Structure and method for detecting perpendicularity of formed hole of cast-in-place pile

Abstract

The invention discloses a cast-in-place pile pore-forming perpendicularity detection structure and method.The structure comprises a bottom supporting piece, a measuring piece, a supporting assembly, a stay wire, a detector and a wire drawing device, the bottom supporting piece is connected with the supporting assembly, the measuring piece is connected with the supporting assembly through the stay wire, one end of the stay wire is connected with the wire drawing device, and the other end of the stay wire is connected with the detector; the detector and the wire drawing device are arranged on the supporting assembly. The structure is simple, the bottom supporting piece, the measuring piece, the supporting assembly and the like can be made of waste materials of a construction site, and the utilization rate of the waste materials is increased. The descending of the measuring piece is limited through the stay wire and the wire drawing device, and when the stay wire handle pulls the measuring circular ring upwards through the stay wire, whether the perpendicularity of the cast-in-place pile hole meets the requirement or not is judged by judging the readings of the detectors on the inclined strut A and the inclined strut B. By comparing the readings before and after the detector, the detection structure can accurately judge the perpendicularity of the formed hole, reduce engineering defects and avoid disasters.

Description

Technical Field

[0001] The invention belongs to the technical field of verticality detection, and in particular relates to a structure and method for detecting the verticality of a bored pile hole. Background Art

[0002] At present, there are drill pipe inclinometer, hammer (ball) method and inclinometer for hole detection. The drill pipe inclinometer mainly makes it difficult to determine the direction, the eccentric wedge is easy to put down but not easy to take out, and the diameter must be reduced after the eccentric wedge is put down; when the hammer (ball) method is used, when the building is high and the site is small, the on-site measurement and detection is difficult and is greatly affected by the climate; when the inclinometer is used, only one depth and one axial data can be measured at the same time, and the measured data needs to be exported and converted, and the entire measurement cycle is long. Therefore, a hole verticality structure that is not affected by factors such as climate, time, hole depth, etc. is needed, and can also realize the functions of accurate measurement and instant reading.

[0003] The patent document with announcement number CN106595444A discloses a method for measuring the verticality of a rotary bored pile hole, by adding a steel bar in the middle of the bottom surface of the steel cage, and setting a vertical upward lifting ring at the center point of the steel bar, fixing one end of a thin rope on a floating ball, and passing the other end of the thin rope through the lifting ring and pulling it to the top of the pile hole, hanging the steel cage into the rotary bored pile hole, replenishing mud in the rotary bored pile hole, pulling the other end of the thin rope so that the floating ball just floats on the liquid surface of the mud in the rotary bored pile hole, and keeping the thin rope in a taut state; setting the XY axis of the cross scale according to the direction of the pile row, and making the center of the cross scale located at the top center point of the rotary bored pile hole, obtaining the deviation direction of the center point of the bottom of the rotary bored pile and the distance of the center point of the floating ball offset in the X-axis direction and the Y-axis direction of the cross scale, thereby calculating the verticality of the rotary bored pile hole. This patent calculates verticality through the reading of a cross scale, and the reading may affect the accuracy of the verticality calculation due to manual observation or scale accuracy.

[0004] The patent document with the announcement number CN111220089A discloses a pile foundation hole shape and verticality detection device, including a guide frame structure, a suspension rod mechanism, a detector, and a terminal processing display. The guide frame structure is arranged above the drill hole, the suspension rod mechanism is fixed by the guide frame structure, the detector is installed at the bottom of the suspension rod mechanism, and a laser receiver and a laser transmitter are respectively installed at the top and bottom of the suspension rod mechanism; the suspension rod mechanism is assembled by a round tube, and a waterproof structure is provided on the round tube; the detector includes a mounting column, and a distance sensor is fixedly installed at the outer end of the piston rod of the first waterproof electric telescopic rod; the distance sensor, the first waterproof electric telescopic rod, the laser receiver and the laser transmitter are all electrically connected to the terminal processing display through cables; the terminal processing display of this scheme fits the three-dimensional spatial shape of the pile hole according to the lifting depth and the radial distance changes in several directions, and automatically calculates the verticality of the pile foundation. The device preparation cost of this patent is high, and the transportation and storage of precision instruments require more costs. It cannot be prepared locally in a construction site with simple conditions, and the flexibility of use is low. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a structure and method for detecting the verticality of bored pile holes.

[0006] The present invention is achieved through the following technical solutions.

[0007] The present invention provides a bored pile hole verticality detection structure, comprising a bottom support member, a measuring member, a support assembly, a pull wire, a detector and a wire drawing device, wherein the bottom support member is connected to the support assembly, the measuring member is connected to the support assembly via a pull wire, one end of the pull wire is connected to the wire drawing device, and the detector and the wire drawing device are arranged on the support assembly.

[0008] Preferably, the support assembly includes a diagonal brace A, a diagonal brace B, a horizontal cross brace and a diagonal brace C. One side of the horizontal cross brace is connected to the diagonal brace A, and the other side of the horizontal cross brace is connected to the diagonal brace B. Both ends of the horizontal cross brace are respectively connected to the bottom support member. Two diagonal braces C are provided. The top ends of the diagonal braces A, the diagonal brace B and the two diagonal braces C are connected to each other, and the pull wire is connected to the horizontal cross brace.

[0009] Preferably, pulleys are respectively arranged on the diagonal brace A, diagonal brace B and horizontal cross brace, a hole is arranged on the side of the horizontal cross brace close to the bottom support member, and the pull wire passes through the hole and penetrates the horizontal cross brace for sliding connection.

[0010] Preferably, the pull wire includes pull wire A, pull wire B and pull wire C. The pull wire A passes through the channel to penetrate one side of the horizontal cross brace and is slidably connected with the pulley on the diagonal brace A and the pulley on the horizontal cross brace in sequence. The pull wire B passes through the channel to penetrate the other side of the horizontal cross brace and is slidably connected with the pulley on the diagonal brace B and the pulley on the horizontal cross brace in sequence.

[0011] Preferably, the bottom support member is L-shaped, a vertical groove is arranged on one side of the bottom support member, a hole is arranged at the bottom of the bottom support member, the pull wire passes through the bottom of the bottom support member through the hole, and the measuring member is in a circular ring shape.

[0012] Preferably, an elastic member is disposed on the bottom support member, one end of the elastic member is connected to the bottom support member, and the other end of the elastic member is connected to the support assembly.

[0013] Preferably, the wire drawing device comprises a wire clamping box, a wire clamping slot and a wire pulling handle, the wire clamping box is connected to the supporting assembly, the wire clamping slot is arranged in the wire clamping box, and the wire pulling wire passes through the wire clamping box and the wire clamping slot and is connected to the wire pulling handle.

[0014] Preferably, the detector is connected to the support assembly via a fixed baffle, the detector comprises a goniometer A and a goniometer B, a connecting piece is arranged on the measuring piece, and the connecting piece is arranged on the measuring piece in a cross shape.

[0015] A method for using a bored pile hole verticality detection structure comprises the following steps:

[0016] S1: Measure the diameter and depth of the bored pile foundation pit, and make a measuring piece that fits the inner wall of the foundation pit according to the size of the foundation pit;

[0017] S2: Make diagonal brace A, diagonal brace B, horizontal cross brace and diagonal brace C, and complete the connection of the support components, and set the bottom end of diagonal brace C on the soil layer;

[0018] S3: Setting the bottom support member on the soil layer, setting the horizontal cross brace in the vertical groove, and then installing the elastic member;

[0019] S4: Install the pulleys on the diagonal brace A, diagonal brace B and horizontal cross brace respectively;

[0020] S5: Install the wire drawing device, then install the wire A, wire B and wire C, connect the goniometer A to the diagonal brace A through the fixed baffle, and connect the goniometer B to the diagonal brace B through the fixed baffle;

[0021] S6: Determine whether the installation position, accuracy, elevation, etc. of each part meet the design requirements. If not, repeat the above installation steps until the calibration and installation are qualified to complete the installation of the detection structure;

[0022] S6: Determine whether the installation position, accuracy, elevation, etc. of each part meet the design requirements; if not, repeat the above installation steps until the calibration and installation are qualified to complete the installation of the detection structure;

[0023] S7: After installation, record the initial readings of goniometer A and goniometer B, unlock the wire-drawing device and allow the measuring piece to descend into the bored pile hole. When the measuring piece is located at the bottom, middle and top of the bored pile hole, record the readings of goniometer A and goniometer B respectively. Take the average of three measurements for the readings at each position and compare the error between the average and the initial data to see if the error is less than or equal to the specification or design value. If it is less than the specification or design value, the bored pile hole is judged to be qualified. If not, use hole repair or other remedial measures until the verticality of the bored pile hole is qualified.

[0024] Preferably, in step S4, the tangent line of the pulley on the diagonal brace A is flush with the end of one end of the horizontal cross brace, and the tangent line of the pulley on the diagonal brace B is flush with the end of the other end of the horizontal cross brace, and a pulley is arranged on each side of the center point of the horizontal cross brace.

[0025] In step S5, the lengths of the pull wires A and B are the same, the pull wire C is directly connected to the measuring piece and does not contact the pulley, and the connection points of the pull wires A, B and C with the pull wire handle are all on the same side of the pull wire handle.

[0026] The beneficial effects of the present invention are:

[0027] The structural structure of the present invention is relatively simple, and the bottom support, measuring parts, supporting components, etc. can be made of waste materials from the construction site, thereby improving the utilization rate of waste materials. The measuring parts are limited to fall by the wire pulling and wire drawing devices. When the wire pulling handle pulls the measuring ring upwards through the wires A, B, and C, the verticality of the bored pile hole is determined by judging the readings of the detectors on the diagonal braces A and B to determine whether the verticality of the bored pile hole meets the requirements. By comparing the readings before and after the detector, the detection structure can accurately determine the verticality of the hole, improve the quality of the project, reduce engineering defects, and avoid the occurrence of disasters.

[0028] The structure of the present invention can be randomly manufactured on site and can also be reused. It has the characteristic of fast measurement speed and is particularly suitable for deep foundation pit engineering of large projects with high requirements for the verticality of holes. It can improve the quality of holes and indirectly improve the quality of casting, thus providing guarantee for the safety of later operation of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a detection schematic diagram of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the structure of the present invention;

[0032] Figure 4 is a schematic diagram of the bottom support structure of the present invention;

[0033] Figure 5 It is a detection flow chart of the present invention.

[0034] In the figure: 1-soil layer, 2-bottom support member, 201-vertical groove, 3-elastic member, 4-angiometer A, 5-angiometer B, 6-cable box, 7-cable groove, 8-wire handle, 9-through fixed baffle, 10-wire A, 11-wire B, 12-wire C, 13-pulley, 14-measuring member, 141-connecting member, 142-connecting line, 15-diagonal brace A, 16-diagonal brace B, 17-horizontal cross brace, 18-diagonal brace C, 19-channel. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0036] Example:

[0037] like Figures 1 to 5 As shown, a bored pile hole verticality detection structure comprises a bottom support member 2, a measuring member 14, a support assembly, a pull wire, a detector and a wire drawing device, wherein the bottom support member 2 is connected to the support assembly, the measuring member 14 is connected to the support assembly via a pull wire, one end of the pull wire is connected to the wire drawing device, and the detector and the wire drawing device are arranged on the support assembly.

[0038] The support assembly includes a diagonal brace A15, a diagonal brace B16, a horizontal cross brace 17 and a diagonal brace C18. One side of the horizontal cross brace 17 is welded to the diagonal brace A15, and the other side of the horizontal cross brace 17 is welded to the diagonal brace B16. Both ends of the horizontal cross brace 17 are respectively connected to the bottom support member 2. Two diagonal braces C18 are provided. The top ends of the diagonal brace A15, the diagonal brace B16 and the two diagonal braces C18 are welded to each other, and the pull wire is connected to the horizontal cross brace 17.

[0039] Pulleys 13 are respectively arranged on the diagonal brace A15, the diagonal brace B16 and the horizontal cross brace 17. A hole 19 is arranged on the side of the horizontal cross brace 17 close to the bottom support member 2. The pull wire passes through the hole 19 and penetrates the horizontal cross brace 17 for sliding connection.

[0040] The pull wires include pull wire A10, pull wire B11 and pull wire C12. The pull wire A10 passes through one side of the horizontal cross brace 17 through the hole 19 and then slides with the pulley 13 on the diagonal brace A15 and the pulley 13 on the horizontal cross brace 17 in sequence. The pull wire B11 passes through the other side of the horizontal cross brace 17 through the hole 19 and then slides with the pulley 13 on the diagonal brace B16 and the pulley 13 on the horizontal cross brace 17 in sequence. One end of the pull wire A10, pull wire B11 and pull wire C12 are connected to the pull wire handle 8 after passing through the wire clamping box 6 and the wire clamping groove 7. The other ends of the pull wire A10, pull wire B11 and pull wire C12 are connected to the measuring piece 14. Among them, the pull wire A10 and the pull wire B11 are connected to the two sides of the measuring piece 14, the pull wire C12 is connected to the connecting piece 141 on the measuring piece, the pull wire C12 is arranged above the center point of the connecting piece 141, the connecting piece 141 is provided with four connecting wires 142, the connecting wires 142 are fastened to the connecting piece 141, the bottom end of the pull wire C12 is connected to the measuring piece 14 through the four connecting wires 142, and the horizontal distances from the connection points of the four connecting wires 142 and the connecting piece 141 to the center of the measuring piece 14 are equal, and the four connecting wires 142 are connected to the same connection point of the pull wire C12.

[0041] The bottom support member 2 is L-shaped, a vertical groove 201 is provided on one side of the bottom support member 2, a hole 19 is provided at the bottom of the bottom support member 2, the pull wire passes through the bottom of the bottom support member 2 through the hole 19, and the measuring member 14 is annular.

[0042] An elastic member 3 is disposed on the bottom support member 2 , one end of the elastic member 3 is welded to the bottom support member 2 , and the other end of the elastic member 3 is welded to the horizontal cross brace 17 of the support assembly.

[0043] The wire pulling device includes a wire clamping box 6, a wire clamping slot 7 and a wire pulling handle 8. The wire clamping box 6 is connected to the supporting assembly. The wire clamping slot 7 is arranged in the wire clamping box 6. The wire pulling wire passes through the wire clamping box 6 and the wire clamping slot 7 and is connected to the wire pulling handle 8. One end of the wire pulling wire A10, the wire pulling wire B11 and the wire pulling wire C12 passes through the wire clamping box 6 and the wire clamping slot 7 and is connected to the wire pulling handle 8. The wire clamping slot 7 has an automatic wire clamping function. After being locked, the wire pulling wire A10, the wire pulling wire B11 and the wire pulling wire C12 are locked, so that the measuring piece 14 cannot be lowered. The ends of the wire pulling wire A10, the wire pulling wire B11 and the wire pulling wire C12 are uniformly connected to the wire pulling handle 8.

[0044] The detector is connected to the support assembly through a fixed baffle 9. The detector includes a goniometer A4 and a goniometer B5. A connecting member 141 is provided on the measuring member 14. The connecting member 141 is provided on the measuring member 14 in a cross shape. The center point of the connecting member 141 coincides with the center of the measuring member 14.

[0045] A method for using a bored pile hole verticality detection structure comprises the following steps:

[0046] S1: Measure the diameter and depth of the bored pile foundation pit, and make a measuring piece 14 that fits the inner wall of the foundation pit according to the size of the foundation pit;

[0047] S2: Make diagonal brace A15, diagonal brace B16, horizontal cross brace 17 and diagonal brace C18, and complete the connection of the support components, and set the bottom end of diagonal brace C18 on soil layer 1;

[0048] S3: placing the bottom support member 2 on the soil layer 1, placing the horizontal cross brace 17 in the vertical groove 201, and then installing the elastic member 3;

[0049] S4: Install the pulley 13 on the diagonal brace A15, diagonal brace B16 and horizontal cross brace 17 respectively;

[0050] S5: Install the wire extraction device, then install the wire A10, wire B11 and wire C12, connect the goniometer A4 to the diagonal brace A15 through the fixed baffle 9, and connect the goniometer B5 to the diagonal brace B16 through the fixed baffle 9;

[0051] S6: Determine whether the installation position, accuracy, elevation, etc. of each part meet the design requirements. If not, repeat the above installation steps until the calibration and installation are qualified to complete the installation of the detection structure;

[0052] S6: Determine whether the installation position, accuracy, elevation, etc. of each part meet the design requirements; if not, repeat the above installation steps until the calibration and installation are qualified to complete the installation of the detection structure;

[0053] S7: After installation, record the initial readings of goniometer A4 and goniometer B5, unlock the wire-drawing device and allow the measuring piece 14 to descend into the bored pile hole. When the measuring piece 14 is located at the bottom, middle and top of the bored pile hole, record the readings of goniometer A4 and goniometer B5 respectively. Take the average of three measurements for the readings at each position and compare the error between the average and the initial data to see if the error is less than or equal to the specification or design value. If it is less than the specification or design value, the bored pile hole is judged to be qualified. If not, use hole repair or other remedial measures until the verticality of the bored pile hole is qualified.

[0054] In step S4, the tangent line of the pulley 13 on the diagonal brace A15 is flush with the end of one end of the horizontal cross brace 17, and the tangent line of the pulley 13 on the diagonal brace B16 is flush with the end of the other end of the horizontal cross brace 17. A pulley 13 is arranged on each side of the center point of the horizontal cross brace 17.

[0055] In step S5 , the lengths of the pull wire A10 and the pull wire B11 are the same, the pull wire C12 is directly connected to the measuring piece 14 and does not contact the pulley 13 , and the connection points of the pull wire A10 , the pull wire B11 and the pull wire C12 with the pull wire handle 8 are all on the same side of the pull wire handle 8 .

Claims

1. A bored pile hole verticality detection structure, characterized by: The invention comprises a bottom support member (2), a measuring member (14), a support assembly, a pull wire, a detector and a wire drawing device, wherein the bottom support member (2) is connected to the support assembly, the measuring member (14) is connected to the support assembly via the pull wire, one end of the pull wire is connected to the wire drawing device, and the detector and the wire drawing device are arranged on the support assembly.

2. A bored pile hole verticality detection structure as claimed in claim 1, characterized in that: The support assembly comprises an oblique brace A (15), an oblique brace B (16), a horizontal cross brace (17) and an oblique brace C (18); one side of the horizontal cross brace (17) is connected to the oblique brace A (15); the other side of the horizontal cross brace (17) is connected to the oblique brace B (16); both ends of the horizontal cross brace (17) are respectively connected to the bottom support member (2); two oblique braces C (18) are provided; the top ends of the oblique brace A (15), the oblique brace B (16) and the two oblique braces C (18) are connected to each other; and a tension wire is connected to the horizontal cross brace (17).

3. A bored pile hole verticality detection structure as claimed in claim 2, characterized in that: Pulleys (13) are respectively arranged on the diagonal brace A (15), the diagonal brace B (16) and the horizontal cross brace (17); a hole (19) is arranged on one side of the horizontal cross brace (17) close to the bottom support member (2); and the pull wire passes through the hole (19) and penetrates the horizontal cross brace (17) for sliding connection.

4. A bored pile hole verticality detection structure as claimed in claim 3, characterized in that: The pull wires include a pull wire A (10), a pull wire B (11) and a pull wire C (12). The pull wire A (10) passes through a hole (19) on one side of a horizontal cross brace (17) and is then slidably connected to a pulley (13) on an oblique brace A (15) and a pulley (13) on a horizontal cross brace (17) in sequence. The pull wire B (11) passes through a hole (19) on the other side of a horizontal cross brace (17) and is then slidably connected to a pulley (13) on an oblique brace B (16) and a pulley (13) on a horizontal cross brace (17) in sequence.

5. A bored pile hole verticality detection structure as claimed in claim 1, characterized in that: The bottom support member (2) is L-shaped, a vertical groove (201) is provided on one side of the bottom support member (2), a hole (19) is provided at the bottom of the bottom support member (2), the pull wire passes through the bottom of the bottom support member (2) through the hole (19), and the measuring member (14) is in a circular ring shape.

6. A bored pile hole verticality detection structure as claimed in claim 5, characterized in that: An elastic member (3) is arranged on the bottom support member (2); one end of the elastic member (3) is connected to the bottom support member (2), and the other end of the elastic member (3) is connected to the support assembly.

7. A bored pile hole verticality detection structure as claimed in claim 1, characterized in that: The wire drawing device comprises a wire clamping box (6), a wire clamping slot (7) and a wire pulling handle (8); the wire clamping box (6) is connected to a supporting assembly; the wire clamping slot (7) is arranged in the wire clamping box (6); and the wire pulling wire passes through the wire clamping box (6) and the wire clamping slot (7) and is connected to the wire pulling handle (8).

8. A bored pile hole verticality detection structure as claimed in claim 1, characterized in that: The detector is connected to the support assembly via a fixed baffle (9), and comprises a goniometer A (4) and a goniometer B (5). A connecting member (141) is arranged on the measuring member (14), and the connecting member (141) is arranged on the measuring member (14) in a cross shape.

9. A method for using the bored pile hole verticality detection structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Measure the diameter and depth of the bored pile foundation pit; make a measuring piece (14) that fits the inner wall of the foundation pit according to the size of the foundation pit; S2: manufacturing diagonal brace A (15), diagonal brace B (16), horizontal cross brace (17) and diagonal brace C (18), and completing the connection of the support components, and setting the bottom end of the diagonal brace C (18) on the soil layer (1); S3: placing the bottom support member (2) on the soil layer (1), placing the horizontal cross brace (17) in the vertical groove (201), and then installing the elastic member (3); S4: Install the pulley (13) on the diagonal brace A (15), the diagonal brace B (16) and the horizontal cross brace (17) respectively; S5: Install the wire extraction device, then install the pull wire A (10), the pull wire B (11) and the pull wire C (12), connect the goniometer A (4) to the diagonal brace A (15) through the fixed baffle (9), and connect the goniometer B (5) to the diagonal brace B (16) through the fixed baffle (9); S6: Determine whether the installation position, accuracy, elevation, etc. of each part meet the design requirements; if not, repeat the above installation steps until the calibration and installation are qualified to complete the installation of the detection structure; S7: After installation is completed, the initial readings of the goniometer A (4) and the goniometer B (5) are recorded, the wire drawing device is unlocked to allow the measuring piece (14) to descend into the bored pile hole, and the readings of the goniometer A (4) and the goniometer B (5) are recorded when the measuring piece (14) is located at the bottom, middle, and top of the bored pile hole. The readings at each position are averaged three times, and the error between the average and the initial data is compared to determine whether the error is less than or equal to the specification or design value. If the error is less than the specification or design value, the bored pile hole is determined to be qualified; if not, hole repair or other remedial measures are taken until the verticality of the bored pile hole is qualified.

10. The method for using the bored pile hole verticality detection structure according to claim 9, characterized in that: In step S4, the external tangent line of the pulley (13) on the diagonal brace A (15) is flush with the end of one end of the horizontal cross brace (17), the external tangent line of the pulley (13) on the diagonal brace B (16) is flush with the end of the other end of the horizontal cross brace (17), and a pulley (13) is provided on each side of the center point of the horizontal cross brace (17). In step S5, the lengths of the pull wire A (10) and the pull wire B (11) are the same, the pull wire C (12) is directly connected to the measuring piece (14) and does not contact the pulley (13), and the connection points of the pull wire A (10), the pull wire B (11) and the pull wire C (12) with the pull wire handle (8) are all on the same side of the pull wire handle (8).

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