CN103630605B - A kind of prestress anchorage cable pipeline slip casting detection method - Google Patents
A kind of prestress anchorage cable pipeline slip casting detection method Download PDFInfo
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- CN103630605B CN103630605B CN201310628351.2A CN201310628351A CN103630605B CN 103630605 B CN103630605 B CN 103630605B CN 201310628351 A CN201310628351 A CN 201310628351A CN 103630605 B CN103630605 B CN 103630605B
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- elastic wave
- multiple tracks
- slip casting
- cable pipeline
- anchor cable
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Abstract
This patent discloses a kind of prestress anchorage cable pipeline slip casting detection method, linear sensor array (1) is formed by multiple speed or acceleration transducer, direction of extension perpendicular to detected anchor cable pipeline (2) is fixing in concrete surface coupling, sensor is connected with multiple tracks elastic wave register instrument (5) input end, focus (6) excites elastic wave on anchor cable termination (3), and excitation synchronizing signal is connected to multiple tracks elastic wave register instrument (5), epicenter excitation elastic wave, multiple tracks elastic wave register instrument (5) record multiple tracks elastic wave; Sensor array (1) once records one group of multiple tracks elastic wave record in concrete surface fixed coupling, linear sensor array moves in parallel a spacing along anchor cable ducts stretched direction and is coupled with concrete surface fixing, obtains the multiple tracks elastic wave record along anchor cable ducts stretched direction diverse location.The present invention plants the accuracy that can improve slip casting perils detecting position and proterties.
Description
Technical field
The present invention relates to a kind of prestress anchorage cable pipeline slip casting detection method, the inventive method is also applicable to the detection of various anchor pole and anchorage cable anchoring quality.
Technical background
At present, prestress anchorage cable duct grouting leakiness is the common quality defect often occurred in prestressed pore passage grouting construction, has a strong impact on the existence life-span that prestress builds.When duct grouting quality exists serious problems, due to steel bar corrosion, bridge collapse may be there is after bridge completes a period of time and even occur collapse accident.How to make prestressed pipe be in the milk closely knit full become design and construction common faced by major issue.The detection method of current use comprises wave velocity method or supercritical ultrasonics technology, and single-point single sweep operation detects often, and have Three Difficult Issues not solve, one is due to signal attenuation, is difficult to useful signal be detected; Two are, because various tracer signal source can not be assert, often to the judgement of defective locations with locate inaccurate; Three is due to this projection in concrete surface of shaping anchor cable pipeline pipeline and non-rectilinear, adopts single-point acquiring pattern to be difficult to directly locate.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of prestress anchorage cable pipeline slip casting detection method that can improve the accuracy of slip casting perils detecting position and proterties.
In order to solve the problems of the technologies described above, prestress anchorage cable pipeline slip casting detection method provided by the invention.One group of linear sensor array is formed by multiple speed or acceleration transducer, direction of extension perpendicular to detected anchor cable pipeline is fixing in concrete surface coupling, sensor output signal is connected with multiple tracks elastic wave register instrument input end by multiple signals cable, focus excites elastic wave on anchor cable termination, and excitation synchronizing signal is connected to the synchronous Trigger input port of multiple tracks elastic wave register instrument by signal wire; Focus excitation elastic wave, multiple tracks elastic wave register instrument record multiple tracks elastic wave; Sensor array is listed in concrete surface fixed coupling and once records one group of multiple tracks elastic wave record, linear sensor array moves in parallel a spacing along anchor cable ducts stretched direction and is coupled with concrete surface fixing, obtains the multiple tracks elastic wave record along anchor cable ducts stretched direction diverse location.
Described linear sensor array is the face array of two or more linear sensor array composition.
Described multiple tracks elastic wave register instrument can be multichannel seismic instrument or the ultrasonic detection instrument with Multi-path synchronous acquisition function.
Anchor cable pipeline head excitation elastic wave is transient state focus, vibroseis or stable state focus, as long as multiple sensor synchronous acquisition, the scattered signal produced by slip casting fault location arrives linearly aligned multiple sensor time and all possesses Hyperbolic Feature.
For the sensor arrangement of a certain fixed position, anchor cable pipeline head excitation focus repeatedly encourages, and realizes signal and strengthens or compacting noise, thus improve the reliability of testing result by Signal averaging mode.
Namely described multiple tracks sensor is transverse wave sensor, or Longitudinalwave sensor, and its coupling scheme of installing accordingly in coupling scheme and seismic prospecting or ultrasound examination are similar.
The signal analysis method of described prestress anchorage cable pipeline grouting quality detection method is: from the scattered signal of anchor cable pipeline slip casting defective locations point by linear sensor array by seismograph record, at that time-meet Hyperbolic Equation apart from curve, the center of hyperbolic curve vertex correspondence hidden danger, the simultaneously amplitude of scattered signal, the size of spectrum signature reflection defect and degree.
The multiple described speed or the acceleration transducer spacing that form one group of linear sensor array are 5 ~ 20 centimetres.
Adopt the prestress anchorage cable pipeline slip casting detection method of technique scheme, adopt sensor array to press close to hidden danger and detect, stronger response signal can be obtained; Analyzed by the mathematical physics feature of hidden danger response signal, avoid the multi-solution that one-channel record is explained.
Do principle see Fig. 2 and Fig. 3 to illustrate:
When hidden danger depth and place one timing, without loss of generality, with its projected position at concrete surface for initial point 0, with anchor cable pipeline ideal trend for x-axis, the direction outside perpendicular to concrete surface is z-axis positive dirction, sets up rectangular coordinate system, and sets the hidden danger degree of depth as z.If sensor array is positioned at directly over hidden danger, the position coordinates correspondingly residing for single-sensor is x.Following equation can be set up:
z
2+x
2＝s
2(1)
In formula, s is transmitted to from defect point the distance that sensing station travels for elastic wave, and it and concrete velocity of wave V and elastic wave t hourage meet relational expression:
s＝V·t(2)
(2) (1) formula of bringing into obtains:
z
2+x
2＝V
2t
2(3)
Suppose that concrete medium velocity of wave V is also steady state value, then as can be seen from equation (3), whilst on tour t and sensor coordinates position x meets Hyperbolic Equation, and hyp summit is just in time the projected position of center at concrete surface of hidden danger.
Adopt sensor array to press close to hidden danger to detect, stronger response signal can be obtained; Analyzed by the mathematical physics feature of hidden danger response signal, avoid the multi-solution that one-channel record is explained.No matter the centre whether hidden danger arranges in multiple tracks linear sensor in the projection of concrete surface, accurately location can be realized by hyperbolic curve summit.
In sum, the present invention is that one can obtain from elastic wave record and signal analysis and processing two levels improve anchor cable pipeline grouting quality testing result reliability, obtain abnormal spatial distribution characteristic by linear array transducer Received signal strength, achieve high precision grouting quality Non-Destructive Testing function.Be adapted at using in work China Democratic National Construction Association and the detection of the capital construction such as water conservancy, traffic neck prestressed concrete anchor cable pipeline grouting quality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is by simplification mathematics physics model during linear array transducer operation of the present invention.
Fig. 3 be the multiple tracks elastic wave record calculated according to Fig. 2 institute representation model time-distance curve.
Fig. 4 is that 12 road sensor linear arraies obtain analog record figure.
Fig. 5 is that 12 road sensor linear arraies obtain analog record figure.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
See Fig. 1, realize a kind of prestress anchorage cable pipeline grouting quality detection method, the linear sensor array 1 of one group of spacing 5 ~ 20 centimetres is formed by multiple speed or acceleration transducer, direction of extension perpendicular to detected anchor cable pipeline 2 is fixing in concrete surface coupling, sensor output signal is connected with multiple tracks elastic wave register instrument 5 input end by multiple signals cable 4, focus 6 excites elastic wave on anchor cable termination 3, and excitation synchronizing signal is connected to the synchronous Trigger input port of multiple tracks elastic wave register instrument 5 by signal wire 7.Focus excitation elastic wave, multiple tracks elastic wave register instrument 5 records multiple tracks elastic wave; Sensor array 1 once records one group of multiple tracks elastic wave record in concrete surface fixed coupling, linear sensor array moves in parallel a spacing along anchor cable ducts stretched direction and is coupled with concrete surface fixing, obtains the multiple tracks elastic wave record along anchor cable ducts stretched direction diverse location.
Linear sensor array is the face array of two or more linear sensor array composition.
Multiple tracks elastic wave register instrument can be multichannel seismic instrument or the ultrasonic detection instrument with Multi-path synchronous acquisition function.
Anchor cable pipeline head excitation elastic wave is transient state focus, vibroseis or stable state focus, as long as multiple sensor synchronous acquisition, the scattered signal produced by slip casting fault location arrives linearly aligned multiple sensor time and all possesses Hyperbolic Feature.
For the sensor arrangement of a certain fixed position, anchor cable pipeline head excitation focus repeatedly encourages, and realizes signal and strengthens or compacting noise, thus improve the reliability of testing result by Signal averaging mode.
Namely described multiple tracks sensor is transverse wave sensor, or Longitudinalwave sensor, and its coupling scheme of installing accordingly in coupling scheme and seismic prospecting or ultrasound examination are similar.
The signal analysis method of described prestress anchorage cable pipeline grouting quality detection method is: from the scattered signal of anchor cable pipeline slip casting defective locations point by linear sensor array by seismograph record, at that time-meet Hyperbolic Equation apart from curve, the center of hyperbolic curve vertex correspondence hidden danger, the simultaneously amplitude of scattered signal, the size of spectrum signature reflection defect and degree.
See Fig. 2 and Fig. 3, from the scattered signal of anchor cable pipeline slip casting defective locations point by linear sensor array by seismograph record, at that time-meet Hyperbolic Equation apart from curve, the center of hyperbolic curve vertex correspondence hidden danger, simultaneously the amplitude of scattered signal, spectrum signature can reflect size and the degree of defect.This is a kind of simple and efficient anchor cable pipeline anchoring quality or grouting quality detection method.
See Fig. 4 and Fig. 5, describe the concrete grammar judging slip casting defect position according to analog record.No matter hidden danger is positioned at arrangement central authorities at the projected position of concrete surface or departs to the left, in the analog record that 12 road linear array sensors obtain, the projected position of hidden danger accurately can have been pointed in position, hyp summit, interpretation is according to having 2 points at least, one be this point is hyp summit, and two is that the signal energy of this point is the strongest.This interpretation mode detects than single track will better superiority.Simultaneously owing to adopting Multi-path synchronous acquisition instrument, when sensor arrangement is motionless, focus repeatedly excites and can form multitrace seismogram superposition, thus increases the intensity of hidden danger response signal, suppresses multiple noise.
Claims (7)
1. a prestress anchorage cable pipeline slip casting detection method, one group of linear sensor array (1) is formed by multiple speed or acceleration transducer, direction of extension perpendicular to detected anchor cable pipeline (2) is fixing in concrete surface coupling, sensor output signal is connected with multiple tracks elastic wave register instrument (5) input end by multiple signals cable (4), focus (6) excites elastic wave on anchor cable termination (3), and synchronizing signal will be encouraged to be connected to the synchronous Trigger input port of multiple tracks elastic wave register instrument (5) by signal wire (7); Focus excitation elastic wave, multiple tracks elastic wave register instrument (5) record multiple tracks elastic wave; Sensor array (1) once records one group of multiple tracks elastic wave record in concrete surface fixed coupling, linear sensor array moves in parallel a spacing along anchor cable ducts stretched direction and is coupled with concrete surface fixing, obtain the multiple tracks elastic wave record along anchor cable ducts stretched direction diverse location, it is characterized in that: anchor cable pipeline head excitation elastic wave is transient state focus, vibroseis or stable state focus, as long as multiple sensor synchronous acquisition, the scattered signal produced by slip casting fault location arrives linearly aligned multiple sensor time and all possesses Hyperbolic Feature.
2. prestress anchorage cable pipeline slip casting detection method according to claim 1, is characterized in that: described linear sensor array (1) is the face array of two or more linear sensor array parallel arrangement composition.
3. prestress anchorage cable pipeline slip casting detection method according to claim 1, is characterized in that: described multiple tracks elastic wave register instrument (5) is multichannel seismic instrument or the ultrasonic detection instrument with Multi-path synchronous acquisition function.
4. realize prestress anchorage cable pipeline slip casting detection method according to claim 1, it is characterized in that: for the sensor arrangement of a certain fixed position, anchor cable pipeline head excitation focus repeatedly encourages, and realizes signal strengthen or compacting noise by Signal averaging mode.
5. realize prestress anchorage cable pipeline slip casting detection method according to claim 1, it is characterized in that: described multiple tracks sensor is transverse wave sensor, or Longitudinalwave sensor.
6. prestress anchorage cable pipeline slip casting detection method according to claim 1, it is characterized in that: its signal analysis method is: from the scattered signal of anchor cable pipeline slip casting defective locations point by linear sensor array by seismograph record, at that time-meet Hyperbolic Equation apart from curve, the center of hyperbolic curve vertex correspondence hidden danger, the simultaneously amplitude of scattered signal, the size of spectrum signature reflection defect and degree.
7. prestress anchorage cable pipeline slip casting detection method according to claim 1, is characterized in that: the multiple described speed or the acceleration transducer spacing that form one group of linear sensor array are 5 ~ 20 centimetres.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698087A (en) * | 2015-03-30 | 2015-06-10 | 河海大学常州校区 | Prestressed duct slurry stripping degree detecting device and method based on recursive singular entropy |
| CN106836320B (en) * | 2017-03-20 | 2022-07-15 | 浙江大学 | Pile bottom grouting testing device and method for testing reserved pipe bottom excitation side hole receiving wave speed |
| CN107642114B (en) * | 2017-11-09 | 2023-08-15 | 中南大学 | Pile foundation hidden danger exploration method and device before pile foundation pouring |
| CN109100421B (en) * | 2018-07-18 | 2021-11-05 | 中国电建集团中南勘测设计研究院有限公司 | Device and method for detecting grouting compactness of anchor cable in embedded mode |
| CN110007007A (en) * | 2019-04-09 | 2019-07-12 | 湖南普奇地质勘探设备研究院（普通合伙) | A kind of detection method and device of bellows slip casting plumpness |
| CN111855797B (en) * | 2020-06-29 | 2024-01-30 | 广州市高速公路有限公司 | Quick detection method and system for grouting quality of pore canal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3813580B2 (en) * | 2000-08-28 | 2006-08-23 | 三菱電機株式会社 | Structure inspection equipment |
| CN101694479A (en) * | 2009-10-16 | 2010-04-14 | 招商局重庆交通科研设计院有限公司 | Grouting quality detection method of bridge prestress pore channel |
| CN102053117A (en) * | 2009-10-28 | 2011-05-11 | 上海建科建设发展有限公司 | Method for testing grouting compactness degree of prestressed pore of bridge based on elastic-wave energy dissipation rate |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3813580B2 (en) * | 2000-08-28 | 2006-08-23 | 三菱電機株式会社 | Structure inspection equipment |
| CN101694479A (en) * | 2009-10-16 | 2010-04-14 | 招商局重庆交通科研设计院有限公司 | Grouting quality detection method of bridge prestress pore channel |
| CN102053117A (en) * | 2009-10-28 | 2011-05-11 | 上海建科建设发展有限公司 | Method for testing grouting compactness degree of prestressed pore of bridge based on elastic-wave energy dissipation rate |
Non-Patent Citations (1)
| Title |
|---|
| 裂纹声发射源定位研究及发展趋势预估初探;周洁;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20071115;第19页倒数第2段，第20页倒数第1-2段，第21页第1段 * |
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