Intelligent foundation treatment equipment and method integrating grouting method and compaction pile method
By combining grouting method and tight pile extrusion method, vibrating immersive tubes and grouting technology, the problem of uneven filling in foundation treatment is solved, and the foundation bearing capacity and stability is improved. It is suitable for a variety of foundation types and reduces construction costs.
Patent Information
- Application Number
- CN202510217105.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-04-11
AI Technical Summary
In the existing foundation treatment technology, the tight pile method has poor grades and leads to uneven filling, which affects the long-term stability of the foundation.
Combined with the grouting method and the tight pile extrusion method, the outer pile pipe is sunk into the foundation soil by vibrating the immersed pipe, and sand and gravel are backfilled with the tip of the flap pile and the filler mouth to form a dense gravel pile body. The inner pile pipe is grouted to fill the soil pores to enhance the foundation strength and stability.
It effectively solves the problem of uneven reinforcement effect, improves the foundation load-bearing capacity and stability, is suitable for a variety of foundation types, and reduces construction costs and equipment types.
Smart Images
Figure CN119800986A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of foundation treatment in geotechnical engineering, and more particularly to an intelligent foundation treatment device and method integrating a grouting method and a compaction pile method. Background Art
[0002] The stability of the foundation is an important prerequisite for ensuring the long-term safety and stability of buildings. Common principles for treating soft soil foundations include compaction, replacement, solidification, and drainage. The vibrating pipe compaction gravel pile method, referred to as the compaction pile method, is a foundation treatment technology that uses a vibrating pile driver to sink the pile pipe into the soil, and then puts loose materials such as gravel into the pile pipe. Through operations such as vibration and pipe pulling, the gravel forms a dense gravel pile body in the pile hole, and works together with the soil between the piles to form a composite foundation, thereby improving the foundation bearing capacity and reducing the amount of settlement. Grouting is a foundation treatment technology that uses the solidification principle for reinforcement. The slurry is pressurized and injected into the pores of the foundation soil to fill the pores between the particles and form a solid, thereby improving the foundation bearing capacity.
[0003] The compaction pile method is affected by the input of crushed stone materials, and there is a risk of uneven filling due to poor grading, which affects the long-term stability of the foundation. Combining the grouting method with the compaction pile method can effectively complement each other to form a more solid cement crushed stone pile body, effectively improve the bearing capacity of the foundation, and reduce the foundation settlement. Summary of the invention
[0004] In view of this, the present invention provides an intelligent foundation treatment device and method integrating grouting method and compaction pile method, aiming to solve the above technical problems.
[0005] In order to achieve the above object, the present invention adopts the following technical solution:
[0006] An intelligent foundation treatment device integrating grouting method and compaction pile method, comprising:
[0007] An outer pile pipe, wherein the top of the outer pile pipe is provided with a filling port, and the bottom of the outer pile pipe is provided with a plurality of flap pile tips, wherein the plurality of flap pile tips form a pointed structure;
[0008] An inner pile pipe, which is arranged inside the outer pile pipe and has grouting holes on its wall;
[0009] A vibrating hammer is arranged at the top end of the outer pile pipe.
[0010] Through the above technical scheme, the present invention combines the compaction pile method and the grouting method to give full play to the advantages of the two methods. The vibration sinking pipe compaction gravel pile method sinks the pile pipe into the foundation soil by vibration, compacts the surrounding soil, makes the soil dense, and improves the bearing capacity of the foundation; the grouting method fills the pores of the soil with slurry to further enhance the strength and stability of the soil. The outer pile pipe is quickly sunk into the foundation soil by using a vibrating hammer, and the construction speed is fast, which is suitable for a variety of foundation types. The equipment has a compact structure and integrated functions, which reduces the types of construction equipment and construction procedures, and reduces construction costs.
[0011] Preferably, in the above-mentioned intelligent foundation treatment equipment integrating the grouting method and the compaction pile method, an ultrasonic depth sensor is provided on the top of the outer pile pipe. The ultrasonic depth sensor can monitor the depth of the outer pile pipe sunk into the foundation in real time, ensure the construction accuracy, and avoid foundation treatment problems caused by insufficient or excessive depth. The sensor data can be fed back to the control center to realize automatic control and improve construction efficiency and quality. The error and labor intensity of manual depth measurement are reduced, and the safety and reliability of construction are improved.
[0012] Preferably, in the above-mentioned intelligent foundation treatment equipment integrating the grouting method and the compaction pile method, a shock absorber is installed in the middle of the outer pile pipe. The shock absorber can effectively absorb and reduce the vibration generated during the construction process, reduce the disturbance to the surrounding buildings and foundations, and avoid uneven settlement. Ensure that the outer pile pipe maintains verticality and pile position accuracy during the sinking and extraction process, and improve the construction quality. Reduce the impact of vibration on the equipment itself, reduce the equipment failure rate, and extend the service life.
[0013] Preferably, in the above-mentioned intelligent foundation treatment equipment integrating the grouting method and the compaction pile method, a pressure sensor is installed at the lower part of the inner pile pipe. The pressure sensor can monitor the pressure changes during the grouting process in real time to ensure that the grouting pressure is within a reasonable range, and avoid uneven grouting or equipment damage due to excessively high or low pressure. According to the pressure feedback, the grouting parameters can be adjusted in time to ensure that the slurry is evenly injected into the soil pores and improve the foundation reinforcement effect. Prevent safety accidents caused by abnormal grouting pressure and improve construction safety.
[0014] Preferably, in the above-mentioned intelligent foundation treatment equipment integrating the grouting method and the compaction pile method, the flap pile tip is controlled to open and close by a hydraulic cylinder installed on the inner wall of the outer pile tube. The hydraulic cylinder controls the opening and closing of the flap pile tip, which is flexible to operate and can be adjusted at any time according to construction needs to avoid adverse effects on the compacted foundation soil. The flap pile tip can be opened and closed quickly to reduce construction time and improve construction efficiency. Secondary disturbance of the foundation soil when the outer pile tube is pulled out is avoided to ensure the density and stability of the foundation soil.
[0015] Preferably, in the above-mentioned intelligent foundation treatment equipment integrating the grouting method and the compaction pile method, the top of the outer pile pipe and the inner pile pipe has a locking and limiting mechanism, and the locking and limiting mechanism limits the axial displacement of the outer pile pipe and the inner pile pipe. The locking and limiting mechanism can limit the axial displacement of the outer pile pipe and the inner pile pipe, ensure the stability of the pile pipe during the construction process, and avoid construction errors caused by displacement. Prevent the pile pipe from accidentally moving due to external force during the construction process, and improve construction safety. The design of the locking and limiting mechanism makes the installation and disassembly of the pile pipe more convenient, and improves the convenience of construction.
[0016] Preferably, in the above-mentioned intelligent foundation treatment equipment integrating the grouting method and the compaction pile method, the grouting hole is a circular nozzle. The circular nozzle design makes the slurry spray more uniformly, with small flow resistance, and can better fill the soil pores. The nozzle has no convexity or concaveness, which is conducive to the up and down movement of the grouting pipe and can also prevent the slurry from being blocked or flowing poorly at the nozzle. The nozzle diameter is determined according to the grouting amount, grouting pressure and formation characteristics, and the grouting effect is further optimized.
[0017] Preferably, in the above-mentioned intelligent foundation treatment equipment integrating the grouting method and the compaction pile method, the outer pile pipe is a steel pipe. The steel pipe has high strength and good compressive resistance, can withstand large construction loads, and ensure the stability of the outer pile pipe during the sinking and pulling out process. The steel pipe is wear-resistant and corrosion-resistant, has a long service life, and reduces the replacement frequency and maintenance cost of the equipment. The high strength and stability of the steel pipe provide reliable guarantee for construction and improve the safety and reliability of construction.
[0018] Preferably, in the above-mentioned intelligent foundation treatment equipment integrating the grouting method and the compaction pile method, the inner wall of the inner pile pipe has a corrosion-resistant layer. The corrosion-resistant layer can effectively prevent the grouting liquid from corroding the inner wall of the inner pile pipe, thereby extending the service life of the inner pile pipe. The corrosion-resistant layer ensures the quality and performance of the grouting liquid during transportation, and avoids slurry contamination or deterioration caused by corrosion. The frequency of equipment maintenance and replacement caused by corrosion is reduced, thereby reducing construction costs.
[0019] The present invention also provides a method of intelligent foundation treatment equipment that integrates the grouting method and the compaction pile method. First, the outer pile pipe is sunk into the foundation soil through the cooperation of the vibrating hammer and the outer pile pipe; then the valve pile tip is opened, and the outer pile pipe is gradually raised, and during the raising process, sand and gravel are backfilled through the filling port; after the outer pile pipe is completely pulled out and the backfilling is completed, grouting is performed through the inner pile pipe.
[0020] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses an intelligent foundation treatment device and method integrating the grouting method and the compaction pile method, which has the following beneficial effects:
[0021] 1. Use compaction piles to compact the soil initially, change the pore structure of the soil, and make the pores of the soil more uniform. Then, grouting is performed, and the slurry can flow and settle more evenly in the pores of the compacted soil, thus effectively solving the problem of uneven reinforcement effect.
[0022] 2. By rationally designing the depth and spacing of compaction piles, as well as parameters such as grouting pressure, flow rate and grouting time, the reinforcement depth and range can be effectively controlled.
[0023] 3. After the compaction pile is constructed, the pile body and the soil between the piles are reinforced by grouting. The injected slurry can penetrate into the pores between the particles to form a more uniform filling, improve the quality of the pile body, and also enhance the strength of the soil between the piles. In this way, the pile and the soil between the piles form a whole through the slurry filling effect, work better together, and jointly bear the upper load.
[0024] 4. Improve the bearing capacity of the foundation: The compaction pile itself can bear part of the upper load and compact the soil at the same time. The injected slurry penetrates into the pores of the soil and fills the pores that may have been empty, further improving the strength of the soil, and tightly connects the piles and the soil between the piles, so that the foundation can bear a greater load.
[0025] 5. Enhance foundation stability: The compaction pile changes the stress state of the soil and increases the shear strength of the soil. At the same time, the injected slurry fills the pores of the soil and improves the soil's ability to resist liquefaction and seepage.
[0026] 6. Wide range of applications: This device is suitable for a variety of foundation types and has a good reinforcement effect on foundations of different soil types such as sand, silt, and silty clay. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0028] Figure 1 The accompanying drawing is a schematic structural diagram of an intelligent foundation treatment device integrating a grouting method and a compaction pile method provided by the present invention;
[0029] Figure 2 The accompanying drawing is a schematic diagram of the structure of the outer pile pipe provided by the present invention;
[0030] Figure 3 The accompanying drawing is a schematic structural diagram of the inner pile pipe provided by the present invention.
[0031] in:
[0032] 1-outer pile pipe; 2-inner pile pipe; 3-vibration hammer; 4-filling port; 5-valve pile tip; 6-grouting hole; 7-ultrasonic depth sensor; 8-shock absorber; 9-pressure sensor. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] See attached Figure 1 To Attachment Figure 3 The embodiment of the present invention discloses an intelligent foundation treatment device integrating a grouting method and a compaction pile method, comprising:
[0035] An outer pile pipe 1, the top of the outer pile pipe 1 is provided with a filling port 4, the bottom of the outer pile pipe 1 is provided with a plurality of flap pile tips 5, and the plurality of flap pile tips 5 form a pointed structure;
[0036] An inner pile pipe 2, which is arranged inside the outer pile pipe 1 and has a grouting hole 6 on its wall;
[0037] A vibrating hammer 3 is arranged at the top of the outer pile pipe 1 .
[0038] In this embodiment, the vibrating hammer 3 and the outer pile pipe 1 are connected by fastening bolts through a flange at the bottom of the vibrating hammer 3 and a flange at the top outer wall of the outer pile pipe 1 .
[0039] In order to further optimize the above technical solution, an ultrasonic depth sensor 7 is provided on the top of the outer pile tube 1 .
[0040] In order to further optimize the above technical solution, a shock absorber 8 is installed in the middle of the outer pile pipe 1.
[0041] In order to further optimize the above technical solution, a pressure sensor 9 is installed at the lower part of the inner pile pipe 2 .
[0042] In order to further optimize the above technical solution, the valve pile tip 5 is controlled to open and close by a hydraulic cylinder installed on the inner wall of the outer pile tube 1.
[0043] In order to further optimize the above technical solution, the tops of the outer pile pipe 1 and the inner pile pipe 2 are provided with locking and limiting mechanisms, which limit the axial displacement of the outer pile pipe 1 and the inner pile pipe 2 .
[0044] In this embodiment, the locking and limiting mechanism is composed of a flange on the inner wall of the top of the outer pile pipe 1 and a flange on the top of the inner pile pipe 2 connected by fastening bolts, which is simple to connect and easy to disassemble and assemble.
[0045] In order to further optimize the above technical solution, the grouting hole 6 is a circular nozzle. The slurry is sprayed evenly with small flow resistance. The nozzle has no convex or concave, which is conducive to the up and down movement of the grouting pipe and can also prevent the slurry from being blocked or flowing poorly at the nozzle. The nozzle diameter is determined according to the grouting amount, grouting pressure and formation characteristics.
[0046] In order to further optimize the above technical solution, the outer pile pipe 1 is made of steel pipe.
[0047] In order to further optimize the above technical solution, the inner wall of the inner pile pipe 2 has a corrosion-resistant layer.
[0048] The method of the intelligent foundation treatment equipment that integrates the grouting method and the compaction pile method provided in this embodiment firstly sinks the outer pile pipe 1 into the foundation soil through the cooperation of the vibrating hammer 3 and the outer pile pipe 1; then the valve pile tip 5 is opened, and the outer pile pipe 1 is gradually raised, and during the raising process, sand and gravel are backfilled through the filling port 4; after the outer pile pipe 1 is completely pulled out and the backfilling is completed, grouting is performed through the inner pile pipe 2.
[0049] The key points of the design of this embodiment are:
[0050] 1. Multifunctional integrated design: The device cleverly combines the vibrating pipe compaction gravel pile method and the grouting method. First, the foundation soil is initially compacted by the vibrating pipe compaction gravel pile method to change the pore structure of the soil, improve the density of the soil, and create favorable conditions for subsequent grouting. Then, the grouting method is used to inject the prepared slurry into the soil to further fill the soil pores and improve the strength and stability of the foundation soil.
[0051] 2. Multifunctional pile pipe design: The outer layer is a high-strength steel pipe, which is used for hole forming and filling in compacted pile construction. A grouting channel is set in the inner layer, and the channel wall is made of corrosion-resistant material to ensure the smooth transportation of slurry during the grouting process.
[0052] 3. Intelligent control system integrated design:
[0053] Sensor system:
[0054] A depth sensor is installed on the pile pipe of the compaction pile construction device to accurately measure the depth of the pile pipe driven into the foundation.
[0055] Pressure sensors are installed along the grouting pump and grouting pipe of the grouting part to monitor the grouting pressure in real time.
[0056] Data acquisition and transmission module:
[0057] The data acquisition unit is designed to collect the depth, pressure and other data obtained by the sensor system in real time, and transmit these data to the control center via wired (such as optical fiber) or wireless (such as 4G / 5G communication module).
[0058] Intelligent control unit:
[0059] According to the preset construction process and rules, the intelligent control unit can realize the automatic sequence control of compaction pile construction and grouting construction. When the compaction pile construction is completed, the grouting equipment is automatically started and the grouting parameters are adjusted according to the soil data collected previously.
[0060] Based on the collected data, the built-in control algorithm is used to automatically adjust the construction parameters of the compaction pile (such as the pile pipe lifting speed) and the grouting parameters (such as the grouting pressure).
[0061] This embodiment is a composite pile pipe. The outer layer is made of high-strength steel and is used for countersinking and backfilling with sand and gravel. The vibrating hammer 3 is started to sink the pile pipe into the foundation soil to form a hole. When filling, the outer steel pipe is slowly pulled out. After the filling is compacted in layers, the inner grouting pipe is activated. The inner wall of the pipe is made of corrosion-resistant material. The slurry is injected into the grouting pipe through a grouting pump and transported to the nozzle to reinforce the foundation soil by high-pressure spraying.
[0062] Specifically, first activate the vibrating hammer 3 to sink the pile pipe into the foundation soil, compact the underground soil layer to form a hole. The filling port 4 is designed at the top of the entire pile pipe so that the pile pipe can sink to the maximum depth. In the process of the pile pipe sinking into the foundation, the ultrasonic depth sensor 7 installed on the upper part of the outer tube monitors the depth of the pile pipe sinking into the ground in real time and feeds back to the control center. When the pile pipe sinks to a depth close to the designed depth, the control center will control the pile pipe to continue to sink at a lower speed to achieve the target. During the sinking process, the pile pipe densifies the soil layer laterally, and the surrounding foundation soil is subjected to horizontal squeezing, so that the soil within a certain range around the pipe is displaced in all horizontal directions, reducing the porosity and increasing the density. After the compaction is completed, open the valve pile tip 5, then slowly pull out the outer steel pipe upward, inject sand and gravel into the filling ports on both sides, fill it into the hole through the pipeline, vibrate while filling sand and gravel while pulling out the pile pipe until the filling is completed.
[0063] The outer pile pipe 1 is provided with a shock absorber 8, which can effectively absorb and reduce the vibration caused by sinking and pulling out the pile pipe, and can control the vibration amplitude transmitted to the surrounding buildings within a safe range while ensuring the verticality and pile position accuracy.
[0064] The inner walls of the pipes with fillers on both sides are kept smooth to reduce the resistance of the backfill during transportation, avoid accumulation and blockage of the backfill in the pipes, and allow the backfill to smoothly pass through the pipes into the pile holes, thereby improving transportation efficiency.
[0065] The valve pile tip 5 is slowly opened by a hydraulic cylinder to avoid adverse effects on the compacted foundation soil.
[0066] After the filling is completed, the vibrating hammer 3 is removed, the grouting pump is connected to the inner grouting pipe, and the prepared grouting liquid is injected into the pores of the foundation soil around the compaction pile through the grouting pipe using the grouting pump. The prepared slurry is poured into the liquid storage tank, and the slurry is injected into the grouting pipe through the grouting pump. During the grouting process, the grouting pressure sensor monitors the grouting pressure in real time and feeds back to the control center. If the grouting pressure suddenly increases or the grouting amount suddenly decreases, it may be that the grouting pipe is blocked or the pores of the foundation soil are filled. The control center will adjust the grouting parameters in time so that the slurry can enter the soil evenly. After the slurry is injected, it is necessary to keep a period of static time to allow the slurry to fully diffuse in the soil, so that the piles and the soil between the piles form a stable overall structure, and improve the bearing capacity and impermeability of the soil.
[0067] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.
[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An intelligent foundation treatment device integrating grouting method and compaction pile method, characterized in that: include: An outer pile tube (1), wherein the top of the outer pile tube (1) is provided with a filling port (4), and the bottom of the outer pile tube (1) is provided with a plurality of flap pile tips (5), wherein the plurality of flap pile tips (5) form a pointed structure; An inner pile pipe (2), the inner pile pipe (2) being arranged inside the outer pile pipe (1), and having a grouting hole (6) on the pipe wall of the inner pile pipe (2); A vibrating hammer (3), wherein the vibrating hammer (3) is arranged at the top end of the outer pile pipe (1).
2. The intelligent foundation treatment equipment integrating grouting method and compaction pile method according to claim 1 is characterized in that: An ultrasonic depth sensor (7) is provided on the top of the outer pile tube (1).
3. The intelligent foundation treatment equipment integrating grouting method and compaction pile method according to claim 1 is characterized in that: A shock absorber (8) is installed in the middle of the outer pile pipe (1).
4. The intelligent foundation treatment equipment integrating grouting method and compaction pile method according to claim 1 is characterized in that: A pressure sensor (9) is installed at the lower part of the inner pile pipe (2).
5. The intelligent foundation treatment equipment integrating grouting method and compaction pile method according to claim 1 is characterized in that: The flap pile tip (5) is controlled to open and close by a hydraulic cylinder installed on the inner wall of the outer pile tube (1).
6. The intelligent foundation treatment equipment integrating grouting method and compaction pile method according to claim 1 is characterized in that: The tops of the outer pile tube (1) and the inner pile tube (2) are provided with locking and limiting mechanisms, and the locking and limiting mechanisms limit the axial displacement of the outer pile tube (1) and the inner pile tube (2).
7. The intelligent foundation treatment equipment integrating grouting method and compaction pile method according to claim 1 is characterized in that: The grouting hole (6) is a circular nozzle.
8. The intelligent foundation treatment equipment integrating grouting method and compaction pile method according to claim 1 is characterized in that: The outer pile pipe (1) is made of steel pipe.
9. The intelligent foundation treatment equipment integrating grouting method and compaction pile method according to claim 1 is characterized in that: The inner wall of the inner pile pipe (2) has a corrosion-resistant layer.
10. A method of intelligent foundation treatment equipment integrating grouting method and compaction pile method as claimed in any one of claims 1 to 9, characterized in that: Firstly, the outer pile pipe (1) is sunk into the foundation soil by the cooperation of the vibrating hammer (3) and the outer pile pipe (1); Then, the valve pile tip (5) is opened, and the outer pile pipe (1) is gradually raised. During the raising process, sand and gravel are backfilled through the filling port (4); after the outer pile pipe (1) is completely pulled out and the backfilling is completed, grouting is performed through the inner pile pipe (2).