CN107036578B - Foundation pile pore-forming quality detection system and detection method thereof - Google Patents
Foundation pile pore-forming quality detection system and detection method thereof Download PDFInfo
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Abstract
The invention discloses a foundation pile pore-forming quality detection systemThe detection method comprises a probe and a vertical lifting device; the probe comprises a shell body and a laser range finder, wherein the shell body is used for being hung in a foundation pile pore-forming, the laser range finder is horizontally arranged in the shell body towards four directions, and a hanging plate is horizontally arranged on the top wall of the shell body along the radial direction of the foundation pile pore-forming; the vertical lifting device comprises a depth counter arranged on the bracket at the hole opening of the foundation pile; the method for detecting the average radius of the foundation pile hole is as follows: the first laser range finder is directed to be set to be positive in the y axis, the second laser range finder is directed to be positive in the x axis, the third laser range finder is directed to be negative in the y axis, the fourth laser range finder is directed to be negative in the x axis, the vertical plumb line is used for establishing a three-dimensional rectangular coordinate system (x, y, z) for the z axis, and coordinates measured by the four laser range finders meet the formula
. The invention has the advantages of light weight, convenient carrying, high detection efficiency and high detection precision by adopting non-mechanical detection of the vertical shaft inclination data.
Description
Technical Field
The invention relates to the field of foundation pile pore-forming detection, in particular to a foundation pile pore-forming quality detection system and a detection method of the foundation pile pore-forming quality detection system.
Background
Along with the rapid development of the economy in China, the construction technology of the building is also rapidly developed. Pile foundation has become the main foundation form of current building body, and in pile foundation work progress, drilling bored concrete pile belongs to underground hidden engineering, has many geological factor and human factor influence pile quality, can't intuitively carry out the transparent control entirely to its whole work progress, and the pile quality after the concrete casting is directly influenced to the quality of pore-forming. Such as: the smaller diameter of the pile hole reduces the side friction resistance and pile tip bearing capacity of the pile, and the bearing capacity of the whole pile is reduced, and the following steps are as follows: the expanding of the upper part of the pile hole can lead to the increase of the resistance of the upper part of the pile, so that the resistance of the lower part can not fully play a role, and the casting quantity of the concrete of the single pile is increased, the cost is increased, and the following steps are as follows: the deflection of the pile holes changes the vertical bearing force characteristics of the pile to a certain extent, weakens the effective exertion of the bearing force of the foundation pile, and easily causes the problems of difficult hoisting and placing of the reinforcement cage, hole collapse, insufficient thickness of the reinforcement protection layer and the like. It is therefore necessary to provide corresponding detection devices for detecting the individual links. The pore-forming quality detection can give necessary supervision and guidance to the drilling construction, and is an essential link in the process of drilling and filling pile construction. Meanwhile, the well diameter data is very important for comprehensively judging lithology, explaining other logging curves and calculating the well cementation cement amount.
Existing instruments are generally composed of two parts: one part is a downhole mechanical structure reflecting the change of the well diameter, and the part comprises a conversion device for converting mechanical displacement into an electric signal; the common caliper is provided with three or four arms, the tail ends of the arms are stretched to be clung to the well wall under the action of a spring, and along with the change of the caliper, the tail ends of the arms are stretched or folded, and meanwhile, the sliding arms of the potentiometer are driven to move, so that the change of the caliper becomes the change of a resistance value, and when the potentiometer is powered by a cable, the changed potential difference between the resistances reflects the change of the caliper; the other part is a ground recording part, which records the potential difference change, and the potential difference change is the size of the well diameter after passing through the well diameter gauge scale in advance. The hole diameter tester is in contact type, has heavy equipment and larger error, is inconvenient to carry, and cannot meet the requirement of quick detection of the hole forming quality of the foundation pile dry hole.
Disclosure of Invention
The invention aims to provide a foundation pile pore-forming quality detection system which is light in weight, convenient to carry and high in detection efficiency and detection precision. The invention further aims to provide a detection method of the foundation pile pore-forming quality detection system.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention relates to a foundation pile pore-forming quality detection system, which comprises a probe and a vertical lifting device, wherein the probe is arranged on the foundation pile pore-forming quality detection system;
the probe includes: the bearing plate is horizontally arranged in the shell, laser range finders are respectively arranged on the bearing plate towards four directions, and laser holes are respectively arranged on the side wall of the shell and correspond to the positions of the laser emission windows of each laser range finders; a hanging plate is horizontally arranged on the top wall of the shell along the radial direction of the foundation pile pore-forming, a sliding groove is horizontally arranged on the hanging plate, and two fixed pulley assemblies are symmetrically arranged on the hanging plate at intervals along the perpendicular bisector of the shell; the device comprises a shell, a single chip microcomputer, a wireless transceiver module, a storage battery, a serial interface and a wireless transceiver module, wherein the single chip microcomputer and the wireless transceiver module are arranged in the shell, the storage battery is arranged at the center of the bottom wall of the shell, the output end of the storage battery is respectively connected with the single chip microcomputer, the wireless transceiver module and the power input end of the laser range finder, the control signal input ends of the four laser range finders are mutually connected in parallel and then are connected with the control signal output end of the single chip microcomputer, the data signal output end of each laser range finder is respectively connected with the data signal input end of the single chip microcomputer, and the single chip microcomputer is in communication connection with the wireless transceiver module through the serial interface;
the vertical elevating device includes: the depth counter, the winch and the data acquisition device are arranged on the bracket at the hole opening of the foundation pile; the reel steel wire rope of the winch sequentially bypasses the counting wheel of the depth counter and the two fixed pulleys of the two fixed pulley assemblies and is fixedly connected with the bracket; the data collector is in wireless communication connection with the wireless transceiver module arranged in the shell, the length data signal input end of the data collector is connected with the length data signal output end of the depth counter, and the communication interface of the data collector is in wired communication connection with the mobile terminal.
The two fixed pulley assemblies are respectively composed of a pulley support and a pulley arranged at the top of the pulley support through a rotating shaft, and the lower parts of the two pulley supports are respectively connected with the hanger plate through bolts penetrating through the sliding grooves.
The shell is of a regular quadrangular prism structure, the laser range finder is a phase type laser range finder, and the mobile terminal is a portable computer.
The detection method of the foundation pile pore-forming quality detection system comprises the following steps:
firstly, ensuring that the probe is lifted vertically in the foundation pile hole during measurement, ensuring that the directions of the four phase-type laser range finders are unchanged, and obtaining depth values of test points through the depth counter; the data collected by the probe are distances from zero base points of four phase-type laser range finders at a certain moment to the hole wall, the mobile terminal records the data collected at the moment as distances from the zero base points of the corresponding four phase-type laser range finders to the center point of the probe, and four distances d from the center point of the probe to the hole wall are obtained 1 、d 2 、d 3 、d 4 ；
The second step, the detection analysis and calculation method of the average radius of the foundation pile pore-forming is as follows:
four phase type laser rangefinders are arranged on a nylon bearing plate clockwise towards four directions, a probe center point is set at a zero depth and used as a coordinate origin 0, a first phase type laser rangefinder direction is set to be positive y-axis, a second phase type laser rangefinder direction is set to be positive x-axis, a third phase type laser rangefinder direction is set to be negative y-axis, a fourth phase type laser rangefinder direction is set to be negative x-axis, a vertical plumb line is set to be a three-dimensional rectangular coordinate system (x, y, z) for a z-axis, and coordinates of the center point of the probe at different depths are (0, z) because the probe ascends and descends along the plumb line; according to the ingenious setting of the three-dimensional rectangular coordinate system, coordinate values measured by the four phase type laser rangefinders have certainty, and at a certain depth, the coordinates measured by the four phase type laser rangefinders are respectively
Each point satisfies the formula +.>
R is the radius of the foundation pile at the depth of the hole, and x and y are the circles of the foundation pile holeCoordinates of any point, x 0 、y 0 The center coordinates of the foundation pile hole forming circle are obtained;
selecting a first phase type laser range finder, a second phase type laser range finder and a third phase type laser range finder to form the following equation set:
subtracting the first equation from the third equation:
since the probe is probing in the bore, x in the second equation is given without moving the origin of coordinates 0 and with the probe held vertical 0 Must be smaller than d 2 Therefore (d) 2 -x 0 ) Must be greater than zero, y 0 Substituting into the second equation to obtain a unique solution x 0 Further, a radius r larger than zero can be obtained to obtain a center coordinate (x 0 ,y 0 Z) and radius r;
step three, selecting a first, a second and a third phase type laser distance measuring instrument according to the combination of 3 points selected from 4 points, forming three different equation sets by the measurement data of the first, the second and the fourth phase type laser distance measuring instruments according to the method in the step two, and obtaining 3 center coordinates (x 0 ,y 0 Z) and radius r;
fourth, the center coordinates (x) 0 ,y 0 Average center point (x) is obtained by averaging z) with radius r p ,y p Z) and average radius r p As the center coordinates and radius of the hole; average radius r p The flow chart of the analysis and calculation method is shown in fig. 5;
fifthly, the foundation pile pore-forming inclination measurement analysis and calculation method comprises the following steps:
the center coordinates and radius obtained at zero depth of foundation pile hole are recorded as (x) p0 ,y p0 ,z 0 ) At zero depthBased on the formula
Calculating inclination values of the holes, and drawing a depth-inclination curve by all the inclination values; x is x p0 、y p0 The center coordinates of the foundation pile hole forming circle are calculated by taking the depth z as the zero position.
When the foundation pile is formed into a hole with a certain depth and eccentric, such as a pile with a diameter of 800mm, the eccentric distance needs to be adjusted when the eccentric distance reaches 250mm, the calculation formula is D/2-D/2, wherein D is the diameter of the pile, D is the equivalent diameter of the probe, and the equivalent diameter of the probe is 300mm, because the probe has a certain size, the probe is attached to a certain side hole wall, and before the probe is attached to the hole wall, the equipment for hanging the probe is adjusted, so that the probe is translated to the center point of the depth hole
Then establishing a new three-dimensional rectangular coordinate system by the method in the second step; the formula for correcting the center coordinates of the newly obtained holes to the original coordinate system is as follows:
thereby completing the eccentricity correction of the probe at the depth of the foundation pile hole.
The invention has the advantages of adopting non-mechanical detection shaft inclination data, light weight, convenient carrying, high detection efficiency and detection precision, and is especially suitable for detecting the foundation pile dry hole forming quality of field test.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the probe according to the present invention.
Fig. 3.1 is a schematic plan view of four of the phase laser rangefinders of the present invention.
Fig. 3.2 is a schematic A-A diagram of fig. 3.1.
Fig. 4 is a schematic bottom view of the probe of the present invention.
FIG. 5 is a flow chart of the average radius detection analysis and calculation method of the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings, and the embodiments and specific operation procedures are given by the embodiments of the present invention under the premise of the technical solution of the present invention, but the scope of protection of the present invention is not limited to the following embodiments.
1-4, the foundation pile pore-forming quality detection system comprises a probe and a vertical lifting device;
the probe includes: the device comprises a shell 2 with a regular quadrangular prism structure, a nylon bearing plate 3, a phase laser range finder 4.1, 4.2, 4.3 and 4.4, wherein the shell 2 is used for being hoisted in a foundation pile hole 1, the nylon bearing plate 3 is horizontally arranged in the shell 2, the nylon bearing plate 3 is respectively provided with a laser hole 5 towards four directions, and the positions, corresponding to the laser emission windows of each phase laser range finder, of the side wall of the shell 2 are respectively provided with a laser hole; a hanging plate 6 is horizontally arranged on the top wall of the shell 2 along the radial direction of the foundation pile hole 1, a sliding groove 7 is horizontally arranged on the hanging plate 6, two fixed pulley assemblies are arranged on the hanging plate 6 at intervals symmetrical to the perpendicular bisectors of the shell, each fixed pulley assembly is composed of a pulley support 8 and a pulley 9 arranged at the top of the pulley support 8 through a rotating shaft, and the lower parts of the two pulley supports 8 are respectively connected with the hanging plate 6 through a locking bolt 10 penetrating through the sliding groove 7; the shell 2 is internally provided with a singlechip 11 and a wireless transceiver module, a storage battery 13 is fixed at the central position in a concave cavity on the lower surface of the bottom wall of the shell 2 through a metal brace 12, the output end of the storage battery 13 is respectively connected with the singlechip 11, the wireless transceiver module and the power input ends of four phase-type laser rangefinders 4.1, 4.2, 4.3 and 4.4, the control signal input ends of the four phase-type laser rangefinders 4.1, 4.2, 4.3 and 4.4 are mutually connected in parallel and then are connected with the control signal output end of the singlechip 11, the data signal output ends of the four phase-type laser rangefinders 4.1, 4.2, 4.3 and 4.4 are respectively connected with the data signal input end of the singlechip 11, and the singlechip 11 is in communication connection with the wireless transceiver module through a serial interface;
the vertical elevating device includes: a depth counter (brand: heaven ocean wave; model: TY-26; product name: pulley winch with depth count display; specification: special wire winding and unwinding pulley winch), winch 15 and data collector 16 arranged on the bracket 14 at the hole of the foundation pile hole 1; the reel steel wire rope 17 of the winch 15 sequentially bypasses the counting wheel 18 of the depth counter and the two fixed pulleys 9 of the two fixed pulley assemblies and is fixedly connected with the bracket 14; the data collector 16 is in wireless communication connection with a wireless transceiver module arranged in the shell 2, a length data signal input end of the data collector 16 is connected with a length data signal output end of the depth counter, and a communication interface of the data collector 16 is in wired communication connection with the laptop 19.
The probe adopts non-contact phase laser measurement, so the probe has the advantages of small abrasion, reliable measurement and high precision. Two fixed pulley assemblies are arranged at two ends of the top of the probe and are connected with a storage battery fixed at the center of the bottom, so that the gravity center of the probe is positioned at the center of the lower part, and the problems of directivity and perpendicularity of the probe are solved. The probe data adopts a wireless transmission mode, thereby not only bringing convenience to measurement operation, but also eliminating the interference problem of a wired transmission line to the directivity and perpendicularity of the probe in operation. The depth counter automatically and quickly transmits data without request, so that continuously variable depth data is discretized into high-density digital depth data. The design thought of the virtual host computer is that the acquisition software is installed in the mobile computer, so that the universality of the equipment is greatly improved, and popularization and application are facilitated.
As shown in fig. 1, 3.1 and 5, the detection method of the foundation pile pore-forming quality detection system according to the invention comprises the following steps:
firstly, ensuring that the probe vertically rises and falls in a foundation pile hole during measurement, ensuring that the directions of four phase-type laser rangefinders 4.1, 4.2, 4.3 and 4.4 are unchanged, and obtaining depth values of test points through a depth counter; the data collected by the probe are distances from zero base points of four phase-type laser range finders 4.1, 4.2, 4.3 and 4.4 at a certain moment to the hole wall, and the portable computer records the data collected at the moment as distances from the zero base points of the four phase-type laser range finders 4.1, 4.2, 4.3 and 4.4 to the probe center point respectively to obtain four distances d from the probe center point to the hole wall 1 、d 2 、d 3 、d 4 ；
The second step, the detection analysis and calculation method of the average radius of the foundation pile pore-forming is as follows:
four phase type laser rangefinders 4.1, 4.2, 4.3 and 4.4 are arranged on the nylon bearing plate 3 clockwise towards four directions, a probe center point is set at zero depth and used as a coordinate origin 0, the direction of the first phase type laser rangefinder 4.1 is set to be positive y-axis, the direction of the second phase type laser rangefinder 4.2 is set to be positive x-axis, the direction of the third phase type laser rangefinder 4.3 is set to be negative y-axis, the direction of the fourth phase type laser rangefinder 4.4 is set to be negative x-axis, a three-dimensional rectangular coordinate system (x, y and z) is established by taking a vertical plumb line as a z-axis, and coordinates of the center point of the probe at different depths are (0, 0 and z) because the probe ascends and descends along the plumb line; according to the ingenious setting of the three-dimensional rectangular coordinate system, coordinate values measured by the four phase-type laser rangefinders 4.1, 4.2, 4.3 and 4.4 have certainty, and at a certain depth, the coordinates measured by the four phase-type laser rangefinders 4.1, 4.2, 4.3 and 4.4 are respectively
Each point satisfies the formula
R is the radius of the foundation pile at the depth of the hole, x and y are the coordinates of any point on the hole forming circle of the foundation pile, and x 0 、y 0 The center coordinates of the hole forming circle of the foundation pile are the center coordinates of the circle;
the first phase type laser range finder 4.1, the second phase type laser range finder 4.2 and the third phase type laser range finder 4.3 are selected to form the following equation set:
subtracting the first equation from the third equation:
since the probe detects in the hole, the first probe is kept vertical without moving the origin of coordinates 0X in two equations 0 Must be smaller than d 2 Therefore (d) 2 -x 0 ) Must be greater than zero, y 0 Substituting into the second equation to obtain a unique solution x 0 Further, a radius r larger than zero can be obtained to obtain a center coordinate (x 0 ,y 0 Z) and radius r;
step three, selecting a first, a second and a third phase type laser distance measuring instruments 4.1, 4.2 and 4.3 according to the combination of 3 points selected from 4 points, wherein the measurement data of the first, the second and the fourth phase type laser distance measuring instruments 4.1, 4.2 and 4.4, the second, the third and the fourth phase type laser distance measuring instruments 4.2, 4.3 and 4.4 form three different equation sets according to the method in the step two, and the calculation and analysis method in the step two can be utilized to obtain 3 center coordinates (x 0 ,y 0 Z) and radius r;
fourth, the center coordinates (x) 0 ,y 0 Average center point (x) is obtained by averaging z) with radius r p ,y p Z) and average radius r p As the center coordinates and radius of the hole; average radius r p The flow chart of the analysis and calculation method is shown in fig. 5;
fifthly, the foundation pile pore-forming inclination analysis and calculation method comprises the following steps:
center coordinates (x) obtained at zero depth of foundation pile hole formation p0 ,y p0 ,z 0 ) And radius r, based on zero depth, according to the formula
Calculating inclination values of the holes, and drawing a depth-inclination curve by all the inclination values; x is x p0 、y p0 The center coordinates of the foundation pile hole forming circle are calculated by taking the depth z as the zero position.
When the hole forming depth of the foundation pile is larger in eccentricity (for example, a pile with the aperture of 800mm, the eccentric distance is required to be adjusted when reaching 250mm, the calculation formula is D/2-D/2, wherein D is the diameter of the pile, D is the equivalent diameter of the probe, and the equivalent diameter of the probe is 300 mm), the probe is attached to a certain side hole wall because the probe has a certain size, and the equipment for hanging the probe is adjusted before the probe is attached to the hole wall, so that the probe is flatTo a point at the center of the hole at this depth
Then establishing a new three-dimensional rectangular coordinate system by the method in the second step; the formula for correcting the center coordinates of the newly obtained holes to the original coordinate system is as follows:
thereby completing the eccentricity correction of the probe at the depth of the foundation pile hole.
From the above analysis calculations, the advantages of the present invention are seen in:
1. by adopting ingenious setting of a three-dimensional rectangular coordinate system, coordinate values measured by the phase laser range finder have certainty, and unique central coordinates (x) are obtained by solving 0 ,y 0 Z) and radius r, the calculation speed is high, and the purpose of real-time calculation and display is achieved.
2. And the accuracy of hole inclination calculation is ensured by mathematical derivation of the aperture center point and the radius strictly and scientifically.
3. And the large eccentricity of the drilling hole is adjusted, so that the difficult problem of large eccentricity drilling hole testing is solved.
The action relation of the invention when in work is as follows: the host (the portable computer 19) sends simultaneous measurement commands to the four phase type laser range finders through the wireless transceiver module at intervals according to different depths, and simultaneously records the depth data sent by the depth counter at the moment; after the four phase type laser rangefinders finish measurement, when the host computer (the portable computer 19) receives data, a data request mode of a round record is adopted, firstly, the measurement data of the phase type laser rangefinder 4.1 are requested according to the address, after the data are received, the measurement data of other phase type laser rangefinders are sequentially requested in sequence, then calculation display is saved, one-time measurement is completed, and the steps are repeated until the measurement is finished.
Claims (4)
1. The detection method of the foundation pile pore-forming quality detection system adopts the foundation pile pore-forming quality detection system, which comprises a probe and a vertical lifting device;
the probe includes: the bearing plate is horizontally arranged in the shell, laser range finders are respectively arranged on the bearing plate towards four directions, and laser holes are respectively arranged on the side wall of the shell and correspond to the positions of the laser emission windows of each laser range finders; a hanging plate is horizontally arranged on the top wall of the shell along the radial direction of the foundation pile pore-forming, a sliding groove is horizontally arranged on the hanging plate, and two fixed pulley assemblies are symmetrically arranged on the hanging plate at intervals along the perpendicular bisector of the shell; the device comprises a shell, a single chip microcomputer, a wireless transceiver module, a storage battery, a serial interface and a wireless transceiver module, wherein the single chip microcomputer and the wireless transceiver module are arranged in the shell, the storage battery is arranged at the center of the bottom wall of the shell, the output end of the storage battery is respectively connected with the single chip microcomputer, the wireless transceiver module and the power input end of the laser range finder, the control signal input ends of the four laser range finders are mutually connected in parallel and then are connected with the control signal output end of the single chip microcomputer, the data signal output end of each laser range finder is respectively connected with the data signal input end of the single chip microcomputer, and the single chip microcomputer is in communication connection with the wireless transceiver module through the serial interface;
the vertical elevating device includes: the depth counter, the winch and the data acquisition device are arranged on the bracket at the hole opening of the foundation pile; the reel steel wire rope of the winch sequentially bypasses the counting wheel of the depth counter and the two fixed pulleys of the two fixed pulley assemblies and is fixedly connected with the bracket; the data acquisition device is in wireless communication connection with the wireless transceiver module arranged in the shell, the length data signal input end of the data acquisition device is connected with the length data signal output end of the depth counter, and the communication interface of the data acquisition device is in wired communication connection with the mobile terminal;
the detection is carried out according to the following steps:
firstly, ensuring that the probe is lifted vertically in the foundation pile hole during measurement, ensuring that the directions of the four laser rangefinders are unchanged, and obtaining depth values of test points through the depth counter; the data collected by the probe are distances from zero base points of the four laser rangefinders to the hole wall at a certain moment, and the mobile terminal respectively records the data collected at the moment as the zero base points of the four corresponding laser rangefindersThe distance from the probe center point to the hole wall is obtained to obtain four distances d from the probe center point to the hole wall 1 、d 2 、d 3 、d 4 ；
The second step, the detection analysis and calculation method of the average radius of the foundation pile pore-forming is as follows:
the four laser rangefinders are arranged on the nylon bearing plate clockwise towards four directions, a coordinate origin 0 taking the center point of the probe as a coordinate origin is set at a zero depth, the first laser rangefinder is set to be positive in the y axis, the second laser rangefinder is set to be positive in the x axis, the third laser rangefinder is set to be negative in the y axis, the fourth laser rangefinder is set to be negative in the x axis, a three-dimensional rectangular coordinate system (x, y, z) is established by taking the vertical plumb line as the z axis, and the coordinates of the center points of the probe at different depths are (0, z) because the probe ascends and descends along the plumb line; according to the setting of the three-dimensional rectangular coordinate system, the coordinate values measured by the four laser rangefinders have certainty, and at a certain depth, the coordinates measured by the four laser rangefinders are (0, d) 1 ，z)，(d 2 ，0，z)，(0，-d 3 ，z)，(-d 4 0, z), each point satisfies the formula (x-x) 0 ) 2 +(y-y 0 ) 2 ＝r 2 R is the radius of the foundation pile at the depth of the hole, x and y are the coordinates of any point on the hole forming circle of the foundation pile, and x 0 、y 0 The center coordinates of the foundation pile hole forming circle are obtained;
selecting a first laser range finder, a second laser range finder and a third laser range finder to form the following equation set:
subtracting the first equation from the third equation:
since the probe is probing in the bore, x in the second equation is given without moving the origin of coordinates 0 and with the probe held vertical 0 Must be smaller than d 2 Therefore (d) 2 -x 0 ) Certain degree ofGreater than zero, y 0 Substituting into the second equation to obtain a unique solution x 0 Further, a radius r larger than zero can be obtained to obtain a center coordinate (x 0 ,y 0 Z) and radius r;
step three, selecting a first, a second and a third laser distance measuring instrument according to the combination of 3 points selected from 4 points, forming three different equation sets by measurement data of the first, the second and the fourth laser distance measuring instruments according to the method in the step two, and obtaining 3 center coordinates (x 0 ,y 0 Z) and radius r;
fourth, the center coordinates (x) 0 ,y 0 Average center point (x) is obtained by averaging z) with radius r p ,y p Z) and average radius r p As the center coordinates and radius of the hole;
fifthly, the foundation pile pore-forming inclination measurement analysis and calculation method comprises the following steps:
the center coordinates and radius obtained at zero depth of foundation pile hole are recorded as (x) p0 ,y p0 ,z 0 ) Based on zero depth, the formula is as follows
Calculating inclination values of the holes, and drawing a depth-inclination curve by all the inclination values; x is x p0 、y p0 The center coordinates of the foundation pile hole forming circle are calculated by taking the depth z as the zero position.
2. The method for detecting the foundation pile pore-forming quality detection system according to claim 1, wherein: the two fixed pulley assemblies are respectively composed of a pulley support and a pulley arranged at the top of the pulley support through a rotating shaft, and the lower parts of the two pulley supports are respectively connected with the hanger plate through bolts penetrating through the sliding grooves.
3. A method of detecting a pile hole quality detection system according to claim 1 or 2, wherein: the shell is of a regular quadrangular prism structure, the laser range finder is a phase type laser range finder, and the mobile terminal is a portable computer.
4. The method for detecting the pore-forming quality of the foundation pile according to claim 1, wherein: when the eccentricity of a certain depth of the foundation pile hole is large, adjusting the equipment for hanging the probe to enable the probe to translate to a center point (x d ，y d 0), establishing a new three-dimensional rectangular coordinate system by the method in the second step; the formula for correcting the center coordinates of the newly obtained holes to the original coordinate system is as follows:
thereby completing the eccentricity correction of the probe at the depth of the foundation pile hole.
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| CN108254753B (en) * | 2017-12-25 | 2019-12-31 | 同济大学 | Root type pile construction quality monitoring device based on ultrasonic distance measuring system |
| CN110554640B (en) * | 2018-06-01 | 2022-08-30 | 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 |
| CN117168276B (en) * | 2023-11-03 | 2024-02-02 | 北京华力方元科技有限公司 | Quality detection device and method for dry hole of cast-in-place pile |
| CN117702711B (en) * | 2024-01-15 | 2024-06-04 | 广东大禹水利建设有限公司 | Soft soil foundation pile foundation safety intelligent sensing construction method |
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