CN110146593B - Method for detecting compactness of grouting sleeves in batches - Google Patents
Method for detecting compactness of grouting sleeves in batches Download PDFInfo
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- CN110146593B CN110146593B CN201910546877.3A CN201910546877A CN110146593B CN 110146593 B CN110146593 B CN 110146593B CN 201910546877 A CN201910546877 A CN 201910546877A CN 110146593 B CN110146593 B CN 110146593B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/024—Mixtures
- G01N2291/02416—Solids in liquids
Abstract
The invention discloses a method for detecting compactness of grouting sleeves in batches, which comprises the steps of calculating the box dimension of an excitation feedback waveform of each grouting sleeve through MATLAB, then carrying out detection sequencing on each grouting sleeve through analysis of the box dimension, and finally carrying out detection on the grouting sleeves one by one according to the sequencing until three qualified grouting sleeves are continuously detected; by the detection method, the compactness of the batch grouting sleeves is detected, and workers do not need to perform fine detection on all grouting sleeves, so that the detection efficiency of the workers is greatly improved, and the working time of the workers in a radiation environment is effectively shortened; and compared with other detection methods, the detection result is more convincing, more accurate and more reliable.
Description
Technical Field
The invention relates to the field of assembly type buildings, in particular to a method for detecting compactness of grouting sleeves in batches.
Background
Interpretation of terms:
box dimension: the vibration wave signal s ∈ F generated by the stimulated vibration of the grouting sleeve is assumed, wherein F is n-dimensional Euclidean space R n The above closed set. R is to be n Divided into square squares of width delta as small as possible, if N δ The number of grids covering the F set least on the discrete space with the grid width δ, and we define the s-box dimension of the vibration wave as:
along with the rapid development of economy and urbanization in China, the building industrialization process is accelerated, and the traditional cast-in-place building technology cannot meet the development requirements of the building industry due to unreasonable resource allocation, low construction mechanization degree and poor construction operation environment. The fabricated building is taken as a standardized green building form which is developed in recent years, has high efficiency, high speed, energy conservation, environmental protection and guaranteed quality, receives attention of the building industry, and is greatly supported and popularized by relevant ministries and commissions of the national and regional building industry.
The shock resistance and integrity of the fabricated building are important influencing factors restricting the development of the fabricated building, and in order to improve the shock resistance and integrity of the fabricated building, reliable connection between fabricated building components needs to be ensured. The common assembly type building connection mode is mainly realized by adopting a grouting sleeve, the integrity of the assembly type building is effectively ensured by the connection mode, and accordingly, the shock resistance of the assembly type building is correspondingly improved, and the assembly type building connection mode is widely applied to building structures such as prefabricated shear walls of buildings, assembly type box girders of bridges, abutment piers of bridges and the like.
The grouting sleeve mainly comprises a connecting steel bar and a sleeve. At present, the conventional method for detecting the compactness of the grouting sleeve is to adopt methods such as unidirectional tension, high-stress repeated tension and compression test, large-deformation repeated tension and compression test and the like for a grouting sleeve joint test piece; in a nondestructive testing method, a series of methods such as an ultrasonic method, an impact echo method, an infrared thermal imaging method, an X-ray industrial CT method and the like can obtain the information of the compactness of the grouting sleeve to a certain extent; however, when the methods are used for detecting the batch grouting sleeves, time and labor are wasted, most of the test equipment of the methods is too large and complicated, the cost of a detection instrument is high, and meanwhile, some methods also have the problems of ray radiation, environmental pollution and the like, and if workers stay in the environment for a long time, the workers can be injured to a human body to a great extent; therefore, a detection method capable of efficiently detecting the compactness of the grouting sleeve in batches does not exist at present.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a method for detecting the compactness of grouting sleeves in batches, so as to improve the efficiency of detecting the compactness of the grouting sleeves in batches.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for detecting compactness of a grouting sleeve in batches is characterized in that reinforcing steel bars are embedded into the upper end and the lower end of the grouting sleeve respectively, and the reinforcing steel bars at the upper end and the lower end are fixed through concrete in the grouting sleeve; the grouting sleeve is provided with a grout outlet and a grouting port;
the method for detecting the compactness of the grouting sleeves in batches comprises the following steps:
step 6, performing fine detection on the grouting sleeves arranged in sequence in the step 5 one by one, wherein the fine detection can accurately obtain the compactness of the grouting sleeves;
and 7, in the process of sequentially carrying out fine detection on each grouting sleeve one by one, if three grouting sleeves are continuously detected to be compact grouting sleeves, stopping fine detection, wherein the detected non-compact grouting sleeves are all non-compact grouting sleeves in the batch of grouting sleeves, and the rest of the non-compact grouting sleeves are all compact grouting sleeves.
As an improvement of the scheme, the fine detection is an X-ray industrial CT method.
Further, the excitation wave is generated by a giant magneto-induced seismic source, and the giant magneto-induced seismic source is fixed at a grout outlet of the grouting sleeve; the giant magnetostrictive seismic source can generate waveforms with different vibration frequencies, and the waveforms are controllable; or the vibration wave is generated by knocking the pulp outlet by a vibration hammer.
Further, in step 1, a coupling agent is coated on the contact surface between the vibration sensor and the grouting sleeve.
Further, the coupling agent is butter.
The invention has the beneficial effects that: calculating the box dimension of the excitation feedback waveform of each grouting sleeve through MATLAB, detecting and sequencing each grouting sleeve through analysis of the box dimension, and finally detecting the grouting sleeves one by one according to sequencing until three qualified grouting sleeves are continuously detected; by the detection method, the compactness of the batch grouting sleeves is detected, and workers do not need to perform fine detection on all the grouting sleeves, so that the detection efficiency of the workers is greatly improved, and the working time of the workers in a radiation environment is effectively shortened; and compared with other detection methods, the detection result is more convincing, more accurate and more reliable.
Drawings
The invention is further illustrated by the following examples in conjunction with the drawings.
FIG. 1 is a schematic view of the overall structure of the present invention during detection.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the descriptions of up, down, left, right, front, rear, etc. used in the present invention are only relative to the positional relationship of the respective components of the present invention with respect to each other in the drawings.
Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.
As shown in fig. 1, in the method for detecting the compactness of the grouting sleeve in batches, reinforcing steel bars 2 are respectively embedded at the upper end and the lower end of the grouting sleeve, and the reinforcing steel bars 2 at the upper end and the lower end are fixed through concrete in the grouting sleeve; the grouting sleeve is provided with a grout outlet 11 and a grouting opening 12;
the method for detecting the compactness of the grouting sleeves in batches comprises the following steps:
step 6, performing fine detection on the grouting sleeves arranged in sequence in the step 5 one by one, wherein the fine detection can accurately obtain the compactness of the grouting sleeves;
and 7, in the process of sequentially and finely detecting the grouting sleeves one by one, if three grouting sleeves are continuously detected to be compact grouting sleeves, stopping fine detection, wherein the detected non-compact grouting sleeves are all non-compact grouting sleeves in the batch of grouting sleeves, and the rest of the non-compact grouting sleeves are all compact grouting sleeves.
Calculating the box dimension of the shock excitation feedback waveform of each grouting sleeve through MATLAB, then carrying out detection sequencing on each grouting sleeve through analysis of the box dimension, and finally carrying out detection on the grouting sleeves one by one according to the sequencing until three qualified grouting sleeves are continuously detected; by the detection method, the compactness of the batch grouting sleeves is detected, and workers do not need to perform fine detection on all grouting sleeves, so that the detection efficiency of the workers is greatly improved, and the working time of the workers in a radiation environment is effectively shortened; and compared with other detection methods, the detection result is more convincing, more accurate and more reliable.
According to practical situations, it is preferable that the fine detection is an X-ray industrial CT method in order to ensure accuracy of the fine detection. Meanwhile, for the convenience of detection, the vibration wave is generated by knocking the slurry outlet 11 by the vibration exciter 6. However, according to practical situations, in order to keep the excitation wave in step 2 as similar as possible in each detection to improve the detection accuracy, it is preferable that the excitation wave is generated by a giant magnetostrictive source fixed at the grout outlet 11 of the grouting sleeve; the giant magnetostrictive sources can generate waveforms with different vibration frequencies, and the waveforms can be controlled. In addition, in order to better transmit the excitation signal, a coupling agent is coated on the contact surface between the vibration sensor 3 and the grouting sleeve when the operation of step 1 is performed. The coupling agent can be butter, toothpaste and the like according to actual conditions, and in the invention, the coupling agent is preferably butter.
The above-described embodiments are merely exemplary of the present invention and are not intended to limit the scope of the invention, which is defined by the claims and the equivalents thereof.
Claims (5)
1. The method for detecting the compactness of the grouting sleeve in batches is characterized in that reinforcing steel bars (2) are embedded at the upper end and the lower end of the grouting sleeve respectively, and the reinforcing steel bars (2) at the upper end and the lower end are fixed through concrete in the grouting sleeve; the grouting sleeve is provided with a grout outlet (11) and a grouting opening (12);
the method for detecting the compactness of the batch grouting sleeves comprises the following steps:
step 1, arranging a vibration sensor (3) at a grouting opening (12) of a grouting sleeve to be detected, wherein the vibration sensor (3) is connected with a data acquisition device (4); the data acquisition equipment (4) is connected with a computer (5);
step 2, starting the data acquisition equipment (4), the vibration sensor (3) and the computer (5), enabling a grout outlet (11) of the grouting sleeve to be detected to generate an excitation wave, and then acquiring a feedback waveform of the grouting sleeve to be detected;
step 3, repeating the step 1 and the step 2, and detecting the rest grouting sleeves;
step 4, calculating the box dimension of each grouting sleeve feedback waveform by using MATLAB software, reserving the box dimension to one bit behind a decimal point according to rounding, and then calculating the average value of the box dimension of each grouting sleeve feedback waveform;
step 5, respectively subtracting the box dimension of the feedback waveform of each grouting sleeve from the average value of the box dimensions in the step 4, and then carrying out absolute value processing on the obtained difference values; finally, sequencing all grouting sleeves in a sequence from large to small according to the absolute value;
step 6, performing fine detection on the grouting sleeves arranged in sequence in the step 5 one by one, wherein the fine detection can accurately obtain the compactness of the grouting sleeves;
and 7, in the process of sequentially and finely detecting the grouting sleeves one by one, if three grouting sleeves are continuously detected to be compact grouting sleeves, stopping fine detection, wherein the detected non-compact grouting sleeves are all non-compact grouting sleeves in the batch of grouting sleeves, and the rest of the non-compact grouting sleeves are all compact grouting sleeves.
2. The method for batch testing of grouting sleeve compactness according to claim 1, characterized in that the fine testing is X-ray industrial CT.
3. The method for batch testing the compactness of grouting sleeves according to claim 1, characterized in that the excitation wave is generated by a giant magneto source fixed to the grout outlet (11) of the grouting sleeve; the giant magnetostrictive sources can generate waveforms with different vibration frequencies, and the waveforms are controllable; or the vibration wave is generated by knocking the slurry outlet (11) by the vibration hammer (6).
4. The method for batch testing the compactness of the grouting sleeve according to claim 1, wherein in step 1, a coupling agent is coated on the contact surface of the vibration sensor (3) and the grouting sleeve.
5. The method for batch testing of grouting sleeve compactness according to claim 4, characterized in that the coupling agent is butter.
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| CN201910546877.3A CN110146593B (en) | 2019-06-24 | 2019-06-24 | Method for detecting compactness of grouting sleeves in batches |
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| CN201910546877.3A CN110146593B (en) | 2019-06-24 | 2019-06-24 | Method for detecting compactness of grouting sleeves in batches |
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| CN110146593B true CN110146593B (en) | 2022-12-02 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111443131B (en) * | 2020-04-26 | 2022-11-18 | 广州市市政工程试验检测有限公司 | Method for detecting grouting compactness of steel bar sleeve |
| CN113406197A (en) * | 2021-03-26 | 2021-09-17 | 广州市市政工程试验检测有限公司 | Intelligent detection method for grouting compactness of sleeve |
| CN113219056A (en) * | 2021-05-06 | 2021-08-06 | 昆山匹希通检测科技有限公司 | Ultrasonic detection method for grouting fullness of prefabricated concrete structure sleeve |
| CN113899819A (en) * | 2021-10-29 | 2022-01-07 | 福建工程学院 | Device, system and method for measuring grouting compactness of prestressed duct |
| CN114018800B (en) * | 2021-10-29 | 2023-06-30 | 福建工程学院 | Device and method for measuring grouting compactness of prestressed duct |
Citations (3)
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| CN106596298A (en) * | 2015-11-10 | 2017-04-26 | 安徽建筑大学 | Sleeve grouting compactness detection device and detection method |
| CN108801345A (en) * | 2018-06-04 | 2018-11-13 | 广东省建筑科学研究院集团股份有限公司 | The tandem sleeve grouting detection structures and methods of vertical prefabricated components |
| CN109085235A (en) * | 2018-08-27 | 2018-12-25 | 北京市康科瑞工程检测技术有限责任公司 | A kind of ultrasonic comprehensive factor figure recognition detection method of sleeve grouting plumpness |
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| CN106596298A (en) * | 2015-11-10 | 2017-04-26 | 安徽建筑大学 | Sleeve grouting compactness detection device and detection method |
| CN108801345A (en) * | 2018-06-04 | 2018-11-13 | 广东省建筑科学研究院集团股份有限公司 | The tandem sleeve grouting detection structures and methods of vertical prefabricated components |
| CN109085235A (en) * | 2018-08-27 | 2018-12-25 | 北京市康科瑞工程检测技术有限责任公司 | A kind of ultrasonic comprehensive factor figure recognition detection method of sleeve grouting plumpness |
Non-Patent Citations (1)
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| 锚杆锚固质量无损检测理论与智能诊断技术研究;李张明;《中国优秀博硕士学位论文全文数据库(博士) 工程科技II辑》;20090715(第7期);1-111 * |
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Effective date of registration: 20210910 Address after: 510030 room 113, room 80, No. 733, Dongfeng East Road, Yuexiu District, Guangzhou, Guangdong Applicant after: GUANGZHOU MUNICIPAL ENGINEERING TESTING Co.,Ltd. Applicant after: GUANGZHOU CONSTRUCTION ENGINEERING Co.,Ltd. Address before: 510520 first floor, building B, yulongju, 1111 Tianyuan Road, Tianhe District, Guangzhou City, Guangdong Province Applicant before: GUANGZHOU MUNICIPAL ENGINEERING TESTING Co.,Ltd. |
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