Rapid positioning and deviation rectifying device for cast-in-situ bored pile casing and using method of rapid positioning and deviation rectifying device
Through the combined device of laser indication and force transmission monitoring, the rapid and accurate positioning and real-time deviation correction of the drilled pile guard is achieved, which solves the problems of insufficient positioning accuracy and insufficient verticality monitoring in traditional methods, and improves construction efficiency and quality.
Patent Information
- Application Number
- CN202510556627.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2025-07-08
AI Technical Summary
In the prior art, the positioning accuracy of the drilling pile guard is insufficient, and the verticality cannot be monitored and corrected in real time, resulting in low construction quality and efficiency.
The laser emitter is used to form a cross line to indicate the center of the pile position, and the force transmission assembly and monitoring unit are combined to monitor the tilt in real time. It is fixed by the positioning screw and adjust the level by using the leveler to achieve rapid and accurate positioning of the guard and real-time deviation correction.
It improves the positioning accuracy and verticality of the cartridge, reduces measurement and rework time, and improves construction efficiency and project quality.
Smart Images
Figure CN120273368A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of pile foundation construction in civil engineering, and particularly relates to a quick positioning and deviation correction device for a casing of a bored cast-in-place pile and a using method thereof. Background Technique
[0002] In modern construction projects and infrastructure construction, bored cast-in-place piles are widely used as an important foundation form. The bearing capacity and stability of the pile foundation largely depend on its construction quality, especially the pile position accuracy and the verticality of the pile body. As the first process component in the construction of bored cast-in-place piles, the plane position accuracy and verticality of the casing embedding directly affect the quality of subsequent drilling, steel cage lowering, and concrete pouring, and play a decisive role in the performance of the final pile foundation.
[0003] At present, there are mainly two traditional casing positioning methods: The first one is to use surveying instruments such as GPS to measure and release the center point of the pile position, mark the pile foundation contour line on the ground with lime or paint, and then place and drive the casing according to the contour line. The disadvantages of this method are: the marked contour line is often relatively thick, resulting in low initial positioning accuracy; and during the driving process of the casing, it is impossible to monitor in real time whether the casing is tilted, and it is also difficult to carry out effective real-time deviation correction.
[0004] The second method is to make a ring with the same diameter as the pile foundation using metal wire, and set crossed metal wires inside the ring to mark the center of the circle. Place this ring on the measured center point of the pile position so that the center of the ring coincides with the center of the pile position, and use this as the basis for casing positioning. The disadvantages of this method are: the metal wire at the center of the ring is easily collided and displaced during the placement or driving process of the casing, introducing positioning errors; similarly, this method also cannot monitor and correct the verticality of the casing in real time during the driving process.
[0005] Both of the above two traditional methods have the problems of limited positioning accuracy and inability to monitor and correct the verticality in real time during the driving process, which may lead to casing tilt and pile position deviation, affecting the pile forming quality, and even requiring rework, thus reducing the construction efficiency and prolonging the construction period. Therefore, it is urgent to develop a device and method that can achieve quick and accurate positioning of the casing and monitor and correct the verticality in real time during the driving process to improve the construction quality and efficiency of the pile foundation. Summary of the Invention
[0006] Object of the Invention: The object of the present invention is to provide a quick positioning and deviation correction device for a casing of a bored cast-in-place pile and a using method thereof in view of the deficiencies of the prior art, which can achieve quick and accurate plane positioning before the casing driving, and monitor the change of its verticality in real time during the casing driving process, providing a basis for deviation correction for the operator, thereby effectively ensuring the embedding accuracy and verticality of the casing, and improving the construction efficiency and the quality of the pile foundation.
[0007] Technical solution: The rapid positioning and deviation correction device for the bored cast-in-place pile casing of the present invention includes: A positioning ring frame, around which a number of support rods are evenly provided, and the inner diameter of the positioning ring frame is suitable for accommodating the casing to be driven; At least two laser emitters, configured to emit laser beams that intersect to form a crosshair, and the intersection point of the crosshair is used as an indication mark for aligning with the center point of the pile position; Positioning screws, which are adapted to the number of the support rods, and are configured to be screwed into the soil layer to fix the positioning ring frame at the pile position; A force transmission component, one end of which is fixedly connected to the support rod, and the other end is connected to the positioning screw, and is used for transmitting the extrusion force of the casing; A monitoring unit, installed on the force transmission component, and configured to monitor the change in the force received by the force transmission component when the casing tilts and squeezes the positioning ring frame during the driving process of the casing, so as to indicate the tilting direction and degree of the casing; An equalizing sleeve assembly, arranged between the force transmission component and the positioning screw, and the equalizing sleeve assembly is used to adjust the initial force receiving state of the force transmission component before the casing is driven; A spirit level, arranged on the positioning ring frame, and is used to indicate the horizontal state of the positioning ring frame.
[0008] To further improve the above technical solution, the force transmission component is a force transmission spring, and the monitoring unit is a deformation stress gauge.
[0009] Further, the equalizing sleeve assembly includes: a spring connecting piece connected to the force transmission spring, a positioning screw connecting piece connected to the positioning screw, an adjusting sleeve, and a collar; the spring connecting piece and the positioning screw connecting piece have threads with opposite rotation directions, and are both in threaded cooperation with the adjusting sleeve, and the collar is fixedly connected to the positioning screw; by rotating the adjusting sleeve, the distance between the spring connecting piece and the positioning screw connecting piece can be changed to adjust the initial force receiving state of the force transmission spring, so that the initial readings of a number of the deformation stress gauges are kept consistent.
[0010] Further, the positioning screw includes a disassembly and assembly wrench, a pin shaft, and a screw rod, and the screw rod passes through the collar of the equalizing sleeve assembly and is screwed into the soil layer to fix the positioning ring frame.
[0011] Further, the number of the laser emitters is two, and the two laser emitters are located at one end of two orthogonal diameters of the positioning ring frame, and a groove is provided on the inner wall of the positioning ring frame corresponding to the other end of the diameter as the laser calibration line, and the lasers emitted by the two laser emitters form a crosshair to position the center of the pile position.
[0012] Furthermore, the number of the support rods is four, and they are evenly arranged circumferentially along the positioning ring frame together with the laser emitter and its laser calibration line; the number of the positioning screws, the force transmission components, the monitoring units, and the equalizing sleeve components is set corresponding to the number of the support rods, all being four.
[0013] Furthermore, the positioning ring frame is made of a steel ring.
[0014] Furthermore, the spirit level is fixedly installed on the upper mouth plane of the positioning ring frame, and the indicating surface of the spirit level is parallel to the upper mouth plane of the positioning ring frame.
[0015] The present invention also provides a method for quickly positioning and rectifying the deviation of the casing of a bored cast-in-place pile by using the above device, including the following steps: Use GPS to measure the center of the pile position and mark it on the ground; Place the quick positioning and deviation rectifying device for the casing of the bored cast-in-place pile near the center point of the pile position to be constructed; Start the laser emitter to emit laser to form a cross line, and move the positioning ring frame to align the intersection point of the cross line with the preset center point of the pile position; Screw the positioning screw into the soil layer to fix the positioning ring frame; Adjust the equalizing sleeve assembly to make the initial readings of several monitoring units balanced; Adjust the positioning ring frame to a horizontal state with reference to the spirit level; Lift and erect the casing within the positioning ring frame; Use a pile driver to drive the casing into the formation; During the driving process, continuously monitor the readings of several monitoring units; When it is monitored that the reading of a certain monitoring unit changes by a predetermined amount, indicating that the casing is tilted, adjust the posture of the casing to rectify the deviation until the casing is driven to the predetermined depth.
[0016] After the driving is completed, disassemble the positioning screw, recover the device and continue construction at the next pile position.
[0017] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows: (1) Precise and rapid positioning: The indication mark formed by the laser emitter is aligned with the center point of the ground pile position. The positioning process is intuitive, rapid and has high precision, overcoming the problem of insufficient positioning precision of traditional marking or wire positioning.
[0018] (2) Real-time monitoring and correction: Through the combination of the force transmission component (spring) and the monitoring unit (deformation stress gauge), the inclination state of the casing can be sensed in real time during the casing installation process, and the degree of inclination can be quantified as a change in readings, providing the operator with clear correction signals and directional guidance, effectively ensuring the verticality of the casing.
[0019] (3) Improve construction efficiency: Rapid positioning and real-time deviation correction reduce the time for measurement and rework, increase the speed of single pile casing installation, and thus shorten the overall construction period.
[0020] (4) Ensure project quality: Accurate casing positioning and verticality are important guarantees for the quality of subsequent drilling and pile formation, and help improve the quality and reliability of the entire pile foundation project.
[0021] (5) Simple and practical structure: The device has a relatively simple structure, is easy to operate, and is easy to promote and apply on construction sites. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 is a schematic diagram of a positioning ring frame in Example 1 of the present invention; Figure 2 It is a schematic diagram of the partial arrangement and working principle of the laser infrared emitter in Example 1 of the present invention; Figure 3 is a schematic structural diagram of a balancing sleeve assembly in Embodiment 1 of the present invention; Figure 4 It is a schematic diagram of the structure of the connection between the positioning screw, the balancing sleeve assembly and the force transmission spring in Example 1 of the present invention; Figure 5 is a schematic structural diagram of the positioning screw in Example 1 of the present invention; Figure 6 is an overall axonometric diagram of the rapid positioning and deviation correction device provided in Example 1 of the present invention; Figure 7 is a top view of the rapid positioning and deviation correction device provided in Example 1 of the present invention; Figure 8 This is a side view of the rapid positioning and deviation correction device provided in Example 1 of the present invention. Figure 1 (The groove faces forward); Figure 9 This is a side view of the rapid positioning and deviation correction device provided in Example 1 of the present invention. Figure 1 (Laser infrared emitter facing forward); Figure 10 It is a schematic diagram of the method flow provided in Example 2 of the present invention.
[0023] Explanation of the reference numerals: 1-positioning ring frame; 2-laser infrared transmitter; 3-force transmission spring; 4-deformation stress gauge; 5-balancing sleeve assembly; 6-positioning screw; 7-level; 8-support rod. Detailed implementation manners
[0024] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the described embodiments.
[0025] Embodiment 1: Please refer to Figures 1 to 9 , this embodiment provides a quick positioning and deviation correction device for a bored cast-in-place pile casing, mainly including a positioning ring frame 1, a laser infrared emitter 2, a force transmission spring 3, a deformation stress gauge 4, an equalizing sleeve assembly 5, a positioning screw 6, and a level 7.
[0026] Referring to Figure 1 , Figure 2 and Figure 6 , the positioning ring frame 1 is made of a steel ring with a certain thickness and height, and its inner diameter is slightly larger than the outer diameter of the casing 10 to be buried, and this difference should be less than the allowable value of the pile position deviation required by relevant specifications to ensure that the casing has a guiding effect and a certain moving space after being placed. The positioning ring frame 1 is the base of the entire device and is used to initially define the planar position of the casing. Around the positioning ring frame 1, a number of (4 in this embodiment) support structures for connecting other components are evenly arranged, such as Figure 1 the radially outward extending support rod 8 shown in
[0027] Referring to Figure 2 and Figure 6 , two laser infrared emitters 2 are installed on the outer wall of the positioning ring frame 1 and are respectively located at one end of two mutually orthogonal diameters on the positioning ring frame 1. Grooves are provided on the inner wall of the positioning ring frame 1 corresponding to the other end of the diameter as laser calibration lines 22, as shown in Figure 2 , to ensure that the laser beam is accurately projected along the diameter. The laser beam 21 emitted by each laser emitter 2 is calibrated to ensure that it is emitted along the diameter direction of the positioning ring frame 1. The two orthogonal laser beams will form a cross line on the ground, and the intersection point thereof is the center point of the device, which is used for quickly and accurately aligning with the center point 11 of the pile position measured on the ground.
[0028] Referring to Figure 3 , Figure 6 and Figure 7 , the force transmission spring 3 is used to transmit the lateral force generated when the casing is tilted. In a preferred embodiment, four force transmission springs 3 are provided and are respectively connected to the four support rods 8 of the positioning ring frame 1. One end of each force transmission spring 3 is fixedly connected to the support rod of the positioning ring frame 1, and the other end is connected to the equalizing sleeve assembly 5.
[0029] The deformation stress gauge 4 is used to monitor the tilting condition during the driving process of the casing in real time. As shown in Figure 4 , Figure 6As shown, a deformation stress gauge 4 (a total of 4) is installed on each force transmission spring 3. When the casing inclines during the driving process, one side of it will squeeze the positioning ring frame 1, causing the force transmission spring 3 on that side to be compressed and deformed. The deformation stress gauge 4 installed on it will then monitor this deformation (stress change), and it is usually reflected by the change in the reading, usually an increase in the reading. The magnitude of the reading change is related to the degree of inclination, and the position of the reading change indicates the direction of inclination.
[0030] The equalizing sleeve assembly 5 is used to adjust the initial stress state of the force transmission spring 3 before the casing is driven, so that the initial readings of the four deformation stress gauges 4 can be adjusted to be consistent (such as zeroing or a certain reference value). As Figure 3 shown, each equalizing sleeve assembly 5 includes three components: a spring connecting piece 51, an adjusting sleeve 52, a positioning screw connecting piece 53, and a collar 54. One end of the spring connecting piece 51 is connected to the force transmission spring 3, and the positioning screw connecting piece 53 is connected to the positioning screw 6 through the collar 54. The spring connecting piece 51 and the positioning screw connecting piece 53 are respectively provided with threads with opposite helix directions (one right-handed thread and one left-handed thread), and both are matched with the internal threads of the middle adjusting sleeve 52. By rotating the adjusting sleeve 52, the spring connecting piece 51 and the positioning screw connecting piece 53 are relatively close to or away from each other, so as to adjust the initial length (pre-tightening force) of the force transmission spring 3, achieving the purpose of adjusting the initial reading of the deformation stress gauge 4.
[0031] Refer to Figures 4 to 9 , the positioning screw 6 is used to firmly fix the entire positioning and deviation correction device on the ground. Each positioning screw 6 consists of a screw rod 63, a pin shaft 62, and a disassembly and assembly wrench 61 (or a structure used for the wrench function) at the top. The diameter of the pin shaft 62 is matched with the inner diameter of the collar 54 on the positioning screw connecting piece of the equalizing sleeve assembly 5. During use, the positioning screw 6 is passed through the collar 54, and then the disassembly and assembly wrench 61 is turned to screw the screw rod into the soil layer. When the depth of the screw rod 63 screwed into the soil layer makes the pin shaft 62 exactly at the height of the collar 54, stop turning. At this time, the positioning screw 6 reliably anchors the positioning ring frame 1 on the ground through the equalizing sleeve assembly 5, etc. Usually, four positioning screws 6 are provided, corresponding to the force transmission springs 3, etc., and are symmetrically arranged along the circumferential direction of the positioning ring frame 1.
[0032] Refer to Figure 6 and Figure 7 , the spirit level 7 is fixedly installed on the upper mouth plane of the positioning ring frame 1 or an easy-to-observe position, and its indicating surface is parallel to the upper mouth plane of the positioning ring frame 1. By observing the position of the bubble of the spirit level 7, it can be judged whether the positioning ring frame 1 is in a horizontal state, and adjustments can be made during installation and fixation to ensure that the subsequent positioning and deviation correction reference is accurate.
[0033] Example 2: Combine Figure 10Based on the device structure provided in Embodiment 1, the usage method provided by the present invention will be described in detail: Step 1: Laying out the center point of the pile position. Using surveying equipment such as total station or GPS, accurately measure the designed center point of the pile position and make clear marks on the ground.
[0034] Step 2: Installing and adjusting the positioning and deviation correction device.
[0035] ① Carry the assembled positioning and deviation correction device to the vicinity of the marked center point of the pile position.
[0036] ② Turn on the two laser infrared emitters 2. At this time, a cross line formed by two laser beams will appear on the ground.
[0037] ③ Carefully move the entire device and observe the intersection point of the laser cross line to make it completely coincide with the marked center point of the pile position on the ground.
[0038] ④ After confirming that the position is correct, use a disassembly and assembly wrench to turn the four positioning screws 6 and screw their screw rod parts into the soil layer until the entire device is firmly fixed on the ground.
[0039] ⑤ According to needs, rotate the adjustment sleeves of the four equalizing sleeve assemblies 5 and observe the readings of the deformation stress gauges 4 connected to them, and adjust all the readings to the same initial state, such as zeroing or setting a reference value.
[0040] ⑥ Observe the spirit level 7 again. If the positioning ring frame 1 is not in a horizontal state, fine adjustment can be carried out by slightly adjusting the screwing depth of each positioning screw 6 or padding thin sheets under the ring frame until the spirit level 7 shows horizontal.
[0041] Step 3: Driving and correcting the casing.
[0042] After the positioning and deviation correction device is installed and leveled, use a lifting device (such as a crane) to lift the casing and slowly lower it vertically into the interior of the positioning ring frame 1. Since the position and level of the positioning ring frame 1 have been accurately adjusted, the initial plane position and vertical attitude of the casing basically meet the requirements at this time.
[0043] Then, use a special pile driver or other driving equipment to start driving the casing into the formation.
[0044] During the driving process, the construction workers need to monitor the display readings of the four deformation stress gauges 4 in real time. If it is found that the readings of the deformation stress gauges 4 on one side (or two adjacent sides) are significantly increased, exceeding the allowable range or the initial reference value, it indicates that the casing is tilting towards this side. At this time, the driving should be paused or slowed down, and the pile driving equipment should be operated or other auxiliary measures should be taken to adjust the casing towards the opposite direction of the tilting direction (i.e., the side where the reading has not increased or has increased less) until the increased reading drops back to the normal range. Then continue to drive downwards. Repeat this monitoring-adjustment (deviation correction) process until the casing is driven to the designed depth, and finally the readings of each deformation stress gauge 4 are basically restored to balance or within the allowable minor deviation range, indicating that the perpendicularity of the casing is qualified.
[0045] Step 4: Remove the positioning and deviation correction device.
[0046] After the casing driving is completed and confirmed to be qualified, reverse the disassembly and assembly wrench of the positioning screw 6 to screw out the positioning screw 6 from the soil layer, and then remove the entire positioning and deviation correction device, preparing for the construction of the next pile position.
[0047] Step 5: End. The casing driving work for this pile position is completed. Move the positioning and deviation correction device to the next pile position and repeat Steps 2 to 4 for the casing construction of the subsequent pile foundations.
[0048] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation of the present invention itself. Various changes can be made in its form and details without departing from the spirit and scope of the present invention defined by the appended claims.
Claims
1. A quick positioning and deviation correction device for a casing of a bored cast-in-place pile, characterized in that, Comprising: A positioning ring frame, around which a number of support rods are evenly provided, and the inner diameter of the positioning ring frame is suitable for accommodating the casing to be driven; At least two laser emitters configured to emit laser beams that intersect to form a crosshair, and the intersection point of the crosshair is used as an indication mark for aligning with the center point of the pile position; Positioning screws, which are adapted to the number of the support rods and configured to be screwed into the soil layer to fix the positioning ring frame at the pile position; A force transmission component, one end of which is fixedly connected to the support rod and the other end is connected to the positioning screw, for transmitting the extrusion force of the casing; A monitoring unit installed on the force transmission component and configured to monitor the change in the force received by the force transmission component when the casing tilts and squeezes the positioning ring frame during the driving process of the casing, so as to indicate the tilt direction and degree of the casing; An equalizing sleeve assembly provided between the force transmission component and the positioning screw, and the equalizing sleeve assembly is used to adjust the initial force receiving state of the force transmission component before the casing is driven; A spirit level provided on the positioning ring frame for indicating the horizontal state of the positioning ring frame.
2. The rapid positioning and deviation correction device for the casing of bored cast-in-place piles according to claim 1, wherein: The force transmission component is a force transmission spring, and the monitoring unit is a deformation stress gauge.
3. The quick positioning and deviation correction device for the casing of bored cast-in-place piles according to claim 2, characterized in that: The equalizing sleeve assembly includes: a spring connecting piece connected to the force transmission spring, a positioning screw connecting piece connected to the positioning screw, an adjusting sleeve and a collar; the spring connecting piece and the positioning screw connecting piece have threads with opposite rotation directions and are both threadedly engaged with the adjusting sleeve, and the collar is fixedly connected to the positioning screw; by rotating the adjusting sleeve, the distance between the spring connecting piece and the positioning screw connecting piece can be changed to adjust the initial force receiving state of the force transmission spring, so that the initial readings of a number of the deformation stress gauges are kept consistent.
4. The quick positioning and deviation correction device for the casing of bored cast-in-place pile according to claim 2, characterized in that: The positioning screw includes a disassembly and assembly wrench, a pin shaft and a screw rod. The diameter of the pin shaft of the positioning screw matches the inner diameter of the collar of the equalizing sleeve assembly. The screw rod of the positioning screw passes through the collar of the equalizing sleeve assembly and is screwed into the soil layer, and the depth of screwing into the soil layer is such that the pin shaft is exactly at the height of the collar to fix the positioning ring frame.
5. The quick positioning and deviation correction device for the casing of bored cast-in-place pile according to claim 4, characterized in that, The number of the laser emitters is two, and the two laser emitters are located at one end of two orthogonal diameters of the positioning ring frame. A groove is provided on the inner wall of the positioning ring frame corresponding to the other end of the diameter as the laser calibration line. The lasers emitted by the two laser emitters form a crosshair to locate the center of the pile position.
6. The quick positioning and deviation correction device for the casing of bored cast-in-place pile according to claim 5, characterized in that, The number of the support rods is four, and they are evenly arranged along the circumferential direction of the positioning ring frame together with the laser emitters and their laser calibration lines; the number of the positioning screws, the force transmission components, the monitoring units and the equalizing sleeve assemblies is set corresponding to the number of the support rods, all being four.
7. The rapid positioning and deviation correction device for the casing of bored cast-in-place piles according to claim 1, wherein, The positioning ring frame is made of a steel ring.
8. The quick positioning and deviation correction device for the casing of bored cast-in-place piles according to claim 1, characterized in that, The spirit level is fixedly installed on the upper mouth plane of the positioning ring frame, and the indicating surface of the spirit level is parallel to the upper mouth plane of the positioning ring frame.
9. The method of using the quick positioning and deviation correction device for the casing of bored cast-in-place piles according to claim 1, characterized in that, Including the following steps: Using GPS to determine the center point of the pile position and marking it on the ground; Placing the quick positioning and deviation correction device for the bored cast-in-place pile casing near the center point of the pile position to be constructed; Start the laser emitter to emit laser to form a cross line, and move the positioning ring frame to align the intersection point of the cross line with the preset center point of the pile position; Screw the positioning screw into the soil layer to fix the positioning ring frame; Adjust the equalizing sleeve assembly to equalize the initial readings of several monitoring units; Adjust the positioning ring frame to a horizontal state with reference to the level; Lift and erect the casing within the positioning ring frame; Use a driving and extracting machine to drive the casing into the formation; During the driving process, continuously monitor the readings of several monitoring units; When it is detected that the reading of a certain monitoring unit changes pre - determinedly, indicating that the casing is tilted, adjust the attitude of the casing for deviation correction until the casing is driven to the predetermined depth; After the driving is completed, remove the positioning screw, recover the device and continue construction at the next pile position.
10. The usage method according to claim 9, characterized in that, The deviation correction operation includes: when it is detected that the reading of a certain monitoring unit increases, adjust the casing in the opposite direction of the monitoring unit.