Quantitative grout supplementing device for pile bottom and pile side of cast-in-situ bored pile
By designing a quantitative slurry replenishing device for drilled piles, the problem of uneven grouting effect caused by the influence of geological conditions in traditional grouting pipes is solved, and more uniform and efficient grouting is achieved, which improves the bearing capacity and engineering quality of the pile foundation.
Patent Information
- Application Number
- CN202422151034.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The grouting pipes of traditional drilling cast piles are tied to the outside of the steel cage. Due to geological conditions, the cement slurry is prone to overflow, resulting in uneven grouting effect, affecting the bearing capacity and project quality.
A quantitative slurry replenishment device for drilling and filling pile bottom and pile side is designed, including a slurry storage box, agitation system, a four-cylinder high-pressure grouting pump and lifting components. Agitation, grouting and pipeline lifting are achieved through controllers and motors to ensure quantitative slurry replenishment.
Through uniform stirring and precise grouting, the uniformity and efficiency of grouting are improved, the overflow of cement slurry is reduced, the bearing capacity of pile foundation is enhanced, and the project quality is improved.
Smart Images
Figure CN223017632U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction engineering, in particular to a device for quantitatively replenishing slurry at the bottom and side of a bored cast-in-place pile. Background Technique
[0002] With the development of China's economy, there are more and more high-rise buildings in cities. The depth of foundation embedding and the form of pile foundation are also changing. More and more post-grouting bored cast-in-place piles are applied to engineering projects. The post-grouting bored cast-in-place pile itself has high bearing capacity. At the same time, because the cement slurry reinforces the soil around the pile foundation, improves the soil, and increases the friction between the pile and the soil, the bearing capacity of the pile foundation is improved. However, the traditional slurry injection pipes at the bottom and side of the pile are tied to the outside of the steel reinforcement cage and installed together with the steel reinforcement cage. Affected by various factors, especially the geological conditions of the soil layer where the slurry injection pipe is located; the soil layer where the slurry injection pipe is located is a soil layer with larger soil particles, represented by the silty sand layer and the sand layer belt. The cement slurry will overflow to the surrounding areas without obvious rules, which is mainly related to the water channels formed in the soil layer and the saturation degree between the particles. After excavation, it is found that the grouting effect in the upper and lower areas of this position is distributed in blocks. Some of the soil on the side of the pile has slurry, and some are the original soil; the soil layer where the slurry injection pipe is located is a clay layer or a silty clay layer with a relatively high degree of adhesion. The cement slurry will overflow along several water channels. After excavation, it is found that it is radially distributed in all directions after grouting, affecting the grouting effect.
[0003] The above situations will greatly affect the grouting effect, resulting in the bearing capacity not meeting the design requirements and affecting the project quality. It is very difficult for the traditional process to solve the above problems, and the pile replacement period is long and the cost is high. Therefore, a device for quantitatively replenishing slurry at the bottom and side of a bored cast-in-place pile is provided to solve the problems raised in the above background technique. Content of the Utility Model
[0004] In order to make up for the above deficiencies, the utility model provides a device for quantitatively replenishing slurry at the bottom and side of a bored cast-in-place pile, aiming to improve the problems that the bearing capacity in the prior art does not meet the design requirements and affects the project quality. It is very difficult for the traditional process to solve the above problems, and the pile replacement period is long and the cost is high.
[0005] To achieve the above object, the present utility model provides the following technical solutions: A quantitative slurry replenishing device for the bottom and side of a bored cast-in-place pile, including a base, an upper part of the base is fixedly connected with a slurry storage tank, an upper part of the slurry storage tank is fixedly connected with a first motor, an output end of the first motor is fixedly connected with a stirring shaft, an outer part of the stirring shaft is fixedly connected with stirring blades, an upper right side of the slurry storage tank is fixedly communicated with a water pump, a right part of the water pump is fixedly communicated with a water inlet pipe, an upper part of the water pump is fixedly communicated with a connecting pipe, a lower part of the connecting pipe is fixedly communicated with a ring water pipe, the ring water pipe is fixedly installed on an inner top of the slurry storage tank, a left part of the slurry storage tank is fixedly communicated with a four-cylinder high-pressure grouting pump, a left part of the four-cylinder high-pressure grouting pump is fixedly communicated with a conveying pipe, a left part of the conveying pipe is fixedly communicated with a main grouting pipe, a lower part of the main grouting pipe is fixedly communicated with a branch grouting pipe, a lifting assembly is arranged on a right part of the four-cylinder high-pressure grouting pump, and the lifting assembly is used for lifting the main grouting pipe and the branch grouting pipe.
[0006] Further, the lifting assembly includes a fixed frame, two brackets are fixedly connected to an upper part of the fixed frame, a second motor is fixedly installed on a left part of the bracket on the left side, a roller is arranged inside the bracket, an output end of the second motor is fixedly connected with a left part of the roller, a traction rope is arranged outside the roller, and a lower part of the traction rope is fixedly connected to an upper part of the main grouting pipe.
[0007] Further, a geological drill is arranged on a left side of the base, and a pile foundation is arranged inside a lower part of the geological drill and the base.
[0008] Further, a controller is fixedly installed on a front part of the slurry storage tank, and the controller is electrically connected to the first motor, the second motor and the four-cylinder high-pressure grouting pump.
[0009] Further, the main grouting pipe and the branch grouting pipe are slidably connected to an outer side of the pile foundation.
[0010] Further, the stirring blades are rotatably connected inside the slurry storage tank, and the roller is rotatably connected to an upper part of the fixed frame.
[0011] Further, a valve is fixedly installed on an outer part of the water inlet pipe, and a sewage pipe is fixedly communicated with a lower right side of the slurry storage tank.
[0012] Further, a feeding port is fixedly communicated with an upper left side of the slurry storage tank, and universal wheels are rotatably connected to four corners of a bottom of the base.
[0013] The present utility model has the following beneficial effects:
[0014] In the present utility model, the motor one is started by the controller. The output end of the motor one drives the stirring shaft to rotate, and the stirring shaft drives the stirring blades to rotate to keep the mud uniform. The user can open the valve, send water into the connecting pipe through the water pump and the water inlet pipe, enter the inner part of the annular water pipe from the connecting pipe, and spray it into the slurry storage tank, so as to clean the stirring blades and the slurry storage barrel. The cleaned water can be discharged through the sewage pipe. During the first-stage grouting, the four-cylinder high-pressure grouting pump is started until the slurry returns at the pile top or the flow rate significantly decreases.
[0015] In the present utility model, the motor two is started by the controller. The output end of the motor two drives the roller inside the bracket to rotate, and the roller drives the traction rope to move downward. The traction rope lowers the pipe to the bottom of the hole. After the first supplementary grouting, the motor two is started, and the grouting pipe is lifted through the traction rope and the position of the grouting pipe is adjusted. The first-stage grouting pipe is replaced with a grouting branch pipe, and the grouting main pipe reaches the second section, with the other positions remaining unchanged; the grouting pipe is lowered and grouted, and grouting is carried out again according to the foregoing arrangement; the above steps are repeated until the pile top position; the entire grouting main pipe is replaced and supplementary grouting is carried out. After the grouting pipe is lowered to the target position, supplementary grouting and sealing maintenance are carried out again. After the grouting is completed, the grouting pipe is blocked with a grouting cap for maintenance. Brief Description of the Drawings
[0016] Figure 1 is the front view of the device for quantitatively supplementary grouting at the bottom and side of a bored cast-in-place pile proposed by the present utility model;
[0017] Figure 2 is the schematic diagram of the internal structure of the slurry storage tank of the device for quantitatively supplementary grouting at the bottom and side of a bored cast-in-place pile proposed by the present utility model;
[0018] Figure 3 is the schematic diagram of the structure of the lifting assembly of the device for quantitatively supplementary grouting at the bottom and side of a bored cast-in-place pile proposed by the present utility model;
[0019] Figure 4 is the schematic diagram of the structure of the grouting branch pipe and the grouting main pipe of the device for quantitatively supplementary grouting at the bottom and side of a bored cast-in-place pile proposed by the present utility model.
[0020] Legend Explanation:
[0021] 1. Pile foundation; 2. Geological drill; 3. Four-cylinder high-pressure grouting pump; 4. Grouting branch pipe; 5. Slurry storage tank; 6. Feed inlet; 7. Motor one; 8. Stirring shaft; 9. Stirring blade; 10. Water pump; 11. Water inlet pipe; 12. Connecting pipe; 13. Annular water pipe; 14. Base; 15. Universal wheel; 16. Bracket; 17. Motor two; 18. Roller; 19. Traction rope; 20. Fixed frame; 21. Valve; 22. Controller; 23. Sewage pipe; 24. Grouting main pipe; 25. Delivery pipe. Detailed Implementation Modes
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] Referring to Figure 1 and Figure 2 , an embodiment provided by the present utility model: a quantitative slurry replenishing device for the bottom and side of a bored cast-in-place pile, including a base 14, the upper part of the base 14 is fixedly connected with a slurry storage tank 5, the upper part of the slurry storage tank 5 is fixedly connected with a first motor 7, the output end of the first motor 7 is fixedly connected with a stirring shaft 8, the outside of the stirring shaft 8 is fixedly connected with stirring blades 9, the upper right side of the slurry storage tank 5 is fixedly communicated with a water pump 10, the right part of the water pump 10 is fixedly communicated with a water inlet pipe 11, the upper part of the water pump 10 is fixedly communicated with a connecting pipe 12, the lower part of the connecting pipe 12 is fixedly communicated with a ring water pipe 13, the ring water pipe 13 is fixedly installed on the inner top of the slurry storage tank 5, the left part of the slurry storage tank 5 is fixedly communicated with a four-cylinder high-pressure grouting pump 3, the left part of the four-cylinder high-pressure grouting pump 3 is fixedly communicated with a conveying pipe 25, the left part of the conveying pipe 25 is fixedly communicated with a main grouting pipe 24, the lower part of the main grouting pipe 24 is fixedly communicated with a branch grouting pipe 4, and a lifting assembly is arranged on the right side of the four-cylinder high-pressure grouting pump 3, and the lifting assembly is used for lifting the main grouting pipe 24 and the branch grouting pipe 4.
[0024] Start the first motor 7 through the controller 22, the output end of the first motor 7 drives the stirring shaft 8 to rotate, the stirring shaft 8 drives the stirring blades 9 to rotate, so as to keep the slurry uniform. The user can open the valve 21, send water into the connecting pipe 12 through the water pump 10 and the water inlet pipe 11, enter the ring water pipe 13 from the connecting pipe 12, and spray it into the slurry storage tank 5, so as to clean the stirring blades 9 and the slurry storage barrel 5. The cleaned water can be discharged through the sewage pipe 23. When grouting for the first section, start the four-cylinder high-pressure grouting pump 3. When starting to grout, the pressure is controlled at 2.2 MPa. After the flow rate is stable or after grouting for 2 minutes, the pressure is increased to 2.5 MPa. After grouting for 5 minutes, the pressure is increased to 2.8 MPa until slurry returns at the pile top or the flow rate significantly decreases.
[0025] Referring to Figure 1 and Figure 3 , the lifting assembly includes a fixed frame 20, two brackets 16 are fixedly connected to the upper part of the fixed frame 20, a second motor 17 is fixedly installed on the left part of the bracket 16 on the left side, a roller 18 is arranged inside the bracket 16, the output end of the second motor 17 is fixedly connected to the left part of the roller 18, a traction rope 19 is arranged outside the roller 18, and the lower part of the traction rope 19 is fixedly connected to the upper part of the main grouting pipe 24;
[0026] The second motor 17 is started by the controller 22. The output end of the second motor 17 drives the roller 18 inside the bracket 16 to rotate. The roller 18 drives the traction rope 19 to move downward. The traction rope 19 lowers the pipe to the bottom of the hole. After the first grout replenishment, the second motor 17 is started, and the grouting pipe is lifted through the traction rope 19 and the position of the grouting pipe is adjusted. The first section of the grouting pipe is replaced with the grouting branch pipe 4, and the grouting main pipe 24 reaches the second section, with the other positions remaining unchanged; the grouting pipe is lowered and grouted, and grouting is carried out again according to the aforementioned arrangement; the above steps are repeated until the pile top position; the entire grouting main pipe 24 is replaced and grout is replenished. After the grouting pipe is lowered to the target position, grout replenishment and sealing maintenance are carried out again. After the grouting is completed, the grouting pipe is blocked with a grouting cap for maintenance.
[0027] Refer to Figure 1 、 Figure 2 and Figure 4 As shown in
[0028] Through the debugging of the geological drill 2, the drill crawls to the designated position on the site for trial drilling and adjusts the equipment parameters; drill to the target elevation, stop drilling at 10 cm below the pile bottom elevation. Since the controller 22 is electrically connected to the first motor 7, the second motor 17, and the four-cylinder high-pressure grouting pump 3, starting and shutting down can be controlled. Through the sliding of the grouting main pipe 24 and the grouting branch pipe 4 on the outside of the pile foundation 1, grouting can be carried out. Through the rotation of the stirring blade 9 inside the slurry storage tank 5, the uniformity of the slurry can be maintained. Through the rotation of the roller 18 on the upper part of the fixing frame 20, the grouting main pipe 24 and the grouting branch pipe can be lifted and lowered. By setting the valve 21, it is convenient to inject water. By setting the sewage pipe 23, the cleaned water can be discharged. By setting the feed inlet 6, materials can be injected. By setting the universal wheels 15, it is convenient to move the device.
[0029] Working principle: When using this device, first ensure that the site is leveled and the construction area is cleaned to ensure the normal operation of the equipment, material processing and transportation; position setting out, position setting out is carried out according to the position where grouting is to be carried out, and the distance from the center point to the outer wall of the first pile foundation shall not be less than 10 cm to avoid affecting the original first pile foundation; debugging of the geological drill 2, the drill crawls to the designated position on the site for trial drilling and adjusts the equipment parameters; drill to the target elevation and stop drilling at 10 cm below the pile bottom elevation; install and lower the grouting pipe. During the installation of the first grouting pipe, only the first section installs the main grouting pipe 24, and the rest of the positions install the grouting branch pipes 4. Feed materials through the feed port 6, start the second motor 17 through the controller 22, the second motor 17 drives the roller 18 inside the bracket 16 to rotate, the roller 18 drives the traction rope 19 to move down, and the traction rope 19 lowers the pipe to the bottom of the hole. Start the first motor 7 through the controller 22, the first motor 7 drives the stirring shaft 8 to rotate, and the stirring shaft 8 drives the stirring blades 9 to rotate to keep the slurry uniform. The user can open the valve 21, send water into the connecting pipe 12 through the water pump 10 and the water inlet pipe 11, enter the inside of the annular water pipe 13 from the connecting pipe 12 and spray it into the slurry storage tank 5, which can clean the stirring blades 9 and the slurry storage barrel 5, and the cleaned water can be discharged through the sewage pipe 23. During the first-stage grouting, start the four-cylinder high-pressure grouting pump 3, control the pressure at 2.2 MPa when starting to grout, keep the flow rate stable or after grouting for 2 minutes, increase the pressure to 2.5 MPa, and after grouting for 5 minutes, increase the pressure to 2.8 MPa until slurry returns at the pile top or the flow rate significantly decreases; then start the second motor 17, lift the grouting pipe through the traction rope 19 and adjust the position of the grouting pipe, replace the first-stage grouting pipe with the grouting branch pipe 4, and the main grouting pipe 24 reaches the second section, and the rest of the positions remain unchanged; lower the grouting pipe and grout, grout again according to the aforementioned arrangement; repeat the above steps until the pile top position; replace the full main grouting pipe 24 and lower it for supplementary grouting. After the grouting pipe is lowered to the target position, carry out supplementary grouting and sealing maintenance again. After the grouting is completed, block the grouting pipe with a grouting cap and carry out maintenance.
[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A device for quantitatively filling the bottom and side of a bored pile, comprising a base (14), characterized in that: The upper part of the base (14) is fixedly connected to a slurry storage box (5), the upper part of the slurry storage box (5) is fixedly connected to a motor 1 (7), the output end of the motor 1 (7) is fixedly connected to a stirring shaft (8), the outside of the stirring shaft (8) is fixedly connected to a stirring blade (9), the upper right side of the slurry storage box (5) is fixedly connected to a water pump (10), the right side of the water pump (10) is fixedly connected to a water inlet pipe (11), the upper part of the water pump (10) is fixedly connected to a connecting pipe (12), and the lower part of the connecting pipe (12) is fixedly connected to a ring water pipe (11). 3), the annular water pipe (13) is fixedly mounted on the inner top of the slurry storage box (5), the left part of the slurry storage box (5) is fixedly connected to a four-cylinder high-pressure grouting pump (3), the left part of the four-cylinder high-pressure grouting pump (3) is fixedly connected to a delivery pipe (25), the left part of the delivery pipe (25) is fixedly connected to a grouting main pipe (24), the lower part of the grouting main pipe (24) is fixedly connected to a grouting branch pipe (4), and the right part of the four-cylinder high-pressure grouting pump (3) is provided with a lifting assembly, and the lifting assembly is used to lift the grouting main pipe (24) and the grouting branch pipe (4).
2. The device for quantitative grouting at the bottom and side of bored piles according to claim 1, characterized in that: The lifting assembly comprises a fixed frame (20), the upper part of which is fixedly connected to two brackets (16), a second motor (17) is fixedly mounted on the left part of the bracket (16) on the left side, a roller (18) is arranged on the inner side of the bracket (16), an output end of the second motor (17) is fixedly connected to the left part of the roller (18), a traction rope (19) is arranged on the outside of the roller (18), and the lower part of the traction rope (19) is fixedly connected to the upper part of the grouting main pipe (24).
3. The device for quantitative grouting at the bottom and side of bored piles according to claim 1, characterized in that: A geological drilling rig (2) is arranged on the left side of the base (14), and a pile foundation (1) is arranged on the inner lower part of the geological drilling rig (2) and the base (14).
4. The device for quantitative grouting at the bottom and side of bored piles according to claim 1, characterized in that: A controller (22) is fixedly mounted on the front of the slurry storage box (5), and the controller (22) is electrically connected to the first motor (7), the second motor (17) and the four-cylinder high-pressure grouting pump (3).
5. The device for quantitative grouting at the bottom and side of bored piles according to claim 2, characterized in that: The grouting main pipe (24) and the grouting branch pipe (4) are slidably connected to the outside of the pile foundation (1).
6. The device for quantitative grouting at the bottom and side of bored piles according to claim 2, characterized in that: The stirring blade (9) is rotatably connected to the interior of the slurry storage box (5), and the roller (18) is rotatably connected to the upper part of the fixing frame (20).
7. The device for quantitative grouting at the bottom and side of bored piles according to claim 1, characterized in that: A valve (21) is fixedly installed on the outside of the water inlet pipe (11), and a sewage discharge pipe (23) is fixedly connected to the lower right side of the slurry storage box (5).
8. The device for quantitative grouting at the bottom and side of bored piles according to claim 1, characterized in that: The upper left side of the slurry storage box (5) is fixedly connected to a feed port (6), and the four corners of the bottom of the base (14) are rotatably connected to universal wheels (15).