging clearly of position, shooting obtains 3D rendering；
Then three points that block card upper surface is limited in image are selected, the plane definition that select three points are formed is the
One datum plane, then selects the 4th point, and the 4th point location calculates end in the end surface of grouting mouth end bar inserting paragraph
End surfaces to the first datum plane the first vertical range, by the distance and for limiting block card upper surface to grout sleeve bottom
The difference of one vertical range obtains the insertion depth of grouting mouth end bar；If the insertion depth for the mouth end bar that is in the milk is more than or equal to 8 times
Bar diameter, be determined as qualification, be otherwise determined as unqualified.
When the insertion depth for detecting grout outlet end bar, by the probe of 3 D stereo measurement endoscope directly from pre-
The grouting mouth of component surface processed protrudes into grouting duct, upward in the bending of the delivery position of grouting duct and sleeve, utilizes grouting
Gap between mouth end bar and sleeve lining continues up propulsion and protrudes into, and control probe guided bend finds imaging position, and
By 3 D stereo measure endoscope in sleeve limit block card and limit block card above grout outlet end bar carry out at
Picture, when selecting the imaging clearly of position, shooting obtains 3D rendering；
Then three points that block card lower surface is limited in image are selected, the plane definition that select three points are formed is the
Two datum planes, then select the 4th point, and the 4th point location calculates end in the end surface of grout outlet end bar inserting paragraph
End surfaces pass through the distance and the at the top of limit block card lower surface to grout sleeve to the second vertical range of the second datum plane
The difference of two vertical ranges obtains the insertion depth of grout outlet end bar.If the insertion depth of grout outlet end bar is more than or equal to 8 times
Bar diameter, be determined as qualification, be otherwise determined as unqualified.
Further, the camera lens is that forward sight 3 D stereo measures camera lens.
Further, the quantity of the limit block card taken in the 3D rendering is at least 2.
Further, when the probe is in the junction of the junction and be in the milk duct and sleeve of pulp duct and sleeve
When, it is first turned to, guides connection hose between grout outlet end bar and sleeve lining and grouting mouth end steel by turning to
It is moved in gap between muscle and sleeve lining.
Further, the maximum guided bend degree of the probe in a straightened condition is greater than 160 °.
Beneficial effects of the present invention:
1, the high feature of full grout sleeve dimensional accuracy is cleverly utilized in the present invention, is measured by endoscope three-dimensional dimension
The insertion depth of measurement connection reinforcing bar is converted limit block card in the middle part of measurement connection reinforcing bar inserting paragraph end and sleeve by technology
Relative distance, further according to limit block card position be calculated connection reinforcing bar insertion depth, thus substantially reduce measurement away from
From so that existing 3 D stereo measurement endoscope ranging range can be very good to meet engineer application, improve detection essence
Degree.
2, camera lens is measured using minor diameter endoscope probe and forward sight 3 D stereo, is bent turning function by means of probe,
Can just make to pop one's head in and be turned in pulp duct or grouting duct and the junction of sleeve, guidance connection hose connection reinforcing bar with
It is moved in gap between sleeve lining, connection reinforcing bar inserting paragraph end is accurately detected by measurement camera lens and is located at full grout sleeve
Image and measurement data at interior different location can intuitive, clear, quantitatively obtain connection reinforcing bar insertion depth, mention significantly
High detection efficiency.
Detailed description of the invention
Fig. 1 is detection grouting mouth end bar schematic diagram of the invention；
Fig. 2 is detection grout outlet end bar schematic diagram of the invention；
Fig. 3 is the shooting of operating condition one measurement view of the present invention；
Fig. 4 is the shooting of operating condition two measurement view of the present invention；
Fig. 5 is the shooting of operating condition three measurement view of the present invention；
Fig. 6 is the shooting of operating condition four measurement view of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Shown in referring to Fig.1, the method for reinforcing bar insertion depth is connected in the full grout sleeve splice of detection of the invention
One embodiment, detection device are that 3 D stereo measures endoscope, including sequentially connected endoscope host 1, connection hose 2, spy
First 3 and camera lens 4；The maximum guided bend degree of above-mentioned probe in a straightened condition is greater than 160 °, protrudes into full grouting set convenient for turning
Inside cylinder 5；Camera lens is that forward sight 3 D stereo measures camera lens；The diameter for connecting hose, probe and camera lens is 4mm.
Connecting reinforcing bar includes grouting mouth end bar and grout outlet end bar, and 3 D stereo measures endoscope-use and is in the milk in detection
The mouth insertion depth of end bar 6 and the insertion depth of grout outlet end bar 7, detection time should splice at prefabricated components scene
Before rear and sleeve grouting construction.
Grout outlet end bar is to manufacture the stage in prefabricated components, the sealing rubber ring 51 at the top of full grout sleeve
It is inserted into sleeve afterwards, insertion depth is relatively controllable, and due to the fixed function of sealing rubber ring, grout outlet end bar
Substantially it can guarantee that in sleeve, the i.e. gap of grout outlet end bar and sleeve lining is relatively fixed, is under normal conditions 7- between two parties
10mm, for endoscope probe using the gap protrude into sleeve inner shooting measurement limit block card lower part grouting mouth end bar insert
Enter depth and provides advantageous condition.It, may be due to prefabricated components production or in-site installation deviation for the mouth end bar that is in the milk
Cause reinforcing bar in place, cut short in the presence of grouting mouth end bar individually or cut off phenomenon, therefore the insertion for the mouth end bar that is in the milk
Depth must detect, and the insertion depth of grout outlet end bar can be depending on actual conditions.
The detection mode of the insertion depth of grouting mouth end bar is shown referring to Fig.1；The insertion depth of grout outlet end bar
Detection mode is referring to shown in Fig. 2.
By taking the full grout sleeve of certain brand GTZQ414 model as an example, the grouting mouth end bar and pulp that are 14mm to diameter
The insertion depth of mouth end bar is preset, and is divided into following four operating condition and is carried out detection operation:
Operating condition one: grouting mouth end bar insertion depth is 132.5mm, i.e., reinforcing bar end resists limit block card following table completely
Face.
The probe of 3 D stereo measurement endoscope is directly protruded into pulp duct 53 from the grout outlet 52 on prefabricated components surface
It is interior, the delivery position of pulp duct and sleeve bending downwards, using the gap between grout outlet end bar and sleeve lining after
It is continuous advance downwardly to extend into adjust suitably distance close to limiting block card position and rotate the direction of probe make imaging clearly, lead to
Cross 3 D stereo measurement endoscope in sleeve limit block card 54 and limit block card below grouting mouth end bar carry out at
Picture, when selecting the imaging clearly of position, shooting obtains 3D rendering.
Then three points that block card upper surface is limited in image are selected, the plane definition that select three points are formed is the
One datum plane then selects the 4th point, end surface of the 4th point location in grouting mouth end bar inserting paragraph, measurement end
First vertical range of end surfaces to the first datum plane is 5.59mm, as shown in Figure 3；The full grout sleeve of GTZQ414 model
Limiting block card thickness is 5mm, and the distance of limit block card upper surface to sleeve bottom is 137.5mm, by limiting block card upper surface
The difference of distance and the first vertical range to grout sleeve bottom obtains the insertion depth of grouting mouth end bar, and be in the milk mouth end bar
Insertion depth be 137.5-5.59=131.91mm.
Absolute error ε=| 132.5-131.91 |=0.59mm, ε=0.04d, wherein d is the diameter for connecting reinforcing bar.
Since the insertion depth 131.91mm of measured grouting mouth end bar is greater than 8d (for 112mm), operating condition one
In connection reinforcing bar insertion depth be determined as qualification.
Operating condition two: grouting mouth end bar insertion depth is 112mm
Referring to the operating procedure of operating condition one, grouting mouth end bar inserting paragraph end surface is measured to the of the first datum plane
One vertical range is 24.80mm, as shown in Figure 4；Therefore, the insertion depth of grouting mouth end bar is 137.5-24.80=
112.7mm；
Absolute error ε=| 112-112.7 |=0.7mm, ε=0.05d, wherein d is the diameter for connecting reinforcing bar.
Since the insertion depth 112.7mm of measured grouting mouth end bar is more than or equal to 8d (for 112mm), operating condition
Connection reinforcing bar insertion depth in two is determined as qualification.
Operating condition three: grouting mouth end bar insertion depth is 90mm
Referring to the operating procedure of operating condition one, grouting mouth end bar inserting paragraph end surface is measured to the of the first datum plane
One vertical range is 47.84mm, as shown in Figure 5；Therefore, the insertion depth of grouting mouth end bar is 137.5-47.84=
89.66mm；
Absolute error ε=| 90-89.66 |=0.34mm, ε=0.02d, wherein d is the diameter for connecting reinforcing bar.
Due to measured grouting mouth end bar insertion depth 89.66mm between 6d between 7d, be less than 8d (for
112mm), the connection reinforcing bar insertion depth therefore in operating condition three is determined as unqualified.
Operating condition four: grout outlet end bar insertion depth is 90mm
The probe of 3 D stereo measurement endoscope is directly protruded into grouting duct 56 from the grouting mouth 55 on prefabricated components surface
It is interior, grouting duct and sleeve delivery position bending upwards, using grouting mouth end bar and sleeve lining between gap after
It is continuous boost to extend into adjust suitably distance close to limiting block card position and rotate the direction of probe make imaging clearly, lead to
3 D stereo measurement endoscope is crossed the grout outlet end bar above the limit block card and limit block card in sleeve is imaged,
When selecting the imaging clearly of position, shooting obtains 3D rendering；
Then three points that block card lower surface is limited in image are selected, the plane definition that select three points are formed is the
Two datum planes then select the 4th point, end surface of the 4th point location in grout outlet end bar inserting paragraph, measurement end
Second vertical range of end surfaces to datum plane is 37.10mm, referring to shown in Fig. 6；The limit of the full grout sleeve of GTZQ414 model
For position block card with a thickness of 5mm, limiting the distance at the top of block card lower surface to sleeve is 127.5mm, extremely by limit block card lower surface
The difference of distance and the second vertical range at the top of grout sleeve obtains the insertion depth of grout outlet end bar, grout outlet end bar
Insertion depth is 127.5-37.10=90.4mm；
Absolute error ε=| 90-90.4 |=0.4mm, ε=0.03d, wherein d is the diameter for connecting reinforcing bar.
Due to measured grout outlet end bar insertion depth 90.4mm between 6d between 7d, be less than 8d (for
112mm), the connection reinforcing bar insertion depth therefore in operating condition four is determined as unqualified.
From above several actual measurement cases it is found that the feature high using full grout sleeve dimensional accuracy, three-dimensional using endoscope
Size measurement technique, by limiting the relative distance of block card in the middle part of connection reinforcing bar inserting paragraph end in measurement 3D rendering and sleeve,
Be attached reinforcing bar insertion depth survey calculation, detection accuracy is very high, measurement error relative to bar diameter be it is a small amount of,
Judgement for connecting reinforcing bar insertion depth hardly impacts.
In above-mentioned repeated detection, when probe is in the junction of pulp duct and sleeve and grouting duct and sleeve
It when junction, is first turned to, guides connection hose between grout outlet end bar and sleeve lining and to be in the milk by turning to
It is moved in gap between mouth end bar and sleeve lining, the direct shock of camera lens can be reduced, and convenient for turning to movement.And
And the quantity of the limit block card taken in the 3 d image is preferably 2, can be improved detection accuracy.
Above embodiments are only to absolutely prove preferred embodiment that is of the invention and being lifted, and protection scope of the present invention is not
It is limited to this.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in guarantor of the invention
Within the scope of shield.Protection scope of the present invention is subject to claims.
Claims (5)
1. a kind of detect the method for connecting reinforcing bar insertion depth in full grout sleeve splice, which is characterized in that the detection
Equipment used in method is that 3 D stereo measures endoscope, and the 3 D stereo measurement endoscope includes peeping in sequentially connected
Mirror host, connection hose, probe and camera lens；
The 3 D stereo measurement endoscope-use is in the insertion depth for detecting connection reinforcing bar in full grout sleeve, the connection reinforcing bar
Including grouting mouth end bar and grout outlet end bar, detection time should be after the completion of prefabricated components scene is spliced and sleeve is in the milk
Before construction；
When the insertion depth for detecting grouting mouth end bar, by the probe of 3 D stereo measurement endoscope directly from prefabricated structure
The grout outlet on part surface protrudes into pulp duct, downward in the bending of the delivery position of pulp duct and sleeve, utilizes grout outlet end
Gap between reinforcing bar and sleeve lining, which continues to advance downwardly, to be protruded into, and control probe guided bend finds imaging position, and passes through
3 D stereo measures endoscope and the grouting mouth end bar below the limit block card and limit block card in sleeve is imaged, when
When selecting the imaging clearly of position, shooting obtains 3D rendering；
Then three points that block card upper surface is limited in image are selected, the plane definition that select three points are formed is the first base
Directrix plane, then selects the 4th point, and the 4th point location calculates end table in the end surface of grouting mouth end bar inserting paragraph
It is hung down to the first vertical range of the first datum plane by the distance and first that limit block card upper surface to grout sleeve bottom in face
Directly the insertion depth of grouting mouth end bar is obtained apart from its difference；If the insertion depth for the mouth end bar that is in the milk is more than or equal to 8 times of steel
Muscle diameter, is determined as qualification, is otherwise determined as unqualified；
When the insertion depth for detecting grout outlet end bar, by the probe of 3 D stereo measurement endoscope directly from prefabricated structure
The grouting mouth on part surface protrudes into grouting duct, upward in the bending of the delivery position of grouting duct and sleeve, utilizes grouting mouth end
Gap between reinforcing bar and sleeve lining continues up propulsion and protrudes into, and control probe guided bend finds imaging position, and passes through
3 D stereo measures endoscope and the grout outlet end bar above the limit block card and limit block card in sleeve is imaged, when
When selecting the imaging clearly of position, shooting obtains 3D rendering；
Then three points that block card lower surface is limited in image are selected, the plane definition that select three points are formed is the second base
Directrix plane, then selects the 4th point, and the 4th point location calculates end table in the end surface of grout outlet end bar inserting paragraph
It is hung down to the second vertical range of the second datum plane by the distance at the top of limit block card lower surface to grout sleeve with second in face
Directly the insertion depth of grout outlet end bar is obtained apart from its difference；If the insertion depth of grout outlet end bar is more than or equal to 8 times of steel
Muscle diameter, is determined as qualification, is otherwise determined as unqualified.
2. detecting the method for connecting reinforcing bar insertion depth in full grout sleeve splice, feature as described in claim 1
It is, the camera lens is that forward sight 3 D stereo measures camera lens.
3. detecting the method for connecting reinforcing bar insertion depth in full grout sleeve splice, feature as described in claim 1
It is, the quantity of the limit block card taken in the 3D rendering is at least 2.
4. detecting the method for connecting reinforcing bar insertion depth in full grout sleeve splice, feature as described in claim 1
It is, when the junction popped one's head in pulp duct and sleeve and grouting duct and the junction of sleeve, is first turned
To guiding connection hose between grout outlet end bar and sleeve lining and grouting mouth end bar and sleeve lining by turning to
Between gap in move.
5. detecting the method for connecting reinforcing bar insertion depth in full grout sleeve splice, feature as described in claim 1
It is, the maximum guided bend degree of the probe in a straightened condition is greater than 160 °.
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| CN201810863699.2A CN108663006B (en) | 2018-08-01 | 2018-08-01 | A method of detecting connection reinforcing bar insertion depth in full grout sleeve splice |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810863699.2A CN108663006B (en) | 2018-08-01 | 2018-08-01 | A method of detecting connection reinforcing bar insertion depth in full grout sleeve splice |
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| CN108663006B true CN108663006B (en) | 2019-03-19 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109211909B (en) * | 2018-11-12 | 2021-01-22 | 上海市建筑科学研究院 | Sleeve grouting fullness detection method based on core drilling pore-forming |
| CN109579679B (en) * | 2018-11-13 | 2024-03-05 | 中建安装工程有限公司 | Half grout sleeve reinforcing bar anchor length detection device |
| CN109387141B (en) * | 2018-11-13 | 2024-03-08 | 中建安装工程有限公司 | Full grouting sleeve steel bar anchoring length detection device |
| CN109972764A (en) * | 2019-04-10 | 2019-07-05 | 南京弘正建设发展有限公司 | Assembled parapet mounting structure and its construction method |
| CN114965467B (en) * | 2022-05-10 | 2023-04-25 | 昆山市建设工程质量检测中心 | Method for distinguishing steel bars in grouted sleeve from inner wall of sleeve in drilling inspection |
| CN114960931B (en) * | 2022-06-10 | 2023-04-07 | 华济建设工程集团有限公司 | Concrete prefabricated wallboard and assembling method thereof |
| CN116929257B (en) * | 2023-07-25 | 2024-01-26 | 昆山市建设工程质量检测中心 | Prefabricated superimposed shear wall surface roughness acquisition method based on measurement type endoscope |
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| CN201429412Y (en) * | 2009-06-26 | 2010-03-24 | 徐州泰诺仕视觉科技有限公司 | Endoscope depth measuring device |
| JP6446251B2 (en) * | 2014-10-13 | 2018-12-26 | ゼネラル・エレクトリック・カンパニイ | Method and device for automatically identifying points of interest on anomalous surfaces |
| CN107478719B (en) * | 2017-06-27 | 2023-04-18 | 浙江大学 | Structure and method for detecting post-grouting sleeve type steel bar joint by built-in vibration test method |
| CN107288268A (en) * | 2017-06-27 | 2017-10-24 | 浙江大学 | Endoscope detects the structure and its method of grouting behind shaft or drift lining plug-in type sleeve reinforced bar joint |
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Effective date of registration: 20190531 Address after: No. 108 Changjiang North Road, Kunshan City, Suzhou City, Jiangsu Province Co-patentee after: Jiangsu Hongren Housing Industry Technology Development Co., Ltd. Patentee after: Kunshan Construction Engineering Quality Testing Center Address before: No. 108 Changjiang North Road, Kunshan City, Suzhou City, Jiangsu Province Patentee before: Kunshan Construction Engineering Quality Testing Center |
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Effective date of registration: 20210406 Address after: 215300 No.108, Changjiang North Road, Zhoushi Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Kunshan Construct Engineering Quality Testing Center Address before: No. 108 Changjiang North Road, Kunshan City, Suzhou City, Jiangsu Province Patentee before: Kunshan Construct Engineering Quality Testing Center Patentee before: JIANGSU HONGREN RESIDENTIAL INDUSTRIAL TECHNOLOGY DEVELOPMENT Co.,Ltd. |