CN203768955U - Three-dimensional foundation pile detecting device based on drill radar - Google Patents
Three-dimensional foundation pile detecting device based on drill radar Download PDFInfo
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- CN203768955U CN203768955U CN201420175604.5U CN201420175604U CN203768955U CN 203768955 U CN203768955 U CN 203768955U CN 201420175604 U CN201420175604 U CN 201420175604U CN 203768955 U CN203768955 U CN 203768955U
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Abstract
The utility model relates to the field of non-destructive detection, in particular to a three-dimensional foundation pile detecting device based on drill radar. Based on a foundation pile internally provided with a through hole, the through hole extends in the axial direction of the foundation pile. The detecting device comprises the drill radar, a dragging module and a central control module. The drill radar comprises a well internal antenna and a radar host which are connected with each other. The well internal antenna is arranged in the through hole. The dragging module is connected with the well internal antenna. The central control module is connected with the radar host. According to the technical scheme, the integrity of the foundation pile, the thickness of sediment on the bottom of the pile, and the length of a steel bar cage can be detected conveniently and fast, and detection data are provided for follow-up three-dimensional imaging.
Description
Technical field
The utility model relates to a kind of foundation pile integrity detection field, more specifically, relates to a kind of foundation pile three-dimensional detection device based on borehole radar.
Background technology
Comparatively generally sound wave transmission method, high strain and low Strain Method and core drilling method in the conventional detection method of Current Building ' foundation pile integrity detection, these several detection methods are developed faster for many years and are gradually improved, but also have many problems.Wherein sound wave transmission method, low Strain Method and high Strain Method are lossless detection methods but have larger test blind area, they can belong to two-dimensional detection technical method, the depth location of abnormal appearance can only be judged and its orientation can not be judged, and because when abnormal, being caused by pile bottom sediment or bearing stratum appears at the bottom of cannot judging in the restriction of method itself; Core drilling method is to damage detection method to belong to direct method, can reflect more intuitively the foundation pile situation at bore position place, has the problem of Points replacing surfaces with the classification of pile integrity that it passes judgment on whole stake.Simultaneously, above four kinds of detection methods all can not be described out the profile of foundation pile to be checked and its reinforcing cage, and along with the variation of construction project and the raising of quality requirement, modern architecture can design and construction technology by a lot of special foundation piles of association, to the detection of these foundation piles, often allow conventional detection means helpless, this can have a kind of effective detection method to solve these problems with regard to requiring.
It is that a kind of handle transmits and receives antenna and all puts the geological radar method of testing in boring into that borehole radar is surveyed, it transmits and receives signal underground, broken through the limitation of ground geophysical method and realized a kind of wider detection, research and application borehole radar technology make modern architecture can carry out large-scale subterranean strata detection and obtain reliable precision.In recent years, the application of borehole radar technology in engineering is more and more general, the advantage of its solving practical problems is also further obvious, the application study of borehole radar technology mainly contains the fields such as geological survey, engineering investigation, environmental survey, Hydropower Dam prospecting, detecting broken band, empty detection, karst investigation and salt deposit investigation, but in prior art, the application of borehole radar only limits to two-dimensional detection or detection.
Utility model content
The purpose of this utility model is for existing detection technique, in foundation pile detects, to have larger test blind area, to the more difficult accurate judgement in concrete size, the orientation of defect, and cannot detect accurately the problems such as situation of pile bottom sediment and reinforcing cage, a kind of foundation pile three-dimensional detection device based on borehole radar has been proposed, the optional position that utilizes the foundation pile three-dimensional detection device based on borehole radar described in the utility model can allow the well internal antenna of borehole radar pause in foundation pile axially extending bore, thus realize the three-dimensional detection to foundation pile itself and foundation pile bottom geological condition.
In order to achieve the above object, adopt following technical scheme:
A foundation pile three-dimensional detection device based on borehole radar, based on the interior foundation pile of establishing through hole, described through hole extends along foundation pile axial direction, it is characterized in that, comprising:
Borehole radar, comprises antenna and radar host computer in interconnective well, and in described well, antenna is arranged in through hole;
Traction module, is connected with antenna in well, for driving well antenna move in through hole or locate;
Central control module, is connected with radar host computer.
As a kind of specific embodiment, in described well, antenna comprises the positioning unit connecting successively, directional aerial and counterweight, described positioning unit comprises miniature control module and the micromachine being connected with miniature control module and several position sensors, and described miniature control module is connected with central control module.
As a kind of specific embodiment, described traction module comprises drive motors and for the pull rope of folding and unfolding well antenna, described pull rope one end is connected with motor output end, antenna in the connecting well of one end.
Compared with prior art, the beneficial effects of the utility model are:
The utility model by putting into well antenna in the axially extending bore of foundation pile, and by built-in pipe or be bored into bearing stratum, can realize the detection to foundation pile itself and foundation pile bottom geological condition, the utility model can be realized 360 degree directions by rotational orientation antenna or minute time-division to detection and transmit and receive data in detection process, three-dimensional one-tenth figure of later stage based on this detection can three-dimensional present pile body integrity, pile bottom sediment thickness, the information such as reinforcing cage and pile body profile and bearing stratum situation, can demonstrate more all sidedly the information of foundation pile, have a good application prospect and practical value.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of the foundation pile three-dimensional detection device based on borehole radar described in the utility model.
Fig. 2 is the top view of built-in pipe foundation pile part in Fig. 1.
Fig. 3 is the constructional drawing of antenna in the radar silo of the foundation pile three-dimensional detection device based on borehole radar described in the utility model.
In figure: 10-foundation pile; 11-reinforcing cage; 12-through hole; 20-PVC pipe; 30-bearing stratum; Antenna in 40-well; 41-positioning unit; The miniature control module of 411-; 412-micromachine; 42-directional aerial; 43-counterweight; 50-pull rope; 60-radar host computer; 70-drive motors; 80-pile bottom sediment; 100-central control module.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described further:
Referring to Fig. 1, the foundation pile three-dimensional detection device based on borehole radar described in the utility model, based on the interior foundation pile 10 of establishing through hole 12, described through hole 12 extends along foundation pile 10 axial directions, and sniffer comprises:
Borehole radar, comprise by antenna 40 and radar host computer 60 in the interconnective well of cable, in described well, antenna 40 is arranged in through hole 12, for 3-D scanning detection is carried out in space, place, and the detection data that described radar host computer 60 sends for received well antenna 40.
In described well, on antenna 40, comprise the positioning unit 41, directional aerial 42, counterweight 43 and the stube cable that connect successively from top to bottom, described positioning unit 41 at least comprises that a miniature control module 411, one are for driving the micromachine 411 of directional aerial rotation and several are for determining that directional aerial 42 is at the position sensor in through hole 12 orientation, place, wherein the controlled directional aerial 42 processed of micromachine 411 rotates at down-hole uniform speed slow, the orientable transmitting of directional aerial 42 and directional reception electromagnetic wave.
Traction module, is connected with antenna in well 40, for driving well antenna 40 in the interior movement of through hole 12 or location.
Central control module 100, is connected with radar host computer 60, for detection data the drawing three-dimensional image of receiving radar main frame 60 transmission.
Described traction module comprises drive motors 70 and for the pull rope 50 of folding and unfolding well antenna 40, described pull rope 50 one end are connected with motor output end, in the connecting well of one end, antenna 40, also be provided with side by side cable with pull rope 50, the stube cable of antenna 40 in the connecting well of cable one end, the other end is connected with radar host computer 60, for supplying electric power and allowing high speed data transfer.
In the present embodiment, foundation pile 10 is concrete pile, in foundation pile 10, be embedded with pvc pipe 20, can utilize rig along pvc pipe 20 inner part drillings, to enter the bearing stratum 30 of foundation pile 10 bottoms, in well, antenna 40 can be transferred to bearing stratum 30 spaces, place along pvc pipe 20 and boring, to facilitate 40 pairs of foundation piles of antenna, 10 bottom environment in well to survey.
Based on said structure and setting, a kind of 3 D detection method based on foundation pile three-dimensional detection device described in the utility model, has comprised the following steps:
S1 traction module puts antenna in well 40 to the depth location to be checked in foundation pile through hole 12.
In this step, drive motors 70 progressively sinks antenna 40 in well by decontroling pull rope 50, until rest on default depth location to be checked, at through hole 12 aperture positions, be also provided with the support that a pulley 90 forms pull rope 50, pull rope 50 can change lead by pulley 90.
Before foundation pile 10 is detected, carry the previous day and fill with clear water in pre-buried pvc pipe 20.
In order to form through hole in foundation pile 10, so that the passage that in the well of formation borehole radar, antenna passes unimpeded up and down also may be reached by following two kinds of modes before this step:
The one, when foundation pile 10 foundation pile construction in the middle of the foundation pile from pushing up pre-buried pvc pipe 20 to stake at the bottom of stake, pvc pipe 20 diameters should be slightly larger than 40 diameters of antenna in radar silo, at the bottom of making in well antenna 40 can arrive smoothly, must guarantee that pvc pipe 20 is excellent.
In another kind of mode, through hole 12 after can utilizing core drilling method to foundation pile 10 examinations is as the passage of antenna in well 40, for the foundation pile 10 that did not adopt core drilling method to survey, also can hole to pile bottom force holding layer 30 or other any degree of depth that needs detection along foundation pile 10 axial directions, thereby make the structure situation that detects the interior reinforcing cage 11 of foundation pile 10, pile bottom sediment 80 and bearing stratum 30 become possibility.
In S2 well, 3-D scanning detection is carried out in antenna 40 spaces, place, and detection data is sent to radar host computer 60.
In this step, in well, antenna 40 is transferred to via bottoms along the through hole 12 forming because of pre-buried pvc pipe 20 or boring in foundation pile 10, in well, antenna 40 carries out 3-D scanning detection to the surrounding space in self space, place, its detection process is to utilize an antenna transmission high-frequency wideband electromagnetic wave, and another antenna reception is from the back wave of concrete pile body rejected region or underground rock soil medium.Radar wave propagation is subject to the impact of medium electromagnetic property and geometric shape, and receiving terminal electromagnetic intensity and waveform will change thereupon.Accordingly, according to the electromagnetic two way travel time of receiving terminal (Travel Time), amplitude (Amplitude) and waveform (Waveform) data, can infer the architectural feature that pile body integrity and underground rock soil medium.
In order to obtain 360Du omnidirectional data, the detection direction that in well, antenna 40 is controlled directional aerial 42 by the interoperation between positioning unit placed on it 41 and directional aerial 42 carries out omnidirectional's detection, also can to detection mode, realize 360Du omnidirectional by a minute time-division surveys, in above-mentioned detection, all can utilize position sensor to determine the position relation of directional aerial 42, thereby further guarantee integrality and reliability that omnidirectional surveys.When surveying, in well, antenna 40 is sent to radar host computer 60 by cable by detection data.
In order to realize location, wherein a kind of more common method is the preset special reinforcing bar of certain direction (as larger in diameter) at reinforcing cage, due to the particularity of this reinforcing bar, its back wave for antenna in well 40 is different, back wave based on this differentiation can be judged the position of this reinforcing bar, and take this reinforcement location as with reference to realizing determining directional aerial 42 location statuss.
S3 traction module changes the depth location of antenna 40 in well, and in well, 3-D scanning detection is carried out in space, 40 pairs of places of antenna, and detection data is sent to radar host computer 60;
In order to realize, the diverse location of foundation pile 10 is all detected, in well the detection of antenna 40 actual be a dynamic process, it is repeatedly surveyed according to the different depth position of reserving in advance in advance, and wherein the distance of adjacent sensing point is less, and the overall structure that detection obtains foundation pile 10 is just clearer.In the present embodiment, in well, antenna 40 starts from through hole 12 bottoms to survey, thereby and by traction module at the uniform velocity in winding shaft antenna 40 change the depth location of antenna 40 in wells, make it keep certain speed at the uniform velocity to promote by certain measuring point interval, complete omnidirectional's test at each predetermined measuring point place.With the process of step S2 similarly, in well, antenna 40 obtains detection datas and also by cable, is sent to ground radar main frame 60 places.
The detection data that in S4 radar host computer 60 received wells, antenna 40 sends also sends central control module 100 to.
In this step, radar host computer 60 is converted to the form that central control module 100 can be identified after receiving the detection data that in well, antenna 40 sends, and passes to central control module 100.
The detection data drawing three-dimensional image of S5 central control module 100 based on receiving, and according to 3-D view judgement foundation pile integrality.
In the present embodiment, central control module 100 can be Industrial Personal Computer (IPC), PC or other have the computer equipment of computing function, 100 pairs of detection datas from radar host computer 60 of central control module carry out data processing, and according to reinforcing bar, dense concrete, leakiness concrete, the all rock-soil layers of stake, different medium resistivity and the difference in dielectric constant such as stake bed rock layer, analyze omnidirectional's measured data of each measuring point, profiling and whole stake 3 dimensional drawing, thereby demonstrate the profile of foundation pile, the profile of reinforcing cage, pile bottom sediment 80, bearing stratum 30 even more deep layer periphery geological condition and pile body integrity (comprises defect three-dimensional position, degree etc.), as required, can also be to existing abnormal position to carry out the same degree of depth and being extracted into figure with the section of radius.
The generation of above-mentioned 3-D view default three-dimensional Become the picture software in central control module 100 completes, it is by the coordinate of setting up in advance, and by default standard, import the data that borehole radar obtains in this coordinate, can obtain 3-D view, common technology means in view of this imaging process is this area repeat no more herein.
Based on above-mentioned 3-D view, detection personnel can also further delineate foundation pile shape, judge whether foundation pile exists defect (as segregation, folder mud, undergauge, cavity etc.), judge detect pile bottom sediment 80 thickness, the situations such as length of detection reinforcing cage, find out pile bottom force holding layer 30 or deep layer geological condition more.
Should be appreciated that, the utility model is not limited to above-mentioned embodiment, every various changes of the present utility model or modification are not departed to spirit and scope of the present utility model, if these are changed and within modification belongs to claim of the present utility model and equivalent technologies scope, the utility model also means and comprises these changes and modification.
Claims (3)
1. the foundation pile three-dimensional detection device based on borehole radar, based on the interior foundation pile of establishing through hole, described through hole extends along foundation pile axial direction, it is characterized in that, comprising:
Borehole radar, comprises antenna and radar host computer in interconnective well, and in described well, antenna is arranged in through hole;
Traction module, is connected with antenna in well, for driving well antenna move in through hole or locate;
Central control module, is connected with radar host computer.
2. the foundation pile three-dimensional detection device based on borehole radar as claimed in claim 1, it is characterized in that, in described well, antenna comprises the positioning unit connecting successively, directional aerial and counterweight, described positioning unit comprises miniature control module and the micromachine being connected with miniature control module and several position sensors, and described miniature control module is connected with central control module.
3. the foundation pile three-dimensional detection device based on borehole radar as claimed in claim 1, it is characterized in that, described traction module comprises drive motors and for the pull rope of folding and unfolding well antenna, described pull rope one end is connected with motor output end, antenna in the connecting well of one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175604.5U CN203768955U (en) | 2014-04-11 | 2014-04-11 | Three-dimensional foundation pile detecting device based on drill radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175604.5U CN203768955U (en) | 2014-04-11 | 2014-04-11 | Three-dimensional foundation pile detecting device based on drill radar |
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| Publication Number | Publication Date |
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| CN203768955U true CN203768955U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420175604.5U Expired - Fee Related CN203768955U (en) | 2014-04-11 | 2014-04-11 | Three-dimensional foundation pile detecting device based on drill radar |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898931A (en) * | 2014-04-11 | 2014-07-02 | 广州建设工程质量安全检测中心有限公司 | Three-dimensional foundation pile detection device and method based on borehole radar |
| CN109115884A (en) * | 2018-09-27 | 2019-01-01 | 广州市建筑科学研究院有限公司 | A kind of foundation pile integrity detection system based on sound wave transmission method |
| CN111456121A (en) * | 2020-04-16 | 2020-07-28 | 成都农业科技职业学院 | Method for nondestructive detection of bridge pile foundation defects |
-
2014
- 2014-04-11 CN CN201420175604.5U patent/CN203768955U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898931A (en) * | 2014-04-11 | 2014-07-02 | 广州建设工程质量安全检测中心有限公司 | Three-dimensional foundation pile detection device and method based on borehole radar |
| CN109115884A (en) * | 2018-09-27 | 2019-01-01 | 广州市建筑科学研究院有限公司 | A kind of foundation pile integrity detection system based on sound wave transmission method |
| CN111456121A (en) * | 2020-04-16 | 2020-07-28 | 成都农业科技职业学院 | Method for nondestructive detection of bridge pile foundation defects |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20170411 |
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| CF01 | Termination of patent right due to non-payment of annual fee |