CN107036578A - Foundation pile hole quality detecting system and its detection method - Google Patents
Foundation pile hole quality detecting system and its detection method Download PDFInfo
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- CN107036578A CN107036578A CN201710419727.7A CN201710419727A CN107036578A CN 107036578 A CN107036578 A CN 107036578A CN 201710419727 A CN201710419727 A CN 201710419727A CN 107036578 A CN107036578 A CN 107036578A
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- G—PHYSICS
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- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
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Abstract
The invention discloses a kind of foundation pile hole quality detecting system and its detection method, including probe, vertical lift device；Probe includes being used for the foundation pile pore-forming radial level is provided with boatswain chair in the housing being lifted in foundation pile pore-forming and the laser range finder being horizontally set on towards four direction in housing, housing top wall；Vertical lift device includes being arranged on the depth counter at foundation pile pore-forming aperture on support；Foundation pile pore-forming mean radius detection method is：First laser rangefinder, which is pointed to, is set to y-axis forward direction, and second laser rangefinder, which is pointed to, is set to x-axis forward direction, and the 3rd laser range finder, which is pointed to, is set to y-axis negative sense, and the 4th laser range finder, which is pointed to, is set to x-axis negative sense, and vertical plumb line sets up three-dimensional cartesian coordinate system for z-axis（X, y, z）, the coordinate that four laser range finders are determined meets formula.The invention has the advantages that taking non-mechanical to detect vertical shaft tilt data, lightweight, easy to carry, detection efficiency and accuracy of detection are high.
Description
Technical field
The present invention relates to foundation pile drilled-hole inspecting field, more particularly, to foundation pile hole quality detecting system, the present invention is also related to
And the detection method of the foundation pile hole quality detecting system.
Background technology
With the fast development of China's economy, building construction technology has also obtained quick development.Pile foundation has become
The main foundation form of current building body, and during pile foundation construction, cast-in-situ bored pile belongs to underground concealed engineering, there is many
Geologic(al) factor and human factor influence pile quality, it is impossible to fully transparent monitoring intuitively is carried out to its whole work progress, into
The quality of hole quality directly influences the pile quality after concrete cast.Such as：The aperture of stake holes is less than normal then so that the side of pile
Frictional resistance, pile top end bearing capacity are reduced, the bearing capacity reduction of whole stake;And for example：Stake holes top is expanding will to cause pile upper side
Resistance increases so that bottom collateral resistance can not play a role completely, while the concrete of single pile pours fluence increase, expense is improved;
For another example：Stake holes deflection changes stake and vertically carries mechanical characteristic to a certain extent, weakens effective performance of pile bearing capacity,
And it is also easy to produce the problems such as steel reinforcement cage hangs difficulty, collapse hole, thickness of protection tier deficiency.Therefore, it is equipped with corresponding inspection
Measurement equipment carries out detection to its links and is very important.Hole quality detection can give necessary prison to drilling construction
Superintend and direct and instruct, now have become an indispensable important step during bored pile construction.Meanwhile, hole diameter data pair
In comprehensive descision lithology, explain other logs and calculate cementing concrete amount be all very important.
Existing instrument is typically made up of two parts：A part is the down-hole mechanical structure for reflecting well radius variations, this part bag
Include the conversion equipment for mechanical displacement being become electric signal；Common caliper has three or four arms, last under the action of the spring
End, which is opened, is close to the borehole wall, with the change of hole diameter, and the end of arm is also with opening or closing up, while driving potentiometer slider to move
Dynamic, the then change of hole diameter has reformed into the change of resistance value, when being powered by cable to potentiometer, electric between the resistance of change
Potential difference just reflects the change of hole diameter；Another part is surface seismic records part, record potential difference change, is carved in advance by hole caliper
Degree, this change is exactly hole diameter size.Above-mentioned diameter tester is contact, and its equipment is heavy, error is larger, it has not been convenient to take
Band, it is impossible to meet the requirement of foundation pile dry hole hole quality quick detection.
The content of the invention
Present invention aims at provide a kind of lightweight, easy to carry, detection efficiency and the high foundation pile pore-forming of accuracy of detection
Quality detecting system.Another object of the present invention is the detection method for providing the foundation pile hole quality detecting system.
To achieve the above object, the present invention takes following technical proposals：
Foundation pile hole quality detecting system of the present invention, foundation pile hole quality detecting system, including probe, vertical lift dress
Put；
The probe includes：For the housing being lifted in the foundation pile pore-forming, the loading plate in the housing is horizontally set on,
Laser range finder is respectively arranged with towards four direction on the loading plate, is corresponded on the side wall of housing each described sharp
Laser hole is offered respectively at the Laser emission window position of optar；Set in housing top wall along the foundation pile pore-forming radial level
It is equipped with level on boatswain chair, the boatswain chair and offers and housing perpendicular bisector is symmetrical with chute, boatswain chair is arranged at intervals with two fixed pulleys
Component；Single-chip microcomputer and radio receiving transmitting module are provided with housing, battery is provided with the bottom wall central position of housing, institute
State power input of the output end of battery respectively with the single-chip microcomputer, radio receiving transmitting module and laser range finder to be connected, four
It is connected after the control signal input of individual laser range finder is parallel with one another with the control signal output of single-chip microcomputer, each Laser Measuring
The data signal output of distance meter is connected with the data signal input of single-chip microcomputer respectively, and single-chip microcomputer is by serial line interface and wirelessly
Transceiver module is communicated to connect；
The vertical lift device includes：It is arranged on depth counter at the foundation pile pore-forming aperture on support, winch, data
Collector；The reel steel wire ropes of the winch bypass the counter wheel of the depth counter, described two fixed pulley assemblies successively
Two fixed pulleys after be fixedly connected with the support；The data acquisition unit and the radio receiving transmitting module that is arranged in housing without
Line is communicated to connect, and the length data signal input of data acquisition unit and the length data signal output end of depth counter connect
Connect, the communication interface of data acquisition unit is connected with mobile terminal wire communication.
Described two fixed pulley assemblies are arranged on the pulley at the top of the pulley support by pulley support and by rotating shaft
Constitute, the bottom of two pulley supports is connected by the bolt through the chute with the boatswain chair respectively.
The housing is four-prism shape structure, and the laser range finder is phase laser distance measurement instrument, described mobile whole
Hold as laptop computer.
The detection method of foundation pile hole quality detecting system of the present invention, is carried out as steps described below：
Ensure that probe verticality in the foundation pile pore-forming is lifted when the first step, measurement, while ensureing four phases
The sensing of formula laser range finder is constant, and the depth value of test point is obtained by the depth counter；Probe collection data be
Four phase laser distance measurement instrument zero-base points of certain moment are to the distance of hole wall, the number that the mobile terminal respectively gathers the moment
According to the zero-base point for being recorded as corresponding four phase laser distance measurement instrument to center probe point distance, center probe point is obtained to hole
Four of wall are apart from d1、d2、d3、d4；
Second step, the detection and analysis of foundation pile pore-forming mean radius and computational methods are：
Four phase laser distance measurement instrument are arranged on nylon loading plate towards four direction clockwise, at depth zero set with
Center probe point is the origin of coordinates 0, and first phase formula laser range finder, which is pointed to, is set to y-axis forward direction, second phase formula laser ranging
Instrument, which is pointed to, is set to x-axis forward direction, and third phase formula laser range finder points to and is set to y-axis negative sense, and the 4th phase laser distance measurement instrument refers to
To x-axis negative sense is set to, vertical plumb line is that z-axis sets up three-dimensional cartesian coordinate system（X, y, z）, because probe is lifted along plumb line,
So the center point coordinate popped one's head at different depth is（0,0, z）；According to the ingenious setting of three-dimensional cartesian coordinate system, four phases
The coordinate value that formula laser range finder is determined has certainty, in a certain depth, what four phase laser distance measurement instrument were determined
Coordinate is respectively, every bit satisfaction
Formula, r is the radius of the foundation pile pore-forming depth, and x, y justify for foundation pile pore-forming
The coordinate of upper any point, x0、y0The centre coordinate justified for foundation pile pore-forming；
Select first phase formula laser range finder, second phase formula laser range finder, third phase formula laser range finder composition following
Equation group：
First equation is subtracted each other with the 3rd equation and obtained：, detected due to popping one's head in hole,
In the case where not moving the origin of coordinates 0 and probe holding vertically, x in second equation0Necessarily it is less than d2, so
（d2-x0）It is certain to be more than zero, by y0Substitute into and obtain uniquely solving x in second equation0, and then the radius more than zero can be tried to achieve
R, obtains centre coordinate（x0,y0,z）With radius r；
3rd step, the combination for clicking according to 4 at 3 points, select first, second, third phase laser distance measurement instrument, the first, second, the 4th
Phase laser distance measurement instrument, second, third, the measurement data of the 4th phase laser distance measurement instrument is according to second step methods described group
Into three different equation groups, and 3 centre coordinates in hole can be tried to achieve using the calculation and analysis methods described in second step（x0,
y0,z）With radius r；
4th step, the centre coordinate for trying to achieve 3 times（x0,y0,z）Averaged with radius r and draw mean center point（xp,yp,z）
With mean radius rpIt is used as the centre coordinate and radius in hole；Mean radius rpAnalysis is as shown in Figure 5 with computational methods FB(flow block)；
5th step, the analysis of foundation pile pore-forming inclination measurement are with computational methods：
The centre coordinate tried to achieve at foundation pile pore-forming depth zero is denoted as with radius（xp0,yp0,z0）, on the basis of depth zero, by public affairs
FormulaThe tilting value in hole is calculated, all tilting values are that can plot a depth-inclination song
Line；xp0、yp0For in the central coordinate of circle that depth z is the foundation pile pore-forming circle that zero position calculating is obtained.
When a certain depth of the foundation pile pore-forming is eccentric larger（Such as stake in 800mm apertures, when eccentric distance reaches 250mm
Adjustment is needed, calculation formula is D/2-d/2, wherein D is stake diameter, d is this probe equivalent diameter 300mm）, due to the probe
Tool has the dimensions, and probe will be attached to a certain side opening wall, before probe is attached to the hole wall, and that is popped one's head in described in adjustment hanging sets
It is standby, probe is moved to the central point positioned at this depth hole, then new with the foundation of second step methods described
Three-dimensional cartesian coordinate system；The formula that the hole centre coordinate newly tried to achieve is corrected to former coordinate system is：
So as to complete eccentric correction of the probe in the foundation pile pore-forming depth.
The invention has the advantages that take non-mechanical detect vertical shaft tilt data, it is lightweight, it is easy to carry, detection efficiency and
Accuracy of detection is high, the foundation pile dry hole hole quality detection for the on-the-spot test that is particularly suitable for use in.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of probe of the present invention.
Fig. 3 .1 are the horizontal layout schematic diagrames of four phase laser distance measurement instrument of the invention.
Fig. 3 .2 are Fig. 3 .1 A-A to structural representation.
Fig. 4 is the present invention looks up structural representation of probe of the present invention.
Fig. 5 is mean radius detection and analysis of the present invention and the flow chart of computational methods.
Embodiment
Embodiments of the invention are elaborated below in conjunction with the accompanying drawings, the present embodiment using technical solution of the present invention before
Put and implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to down
State embodiment.
As Figure 1-4, foundation pile hole quality detecting system of the present invention, including probe, vertical lift device；
The probe includes：For the housing 2 for the four-prism shape structure being lifted in the foundation pile pore-forming 1, it is horizontally set on
On nylon loading plate 3 in housing 2, nylon loading plate 3 towards four direction be respectively arranged with phase laser distance measurement instrument 4.1,
4.2nd, 4.3,4.4, corresponding to difference at the Laser emission window position of each phase laser distance measurement instrument on the side wall of housing 2
Offer laser hole 5；The radial level of foundation pile pore-forming 1 is provided with level on boatswain chair 6, boatswain chair 6 on the roof of housing 2 and offers chute
7, housing perpendicular bisector is symmetrical with boatswain chair 6 and is arranged at intervals with two fixed pulley assemblies, and two fixed pulley assemblies are by pulley support 8
Constituted with the pulley 9 that the top of pulley support 8 is arranged on by rotating shaft, the bottom of two pulley supports 8 is respectively by through chute 7
Clamping screw 10 be connected with boatswain chair 6；Single-chip microcomputer 11 and radio receiving transmitting module are provided with housing 2, positioned at the bottom wall following table of housing 2
Center position in the cavity of face is fixed with battery 13 by metal tie rod 12, the output end of battery 13 respectively with single-chip microcomputer
11st, the power input connection of radio receiving transmitting module and four phase laser distance measurement instrument 4.1,4.2,4.3,4.4, four phases
The control signal of the control signal input rear and single-chip microcomputer 11 parallel with one another of formula laser range finder 4.1,4.2,4.3,4.4 is exported
End connection, the number of the data signal outputs of four phase laser distance measurement instrument 4.1,4.2,4.3,4.4 respectively with single-chip microcomputer 11
Connected according to signal input part, single-chip microcomputer 11 is communicated to connect by serial line interface and radio receiving transmitting module；
The vertical lift device includes：It is arranged on the depth counter on support 14 at the aperture of foundation pile pore-forming 1（Brand：Its instrument
Hypo；Model：TY-26；Name of product：Band depth counts pulley winch display；Specification：Special take-up unwrapping wire pulley winch）、
Winch 15, data acquisition unit 16；The reel steel wire ropes 17 of winch 15 bypass the counter wheel 18 of depth counter, two fixed cunnings successively
It is fixedly connected after two fixed pulleys 9 of wheel assembly with support 14；Data acquisition unit 16 and the wireless receiving and dispatching mould being arranged in housing 2
Block wireless communication connection, the length data signal input of data acquisition unit 16 and the length data signal of depth counter are exported
End connection, the communication interface of data acquisition unit 16 is connected with the wire communication of laptop computer 19.
Probe of the present invention takes non-contacting phase laser measurement, therefore probe abrasion is small, and measurement is reliable, precision
It is high.Probe top two ends set the battery fixed at two fixed pulley assemblies, with bottom centre position so that the center of gravity of probe
Positioned at lower central position, the directionality of probe and the problem of perpendicularity are solved.Probe data takes wireless communication mode, no
It is convenient only to be brought to measurement operation, also eliminates interference of the wire transmission line in operation to probe orientation and perpendicularity and asks
Topic.Depth counter makes the depth data of consecutive variations be discretized into highdensity numeral without fast automatic transmission data are asked
Depth data.The mentality of designing of fictitious host computer, acquisition software is arranged in removable computer, substantially increases the versatility of equipment,
Be conducive to popularization and application.
As shown in Fig. 1, Fig. 3 .1, Fig. 5, the detection method of foundation pile hole quality detecting system of the present invention, according to following
Step is carried out：
Ensure that probe verticality in foundation pile pore-forming is lifted when the first step, measurement, while ensureing four phase laser distance measurement instrument
4.1st, 4.2,4.3,4.4 sensing is constant, and the depth value of test point is obtained by depth counter；The data of probe collection are certain
The zero-base point of four phase laser distance measurement instrument of moment 4.1,4.2,4.3,4.4 to hole wall distance, laptop computer respectively by this when
It is the zero-base point of corresponding four phase laser distance measurement instrument 4.1,4.2,4.3,4.4 to center probe to carve the data record of collection
Point distance, obtains center probe point to four of hole wall apart from d1、d2、d3、d4；
Second step, the detection and analysis of foundation pile pore-forming mean radius and computational methods are：
Four phase laser distance measurement instrument 4.1,4.2,4.3,4.4 are arranged on nylon loading plate 3 towards four direction clockwise,
Set at depth zero using center probe point as the origin of coordinates 0, the sensing of first phase formula laser range finder 4.1 is being set to y-axis just
To the sensing of second phase formula laser range finder 4.2 is set to x-axis forward direction, and the sensing of third phase formula laser range finder 4.3 is set to
Y-axis negative sense, the sensing of the 4th phase laser distance measurement instrument 4.4 is set to x-axis negative sense, and vertical plumb line is that z-axis sets up three-dimensional right angle
Coordinate system（X, y, z）, because probe is lifted along plumb line, the center point coordinate popped one's head at different depth is（0,0, z）；Root
According to the ingenious setting of three-dimensional cartesian coordinate system, the coordinate value tool that four phase laser distance measurement instrument 4.1,4.2,4.3,4.4 are determined
There is certainty, in a certain depth, the coordinate that four phase laser distance measurement instrument 4.1,4.2,4.3,4.4 are determined is respectively, every bit meets formula,
R is the radius of the foundation pile pore-forming depth, and x, y are the coordinate that foundation pile pore-forming justifies upper any point, x0、y0The circle justified for foundation pile pore-forming
Centre coordinate；
Select first phase formula laser range finder 4.1, second phase formula laser range finder 4.2, third phase formula laser range finder 4.3
Constitute following equations group：
First equation is subtracted each other with the 3rd equation and obtained：, detected due to popping one's head in hole,
In the case where not moving the origin of coordinates 0 and probe holding vertically, x in second equation0Necessarily it is less than d2, so
（d2-x0）It is certain to be more than zero, by y0Substitute into and obtain uniquely solving x in second equation0, and then the radius more than zero can be tried to achieve
R, obtains centre coordinate（x0,y0,z）With radius r；
3rd step, the combination for clicking according to 4 at 3 points, select first, second, third phase laser distance measurement instrument 4.1,4.2,4.3, and
First, the second, the 4th phase laser distance measurement instrument 4.1,4.2,4.4, second, third, the 4th phase laser distance measurement instrument 4.2,
4.3rd, 4.4 measurement data, constitutes three different equation groups, and utilize the meter described in second step according to second step methods described
3 centre coordinates in hole can be tried to achieve by calculating analysis method（x0,y0,z）With radius r；
4th step, the centre coordinate for trying to achieve 3 times（x0,y0,z）Averaged with radius r and draw mean center point（xp,yp,z）
With mean radius rpIt is used as the centre coordinate and radius in hole；Mean radius rpAnalysis is as shown in Figure 5 with computational methods FB(flow block)；
5th step, foundation pile pore-forming pitch analysis and computational methods are：
The centre coordinate tried to achieve at foundation pile pore-forming depth zero（xp0,yp0,z0）With radius r, on the basis of depth zero, by formulaThe tilting value in hole is calculated, all tilting values are that can plot a depth-trend curve；
xp0、yp0For in the central coordinate of circle that depth z is the foundation pile pore-forming circle that zero position calculating is obtained.
When a certain depth of foundation pile pore-forming is eccentric larger（Such as the stake in 800mm apertures, eccentric distance needs when reaching 250mm
Adjustment, calculation formula is D/2-d/2, and wherein D is stake diameter, and d is this probe equivalent diameter 300mm）, because probe has necessarily
Size, probe will be attached to a certain side opening wall, before probe is attached to the hole wall, adjustment hanging probe equipment, make probe put down
Move to the central point positioned at this depth hole, then set up with second step methods described new three-dimensional rectangular coordinate
System；The formula that the hole centre coordinate newly tried to achieve is corrected to former coordinate system is:
So as to complete eccentric correction of the probe in the foundation pile pore-forming depth.
More than analysis calculate understand advantage of the invention is that：
1st, using the ingenious setting of three-dimensional cartesian coordinate system so that the coordinate value that phase laser distance measurement instrument is determined, which has, to be determined
Property, solution obtains unique centre coordinate（x0,y0,z）With radius r, with calculating speed soon, the mesh for calculating display in real time is reached
's.
2nd, aperture center point and the mathematical derivation of the tight science of radius, it is ensured that hole tilts the accuracy calculated.
3rd, to the adjustment of the large eccentricity of drilling, the problem of large eccentricity borehole test is solved.
Action relationships are during present invention work：Main frame（Laptop computer 19）According to different depth, interval passes through wireless receiving and dispatching
Module sends measuring command simultaneously to four phase laser distance measurement instrument, while the depth number that registered depth counter is now sent
According to；After four phase laser distance measurement instrument measurements are finished, main frame（Laptop computer 19）, please using the data of wheel record when receiving data
Modulus formula, first by the measurement data of Address requests phase laser distance measurement instrument 4.1, receive after data again successively order request its
The measurement data of its phase laser distance measurement instrument, then preserves and calculates display, complete one-shot measurement, repeats above step until surveying
Amount is finished.
Claims (5)
1. a kind of foundation pile hole quality detecting system, including probe, vertical lift device；It is characterized in that：
The probe includes：For the housing being lifted in the foundation pile pore-forming, the loading plate in the housing is horizontally set on,
Laser range finder is respectively arranged with towards four direction on the loading plate, is corresponded on the side wall of housing each described sharp
Laser hole is offered respectively at the Laser emission window position of optar；Set in housing top wall along the foundation pile pore-forming radial level
It is equipped with level on boatswain chair, the boatswain chair and offers and housing perpendicular bisector is symmetrical with chute, boatswain chair is arranged at intervals with two fixed pulleys
Component；Single-chip microcomputer and radio receiving transmitting module are provided with housing, battery is provided with the bottom wall central position of housing, institute
State power input of the output end of battery respectively with the single-chip microcomputer, radio receiving transmitting module and laser range finder to be connected, four
It is connected after the control signal input of individual laser range finder is parallel with one another with the control signal output of single-chip microcomputer, each Laser Measuring
The data signal output of distance meter is connected with the data signal input of single-chip microcomputer respectively, and single-chip microcomputer is by serial line interface and wirelessly
Transceiver module is communicated to connect；
The vertical lift device includes：It is arranged on depth counter at the foundation pile pore-forming aperture on support, winch, data
Collector；The reel steel wire ropes of the winch bypass the counter wheel of the depth counter, described two fixed pulley assemblies successively
Two fixed pulleys after be fixedly connected with the support；The data acquisition unit and the radio receiving transmitting module that is arranged in housing without
Line is communicated to connect, and the length data signal input of data acquisition unit and the length data signal output end of depth counter connect
Connect, the communication interface of data acquisition unit is connected with mobile terminal wire communication.
2. foundation pile hole quality detecting system according to claim 1, it is characterised in that：Described two fixed pulley assemblies are equal
The pulley being arranged on by pulley support and by rotating shaft at the top of the pulley support is constituted, and the bottom of two pulley supports leads to respectively
The bolt crossed through the chute is connected with the boatswain chair.
3. foundation pile hole quality detecting system according to claim 1 or 2, it is characterised in that：The housing is positive four rib
Column construction, the laser range finder is phase laser distance measurement instrument, and the mobile terminal is laptop computer.
4. the detection method of foundation pile hole quality detecting system according to claim 1, it is characterised in that：As steps described below
Carry out：
Ensure that probe verticality in the foundation pile pore-forming is lifted when the first step, measurement, while ensureing four laser
The sensing of rangefinder is constant, and the depth value of test point is obtained by the depth counter；The data of probe collection are certain moment
Four laser range finder zero-base points are to the distance of hole wall, and the data record that the mobile terminal respectively gathers the moment is correspondence
Four laser range finders zero-base point to center probe point distance, obtain center probe point to four of hole wall apart from d1、d2、
d3、d4；
Second step, the detection and analysis of foundation pile pore-forming mean radius and computational methods are：
Four laser range finders are arranged on nylon loading plate towards four direction clockwise, in being set at depth zero to pop one's head in
Heart point is the origin of coordinates 0, and first laser rangefinder, which is pointed to, is set to y-axis forward direction, and second laser rangefinder, which is pointed to, is set to x-axis forward direction,
3rd laser range finder, which is pointed to, is set to y-axis negative sense, and the 4th laser range finder, which is pointed to, is set to x-axis negative sense, and vertical plumb line is set up for z-axis
Three-dimensional cartesian coordinate system（X, y, z）, because probe is lifted along plumb line, the center point coordinate popped one's head at different depth is（0,
0, z）；According to the setting of three-dimensional cartesian coordinate system, the coordinate value that four laser range finders are determined has certainty, in a certain depth,
The coordinate that four laser range finders are determined is respectively,
Every bit meets formula, r is the radius of the foundation pile pore-forming depth, x, y
Justify the coordinate of upper any point, x for foundation pile pore-forming0、y0The centre coordinate justified for foundation pile pore-forming；
Select first laser rangefinder, second laser rangefinder, the 3rd laser range finder composition following equations group：
First equation is subtracted each other with the 3rd equation and obtained：, detected due to popping one's head in hole,
In the case where not moving the origin of coordinates 0 and probe holding vertically, x in second equation0Necessarily it is less than d2, so
（d2-x0）It is certain to be more than zero, by y0Substitute into and obtain uniquely solving x in second equation0, and then the radius more than zero can be tried to achieve
R, obtains centre coordinate（x0,y0,z）With radius r；
3rd step, the combination for clicking according to 4 at 3 points, select first, second, third laser range finder, the first, second, the 4th Laser Measuring
Distance meter, second, third, the measurement data of the 4th laser range finder constitute three different equations according to second step methods described
Group, and 3 centre coordinates in hole can be tried to achieve using the calculation and analysis methods described in second step（x0,y0,z）With radius r；
4th step, the centre coordinate for trying to achieve 3 times（x0,y0,z）Averaged with radius r and draw mean center point（xp,yp,z）With
Mean radius rpIt is used as the centre coordinate and radius in hole；
5th step, the analysis of foundation pile pore-forming inclination measurement are with computational methods：
The centre coordinate tried to achieve at foundation pile pore-forming depth zero is denoted as with radius（xp0,yp0,z0）, on the basis of depth zero, by public affairs
FormulaThe tilting value in hole is calculated, all tilting values are that can plot a depth-inclination song
Line；xp0、yp0For in the central coordinate of circle that depth z is the foundation pile pore-forming circle that zero position calculating is obtained.
5. the detection method of foundation pile hole quality detecting system according to claim 4, it is characterised in that：When the foundation pile into
When a certain depth in hole is eccentric larger, the equipment popped one's head in described in adjustment hanging makes probe move to the center positioned at this depth hole
Point, then set up with second step methods described new three-dimensional cartesian coordinate system；The hole centre coordinate school newly tried to achieve
The formula for just arriving former coordinate system is:
So as to complete eccentric correction of the probe in the foundation pile pore-forming depth.
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| CN108254753A (en) * | 2017-12-25 | 2018-07-06 | 同济大学 | A kind of radical pile driving construction quality monitoring device based on ranging system |
| CN110554640A (en) * | 2018-06-01 | 2019-12-10 | 上海辉格科技发展有限公司 | scanner control circuit and data processing method |
| CN114991193A (en) * | 2022-06-13 | 2022-09-02 | 华中科技大学 | Pile foundation construction method for collapsible loess area by rotary drilling dry excavation method |
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