CN114737621A - Nondestructive foundation pile detection method based on outer cross hole of pile - Google Patents
Nondestructive foundation pile detection method based on outer cross hole of pile Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 238000012545 processing Methods 0.000 claims abstract description 60
- 238000004458 analytical method Methods 0.000 claims abstract description 51
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- 238000012360 testing method Methods 0.000 claims abstract description 22
- 230000007547 defect Effects 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
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- 238000009434 installation Methods 0.000 claims abstract description 5
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- 230000005540 biological transmission Effects 0.000 claims description 4
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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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
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
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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
- G01N29/04—Analysing solids
- G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
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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
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
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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
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/48—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by amplitude comparison
Abstract
The invention discloses a nondestructive foundation pile detection method based on an outer cross hole of a pile, which specifically comprises the following steps: s1, firstly, installing detection equipment on the foundation pile to be detected, and after the installation is finished, operating the user interaction terminal to control the vibration equipment adjusting unit through the central processing module to set and execute the detection test parameters of the whole detection equipment. This nondestructive foundation pile detection method based on hole is striden outward to stake can realize carrying out accurate split processing analysis through the superimposed wave that produces the testing, avoid defect detection's superimposed wave confusion can't normally detect, fine reaching through carrying out quantization processing to the stress wave of gathering, make the purpose of the more concrete reaction foundation pile condition of detection structure, can fix a position the stake footpath change area, can quantify again and reflect the stake footpath change, fine stress wave that has prevented that a plurality of defects from forming often can superpose each other, the interference detection personnel carry out accurate judgement.
Description
Technical Field
The invention relates to the technical field of nondestructive testing of foundation piles, in particular to a nondestructive foundation pile testing method based on an outer cross hole of a pile.
Background
The low strain method is a detection method which adopts a low-energy transient or steady-state excitation mode to excite the pile top, actually measures a speed time course curve or a speed admittance curve of the pile top, and judges the integrity of the pile body through fluctuation theory analysis or frequency domain analysis. According to the excitation mode, the method can be divided into a transient excitation method and a steady excitation method; the analysis method can be divided into a time domain analysis method and a frequency domain analysis method. Regardless of the partitioning, in operation, the plurality of clusters are routinely analyzed based on wave theory. The time domain signals and the frequency domain signals can form corresponding relations after Fourier transformation, if the boundary environment of the foundation pile is the same as the initial environment, the same analysis result can be obtained, common low-strain detection methods comprise a hydroelectric effect method, a resonance method, a reflection wave method and the like, the detection is convenient, and meanwhile, higher economic benefits can be generated, so that the low-strain detection method has the advantage of being the low-strain detection method, the problems in the pile foundation can be timely and quickly judged, and the cost can be saved.
Although present low strain method can fix a position stake footpath change area, but unable quantization reflection stake footpath change, often can superpose each other to the stress wave that a plurality of defects formed, the interference measurement personnel carry out accurate judgement, and relatively poor to bridge foundation pile suitability, can not realize carrying out accurate split processing analysis through the superimposed wave to the testing production, avoid defect detection's superimposed wave confusion can't carry out normal detection, can't reach through carrying out quantization processing to the stress wave of gathering, make the purpose that detects the more concrete reaction foundation pile condition of structure, thereby the foundation pile safety inspection who gives people has brought very big inconvenience.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a nondestructive foundation pile detection method based on a pile outer span hole, which solves the problems that although the existing low-strain method can position a pile diameter change area, the pile diameter change cannot be quantitatively reflected, stress waves formed by a plurality of defects are often mutually superposed to interfere detection personnel to accurately judge, the applicability to a bridge foundation pile is poor, the superposed waves generated by a detection test cannot be accurately split, processed and analyzed, the disordered superposed waves of the defect detection cannot be normally detected, and the aim of more specifically reflecting the foundation pile condition of a detection structure cannot be achieved by quantitatively processing the collected stress waves.
(II) technical scheme
In order to realize the purpose, the invention is realized by the following technical scheme: a nondestructive foundation pile detection method based on external cross holes of a pile specifically comprises the following steps:
s1, firstly, installing detection equipment on the foundation pile to be detected, and after the installation is finished, operating the user interaction terminal to control the vibration equipment adjusting unit through the central processing module to set and execute detection test parameters of the whole detection equipment;
s2, controlling the stress wave acquisition module to acquire the stress echo generated by the foundation pile shock vibration executed in the step S1 through the central processing module, and transmitting the acquired stress echo into the stress wave analysis processing unit for stress wave analysis processing, wherein the stress wave analysis processing unit can send the stress wave to the analysis algorithm database module in the process of analyzing and processing the stress wave;
s3, transmitting the stress wave analyzed and processed in the step S2 to a foundation pile index quantization unit by the central processing module to perform data quantization processing on the stress wave analyzed and processed;
s4, the detection data after the quantization in the step S3 are transmitted to the user interaction terminal through the central processing module for display and observation.
Preferably, in step S1, the shock device adjusting unit includes a control instruction editing module, a control instruction analyzing module, and a control instruction executing module, wherein an output shaft of the control instruction editing module is electrically connected to an input end of the control instruction analyzing module, and an output end of the control instruction analyzing module is electrically connected to an input end of the control instruction executing module.
Preferably, the step S1 of controlling the tuning unit of the vibration device to set the test parameters of the whole testing device includes:
t1, firstly, editing the detection test parameters into the system through a control instruction editing module;
t2, performing debugging analysis on the edited test parameters through a control instruction analysis module, and avoiding damage to the foundation pile caused by wrong parameters;
and T3, transmitting the control parameter command after the debugging analysis of the step T2 is qualified to a vibration execution component through a control command execution module to carry out vibration operation according to an expected command.
Preferably, the stress wave analysis processing unit in step S2 includes a superposition wave identification module, a unit wave splitting module, a unit wave analysis module, and an abnormal wave interval calculation module, wherein an output end of the superposition wave identification module is electrically connected to an input end of the unit wave splitting module, an output end of the unit wave splitting module is electrically connected to an input end of the unit wave analysis module, and an output end of the unit wave analysis module is electrically connected to an input end of the abnormal wave interval calculation module.
Preferably, the stress wave analysis processing in step S2 includes the specific steps of:
e1, identifying whether the collected stress wave is a superposition wave or not by the amplitude and frequency characteristics of the collected stress wave through a superposition wave identification module, and directly transmitting the collected stress wave into a foundation pile index quantization unit for quantization if the collected stress wave is not the superposition wave;
e2, if the superposition wave is identified, collecting and integrating stress wave data with the same frequency and the same amplitude into a unit wave through a unit wave splitting module, analyzing and debugging the collected and integrated unit wave through a unit wave analysis module, and transmitting the split unit wave into a foundation pile index quantization unit for quantization processing;
e3, calculating the o-spacing between every two unit waves through the phase difference data of the frequency between every two unit waves by an abnormal wave spacing calculation module, and judging the positions of different defects of the foundation pile.
Preferably, the pile index quantization unit in step S3 includes an image data conversion module, a stress wave characteristic value extraction module, a characteristic value integration module, and a quantized data transmission module, and an output end of the image data conversion module is electrically connected to an input end of the stress wave characteristic value extraction module.
Preferably, the output end of the stress wave characteristic value extraction module is electrically connected with the input end of the characteristic value integration module, and the output end of the characteristic value integration module is electrically connected with the input end of the quantized data sending module.
Preferably, the data quantization processing of the stress wave in step S3 specifically includes the following steps:
p1, converting the stress wave image data into binary data by an image data conversion module in the foundation pile index quantization unit;
p2, extracting a frequency characteristic value, a period characteristic value and an amplitude characteristic value in the converted data through a stress wave characteristic value extraction module;
and P3, integrating the characteristic values into a quantization table graph through a characteristic value integration module, and sending the quantization table graph to the central processing module through a quantization data sending module.
(III) advantageous effects
The invention provides a nondestructive foundation pile detection method based on a cross hole outside a pile. Compared with the prior art, the method has the following beneficial effects: the nondestructive foundation pile detection method based on the outer cross hole of the pile specifically comprises the following steps: s1, firstly, installing detection equipment on the foundation pile to be detected, and after the installation is finished, operating the user interaction terminal to control the vibration equipment adjusting unit through the central processing module to set and execute detection test parameters of the whole detection equipment; s2, controlling the stress wave acquisition module to acquire the stress echo generated by the foundation pile shock vibration executed in the step S1 through the central processing module, and transmitting the acquired stress echo into the stress wave analysis processing unit for stress wave analysis processing, wherein the stress wave analysis processing unit can send the stress wave to the analysis algorithm database module in the process of analyzing and processing the stress wave; s3, transmitting the stress wave analyzed and processed in the step S2 to a foundation pile index quantization unit by the central processing module to perform data quantization processing on the stress wave analyzed and processed; s4, the detection data after the quantization of the step S3 are transmitted to a user interaction terminal through a central processing module for displaying and observing, the superposed waves generated by the detection test can be accurately split, processed and analyzed, the disordered superposed waves of the defect detection can be avoided from being detected normally, the purpose of enabling the detection structure to reflect the foundation pile condition more specifically through the quantitative processing of the collected stress waves can be well achieved, the pile diameter change area can be located, the pile diameter change can be reflected quantitatively, the stress waves formed by a plurality of defects are well prevented from being superposed with one another, the detection personnel are interfered for accurate judgment, and the method can have good applicability on the bridge foundation pile, so that the safety detection of the foundation pile for people is greatly facilitated.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic block diagram of the structure of the detection system of the present invention;
FIG. 3 is a schematic block diagram of the structure of a pile index quantization unit according to the present invention;
fig. 4 is a schematic block diagram of the structure of the tuning unit of the vibration striking device according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention provides a technical solution: a nondestructive foundation pile detection method based on external cross holes of a pile specifically comprises the following steps:
s1, firstly, installing detection equipment on the foundation pile to be detected, and after the installation is finished, operating the user interaction terminal to control the vibration equipment adjusting unit through the central processing module to set and execute detection test parameters of the whole detection equipment;
s2, controlling the stress wave acquisition module to acquire the stress echo generated by the foundation pile shock vibration executed in the step S1 through the central processing module, and transmitting the acquired stress echo into the stress wave analysis processing unit for stress wave analysis processing, wherein the stress wave analysis processing unit can send the stress wave to the analysis algorithm database module in the process of analyzing and processing the stress wave;
s3, transmitting the stress wave analyzed and processed in the step S2 to a foundation pile index quantization unit by the central processing module to perform data quantization processing on the stress wave analyzed and processed;
s4, the detection data after the quantization in the step S3 are transmitted to the user interaction terminal through the central processing module for display and observation.
In the embodiment of the present invention, the vibration striking device adjusting unit in step S1 includes a control instruction editing module, a control instruction analyzing module, and a control instruction executing module, wherein an output shaft of the control instruction editing module is electrically connected to an input end of the control instruction analyzing module, and an output end of the control instruction analyzing module is electrically connected to an input end of the control instruction executing module.
In the embodiment of the present invention, the specific steps of controlling the vibration device adjusting unit to set the detection test parameters of the entire detection device in step S1 are as follows:
t1, firstly, editing the detection test parameters into the system through a control instruction editing module;
t2, performing debugging analysis on the edited test parameters through a control instruction analysis module, and avoiding damage to the foundation pile caused by wrong parameters;
and T3, transmitting the control parameter command after the debugging analysis of the step T2 is qualified to a vibration execution component through a control command execution module to carry out vibration operation according to an expected command.
In the embodiment of the present invention, the stress wave analysis processing unit in step S2 includes a superposition wave identification module, a unit wave splitting module, a unit wave analysis module, and an abnormal wave interval calculation module, wherein an output end of the superposition wave identification module is electrically connected to an input end of the unit wave splitting module, an output end of the unit wave splitting module is electrically connected to an input end of the unit wave analysis module, and an output end of the unit wave analysis module is electrically connected to an input end of the abnormal wave interval calculation module.
In the embodiment of the present invention, the stress wave analysis processing in step S2 specifically includes:
e1, identifying whether the collected stress wave is a superposition wave or not by the amplitude and frequency characteristics of the collected stress wave through a superposition wave identification module, and directly transmitting the collected stress wave into a foundation pile index quantization unit for quantization if the collected stress wave is not the superposition wave;
e2, if the superposition wave is identified, collecting and integrating stress wave data with the same frequency and the same amplitude into a unit wave through a unit wave splitting module, analyzing and debugging the collected and integrated unit wave through a unit wave analysis module, and transmitting the split unit wave into a foundation pile index quantization unit for quantization processing;
e3, calculating the o-spacing between every two unit waves through the phase difference data of the frequency between every two unit waves by an abnormal wave spacing calculation module, and judging the positions of different defects of the foundation pile.
In the embodiment of the present invention, the pile index quantization unit in step S3 includes an image data conversion module, a stress wave characteristic value extraction module, a characteristic value integration module, and a quantized data transmission module, wherein an output end of the image data conversion module is electrically connected to an input end of the stress wave characteristic value extraction module, an output end of the stress wave characteristic value extraction module is electrically connected to an input end of the characteristic value integration module, and an output end of the characteristic value integration module is electrically connected to an input end of the quantized data transmission module.
In the embodiment of the present invention, the data quantization processing of the stress wave in step S3 specifically includes the following steps:
p1, converting the stress wave image data into binary data by an image data conversion module in the foundation pile index quantization unit;
p2, extracting a frequency characteristic value, a period characteristic value and an amplitude characteristic value in the converted data through a stress wave characteristic value extraction module;
and P3, integrating the characteristic values into a quantization table graph through a characteristic value integration module, and sending the quantization table graph to the central processing module through a quantization data sending module.
In conclusion, the invention can realize accurate splitting processing and analysis of the superposed waves generated by the detection test, so as to avoid that the superposed waves generated by the defect detection cannot be normally detected due to disorder, and well achieve the purpose of enabling the detection structure to reflect the condition of the foundation pile more specifically by carrying out quantitative processing on the collected stress waves, thereby not only positioning the pile diameter change area, but also quantitatively reflecting the pile diameter change, well preventing the stress waves formed by a plurality of defects from being mutually superposed frequently, interfering the detection personnel to carry out accurate judgment, having good applicability on the bridge foundation pile and greatly facilitating the safety detection of the foundation pile for people.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A nondestructive foundation pile detection method based on outer span holes of piles is characterized in that: the method specifically comprises the following steps:
s1, firstly, installing detection equipment on the foundation pile to be detected, and after the installation is finished, operating the user interaction terminal to control the vibration equipment adjusting unit through the central processing module to set and execute detection test parameters of the whole detection equipment;
s2, controlling the stress wave acquisition module to acquire the stress echo generated by the foundation pile vibration executed in the step S1 through the central processing module, and transmitting the acquired stress echo to the stress wave analysis processing unit for stress wave analysis processing, wherein the stress wave analysis processing unit sends the stress wave to the analysis algorithm database module in the process of analyzing and processing the stress wave;
s3, transmitting the stress wave analyzed and processed in the step S2 to a foundation pile index quantization unit by the central processing module to perform data quantization processing on the stress wave analyzed and processed;
s4, the detection data after the quantization in the step S3 are transmitted to the user interaction terminal through the central processing module for display and observation.
2. The nondestructive foundation pile detection method based on the cross hole outside the pile, according to claim 1, is characterized in that: in step S1, the vibration striking device adjusting unit includes a control instruction editing module, a control instruction analyzing module, and a control instruction executing module, wherein an output shaft of the control instruction editing module is electrically connected to an input end of the control instruction analyzing module, and an output end of the control instruction analyzing module is electrically connected to an input end of the control instruction executing module.
3. The nondestructive foundation pile detection method based on the cross hole outside the pile, according to claim 2, is characterized in that: the specific steps of controlling the tuning unit of the vibration device to set the testing parameters of the whole testing device in step S1 are as follows:
t1, firstly, editing the detection test parameters into the system through a control instruction editing module;
t2, performing debugging analysis on the edited test parameters through a control instruction analysis module, and avoiding damage to the foundation pile caused by wrong parameters;
and T3, transmitting the control parameter command qualified by the debugging analysis in the step T2 to a vibration execution component through a control command execution module to perform vibration operation according to the expected command.
4. The nondestructive foundation pile detection method based on the cross hole outside the pile, according to claim 1, is characterized in that: the stress wave analyzing and processing unit in the step S2 includes a superposition wave identification module, a unit wave splitting module, a unit wave analysis module, and an abnormal wave interval calculation module, wherein an output end of the superposition wave identification module is electrically connected to an input end of the unit wave splitting module, an output end of the unit wave splitting module is electrically connected to an input end of the unit wave analysis module, and an output end of the unit wave analysis module is electrically connected to an input end of the abnormal wave interval calculation module.
5. The nondestructive foundation pile detection method based on the external cross-hole of the pile as claimed in claim 4, wherein: the stress wave analysis processing in step S2 includes the following specific steps:
e1, identifying whether the collected stress wave is a superposition wave or not by the amplitude and frequency characteristics of the collected stress wave through a superposition wave identification module, and directly transmitting the collected stress wave into a foundation pile index quantization unit for quantization if the collected stress wave is not the superposition wave;
e2, if the superposition wave is identified, collecting and integrating stress wave data with the same frequency and the same amplitude into a unit wave through a unit wave splitting module, analyzing and debugging the collected and integrated unit wave through a unit wave analysis module, and transmitting the split unit wave into a foundation pile index quantization unit for quantization processing;
e3, calculating the o-spacing between every two unit waves through the phase difference data of the frequency between every two unit waves by an abnormal wave spacing calculation module, and judging the positions of different defects of the foundation pile.
6. The nondestructive foundation pile detection method based on the cross hole outside the pile, according to claim 1, is characterized in that: the pile index quantization unit in the step S3 includes an image data conversion module, a stress wave characteristic value extraction module, a characteristic value integration module, and a quantized data transmission module, and an output end of the image data conversion module is electrically connected to an input end of the stress wave characteristic value extraction module.
7. The nondestructive foundation pile detection method based on the cross hole outside the pile, according to claim 6, is characterized in that: the output end of the stress wave characteristic value extraction module is electrically connected with the input end of the characteristic value integration module, and the output end of the characteristic value integration module is electrically connected with the input end of the quantized data sending module.
8. The nondestructive foundation pile detection method based on the cross hole outside the pile, according to claim 7, is characterized in that: the data quantization processing of the stress wave in the step S3 specifically includes the following steps:
p1, converting the stress wave image data into binary data by an image data conversion module in the foundation pile index quantization unit;
p2, extracting a frequency characteristic value, a period characteristic value and an amplitude characteristic value in the converted data through a stress wave characteristic value extraction module;
and P3, integrating the characteristic values into a quantization table graph through a characteristic value integration module, and sending the quantization table graph to the central processing module through a quantization data sending module.
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| CN110306606A (en) * | 2019-06-18 | 2019-10-08 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Pile foundation quality monitoring method and device for work progress |
| CN112302061A (en) * | 2020-09-29 | 2021-02-02 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Intelligent rapid interpretation method for integrity detection signal of low-strain foundation pile |
-
2022
- 2022-04-02 CN CN202210349574.4A patent/CN114737621A/en active Pending
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|---|---|---|---|---|
| JPH0988110A (en) * | 1995-09-21 | 1997-03-31 | Mitsubishi Heavy Ind Ltd | Method of diagnosing defect of foundation pile |
| JP2008185426A (en) * | 2007-01-29 | 2008-08-14 | Takenaka Komuten Co Ltd | Integrity evaluation support device, method, and program of concrete pile |
| CN103439411A (en) * | 2013-09-10 | 2013-12-11 | 武汉乾岩工程技术有限公司 | Multi-cross-hole ultrasonic detection system and detection method thereof |
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| CN112302061A (en) * | 2020-09-29 | 2021-02-02 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Intelligent rapid interpretation method for integrity detection signal of low-strain foundation pile |
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