Positionable water mill drilling trepanning method and trepanning device for pier column

Abstract

The invention relates to a water mill drilling trepanning method and trepanning device for a pier column capable of positioning, and the trepanning method comprises the following steps: determining the drilling positions of a plurality of vertical preset prestressed holes in the pier column to be reinforced according to the distribution of reinforcing steel bars of the pier column to be reinforced, so that the preset prestressed holes can be prevented from passing through the reinforcing steel bars of the pier column to be reinforced; the possibility that steel bars of the single-column pier are affected in the drilling process is reduced, the drilling position of each preset prestress hole is determined to be located at the fixing position of the water mill drilling and tapping equipment corresponding to the pier column to be reinforced, so that after the water mill drilling and tapping equipment is fixed to the fixing position, accurate positioning of drilling positions of different heights is achieved, and the drilling efficiency is improved. The pre-stressed holes with different heights are drilled from top to bottom, the construction process is safer, and the pre-stressed holes are ensured to avoid steel bars of the pier column to be reinforced, the pre-stressed holes with different heights are accurately positioned, and the pre-stressed holes are drilled from top to bottom; and the safety of horizontal through drilling construction of the single-column pier through a water milling drilling construction method is ensured.

Description

Technical Field

[0001] This invention relates to the field of pier reinforcement technology, and in particular to a water-jet drilling method and drilling device for positioning piers. Background Technology

[0002] Currently, in the construction of urban bridges and highway reconstruction and expansion projects, single-column pier bridges, due to their unique single-column design, offer advantages such as smaller land occupation, improved substructure layout, increased visibility, and aesthetically pleasing bridge design, and are therefore widely used in urban interchanges and highway intersections. However, under extreme overloading and eccentric loading, single-column pier bridges suffer from insufficient torsional strength and weak lateral overturning resistance, potentially leading to bridge collapse and posing a threat to public safety. Therefore, bridge modifications are necessary. For example, adding steel cap beams above the single-column piers to support the upper beams requires the addition of horizontal prestressed steel bars in the transverse direction of the single-column pier, necessitating the drilling of prestressed holes at different heights at the top of the single-column pier.

[0003] In the current process of renovating single-column piers, it is necessary to build platforms or add structures, which requires drilling holes in the pier column as stress points. However, these holes are relatively shallow, have little impact on the single-column pier, and are relatively easy to drill. However, the prestressed holes penetrate through the top of the single-column pier. How to ensure that the drilling process does not affect the steel reinforcement of the single-column pier, how to ensure the horizontality of the drilling, how to ensure the accurate positioning of drilling positions at different heights, how to improve the overall positioning efficiency of all prestressed holes, and how to ensure the safety of the drilling process have become urgent problems to be solved.

[0004] Pier drilling is a key technology for upgrading the structural function and improving construction efficiency in highway reconstruction and expansion. Its application must be combined with project characteristics and specification requirements to ensure project safety and quality. There are many existing drilling methods. For shallow holes, ordinary drilling equipment can be used. However, for holes that need to penetrate the top of a single-column pier, it is necessary to reduce disturbance. Therefore, a water-jet drill can be used. However, existing water-jet drilling methods are mainly used for pile foundation construction. For example, CN116220552A discloses a water-jet drilling method and device for hard rock pile foundations. This device includes two uprights, with a circular track fixedly connected to the top of the two uprights. Two sliders are slidably mounted on the circular track, and their sliding direction is the circumference of the circular track. In this configuration, the two sliders are fixedly connected by a connecting rod located radially to the annular track. An adjusting block is slidably connected to the connecting rod, and a vertical rod is fixedly connected to the bottom of the adjusting block. An adjustable positioning block is connected to the vertical rod, and a water-grinding drill assembly is mounted on the side of the positioning block. By rotating the connecting rod, the water-grinding drill assembly can be rotated along the circumference of the pile foundation, thus facilitating the positioning of the pile foundation in the circumferential direction. After positioning, the water-grinding drill assembly can be pushed downwards to start drilling by pushing the positioning block downwards. This convenient operation achieves the beneficial effects of easy positioning and operation. However, the aforementioned devices and structures are used for vertical pile foundation construction and cannot be used for horizontal through-hole drilling construction at the top of single-column piers. Furthermore, they do not address issues such as high-altitude operations, existing reinforcement, drilling stability, and safety. Consequently, they cannot provide guidance for horizontal through-hole drilling construction at the top of single-column piers using water-jet drilling methods. This means that when horizontal through-hole drilling construction of single-column piers using water-jet drilling methods is required, existing technologies cannot solve the problems of the drilling process affecting the reinforcement of the single-column pier, ensuring the horizontality of the drilling, accurately positioning the drilling locations at different heights, improving the overall positioning efficiency of all prestressed holes, and ensuring the safety of the drilling process. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies that require water-jet drilling for horizontal through-hole drilling of single-column piers, such as the drilling process affecting the reinforcing steel of the single-column pier, difficulty in ensuring accurate positioning of drilling positions at different heights, difficulty in improving the overall positioning efficiency of all prestressed holes, and difficulty in ensuring the safety of the drilling process. This invention provides a water-jet drilling method and device for positioning pier columns.

[0006] In a first aspect, the present invention provides a water-jet drilling method for positioning pier columns, comprising the following steps:

[0007] S1. Determine the drilling positions of multiple pre-stressed vertical holes on the pier to be reinforced based on the distribution of the reinforcing bars. Then, determine the fixed position of the corresponding water-grinding drilling equipment on the pier to be reinforced based on the drilling position of each pre-stressed hole and the size of the water-grinding drilling equipment. S2. Drill holes at the fixed positions of the water-jet drilling equipment and insert positioning bolts; S3. Install the water-cooled drilling equipment on the positioning bolt corresponding to the drilling position of the uppermost prestressed hole; S4. Drill the pre-set prestressed hole at the top of the pier column to be reinforced using a water-cooled drilling machine. S5. After the pre-stressed holes above are drilled, move the water-grinding drilling equipment down and install it on the positioning bolt corresponding to the drilling position of the adjacent pre-stressed holes below. Then, use the water-grinding drilling equipment to drill the adjacent pre-stressed holes below the pier to be reinforced. S6. Repeat step S5 until the bottommost prestressed hole is drilled.

[0008] Preferably, step S1 is replaced by: determining the drilling positions of multiple pre-set vertical prestressed holes on the pier to be reinforced, and the fixed position of the corresponding water-jet drilling equipment on the pier to be reinforced, based on the distribution of the reinforcing bars of the pier to be reinforced and the size of the water-jet drilling equipment.

[0009] Preferably, in step S1, the location of the main reinforcement of the pier to be reinforced is initially determined by the existing design drawing of the pier to be reinforced, and then the location of the main reinforcement of the pier to be reinforced is determined by ultrasonic testing based on the initially determined location of the main reinforcement of the pier to be reinforced, so as to obtain the distribution of the reinforcement of the pier to be reinforced.

[0010] Preferably, the water-grinding drilling equipment includes a steel pad, a toothed track, a water-grinding drill, and a water bucket; The steel pad has bolt holes for connection with the positioning bolts. The steel pad can be fixed to the pier column to be reinforced by the positioning bolts. The toothed track includes a support beam and a toothed rail above the support beam. The support beam is set perpendicular to the steel pad. One end of the support beam is connected to the steel pad. The toothed rail is set continuously along the length of the support beam. The water-cooled drilling rig includes a main body, a drill rod, and a drill bit. The main body includes a housing, a transmission wheel, a rocker arm, and a motor. The transmission wheel is rotatably disposed within the housing, and the rocker arm can rotate to control the transmission wheel. The transmission wheel can mesh with the gear rail. The motor is fixedly disposed within the housing. The rear end of the drill rod is fixedly connected to the transmission shaft of the motor, and the front end of the drill rod is fixedly connected to the drill bit. The drill rod has a hollow tubular structure, and the drill bit is a hollow drill bit with teeth spaced circumferentially at its front end. The housing has a water inlet at the connection between the motor's drive shaft and the drill rod; the water bucket is hung on the bottom of the beam above the pier to be reinforced, and the water bucket is connected to the water inlet through a pump and a water supply pipe.

[0011] Preferably, in step S3, the step of installing the water-cooled drilling device onto the positioning bolt corresponding to the drilling position of the uppermost preset prestressed hole is as follows: S31. Fix the processed steel pad and toothed track as a whole to the positioning bolt at the fixed position corresponding to the drilling position of the uppermost preset prestressed hole; S32. Hang the bucket on the bottom of the beam above the pier to be reinforced; mesh the drive wheel of the drilling rig body with the toothed rail of the toothed track, then fix the drive shaft of the motor of the drilling rig body to the rear end of the drill rod, and then install the drill bit on the front end of the drill rod. S33. Connect the water bucket and the water inlet of the water-grinding drill through a pump and water supply pipe, so that the water in the bucket can flow through the water supply pipe, drill rod and drill bit to the drilling face.

[0012] Preferably, in steps S4 and S5, the step of drilling the pre-stressed holes of the pier to be reinforced using a water-cooled drilling machine includes the following cyclic steps: the water-cooled drilling machine is moved along the toothed track by rotating a rocker arm until the drill bit abuts the drilling position of the current pre-stressed hole. Then, the pump and motor are turned on, and the rocker arm is manually rotated to make the drill bit abut the drilling surface for drilling. When the drill rod is completely submerged in the pier to be reinforced, the pump and motor are turned off. The water-cooled drilling machine is then moved along the toothed track by rotating a rocker arm until the drill rod and drill bit are withdrawn. The drill bit is then removed to expose the concrete inside the drill rod. The concrete inside the drill rod is cleaned. A new section of drill rod is added to the front end of the drill rod, and then the drill bit is fixed to the front end of the new drill rod. Repeat the above cyclic steps until the drill bit penetrates the pier to be reinforced and forms a pre-stressed hole.

[0013] Preferably, the step of lowering and installing the water-jet drilling equipment onto the positioning bolt corresponding to the drilling position of the adjacent pre-set prestressed hole is as follows: Step 1: Manually control the water-cooled drilling rig to move away from the pier to be reinforced along the toothed track by rotating the rocker arm, and partially remove the drill rods that have penetrated the pre-stressed holes; then remove the drill rods that have been removed from the pre-stressed holes from the drilling rig body and the drill rods inside the pre-stressed holes; again, manually control the water-cooled drilling rig to move away from the pier to be reinforced along the toothed track by rotating the rocker arm, leaving space for the removed drill rods to be removed; then manually control the water-cooled drilling rig to move closer to the pier to be reinforced along the toothed track by rotating the rocker arm, and connect the drilling rig body to the end of the drill rods that extend out of the pre-stressed holes outside the pier to be reinforced; Step 2: Repeat the steps until all drill rods have been withdrawn and have penetrated the pre-stressed hole; Step 3: Secure the steel pad, toothed track, and water-grinding drill to the bottom of the beam above the pier to be reinforced using the lifting mechanism. Then, remove the connection between the steel pad and the positioning bolts. Next, lower the steel pad, toothed track, and water-grinding drill to a height where the steel pad can be connected to the positioning bolts corresponding to the drilling positions of the adjacent pre-stressed holes below. Then, connect the steel pad to the positioning bolts corresponding to the drilling positions of the current pre-stressed holes. Finally, release the fixing of the lifting mechanism to the steel pad, toothed track, and water-grinding drill.

[0014] Preferably, in step S1, after determining the drilling position and the fixing position, the corresponding hole positions of the drilling position and the fixing position are drawn on the pier to be reinforced by setting out.

[0015] Preferably, in step S1, the fixed position and the drilling position are misaligned in both the circumferential position and the horizontal height position of the pier to be reinforced. And / or, the diameter of the positioning bolt is 6mm-10mm, and the implantation depth of the positioning bolt is 8cm-10cm.

[0016] In a second aspect, the present invention provides a water-grinding drill hole-opening device for positioning pier columns, comprising a water-grinding drill hole-opening device and a plurality of positioning bolts, wherein the water-grinding drill hole-opening device comprises a steel pad, a toothed track, a water-grinding drill and a water bucket; The aforementioned positioning bolts are installed at different heights on the pier column to be reinforced; The toothed track includes a support beam and a toothed rail above the support beam. The support beam is arranged perpendicular to the steel pad, one end of the support beam is connected to the steel pad, and the toothed rail is continuously arranged along the length of the support beam. The water-powered drilling rig includes a main body, a drill rod, and a drill bit. The main body includes a housing, a transmission wheel, a rocker arm, and a motor. The transmission wheel is rotatably mounted inside the housing. The rocker arm can rotate to control the transmission wheel. The transmission wheel meshes with the gear rail. The motor is fixedly mounted inside the housing. The rear end of the drill rod is fixedly connected to the drive shaft of the motor. The front end of the drill rod is fixedly connected to the drill bit. The drill rod has a hollow tubular structure. The drill bit is a hollow drill bit with circumferentially spaced teeth at its front end. The housing has a water inlet at the connection between the drive shaft of the motor and the drill rod. The water bucket is hung at the bottom of the beam above the pier to be reinforced, and the water bucket is connected to the water inlet through a pump and a water supply pipe; The steel pad has bolt holes that connect to the positioning bolts. The steel pad can be fixed to the pier to be reinforced by the positioning bolts at different heights on the pier to be reinforced, so that the drill bit can be aligned with the drilling positions of the different preset prestressed holes on the pier to be reinforced.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention provides a water-jet drilling method for positioning pier columns. The method determines the drilling positions of multiple pre-set vertical prestressed holes on the pier column to be reinforced based on the distribution of the reinforcing bars. This avoids the pre-set prestressed holes passing through the reinforcing bars of the pier column, reducing the possibility of the drilling process affecting the reinforcing bars of the single-column pier. Since the fixed position of the water-jet drilling equipment and the drilling position are fixed, the fixed position of the water-jet drilling equipment on the pier column corresponding to the drilling position of each pre-set prestressed hole is determined according to the drilling position of each pre-set prestressed hole and the size of the water-jet drilling equipment. This ensures that after fixing the water-jet drilling equipment in the fixed position, its drilling position is consistent with the corresponding pre-set prestressed hole. The drilling location of the holes allows for precise positioning of the drilling positions at different heights. This method is highly efficient, requiring only the water-cooled drilling equipment to be fixed to the positioning bolts at the fixed positions corresponding to the pre-stressed hole drilling locations. By drilling pre-stressed holes at different heights from top to bottom, the lower pier section is a single load-bearing unit during the drilling of each pre-stressed hole, unaffected by pre-stressed holes already penetrated above, making the construction process safer. By ensuring that the pre-stressed holes avoid the reinforcing bars of the pier to be reinforced, the precise positioning of pre-stressed holes at different heights, and the drilling of pre-stressed holes from top to bottom, the safety of horizontal through-hole drilling of single-column piers using the water-cooled drilling method is guaranteed.

[0018] 2. This invention provides a water-cooled drilling device for positioning pier columns. Positioning bolts are installed at different heights on the pier column to be reinforced. The water-cooled drilling device includes a steel pad, a toothed track, a water-cooled drilling machine, and a water bucket. The steel pad has bolt holes for connection with the positioning bolts. The steel pad can be fixed to the pier column to be reinforced by the positioning bolts at different heights, allowing the drill bit to align with the drilling positions of different pre-set vertical pre-stressed holes on the pier column, thus enabling precise positioning during drilling of the pre-set vertical pre-stressed holes. Precise and fast, the toothed track is set perpendicular to the steel pad, and together with the transmission wheel of the water-jet drilling machine, it can ensure the horizontal feeding of the drill rod and drill bit, thereby ensuring that the drilling path is the same as the preset path, reducing the impact on the pier to be reinforced. In addition, the water bucket is connected to the housing of the water-jet drilling machine through the pump and water supply pipe at the connection between the transmission shaft of the motor and the drill rod. Water is supplied through the hollow tubular structure of the drill rod and the hollow drill bit, thereby reducing the drilling difficulty and drilling interference, and together ensuring the safety of horizontal through-hole drilling of single-column piers by water-jet drilling method. Attached Figure Description

[0019] Figure 1 A frontal view showing the locations of the pre-stressed holes and positioning bolts on the pier to be reinforced; Figure 2A frontal schematic diagram of a water-cooled drilling device for positioning piers drilling pre-stressed holes in a pier to be reinforced. Figure 3 A front view of the structure of a water-cooled drill hole-opening device for positioning pier columns; Figure 4 A side view of a water-cooled drilling device for positioning piers drilling pre-stressed holes in a pier to be reinforced.

[0020] Marked in the diagram: 1. Bucket; 2. Water supply pipe; 3. Positioning line; 4. Drill bit; 5. Pre-stressed hole; 6. Drill rod; 7. Water-powered drilling rig; 71. Drill rig body; 711. Drive wheel; 8. Rocker arm; 9. Toothed track; 91. Support beam; 92. Toothed track; 10. Steel pad; 11. Positioning bolt; 12. Pier to be reinforced; 13. Beam. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0022] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer," etc., used in the description of specific embodiments of the present invention to indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0023] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.

[0024] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0025] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0026] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to connection methods commonly used in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0027] Example 1 like Figures 1-4 As shown, a water-cooled drilling method for positioning pier columns includes the following steps: S1. Determine the drilling positions of multiple pre-stressed vertical holes 5 on the pier 12 to be reinforced based on the distribution of the reinforcing bars. This avoids the pre-stressed holes 5 passing through the reinforcing bars of the pier 12 to be reinforced, reducing the possibility of the drilling process affecting the reinforcing bars of the single-column pier. Since the fixed position of the water-jet drilling equipment and the drilling position are fixed, the fixed position of the water-jet drilling equipment on the pier 12 to be reinforced can be determined according to the drilling position of each pre-stressed hole 5 and the size of the water-jet drilling equipment. This ensures that after the water-jet drilling equipment is fixed in the fixed position, its drilling position is the corresponding drilling position of the pre-stressed hole 5, achieving precise positioning of drilling positions at different heights. This method has high positioning efficiency, and only requires fixing the water-jet drilling equipment on the positioning bolts 11 at the fixed position corresponding to the drilling position of the pre-stressed hole 5.

[0028] In an optional embodiment, step S1 is replaced by: simultaneously determining the drilling positions of multiple pre-set vertical prestressed holes 5 on the pier 12 to be reinforced, and the corresponding fixed position of the water-jet drilling equipment on the pier 12, based on the distribution of the reinforcing bars of the pier 12 to be reinforced and the size of the water-jet drilling equipment. Since the size of the water-jet drilling equipment is fixed, the positional relationship between the fixed position of the water-jet drilling equipment and the drilling position is fixed. Therefore, the drilling positions of the multiple pre-set vertical prestressed holes 5 and the fixed position of the water-jet drilling equipment can be considered simultaneously based on the distribution of the reinforcing bars of the pier 12 to be reinforced, thus avoiding any impact on the pier 12 from the insertion of the positioning bolts 11 at the fixed position of the water-jet drilling equipment, making the construction process safer.

[0029] In an optional implementation, in step S1, the position of the main reinforcement of the pier 12 to be reinforced is initially determined by the existing design drawing of the pier 12 to be reinforced, and then the position of the main reinforcement of the pier 12 to be reinforced is determined by ultrasonic testing based on the initially determined position of the main reinforcement of the pier 12 to be reinforced, so as to obtain the distribution of the reinforcement of the pier 12 to be reinforced.

[0030] In an optional implementation, after determining the drilling and fixing positions, the corresponding hole positions are marked on the pier 12 to be reinforced by setting out the layout. This facilitates further judgment on the accuracy of subsequent positioning, thereby ensuring the accuracy of drilling, reducing the impact on the pier 12 to be reinforced, and making construction safer. Figure 2 As shown, the drilling position can be marked using positioning line 3.

[0031] In an optional implementation, in step S1, as follows: Figure 1 and Figure 2As shown, the fixed position and the drilling position are misaligned in both the circumferential and horizontal positions of the pier 12 to be reinforced, thereby reducing the weakness of the pier 12 caused by the opening.

[0032] In an optional embodiment, the diameter of the positioning bolt 11 is 6mm-10mm and the implantation depth of the positioning bolt 11 is 8cm-10cm. While ensuring the stability of the water-jet drilling equipment, the impact on the pier column 12 to be reinforced is reduced, making the construction safer.

[0033] S2. Drill holes at the fixed position of the water-grinding drill and insert positioning bolts 11. The insertion of positioning bolts 11 serves two purposes: first, it guides the fixed position of the water-grinding drill and ensures the accuracy of the installation process, and also improves the installation efficiency of the water-grinding drill and ensures the stability of the subsequent drilling process.

[0034] In optional implementations, such as Figure 1 and Figure 2 As shown, the water-grinding drilling equipment includes a steel pad 10, a toothed track 9, a water-grinding drill 7, and a water bucket 1; The steel pad 10 has bolt holes for connection with the positioning bolts 11, and the steel pad 10 can be fixed to the pier column 12 to be reinforced by the positioning bolts 11. Figure 2 and Figure 3 For example, the steel pad 10 is a rectangular plate with bolt holes at its four corners. Each pre-stressed hole 5 corresponds to one of four positioning bolts 11, ensuring the accuracy and stability of the water-jet drilling equipment installation. This guarantees that the drilling of the pre-stressed holes 5 is essentially consistent with the pre-set parameters, making the drilling process safer. Figure 1 As shown, pre-stressed holes 5 need to be drilled on both sides of the pier 12 along the longitudinal direction of the bridge. The steel pad 10 is then fixed to four positioning bolts 11 to locate the pre-stressed holes 5. This location can also be corroborated by the positioning line 3 to ensure accurate positioning. Since the direction of the pre-stressed holes 5 is not the center of the circular pier 12 to be reinforced, the steel pad 10 must be close to... Figure 2 The steel pad 10 is installed on one side of the pier 12 to be reinforced, while the other side is not in contact. Therefore, when installing the steel pad 10, the side of the steel pad 10 that is in contact with the pier 12 to be reinforced is fixed first, and then the other side is fixed. This ensures that the steel pad 10 is perpendicular to the central axis of the pre-stressed hole 5, thus ensuring the accuracy of the drilling.

[0035] The toothed track 9 includes a support beam 91 and a toothed track 92 above the support beam 91. The support beam 91 is set perpendicular to the steel pad 10. One end of the support beam 91 is connected to the steel pad 10. The toothed track 92 is set continuously along the length of the support beam 91, providing a straight track for the water-grinding drill 7 along the central axis of the preset prestressed hole 5. The water-cooled drilling rig 7 includes a drilling rig body 71, a drill rod 6, and a drill bit 4. The drilling rig body 71 includes a housing, a transmission wheel 711, a rocker arm 8, and a motor. The transmission wheel 711 is rotatably disposed within the housing. The rocker arm 8 can rotate to control the transmission wheel 711. The transmission wheel 711 can mesh with the gear rail 92, allowing the rocker arm 8 to be manually rotated to control the transmission wheel 711 to move along the length of the gear rail 92. This causes the drill rod 6 and the drill bit 4 to move together along the straight line of the central axis of the preset prestressed hole 5, ensuring the accuracy of the feeding process and preventing drilling deviation. The motor is fixedly disposed within the housing. The rear end of the drill rod 6 is fixedly connected to the transmission shaft of the motor, and the front end of the drill rod 6 is fixedly connected to the drill bit 4, enabling the motor to control the synchronous rotation of the drill rod 6 and the drill bit 4 for drilling operations. The drill rod 6 is a hollow tubular structure, and the drill bit 4 is a hollow drill bit with teeth spaced circumferentially at its front end. The housing has a water inlet at the connection between the motor's drive shaft and the drill rod 6. The water bucket 1 is hung at the bottom of the beam 13 above the pier 12 to be reinforced, and the water bucket 1 is connected to the water inlet via a pump and a water supply pipe 2. The water bucket 1 supplies water to the drilling face through the pump, water supply pipe 2, water inlet, hollow tubular drill rod 6, and hollow drill bit, reducing drilling difficulty and interference.

[0036] S3. Install the water-cooled drilling equipment on the positioning bolt 11 corresponding to the drilling position of the uppermost prestressed hole 5; In step S3, the step of installing the water-cooled drilling equipment onto the positioning bolt 11 corresponding to the drilling position of the uppermost prestressed hole 5 is as follows: S31. Fix the processed steel pad 10 and toothed track 9 as a whole to the positioning bolt 11 at the fixed position corresponding to the drilling position of the uppermost prestressed hole 5, so as to provide a horizontal platform for the water grinding drill 7; fixing the steel pad 10 and toothed track 9 as a whole first is lightweight, easy to fix and has higher installation accuracy.

[0037] S32. Hang the bucket 1 on the bottom of the beam 13 above the pier 12 to be reinforced; mesh the drive wheel 711 of the drill body 71 with the toothed rail 92 of the toothed rail 9, then fix the rear end of the drill rod 6 to the drive shaft of the motor of the drill body 71, and then install the drill bit 4 at the front end of the drill rod 6, so that the drill body 71, the drill rod 6 and the drill bit 4 are installed in sequence, making the installation process simpler; S33. Connect the water tank 1 and the water inlet of the water-grinding drill 7 through the pump and water supply pipe 2, so that the water in the water tank 1 can flow to the drilling face through the water supply pipe 2, drill rod 6 and drill bit 4, supply water to the drilling face, reduce drilling difficulty and drilling interference.

[0038] The above steps of installing the water-jet drilling equipment on the positioning bolt 11 corresponding to the drilling position of the uppermost prestressed hole 5 reduce the installation difficulty of the pump, water supply pipe 2, water tank 1 and water-jet drilling machine 7, and improve the installation accuracy.

[0039] S4. Drill the pre-stressed hole 5 at the top of the pier 12 to be reinforced using a water-cooled drilling machine. In step S4, the process of drilling the pre-stressed holes 5 of the pier 12 to be reinforced using a water-cooled drilling machine includes the following cyclic steps: the water-cooled drilling machine 7 is moved along the toothed rail 92 by rotating the rocker arm 8 until the drill bit 4 abuts against the drilling position of the current pre-stressed hole 5. Then, the pump and motor are turned on (started by the connected power supply). The rocker arm 8 is manually rotated so that the drill bit 4 abuts against the drilling working surface to drill. When the drill rod 6 is completely submerged in the pier 12 to be reinforced, the pump and motor are turned off. The water-cooled drilling machine 7 is moved along the toothed rail 92 by rotating the rocker arm 8 until the drill rod 6 and drill bit 4 are withdrawn. The drill bit 4 is removed to expose the concrete inside the drill rod 6. The concrete inside the drill rod 6 is cleaned. A new section of drill rod 6 is added to the front end of the drill rod 6. The drill bit 4 is then fixed to the front end of the new drill rod 6. Repeat the above cyclic steps until drill bit 4 penetrates the pier column 12 to be reinforced to form a pre-stressed hole 5.

[0040] The above-mentioned method can remove concrete debris that falls during the drilling process, making drilling on the working face smoother. It also makes the drilling process of through holes easier and eliminates the need for long toothed tracks, making the operation simpler and safer.

[0041] S5. After the pre-stressed holes 5 above are drilled, the water-grinding drilling equipment is moved down and installed on the positioning bolt 11 corresponding to the drilling position of the adjacent pre-stressed holes 5 below. Then, the water-grinding drilling equipment is used to drill the adjacent pre-stressed holes 5 below the pier column 12 to be reinforced. The steps for moving the water-cooled drilling equipment down and installing it on the positioning bolt 11 corresponding to the drilling position of the adjacent pre-stressed hole 5 are as follows: Step 1: Manually control the water-grinding drill 7 to move away from the pier 12 to be reinforced along the toothed rail 92 by rotating the rocker arm 8, and remove part of the drill rod 6 that has penetrated the preset prestressed hole 5; then remove the connection between the drill rod 6 that has been removed from the preset prestressed hole 5 and the drill body 71 and the drill rod 6 inside the preset prestressed hole 5; then manually control the water-grinding drill 7 to move away from the pier 12 to be reinforced by rotating the rocker arm 8 again, leaving space for the removed drill rod 6 to be removed; then manually control the water-grinding drill 7 to move closer to the pier 12 to be reinforced by rotating the rocker arm 8 again, and connect the drill body 71 to the end of the drill rod 6 that extends out of the preset prestressed hole 5 outside the pier 12 to be reinforced. Step 2: Repeat the steps until all drill rods 6 have been withdrawn and have penetrated the pre-stressed hole 5; Step 3: Fix the steel pad 10, toothed track 9, and water-grinding drill 7 together by using the lifting mechanism installed at the bottom of the beam 13 above the pier 12 to be reinforced. Then, remove the connection between the steel pad 10 and the positioning bolt 11. Next, lower the steel pad 10, toothed track 9, and water-grinding drill 7 together using the lifting mechanism to a height where the steel pad 10 can be connected to the positioning bolt 11 corresponding to the drilling position of the adjacent prestressed hole 5 below. Then, connect the steel pad 10 to the positioning bolt 11 corresponding to the drilling position of the current prestressed hole 5. Finally, release the fixing of the lifting mechanism to the steel pad 10, toothed track 9, and water-grinding drill 7 together.

[0042] The step of moving the water-jet drilling equipment down and installing it on the positioning bolt 11 corresponding to the drilling position of the adjacent pre-stressed hole 5 below moves the entire water-jet drilling equipment down as a whole. The down-moving process is stable, safe, and simpler, reducing the complexity of operation.

[0043] In step S5, the process of drilling the pre-stressed holes 5 of the pier 12 to be reinforced using a water-cooled drilling machine includes the following cyclic steps: the water-cooled drilling machine 7 is moved along the toothed rail 92 by rotating the rocker arm 8 until the drill bit 4 abuts against the drilling position of the current pre-stressed hole 5. Then, the pump and motor are turned on, and the rocker arm 8 is manually rotated so that the drill bit 4 abuts against the drilling working surface to drill. When the drill rod 6 is completely submerged in the pier 12 to be reinforced, the pump and motor are turned off. The water-cooled drilling machine 7 is moved along the toothed rail 92 by rotating the rocker arm 8 until the drill rod 6 and drill bit 4 are withdrawn. Then, the drill bit 4 is removed to expose the concrete inside the drill rod 6. The concrete inside the drill rod 6 is cleaned. Then, a new section of drill rod 6 is added to the front end of the drill rod 6. Then, the drill bit 4 is fixed to the front end of the new drill rod 6. Repeat the above cyclic steps until drill bit 4 penetrates the pier column 12 to be reinforced to form a pre-stressed hole 5.

[0044] S6. Repeat step S5 until the bottommost prestressed hole 5 is drilled.

[0045] The above method employs drilling pre-stressed holes 5 at different heights from top to bottom. During the drilling of each pre-stressed hole 5, the lower pier section is a single load-bearing unit, unaffected by the pre-stressed holes 5 already drilled above, making the construction process safer. By ensuring that the pre-stressed holes 5 avoid the reinforcing bars of the pier 12 to be reinforced, accurately positioning the pre-stressed holes 5 at different heights, and drilling the pre-stressed holes 5 from top to bottom, the safety of horizontal through-hole drilling of single-column piers using the water-jet drilling method is guaranteed. Furthermore, it primarily targets... Figure 1 The drilling of the pre-stressed holes 5 on both the left and right sides can be carried out simultaneously using a water-cooled drilling machine on each side, or sequentially using a single water-cooled drilling machine. When only one water-cooled drilling machine is available, the uppermost pre-stressed hole 5 on one side can be drilled first, followed by the uppermost pre-stressed hole 5 on the other side, and so on downwards in a cyclical manner to maintain a balanced pattern. However, to improve the balance of the drilling, it is safer to use a separate water-cooled drilling machine on each side simultaneously.

[0046] Example 2 like Figures 2-4 As shown, a water-grinding drill hole-opening device for positioning pier columns can be used in a water-grinding drill hole-opening method for positioning pier columns in Embodiment 1. It includes a water-grinding drill hole-opening device and several positioning bolts 11. The water-grinding drill hole-opening device includes a steel pad 10, a toothed track 9, a water-grinding drill 7, and a water bucket 1. The positioning bolts 11 are installed at different heights on the pier 12 to be reinforced. The positioning bolts 11 serve to fix the water-grinding drilling equipment and to position the preset prestressed holes 5. The toothed track 9 includes a support beam 91 and a toothed track 92 above the support beam 91. The support beam 91 is perpendicular to the steel pad 10, and one end of the support beam 91 is connected to the steel pad 10. The toothed track 92 is continuously arranged along the length of the support beam 91. The water-grinding drill 7 includes a drill body 71, a drill rod 6, and a drill bit 4. The drill body 71 includes a housing, a transmission wheel 711, a rocker arm 8, and a motor. The transmission wheel 711 is rotatably disposed within the housing. The rocker arm 8 can rotate to control the transmission wheel 711. The transmission wheel 711 is engaged with the motor. The toothed rail 92 and the motor are fixedly installed inside the housing. The rear end of the drill rod 6 is fixedly connected to the drive shaft of the motor. The length and number of drill rods 6 are selected according to the length of the preset prestressed hole 5. For example, four drill rods are spared, each 1m long, which can be used to construct a 4m long preset prestressed hole 5. The front end of the drill rod 6 is fixedly connected to the drill bit 4. The drill rod 6 is a hollow tubular structure, and the drill bit 4 is a hollow drill bit with teeth spaced circumferentially at its front end. The drill bit 4 is selected according to the size of the preset prestressed hole. The housing is provided with a water inlet at the connection between the drive shaft of the motor and the drill rod 6. The water bucket 1 is hung on the bottom of the beam 13 above the pier 12 to be reinforced. The water bucket 1 is connected to the water inlet through a pump and a water supply pipe 2. The water bucket 1 can be a 10L mineral water bucket, which is low in cost. The diameter of the water supply pipe 2 is 10mm. The steel pad 10 has bolt holes that connect to the positioning bolts 11. The steel pad 10 can be fixed to the pier 12 to be reinforced by the positioning bolts 11 at different heights on the pier 12 to be reinforced, so that the drill bit 4 can be aligned with the drilling positions of the different preset prestressed holes 5 on the pier 12 to be reinforced, and ensure that the water-grinding drilling equipment is subjected to uniform force. This embodiment describes a water-cooled drilling device for positioning pier columns. Positioning bolts 11 are installed at different heights on the pier column 12 to be reinforced. The water-cooled drilling device includes a steel pad 10, a toothed track 9, a water-cooled drilling machine 7, and a water tank 1. The steel pad 10 has bolt holes for connection with the positioning bolts 11. The steel pad 10 can be fixed to the pier column 12 at different heights by the positioning bolts 11, allowing the drill bit 4 to align with the drilling positions of the vertically pre-set prestressed holes 5 on the pier column 12. This ensures accurate and rapid positioning during drilling of the vertically pre-set prestressed holes 5. The track 9 is set perpendicular to the steel pad 10. In conjunction with the transmission wheel 711 of the water-grinding drill 7, it can ensure the horizontal feeding of the drill rod 6 and the drill bit 4, thereby ensuring that the drilling path is the same as the preset path, reducing the impact on the pier 12 to be reinforced. The water bucket 1 is connected to the housing of the water-grinding drill 7 through the pump and the water supply pipe 2 at the connection between the transmission shaft of the motor and the drill rod 6. Water is supplied through the hollow tubular structure of the drill rod 6 and the hollow drill bit, which plays a role in cooling the drill bit, lubricating the drilling process, and carrying the drill cuttings out of the hole, thereby reducing the drilling difficulty and drilling interference, and jointly ensuring the safety of horizontal through-hole drilling of the single-column pier by water-grinding drilling method.

[0047] This invention addresses the problems that arise during pier drilling, such as the inability of conventional drilling rigs to accurately position the hole, leading to hole deviation and damage to the concrete structure due to the lack of use of water-cooled drills, as well as the difficulty in using water-cooled drills for drilling on piers. It effectively solves the problems of hole deviation and damage to the concrete structure during pier drilling, effectively completing the construction task while protecting the original concrete structure.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water-jet drilling method for positioning pier columns, characterized in that, Includes the following steps: S1. Determine the drilling positions of multiple pre-stressed vertical holes (5) on the pier (12) to be reinforced according to the distribution of the reinforcing bars. Then, determine the fixed position of the water-grinding drilling equipment corresponding to the drilling position of each pre-stressed hole (5) on the pier (12) to be reinforced according to the drilling position of each pre-stressed hole (5) and the size of the water-grinding drilling equipment. S2. Drill a hole at the fixed position of the water-grinding drilling equipment and insert a positioning bolt (11). S3. Install the water-cooled drilling equipment on the positioning bolt (11) corresponding to the drilling position of the uppermost prestressed hole (5); S4. Drill the pre-stressed hole (5) at the top of the pier (12) to be reinforced using a water-cooled drilling machine; S5. After the pre-stressed holes (5) above are drilled, the water-grinding drilling equipment is moved down and installed on the positioning bolt (11) corresponding to the drilling position of the adjacent pre-stressed holes (5) below. Then, the water-grinding drilling equipment is used to drill the adjacent pre-stressed holes (5) below the pier column (12) to be reinforced. S6. Repeat step S5 until the bottommost prestressed hole (5) is drilled.

2. The water-jet drilling method for positioning pier columns according to claim 1, characterized in that, Replace step S1 with: Based on the distribution of steel bars in the pier (12) to be reinforced and the size of the water-jet drilling equipment, simultaneously determine the drilling positions of multiple pre-stressed vertical holes (5) on the pier (12) to be reinforced, and the fixed position of the water-jet drilling equipment corresponding to the drilling position of each pre-stressed hole (5) on the pier (12) to be reinforced.

3. The water-jet drilling method for positioning pier columns according to claim 1, characterized in that, In step S1, the position of the main reinforcement of the pier (12) to be reinforced is initially determined by the existing design drawing of the pier (12) to be reinforced. Then, based on the initially determined position of the main reinforcement of the pier (12) to be reinforced, the position of the main reinforcement of the pier (12) to be reinforced is determined by ultrasonic testing to obtain the distribution of the reinforcement of the pier (12).

4. The water-jet drilling method for positioning pier columns according to claim 1, characterized in that, The water-grinding drilling equipment includes a steel pad (10), a toothed track (9), a water-grinding drill (7), and a water bucket (1). The steel pad (10) has bolt holes for connection with the positioning bolt (11). The steel pad (10) can be fixed to the pier (12) to be reinforced by the positioning bolt (11). The toothed track (9) includes a support beam (91) and a toothed track (92) above the support beam (91). The support beam (91) is set perpendicular to the steel pad (10). One end of the support beam (91) is connected to the steel pad (10). The toothed track (92) is set continuously along the length of the support beam (91). The water-grinding drill (7) includes a drill body (71), a drill rod (6), and a drill bit (4). The drill body (71) includes a housing, a transmission wheel (711), a rocker arm (8), and a motor. The transmission wheel (711) is rotatably disposed inside the housing. The rocker arm (8) can rotate to control the transmission wheel (711). The transmission wheel (711) can mesh with the gear rail (92). The motor is fixedly disposed inside the housing. The rear end of the drill rod (6) is fixedly connected to the transmission shaft of the motor. The front end of the drill rod (6) is fixedly connected to the drill bit (4). The drill rod (6) is a hollow tubular structure. The drill bit (4) is a hollow drill bit with teeth spaced circumferentially at the front end. The housing is provided with a water inlet at the connection between the drive shaft of the motor and the drill rod (6); the water bucket (1) is hung on the bottom of the beam (13) above the pier (12) to be reinforced, and the water bucket (1) is connected to the water inlet through a pump and a water supply pipe (2).

5. A water-jet drilling method for positioning pier columns according to claim 4, characterized in that, In step S3, the step of installing the water-cooled drilling equipment onto the positioning bolt (11) corresponding to the drilling position of the uppermost preset prestressed hole (5) is as follows: S31. Fix the processed steel pad (10) and toothed track (9) as a whole to the positioning bolt (11) at the fixed position corresponding to the drilling position of the uppermost preset prestressed hole (5); S32. Hang the bucket (1) on the bottom of the beam (13) above the column (12) to be reinforced; mesh the drive wheel (711) of the drill body (71) with the toothed rail (92) of the toothed rail (9); then fix the rear end of the drill rod (6) to the drive shaft of the motor of the drill body (71); and then install the drill bit (4) at the front end of the drill rod (6). S33. Connect the water bucket (1) and the water inlet of the water mill drill (7) through the pump and water supply pipe (2) so that the water in the water bucket (1) can flow to the drilling face through the water supply pipe (2), drill rod (6) and drill bit (4).

6. A water-jet drilling method for positioning pier columns according to claim 4, characterized in that, In steps S4 and S5, the steps of drilling the pre-stressed holes (5) of the pier (12) to be reinforced by the water-grinding drilling equipment include the following cyclic steps: the water-grinding drilling machine (7) is moved along the toothed rail (92) by rotating the rocker arm (8) to the drilling working surface where the drill bit (4) abuts the current drilling position of the pre-stressed hole (5), then the pump and motor are turned on, and the rocker arm (8) is manually rotated so that the drill bit (4) abuts the drilling working surface to drill. When the drill rod (6) is completely submerged in the pier (12) to be reinforced, the pump and motor are turned off, and the water-grinding drilling machine (7) is moved along the toothed rail (92) by rotating the rocker arm (8) to the drill rod (6) and the drill bit (4) are withdrawn. Then the drill bit (4) is removed to expose the concrete inside the drill rod (6), the concrete inside the drill rod (6) is cleaned, and a new section of drill rod (6) is added to the front end of the drill rod (6). Then the drill bit (4) is fixed to the front end of the new drill rod (6). Repeat the above cyclic steps until the drill bit (4) penetrates the pier (12) to be reinforced to form a pre-stressed hole (5).

7. A water-jet drilling method for positioning pier columns according to claim 4, characterized in that, The steps for moving the water-cooled drilling equipment down and installing it on the positioning bolt (11) corresponding to the drilling position of the adjacent pre-stressed hole (5) below are as follows: Step 1: Manually control the water-grinding drill (7) to move away from the pier (12) to be reinforced by rotating the rocker arm (8) along the toothed rail (92), and remove part of the drill rod (6) from the pre-stressed hole (5); then remove the connection between the drill rod (6) that has been removed from the pre-stressed hole (5) and the drill body (71) and the drill rod (6) inside the pre-stressed hole (5); then manually control the water-grinding drill (7) to move away from the pier (12) to be reinforced by rotating the rocker arm (8) along the toothed rail (92), leaving space for the removed drill rod (6) to be removed; then manually control the water-grinding drill (7) to move closer to the pier (12) to be reinforced by rotating the rocker arm (8) along the toothed rail (92), and connect the drill body (71) to the end of the drill rod (6) that extends out of the pre-stressed hole (5) outside the pier (12); Step 2: Repeat the steps until all drill rods (6) have been withdrawn and have penetrated the pre-stressed hole (5); Step 3: Fix the steel pad (10), toothed track (9), and water drill (7) as a whole by using the lifting mechanism installed at the bottom of the beam (13) above the pier (12) to be reinforced. Then remove the connection between the steel pad (10) and the positioning bolt (11). Then lower the steel pad (10), toothed track (9), and water drill (7) as a whole to the height at which the steel pad (10) can be connected to the positioning bolt (11) corresponding to the drilling position of the adjacent prestressed hole (5) below. Then connect the steel pad (10) to the positioning bolt (11) corresponding to the drilling position of the current prestressed hole (5). Then release the fixing of the lifting mechanism to the steel pad (10), toothed track (9), and water drill (7) as a whole.

8. A water-jet drilling method for positioning pier columns according to any one of claims 1-7, characterized in that, In step S1, after determining the drilling position and the fixing position, the corresponding hole positions of the drilling position and the fixing position are drawn on the pier (12) to be reinforced by setting out.

9. A water-jet drilling method for positioning pier columns according to any one of claims 1-7, characterized in that, In step S1, the fixed position and the drilling position are misaligned in both the circumferential and horizontal height positions of the pier (12) to be reinforced; And / or, the diameter of the positioning bolt (11) is 6mm-10mm, and the implantation depth of the positioning bolt (11) is 8cm-10cm.

10. A water-cooled drilling device for positioning pier columns, characterized in that, The device includes a water-grinding drill and several positioning bolts (11). The water-grinding drill includes a steel pad (10), a toothed track (9), a water-grinding drill (7), and a water bucket (1). The positioning bolts (11) are provided at different heights on the pier (12) to be reinforced; The toothed track (9) includes a support beam (91) and a toothed track (92) above the support beam (91). The support beam (91) is set perpendicular to the steel pad (10). One end of the support beam (91) is connected to the steel pad (10). The toothed track (92) is set continuously along the length of the support beam (91). The water-grinding drill (7) includes a drill body (71), a drill rod (6), and a drill bit (4). The drill body (71) includes a housing, a transmission wheel (711), a rocker arm (8), and a motor. The transmission wheel (711) is rotatably disposed inside the housing. The rocker arm (8) can rotate to control the transmission wheel (711). The transmission wheel (711) meshes with the gear rail (92). The motor is fixedly disposed inside the housing. The rear end of the drill rod (6) is fixedly connected to the transmission shaft of the motor. The front end of the drill rod (6) is fixedly connected to the drill bit (4). The drill rod (6) is a hollow tubular structure. The drill bit (4) is a hollow drill bit with teeth spaced circumferentially at its front end. The housing has a water inlet at the connection between the transmission shaft of the motor and the drill rod (6). The water bucket (1) is hung on the bottom of the beam (13) above the pier (12) to be reinforced, and the water bucket (1) is connected to the water inlet through a pump and a water supply pipe (2); The steel pad (10) has bolt holes that connect to the positioning bolts (11). The steel pad (10) can be fixed to the pier (12) to be reinforced by the positioning bolts (11) at different heights on the pier (12) to be reinforced, so that the drill bit (4) can be aligned with the drilling positions of the vertically different preset prestressed holes (5) on the pier (12) to be reinforced.

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