Reinforced concrete anchor rod static pressure pile cutting device
By designing a pile cutting device for static pressing piles of reinforced concrete anchors, using drilling core technology and water-adding cooling device, the problem of loose and fragmented concrete on the pile top in the existing pile cutting method is solved, and a more efficient pile cutting process is achieved, and the integrity and seismic resistance of the structure are enhanced.
Patent Information
- Application Number
- CN202421847773.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-01
AI Technical Summary
The existing method of static pressing pile cutting of reinforced concrete anchor rods is directly chiseled with a pneumatic pick, resulting in the pile top concrete being easily loosened and broken, the pile body integrity is not protected, and the work efficiency is low.
A reinforced concrete anchor rod static press pile cutting device is designed, including a foundation bearing and prefabricated square piles, and the excess part of the top of the prefabricated square pile is cut through drilling and core extraction. The core assembly is removable and installed, with a water refueling mechanism inside the drill rod to cool down, the core hole is overlapped to retain the longitudinal ribs, and the fixing assembly is used to protect the prefabricated square piles.
It effectively solves the problem of loose and broken concrete on the pile top after the pile cutting, retains the integrity of the top of the prefabricated square pile, improves work efficiency, reduces construction costs, and enhances the continuity and seismic performance of the structure.
Smart Images
Figure CN222908792U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reinforced concrete anchor jacked piles, and specifically, to a pile cutting device for reinforced concrete anchor jacked piles. Background Art
[0002] Reinforced concrete anchor jacked piles are an engineering method used for strengthening or supporting structural foundations, especially suitable for situations with complex geological conditions, low bearing capacity, or the need for building reinforcement and repair. When the pile tip bearing layer and the jacking depth both meet the design requirements but the pile top elevation has not reached the design elevation, the exposed pile head needs to be cut off.
[0003] Currently, the conventional pile cutting method is to directly chisel it manually in combination with a pneumatic pick. After the pile cutting is completed by this method, the concrete at the pile top is prone to looseness and fragmentation, the integrity of the pile body cannot be protected, and at the same time, the work efficiency is low.
[0004] Therefore, there is an urgent need to provide a pile cutting device for reinforced concrete anchor jacked piles to solve the above problems. Summary of the Utility Model
[0005] In order to solve the problem that the existing pile cutting method is to directly chisel it manually in combination with a pneumatic pick, after the pile cutting is completed by this method, the concrete at the pile top is prone to looseness and fragmentation, the integrity of the pile body cannot be protected, and at the same time, the work efficiency is low, the utility model provides the following technical solution: A pile cutting device for reinforced concrete anchor jacked piles, including a foundation cap, on which a precast square pile is arranged.
[0006] Wherein, a core extraction component is detachably arranged on the foundation cap for core extraction of the precast square pile. The redundant part at the top of the precast square pile is cut by the way of drilling and core extraction, and the core extraction holes are overlapped, ensuring that more complete concrete is taken out, laying a foundation for the subsequent cleaning of the remaining concrete and maintaining the integrity of the top of the precast square pile, and further effectively solving the problem that the existing pile cutting method is to directly chisel it manually in combination with a pneumatic pick, after the pile cutting is completed by this method, the concrete at the pile top is prone to looseness and fragmentation, the integrity of the pile body cannot be protected, and at the same time, the work efficiency is low.
[0007] As a further improvement of this technical solution, the core extraction component includes a mounting seat fixedly installed on the foundation cap, a lifting rod fixedly connected to the mounting seat, a motor fixed on the lifting rod, and the output end of the motor is fixedly connected with a drill rod for drilling and core extraction of the precast square pile.
[0008] As a further improvement of this technical solution, several drilling positions are marked at the top of the precast square pile, core extraction holes are drilled at the top of the precast square pile at the drilling positions through the drill rod, and several longitudinal bars are symmetrically fixed in the precast square pile.
[0009] As a further improvement of the technical solution, a water adding mechanism is arranged inside the drill pipe for cooling the drill pipe during core drilling.
[0010] As a further improvement of the technical solution, several of the core holes are opened between several of the longitudinal bars to retain the longitudinal bars.
[0011] As a further improvement of the technical solution, several of the core holes are overlapped, and the opening height of the core holes matches the designed elevation from the precast square pile to the foundation cap.
[0012] As a further improvement of the technical solution, the fixing assembly includes first fixing plates symmetrically arranged on both sides of the precast square pile. The first fixing plates are detachably connected to the foundation cap. Chutes are symmetrically opened at both ends of the first fixing plates. Second fixing plates are slidably connected in the chutes. The first fixing plates and the second fixing plates are attached to the precast square pile. The two first fixing plates are fixedly connected by a first double-threaded screw rod. The two second fixing plates are fixedly connected by a second double-threaded screw rod.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] 1. For the reinforced concrete anchor-pressed pile cutting device, through the cooperation of the core-taking assembly and the foundation cap: the core-taking assembly is detachably installed on the foundation cap, which not only ensures the stability during the core-taking process, but also realizes the reuse of the assembly, reduces the construction cost, and improves the equipment utilization rate.
[0015] 2. For the reinforced concrete anchor-pressed pile cutting device, through the water adding mechanism arranged in the core-taking assembly: during the core drilling process of the drill pipe, the water adding mechanism effectively cools the drill pipe, avoiding the damage of the drilling tool and the local overheating of the concrete caused by high temperature during the drilling process, ensuring the drilling quality and construction safety.
[0016] 3. For the reinforced concrete anchor-pressed pile cutting device, by marking and overlapping the core holes at the top of the precast square pile: this setting enables the core-taking process to remove more concrete, while maintaining the integrity of the pile cutting at the top of the precast square pile, avoiding the loosening and fragmentation of a large area of concrete, and reducing the difficulty and risk of subsequent cleaning work.
[0017] 4. For the reinforced concrete anchor-pressed pile cutting device, by precisely drilling between the longitudinal bars and retaining the longitudinal bars: the retained longitudinal bars can be effectively connected with the steel bars in the cap or the upper structure, enhancing the continuity and integrity of the structure, improving the bearing capacity and seismic performance. At the same time, it also simplifies the process of arranging the steel bars in the cap, improving the construction efficiency and quality.
[0018] 5. The reinforced concrete anchor jacked pile cutting device is provided with a fixing component. The first fixing plate and the second fixing plate clamp and fix the precast square pile through a bidirectional threaded screw rod. This setting facilitates the clamping and fixing of different precast square piles. At the same time, the first fixing plate is fixed on the foundation cap, so that the precast square pile can be protected during core extraction, reducing its shaking and vibration. At the same time, when cleaning the remaining concrete, it can be cleaned along the fixing plate, making the cleaning more efficient, and the integrity of the remaining concrete at the top can be protected. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;
[0020] Figure 2 is a partial structural schematic diagram of the jacked pile after cutting in the present invention;
[0021] Figure 3 is a top view of the structure of the jacked pile after cutting in the present invention;
[0022] Figure 4 is a schematic diagram of the structure of the fixing component of the present invention;
[0023] Figure 5 is a schematic diagram of the first fixing plate of the present invention.
[0024] The meanings of the various reference numerals in the figure are as follows:
[0025] 1. Foundation cap; 2. Anchor jacked pile; 3. Core extraction component; 4. Fixing component;
[0026] 21. Precast square pile; 22. Core extraction hole; 23. Longitudinal reinforcement;
[0027] 31. Mounting seat; 32. Lifting rod; 33. Motor; 34. Drill rod;
[0028] 41. First fixing plate; 42. Second fixing plate; 43. First bidirectional threaded screw rod; 44. Second bidirectional threaded screw rod; 45. Slide groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0030] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" or "several" is two or more, unless otherwise specifically defined.
[0032] Please refer to Figures 1-5 As shown, the purpose of this embodiment is to provide a device for cutting off a reinforced concrete anchor static pressure pile, which includes a foundation cap 1, and a precast square pile 21 is arranged on the foundation cap 1.
[0033] Furthermore, a core extraction assembly 3 is detachably arranged on the foundation cap 1 for core extraction of the precast square pile 21; a fixing assembly 4 is detachably arranged on the foundation cap 1 to protect the precast square pile 21 during core extraction and pile cutting.
[0034] Fix the entire core extraction assembly 3 on the foundation cap 1 through the mounting seat 31, then select a drill rod 34 with an appropriate length and install it at the output end of the motor 33. A water adding mechanism is connected inside the drill rod 34 for cooling the drill rod 34; then, according to the size of the precast square pile 21, use a marking line to mark the position for drilling and core extraction at the top. After marking, drill and extract the core from the top of the precast square pile 21 through the drill rod 34. The drilling positions need to be overlapped, but it is necessary to ensure that the positions are between several longitudinal bars 23 and not touch the longitudinal bars 23 during drilling, so as to facilitate the cleaning of the remaining concrete after core extraction;
[0035] The entire core extraction assembly 3 is detachably installed on the foundation cap 1, which not only ensures the stability during core extraction but also enables repeated use.
[0036] Furthermore, the core extraction assembly 3 includes a mounting seat 31 fixedly installed on the foundation cap 1. A lifting rod 32 is fixedly connected to the mounting seat 31, and a motor 33 is fixedly provided on the lifting rod 32. The output end of the motor 33 is fixedly connected to a drill rod 34 for drilling and core extraction of the precast square pile 21.
[0037] Specifically, a number of drilling positions are marked at the top of the precast square pile 21. A core extraction hole 22 is drilled at the top of the precast square pile 21 at the drilling position through a drill pipe 34. A number of longitudinal bars 23 are symmetrically fixed inside the precast square pile 21;
[0038] After the drill pipe 34 finishes drilling, core extraction can be carried out, leaving a number of core extraction holes 22, longitudinal bars 23 and the remaining part of the concrete. At this time, the remaining concrete above the elevation of the precast square pile 21 is cleaned up through some simple steps such as but not limited to pneumatic pick chiseling, cutting, etc., and a number of longitudinal bars 23 are reserved.
[0039] Furthermore, a water adding mechanism is arranged inside the drill pipe 34 for cooling the drill pipe 34 during core drilling. It should be noted that the lifting of the lifting rod 32 and the water drill for cooling the drill pipe 34 are both existing mature technologies and will not be elaborated here.
[0040] In addition, a number of core extraction holes 22 are opened between a number of longitudinal bars 23 to retain the longitudinal bars 23; It should be added that the reason for retaining the longitudinal bars 23 is, firstly, to enhance the structural continuity. The retained longitudinal bars 23 can be effectively connected with the steel bars in the bearing platform or the upper structure to form a continuous steel bar mesh, enhancing the stiffness and integrity of the entire structure; Secondly, to improve the bearing capacity. The longitudinal bars 23 are tied or welded together with the steel bars of the upper structure to jointly bear the load, improving the bearing capacity and seismic performance of the structure; In addition, it can improve the construction quality. The reserved longitudinal bars 23 can better ensure the accurate position of the steel bars when pouring the concrete of the bearing platform, avoiding quality problems caused by the deviation of the steel bars; At the same time, retaining the longitudinal bars 23 avoids the complex work of re-arranging the steel bars on the bearing platform, reduces the workload of on-site processing and tying, and improves the construction efficiency.
[0041] In addition, a number of core extraction holes 22 are overlapped and opened, and the opening height of the core extraction holes 22 matches the designed elevation from the precast square pile 21 to the foundation bearing platform 1. It should be noted that a number of core extraction holes 22 are overlapped and opened, so that more complete concrete can be taken away from the top of the precast square pile 21, facilitating the subsequent cleaning of the remaining concrete, and at the same time ensuring the integrity of the pile cutting at the top of the precast square pile 21 as much as possible.
[0042] In addition, the fixing component 4 includes first fixing plates 41 symmetrically arranged on both sides of the precast square pile 21. The first fixing plates 41 are detachably connected to the foundation cap 1. Chute grooves 45 are symmetrically formed at both ends of the first fixing plates 41. Second fixing plates 42 are slidably connected in the chute grooves 45. The first fixing plates 41 and the second fixing plates 42 are attached to the precast square pile 21. The two first fixing plates 41 are fixedly connected by a first double-threaded screw rod 43, and the two second fixing plates 42 are fixedly connected by a second double-threaded screw rod 44. By fixing the first fixing plates 41 on the foundation cap 1, then clamping the precast square pile 21 by the first double-threaded screw rod 43, then adjusting the second fixing plates 42 to slide in the chute grooves 45 to make them fit the precast square pile 21, and then clamping the precast square pile 21 by the second double-threaded screw rod 44, the vibration of the precast square pile 21 can be minimized during the coring process to protect it. At the same time, during subsequent operations, the integrity of the concrete at the top of the precast square pile 21 can be further protected.
[0043] The specific working principle is as follows:
[0044] During specific operation, first, the entire coring component 3 is fixed on the foundation cap 1 through the mounting seat 31. Then, a drill rod 34 with a suitable length is installed at the output end of the motor 33. A water-adding mechanism is connected inside the drill rod 34 for cooling the drill rod 34. After that, according to the size of the precast square pile 21, the position for drilling and coring is marked at the top with a string line. After marking, the top of the precast square pile 21 is drilled and cored through the drill rod 34. The drilling positions need to be overlapped, but it is necessary to ensure that the positions are between several longitudinal bars 23 and not touch the longitudinal bars 23 during drilling, so as to facilitate the cleaning of the remaining concrete after coring.
[0045] After the drill rod 34 finishes drilling, coring can be carried out, leaving several coring holes 22, longitudinal bars 23, and the remaining part of the concrete. At this time, the remaining concrete above the elevation of the precast square pile 21 is cleaned by some simple steps such as but not limited to pneumatic pick chiseling, cutting, etc., and several longitudinal bars 23 are retained.
[0046] By cutting the pile in this way, first, the influence on the stability and vibration of the overall structure is small because the vibration during the drilling and coring process is much smaller than that of chiseling. Second, for the precast square pile 21 after coring, when cleaning the remaining part of the concrete, the influence on the integrity of the concrete at its top is smaller as a whole, and large-area loosening and fragmentation will not occur. Finally, this method also retains the integrity of the longitudinal bars 23, ensuring the subsequent bearing stability and stiffness. Thus, it effectively solves the problem that the existing pile cutting method uses manual labor combined with a pneumatic pick to directly chisel, resulting in the concrete at the top of the pile being prone to loosening and fragmentation after pile cutting, the integrity of the pile body not being protected, and the work efficiency being low at the same time.
[0047] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present utility model, and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A reinforced concrete anchor static pile cutting device, comprising a foundation cap, wherein a prefabricated square pile is arranged on the foundation cap; characterized in that: The foundation cap is detachably provided with a coring assembly for coring the prefabricated square piles; the foundation cap is detachably provided with a fixing assembly for protecting the prefabricated square piles during coring and pile cutting.
2. The reinforced concrete anchor static pile cutting device according to claim 1 is characterized by: The coring assembly comprises a mounting seat fixedly mounted on the foundation support, a lifting rod is fixedly connected to the mounting seat, a motor is fixedly arranged on the lifting rod, and a drill rod is fixedly connected to the output end of the motor for drilling and coring the prefabricated square piles.
3. The reinforced concrete anchor static pile cutting device according to claim 2 is characterized by: A plurality of drilling positions are marked on the top of the prefabricated square pile, a core hole is opened through the drill rod at the top of the prefabricated square pile at the drilling position, and a plurality of longitudinal reinforcements are symmetrically fixed in the prefabricated square pile.
4. The reinforced concrete anchor static pile cutting device according to claim 3 is characterized by: A water adding mechanism is arranged inside the drill rod, which is used to cool the drill rod when drilling and coring.
5. The reinforced concrete anchor static pile cutting device according to claim 4 is characterized by: A plurality of the core holes are opened between the plurality of the longitudinal bars to retain the longitudinal bars.
6. The reinforced concrete anchor static pile cutting device according to claim 5 is characterized by: A plurality of the core holes are opened in an overlapping manner, and the opening height of the core holes matches the design elevation from the prefabricated square piles to the foundation cap.
7. The reinforced concrete anchor static pile cutting device according to claim 3 is characterized by: The fixing assembly includes a first fixing plate symmetrically arranged on both sides of the prefabricated square pile, the first fixing plate is detachably connected to the foundation platform, sliding grooves are symmetrically opened at both ends of the first fixing plate, and a second fixing plate is slidably connected in the sliding grooves. The first fixing plate and the second fixing plate are fitted with the prefabricated square pile, and the two first fixing plates are fixedly connected by a first bidirectional threaded screw, and the two second fixing plates are fixedly connected by a second bidirectional threaded screw.