CN103898931B - A kind of base stake three-dimensional detection device based on boring radar and base stake 3 D detection method - Google Patents
A kind of base stake three-dimensional detection device based on boring radar and base stake 3 D detection method Download PDFInfo
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Abstract
The present invention relates to a kind of base stake three-dimensional detection device based on boring radar and base stake 3 D detection method, described detection device comprises the base stake three-dimensional detection device based on boring radar, based on the interior base stake establishing through hole, described through hole extends along base stake axial direction due, comprise boring radar, traction module and center-control module, described boring radar comprises antenna and radar host computer in interconnective well, described radar host computer and center-control model calling, described detection method comprises antenna in the well of location, three dimension scanning detects, displacement detection, transmission data, generate the steps such as 3-D view, adopt technical solutions according to the invention can realize foundation pile integrity, the detection of pile bottom sediment thickness and length of reinforcing cage, and 3-D view can be obtained, detection personnel is allowed intuitively to arrive base stake and the situation of base stake periphery.
Description
Technical field
The present invention relates to a kind of foundation pile integrity detection field, more specifically, it relates to a kind of base stake three-dimensional detection device based on boring radar and the base stake 3 D detection method based on this device.
Background technology
Comparatively generally sound wave transmission method, Large strain and low strain dynamic method and core drilling method in the conventional sense method of existing architecture foundation pile integrity detection, this several detection method is developed faster for many years and is gradually improved, but also there is many problems. Wherein sound wave transmission method, low strain dynamic method and Large strain method are lossless detection method but there is bigger testing blind zone, they can belong to two-dimensional detection technological method, the depth location of abnormal appearance can only be judged and its orientation can not be judged, and when occurring abnormal at the bottom of the restriction of method itself cannot be judged, cause by pile bottom sediment or bearing stratum; Core drilling method damages detection method to belong to direct method, can reflect the base stake situation at bore position place more intuitively, passes judgment on, with it, the problem that whole pile integrity classification exists Points replacing surfaces. Simultaneously, above four kinds of detection methods all can not describe out the profile of base stake to be checked and its Steel Reinforcement Cage, and along with the variation of construction project and the raising of specification of quality, the Pile integrity that modern architecture meeting association is much special and construction technology, often allowing conventional sense means helpless the detection of these base stakes, this just requires to have a kind of effective detection method to address these problems.
Boring radar detection is a kind of the geological radar testing method launched and receiving antenna is all put in boring, it launches signal and Received signal strength in underground, breaching the limitation of ground earth physics method and realize a kind of wider detection, investigation and application boring Radar Technology makes modern architecture can carry out subterranean strata on a large scale to detect and obtain reliable precision. In recent years, the application of boring Radar Technology in engineering is more and more general, the advantage of its solving practical problems is also further obvious, the applied research of boring Radar Technology mainly contains the fields such as geological survey, engineering prospecting, environmental surveys, the prospecting of water power dam, detecting broken band, empty detection, karst region investigation and salt deposit investigation, but in prior art, the application of boring radar is only limitted to two-dimensional detection or detection.
Summary of the invention
It is an object of the invention in pile detection, to there is bigger testing blind zone for existing detection technique, to concrete size, the more difficult accurate judgement in orientation of defect, and the problem such as situation of pile bottom sediment and Steel Reinforcement Cage cannot be detected accurately, it is proposed that a kind of base stake three-dimensional detection device based on boring radar and a kind of base stake 3 D detection method.
Utilize the base stake three-dimensional detection device based on boring radar of the present invention can allow boring radar well in antenna pause the optional position in base stake axially extending bore, thus realize the three-dimensional detection to geological condition bottom base stake itself and base stake.
In order to achieve the above object, following technical scheme is adopted:
Based on a base stake three-dimensional detection device for boring radar, establishing the base stake of through hole in comprising, described through hole extends along base stake axial direction due, comprising:
Boring radar, comprises antenna and radar host computer in interconnective well, and in described well, antenna is arranged in through hole, and for space, place is carried out three dimension scanning detection, described radar host computer is used for the detection data that in received well, antenna sends;
Traction module, is connected with antenna in well, for driving antenna in well move in through hole or locate;
Center-control module, is connected with radar host computer, for receive radar host computer transmission detection data and drawing three-dimensional image.
As a kind of specific embodiment, in described well, antenna comprises the positioning unit connected successively, directive antenna and counterweight, the miniature motor that described positioning unit comprises miniature control unit, some position transducers are connected with miniature control unit, described miniature control unit and center-control model calling, wherein:
Miniature control unit, for controlling the rotation of miniature motor;
Miniature motor, for driving directive antenna to rotate vertically;
Position transducer, for determining the orientation of directive antenna in through hole;
Directive antenna, for beam transmission and directive reception hertzian wave;
Described through hole runs through bottom base stake, is connected with bearing stratum.
As a kind of specific embodiment, described traction module comprises drive-motor and the traction rope for antenna in folding and unfolding well, and described traction rope one end is connected with motor output end, antenna in the connecting well of one end.
Utilize base stake 3 D detection method of the present invention can realize the detection to foundation pile integrity, pile bottom sediment thickness, Steel Reinforcement Cage and stake body profile and bearing stratum, and 3-D view can be obtained, allow detection personnel intuitively arrive base stake and the situation of base stake periphery.
In order to achieve the above object, following technical scheme is adopted:
Based on a base stake 3 D detection method for the base stake three-dimensional detection device based on boring radar mentioned above, comprise the following steps:
Antenna in well is put to the depth location to be checked in base stake through hole by S1 traction module;
In S2 well, space, place is carried out three dimension scanning detection by antenna, and detection data is sent to radar host computer;
S3 traction module changes the depth location of antenna in well, and in well, space, place is carried out three dimension scanning detection by antenna, and detection data is sent to radar host computer;
In S4 radar host computer received well antenna send detection data and send center-control module to;
S5 center-control module is based on the detection data drawing three-dimensional image received, and judges foundation pile integrity and profile thereof according to 3-D view, discloses at the bottom of stake and bearing stratum situation.
As a kind of specific embodiment, in described step S3, it is at the uniform velocity antenna in winding shaft between adjacent measuring point spacing that traction module changes the mode of the depth location of antenna in well.
As a kind of specific embodiment, before described step S1, also comprise along the step of base stake axial direction due boring to form through hole.
As a kind of specific embodiment, before described step S1, when being also included in foundation pile construction, bury pvc pipe in advance to form the step of through hole vertically.
As a kind of specific embodiment, in described step S2 or S3, in described well, antenna realizes 360 degree of omnidirectional's detections by rotational orientation sky line traffic control detection direction.
As a kind of specific embodiment, in described step S2 or S3, in described well, antenna realizes 360 degree of omnidirectional's detections by point time-division to detection mode.
Compared with prior art, the useful effect of the present invention is:
The present invention by putting into well antenna in the axially extending bore of base stake, and by burying pipe in advance or be bored into bearing stratum, the detection to geological condition bottom base stake itself and base stake can be realized, the present invention can realize 360 degree of directions by rotational orientation antenna or point time-division to detection in detection process and launches and receive data, and the later stage three-dimensional one-tenth figure based on this detection three-dimensional can present pile body integrity, pile bottom sediment thickness, Steel Reinforcement Cage and the information such as stake body profile and bearing stratum situation. The technical scheme of the present invention have resolving power height, immunity from interference strong, the features such as three-dimensional detection can be carried out, it is possible to demonstrate the information of base stake more comprehensively, have a good application prospect and practical value.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of the base stake three-dimensional detection device based on boring radar of the present invention.
Fig. 2 is the vertical view burying pipe base stake part in Fig. 1 in advance.
Fig. 3 be the base stake three-dimensional detection device based on boring radar of the present invention radar well in the structural map of antenna.
In figure: 10-base stake; 11-Steel Reinforcement Cage; 12-through hole; 20-PVC manages; 30-bearing stratum; Antenna in 40-well; 41-positioning unit; The miniature control unit of 411-; The miniature motor of 412-; 42-directive antenna; 43-counterweight; 50-traction rope; 60-radar host computer; 70-drive-motor; 80-pile bottom sediment; 100-center-control module.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described:
See Fig. 1, the base stake three-dimensional detection device based on boring radar of the present invention, based on the interior base stake 10 establishing through hole 12, described through hole 12 extends along base stake 10 axial direction due, and means of detection comprises:
Boring radar, comprises antenna 40 and radar host computer 60 in the well being electrically connected to each other, and in described well, antenna 40 is arranged in through hole 12, for space, place is carried out three dimension scanning detection, and the detection data that described radar host computer 60 sends for antenna in received well 40.
Described well comprises on antenna 40 positioning unit 41, directive antenna 42, counterweight 43 and the tie cable that connect successively from top to bottom, described positioning unit 41 at least comprises a miniature control unit 411, for the miniature motor 412 that drives directive antenna to rotate and some for determining the position transducer in directive antenna 42 orientation, place in through hole 12, miniature control unit 411 is connected with center-control module 100, wherein the controlled directive antenna 42 processed of miniature motor 412 rotates at down-hole uniform speed slow, and directive antenna 42 can beam transmission and directive reception hertzian wave.
Traction module, is connected with antenna in well 40, for driving antenna 40 mobile or location in through hole 12 in well.
Center-control module 100, is connected with radar host computer 60, for receive radar host computer 60 transmit detection data and drawing three-dimensional image.
Described traction module comprises drive-motor 70 and the traction rope 50 for antenna 40 in folding and unfolding well, described traction rope 50 one end is connected with motor output end, antenna 40 in the connecting well of one end, cable also it is provided with side by side with traction rope 50, the tie 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 allow high speed data transmission.
In the present embodiment, base stake 10 is concrete pile, pvc pipe 20 it is embedded with in base stake 10, rig can be utilized to enter the bearing stratum 30 bottom base stake 10 along pvc pipe 20 inner part drilling, then in well, antenna 40 can transfer to space, bearing stratum 30 place along pvc pipe 20 and boring, to facilitate antenna 40 in well to be detected by environment bottom base stake 10.
Based on said structure and setting, base stake 3 D detection method of the present invention, has comprised the following steps:
Antenna in well 40 is put to the depth location to be checked in base stake through hole 12 by S1 traction module.
In this step, by decontroling, traction rope 50 makes antenna 40 in well progressively sink to drive-motor 70, until stopping at default depth location to be checked, being also provided with a pulley 90 at through hole 12 aperture position and forming the support to traction rope 50, traction rope 50 can change traction direction by pulley 90.
Before base stake 10 is detected, carry and to burying in advance, pvc pipe 20 fills clear water the day before yesterday.
In order to form through hole in base stake 10, to form the passage that in the well of boring radar, antenna passes unimpeded up and down, also can reach by following two kinds of modes before this step:
One is bury pvc pipe 20 from the bottom of stake in advance to stake top when base stake 10 foundation pile construction in the middle of the base stake, and pvc pipe 20 diameter should be slightly bigger than antenna in radar well 40 diameter, at the bottom of making antenna 40 in well can arrive smoothly, it is necessary to ensure that pvc pipe 20 stands intact.
In another kind of mode, core drilling method can be utilized the passage of the through hole 12 after base stake 10 examinations as antenna in well 40, for the base stake 10 not adopting core drilling method to detect, the degree of depth that can also detect along the boring of base stake 10 axial direction due to any needs of pile bottom force holding layer 30 or other, so that the structure situation of Steel Reinforcement Cage 11, pile bottom sediment 80 and bearing stratum 30 becomes possibility in detection base stake 10.
In S2 well, space, antenna 40 place carries out three dimension scanning detection, and detection data is sent to radar host computer 60.
In this step, in well, antenna 40 transfers to via bottoms because burying the through hole 12 of pvc pipe 20 or boring formation in advance in base stake 10, then in well, the surrounding space in self space, place is carried out three dimension scanning detection by antenna 40, its detection process utilizes an antenna to launch high-frequency wideband hertzian wave, and another antenna receives from the reflection wave of concrete pile body rejected region or underground rock soil medium. The propagation of radar wave is subject to the impact of medium electromagnetic property and geometric shape, and receiving end electromagnetic intensity and waveform will change thereupon. Accordingly, according to the two way travel time (TravelTime) of receiving end hertzian wave, amplitude (Amplitude) and waveform (Waveform) data, it is possible to deduce pile body integrity and the constitutional features of underground rock soil medium.
In order to obtain 360 degree of omnidirectional's data, in well, antenna 40 carries out omnidirectional's detection by the detection direction of the cooperation action control directive antenna 42 between positioning unit 41 placed on it and directive antenna 42,360 degree of omnidirectional's detections can also be realized to detection mode by point time-division, in above-mentioned detection, position transducer all can be utilized to determine the position relation of directive antenna 42, thus ensure integrity and the reliability of omnidirectional's detection further. While detection, in well, detection data is sent to radar host computer 60 by cable by antenna 40.
In order to realize location, it is wherein a kind of that to compare common method be a preset special reinforcing bar (as diameter is bigger) in certain direction of Steel Reinforcement Cage, then due to the singularity of this reinforcing bar, it is different for the reflection wave of antenna in well 40, the position of this reinforcing bar can be judged based on the reflection wave of this differentiation, and taking this reinforcement location as with reference to realizing the determination to directive antenna 42 position state.
S3 traction module changes the depth location of antenna 40 in well, and in well, space, place is carried out three dimension scanning detection by antenna 40, and detection data is sent to radar host computer 60;
All detect to realize the different positions to base stake 10, in well, the detection of antenna 40 is actual is a dynamic process, it repeatedly detects according to the different depth position reserved in advance in advance, and wherein the distance of adjacent detector point is more little, and the one-piece construction that detection obtains base stake 10 is more clear. In the present embodiment, in well, antenna 40 detects from bottom through hole 12, and by antenna 40 in traction module at the uniform velocity winding shaft thus change the depth location of antenna 40 in well so that it is the speed keeping certain at the uniform velocity promotes by certain measuring point interval, completes omnidirectional's test at each predetermined measuring point place. With the process of step S2 similarly, in well, antenna 40 obtains detection data and is also sent to ground radar host computer 60 place by cable.
In S4 radar host computer 60 received well antenna 40 send detection data and send center-control module 100 to.
In this step, radar host computer 60 is converted to the form that center-control module 100 can identify after receiving the detection data that in well, antenna 40 sends, and passes to center-control module 100.
S5 center-control module 100 is based on the detection data drawing three-dimensional image received, and judges foundation pile integrity according to 3-D view.
In the present embodiment, center-control module 100 can be industrial computer, PC or other computer equipments with computing function, detection data from radar host computer 60 is carried out data processing by center-control module 100, and according to reinforcing bar, air free concrete, eakiness concrete, the all rock-soil layers of stake, different media resistivity and the difference in dielectric constant such as stake bed rock layer, analyze omnidirectional's measured data of each measuring point, profile drawing figure and whole stake 3 dimensional drawing, thus demonstrate the profile of base stake, the profile of Steel Reinforcement Cage, pile bottom sediment 80, even more deep layer periphery geological condition and pile body integrity (comprise defect three-dimensional position to bearing stratum 30, degree etc.), as required, the same degree of depth can also be carried out and the section with radius is extracted into figure to existing abnormal position.
The three-dimensional Become the picture software by presetting in center-control module 100 that generates of above-mentioned 3-D view completes, its coordinate by setting up in advance, and in this coordinate, the data of boring radar acquisition are imported by the standard preset, 3-D view can be obtained, in view of this imaging process is the common technology means of this area, repeat no more herein.
Based on above-mentioned 3-D view, detection personnel also can realize delineating further base stake shape, judge base stake whether existing defects (such as segregation, folder mud, undergauge, cavity etc.), the thickness judging detection pile bottom sediment 80, the situation such as length detecting Steel Reinforcement Cage, find out pile bottom force holding layer 30 or more deep geologic situation.
Should be appreciated that, the utility model is not limited to above-mentioned enforcement mode, every various change of the present utility model or modification are not departed from spirit and scope of the present utility model, if these are changed and modification belongs within claim of the present utility model and equivalent technologies scope, then the utility model also means to comprise these change and modification.
Claims (8)
1. based on a base stake three-dimensional detection device for boring radar, establishing the base stake of through hole in comprising, described through hole extends along base stake axial direction due, it is characterised in that, comprising:
Boring radar, comprises antenna and radar host computer in interconnective well, and in described well, antenna is arranged in through hole, and for space, place is carried out three dimension scanning detection, described radar host computer is used for the detection data that in received well, antenna sends;
Traction module, is connected with antenna in well, for driving antenna in well move in through hole or locate;
Center-control module, is connected with radar host computer, for receive radar host computer transmission detection data and drawing three-dimensional image;
In described well, antenna comprises the positioning unit connected successively, directive antenna and counterweight, the miniature motor that described positioning unit comprises miniature control unit, some position transducers are connected with miniature control unit, described miniature control unit and center-control model calling, wherein:
Miniature control unit, for controlling the rotation of miniature motor;
Miniature motor, for driving directive antenna to rotate vertically;
Position transducer, for determining the orientation of directive antenna in through hole;
Directive antenna, for beam transmission and directive reception hertzian wave;
Described through hole runs through bottom base stake, is connected with bearing stratum.
2. as claimed in claim 1 based on the base stake three-dimensional detection device of boring radar, it is characterized in that, described traction module comprises drive-motor and the traction rope for antenna in folding and unfolding well, and described traction rope one end is connected with drive-motor output terminal, antenna in the connecting well of one end.
3. one kind based on described in claim 1 based on the base stake 3 D detection method of base stake three-dimensional detection device of boring radar, it is characterised in that, comprise the following steps:
Antenna in well is put to the depth location to be checked in base stake through hole by S1 traction module;
In S2 well, space, place is carried out three dimension scanning detection by antenna, and detection data is sent to radar host computer;
S3 traction module changes the depth location of antenna in well, and in well, space, place is carried out three dimension scanning detection by antenna, and detection data is sent to radar host computer;
In S4 radar host computer received well antenna send detection data and send center-control module to;
S5 center-control module is based on the detection data drawing three-dimensional image received, and judges foundation pile integrity and profile thereof according to 3-D view, discloses at the bottom of stake and bearing stratum situation.
4. base stake 3 D detection method as claimed in claim 3, it is characterised in that, in described step S3, it is at the uniform velocity antenna in winding shaft between adjacent measuring point spacing that traction module changes the mode of the depth location of antenna in well.
5. base stake 3 D detection method as claimed in claim 3, it is characterised in that, before described step S1, also comprise along the step of base stake axial direction due boring to form through hole.
6. base stake 3 D detection method as claimed in claim 3, it is characterised in that, before described step S1, bury pvc pipe when being also included in foundation pile construction vertically in advance to form the step of through hole.
7. base stake 3 D detection method as claimed in claim 3, it is characterised in that, in described step S2 or S3, in described well, antenna realizes 360 degree of omnidirectional's detections by rotational orientation sky line traffic control detection direction.
8. base stake 3 D detection method as claimed in claim 3, it is characterised in that, in described step S2 or S3, in described well, antenna realizes 360 degree of omnidirectional's detections by point time-division to detection mode.
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| CN201410145306.6A CN103898931B (en) | 2014-04-11 | 2014-04-11 | A kind of base stake three-dimensional detection device based on boring radar and base stake 3 D detection method |
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