Spraying and stirring integrated cement-soil pile structure
The spray-mixed cement-soil pile structure that combines spraying and mixing solves the problem of difficult construction with multiple equipment, realizes efficient and low-cost cement-soil pile construction, and is suitable for sites with limited space.
Patent Information
- Application Number
- CN202421929392.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-08-09
AI Technical Summary
Existing cement soil pile construction requires multiple large-scale equipment, resulting in cramped construction sites, extended construction periods, and high costs.
A spray-mixed cement-soil pile structure is designed, which adopts the method of spraying as the main method and mixing as the auxiliary method. By combining the spraying device and the mixing blade, grouting can be achieved while drilling, simplifying equipment use and improving construction efficiency.
It significantly improves the pile quality, simplifies equipment use, reduces production costs, shortens construction period, and is suitable for construction sites with limited space.
Smart Images
Figure CN223329817U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of engineering construction and relates to a spray-mixed integrated cement-soil pile structure. Background Art
[0002] Cement soil piles require drilling and mixing. To prevent the cement from solidifying, large equipment such as mixers and pile drivers are required to complete the construction. This method has the following problems: when the construction site is cramped, multiple large equipment cannot enter at the same time, resulting in construction difficulties. Moreover, when the site is sufficient, the method of first driving the pile and then grouting the cement soil pile not only increases the production cost, but also leads to a longer overall construction period. Therefore, a spray-mixed cement soil pile structure is designed to overcome the above problems. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a spray-mixed cement-soil pile structure with a simple and reasonable structure, high construction efficiency, shortened construction period, and multiple functions. The spray-mixed cement-soil pile structure of this utility model mainly uses spraying, supplemented by mixing; on the basis of spraying, the innovative addition of mixing function can significantly improve the pile quality, greatly simplify the use of equipment, improve work efficiency, and reduce production costs.
[0004] The utility model is realized through the following technical scheme: a spray-mixed cement-soil pile structure, which includes a spray-mixed device mounted on a spray-mixed machine, and is characterized in that: the spray-mixed device is composed of a vertically arranged main drill rod and blades arranged on the drill rod, the main drill rod is composed of an upper auxiliary rod and a lower working rod, and the area of the upper auxiliary rod is smaller than that of the lower working rod, and the upper auxiliary rod and the lower working rod are hollow inside for placing working pipelines, the bottom of the lower working rod is provided with cutting teeth with water outlets, and blades are installed on the side of the working section above the cutting teeth, and the blades are connected to the hydraulic rod in the working section.
[0005] Preferably: the working pipeline includes a grouting pipeline, a hydraulic pipeline, a detection line pipeline, and a return slurry pipeline, wherein the grouting pipeline is arranged in the middle, and the hydraulic pipeline, the detection line pipeline, and the return slurry pipeline are arranged around the connection. The grouting pipeline is connected to the high-pressure cement nozzle arranged on the lower working rod, and the hydraulic pipeline is connected to the water nozzle and the water outlet on the auxiliary rod, which is convenient for loosening the soil during the drilling process. The detection line pipeline is arranged in the auxiliary rod and an underground pressure sensor is installed at the end to monitor the pressure during work. A return slurry pipeline is also arranged on the upper auxiliary rod, and a return slurry port is opened at the end of the return slurry pipeline to collect cement that flows back due to excessive pressure.
[0006] Preferably, the cutting teeth are detachably mounted on the bottom of the lower working rod, and are surrounded by a plurality of obliquely arranged water spray heads. By rotating and cutting while spraying water, the surrounding soil is softened for easier cutting.
[0007] Preferably, the number of the blades is at least three, two of which are perpendicular to the main drill rod when fully opened, and the remaining blade is arranged obliquely to the main drill rod when fully opened, forming a three-piece extension blade between the three blades to increase the overall stirring area.
[0008] Preferably, the grouting pipeline is connected to an external high-pressure cement pump, which is connected to a pulping machine, which is connected to a cement barrel, and mud is made by adding materials, which is then injected into the drilled deep hole through the grouting pipeline. The pulping machine is controlled by a generator.
[0009] Preferably, the main engine drill rod has an overall hexagonal structure.
[0010] The beneficial effects of the utility model are as follows:
[0011] 1. The spray-mixed cement soil pile structure of the utility model mainly uses spraying and supplemented by mixing. On the basis of spraying, the stirring function is innovatively added, which can significantly improve the quality of the pile, greatly simplify the use of equipment, and reduce production costs.
[0012] 2. The diameter of the jet pile of the utility model can reach 0.8m~2.8m, the total number of reinforcement piles is small, the construction efficiency is high, and the corresponding construction period can be saved;
[0013] 3. The diameter of the jet pile of the utility model is large, and the overlap between the piles is less wasteful. Under the condition of the same reinforcement range, a certain amount of engineering work can be saved;
[0014] 4. The air mixing part of this utility model only involves the labor and machinery costs of drilling holes, and does not require cement, which can save a certain amount of cost;
[0015] 5. The spraying pressure of the construction machinery of this utility model can reach more than 40MPa. It is a process of spraying combined with mixing, which has more reliable reinforcement quality and is suitable for reinforcing deep silty soil.
[0016] 6. The utility model can ensure the matching degree between the lifting speed and the slurry flow, achieve refined control and ensure the quality of pile formation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0018] Figure 2 It is a structural diagram of the pipeline in this utility model. DETAILED DESCRIPTION
[0019] In order to enable those skilled in the art to more clearly understand the purpose, technical solutions and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.
[0020] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "horizontal", and "vertical" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or original referred to must have a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0021] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1-2 As shown, a spray-mixed cement-soil pile structure includes a spray-mixing device mounted on a spray-mixing machine, the spray-mixing device consists of a vertically arranged main drill rod 1 and a blade 2 arranged on the drill rod, the main drill rod 1 consists of an upper auxiliary rod 3 and a lower working rod 4, and the area of the upper auxiliary rod 3 is smaller than that of the lower working rod 4, and the upper auxiliary rod 3 and the lower working rod 4 are hollow inside for placing working pipelines, the bottom of the lower working rod 4 is provided with a cutting tooth 6 with a water outlet 5, and a blade 2 is installed on the side of the working section above the cutting tooth 6, and the blade 2 is connected to a hydraulic rod in the working section (not shown in the figure).
[0022] The spray-mixed cement soil pile structure of the utility model mainly uses spraying and supplemented by mixing. On the basis of spraying, the stirring function is innovatively added, which can significantly improve the quality of the pile, greatly simplify the use of equipment, improve work efficiency, and reduce production costs.
[0023] The working pipeline includes a grouting pipeline 7, a hydraulic pipeline 8, a detection line pipeline 9, and a return slurry pipeline 10, wherein the grouting pipeline 7 is arranged in the middle, and the hydraulic pipeline 8, the detection line pipeline 9, and the return slurry pipeline 10 are arranged around the connection. The grouting pipeline 7 is connected to the high-pressure cement nozzle 11 arranged on the lower working rod 4, and the hydraulic pipeline 8 is connected to the sprinkler head 12 and the water outlet 5 on the auxiliary rod, which is convenient for loosening the soil during the drilling process. The detection line pipeline 9 is arranged in the auxiliary rod and has an underground pressure sensor 14 installed at the end to monitor the pressure during work. A return slurry pipeline 10 is also arranged on the upper auxiliary rod 3, and a return slurry port 13 is opened at the end of the return slurry pipeline 10 to collect cement that flows back due to excessive pressure.
[0024] The cutting teeth 6 are detachably mounted on the bottom of the lower working rod 4 and are surrounded by a plurality of obliquely arranged water spray heads 12. By rotating and cutting while spraying water, they soften the surrounding soil and facilitate cutting. There are at least three blades 2, two of which are perpendicular to the main drill rod 1 when fully opened, and the remaining blade 2 is arranged obliquely to the main drill rod 1 when fully opened. These three blades 2 form a three-way expansion blade, which is used to increase the overall mixing area and thus ensure the quality of the pile.
[0025] The grouting pipeline 7 is connected to an external high-pressure cement pump (not shown in the figure), which is connected to a pulping machine, which is connected to a cement barrel. Mud is made by adding materials, and then injected into the drilled deep hole through the grouting pipeline. The pulping machine is controlled by a generator (not shown in the figure).
[0026] The main engine drill rod is in a hexagonal structure as a whole.
[0027] The overall working process of the utility model is as follows:
[0028] After the equipment of the present invention is turned on, water is discharged through the water outlet hole at the bottom of the lower working rod to moisten the soil, and then the cutting teeth are used to cut and rotate the hole. The entire main drill rod slowly extends into the soil as the spray mixing machine operates. When the main drill rod extends to a certain depth, the blades are opened by the hydraulic rod, and the spray mixing machine pulls the main drill rod back upward. While the main drill rod is grouting through the grouting pipeline, the blades rotate to stir the cement. The main drill rod slowly rises to the ground until it is separated from the soil. At this time, the cement filled with the rotating hole will solidify after a period of time to form the final cement-soil pile. Compared with the method of drilling first and then grouting, this method of drilling and grouting at the same time is simple and efficient as the whole process, saves costs, and also improves the quality of piles.
[0029] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, any equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this utility model shall be covered by the claims of this utility model.
Claims
1. A spray-mixed cement-soil pile structure, comprising a spray-mixed device mounted on a spray-mixed machine, characterized in that: The jet stirring device consists of a vertically arranged main drill rod and blades arranged on the drill rod. The main drill rod consists of an upper auxiliary rod and a lower working rod. The area of the upper auxiliary rod is smaller than that of the lower working rod. The upper auxiliary rod and the lower working rod are hollow inside for placing working pipelines. The bottom of the lower working rod is provided with cutting teeth with water outlets. Blades are installed on the side of the working section above the cutting teeth, and the blades are connected to the hydraulic rod in the working section.
2. The spray-mixed cement-soil pile structure according to claim 1, characterized in that: The working pipeline includes a grouting pipeline, a hydraulic pipeline, a detection line pipeline, and a return slurry pipeline, wherein the grouting pipeline is arranged in the middle, and the hydraulic pipeline, the detection line pipeline, and the return slurry pipeline are arranged around the connection. The grouting pipeline is connected to the high-pressure cement nozzle arranged on the lower working rod, and the hydraulic pipeline is connected to the water head and the water outlet on the auxiliary rod, which is convenient for loosening the soil during the drilling process. The detection line pipeline is arranged in the auxiliary rod and an underground pressure sensor is installed at the end to monitor the pressure during work. A return slurry pipeline is also arranged on the upper auxiliary rod, and a return slurry port is opened at the end of the return slurry pipeline to collect cement that flows back due to excessive pressure.
3. The spray-mixed cement-soil pile structure according to claim 1, characterized in that: The cutting teeth are detachably mounted on the bottom of the lower working rod, and are surrounded by a plurality of obliquely arranged water spray heads. By rotating and cutting while spraying water, the surrounding soil is softened for easier cutting.
4. The spray-mixed cement-soil pile structure according to claim 1, characterized in that: The number of the blades is at least three, two of which are perpendicular to the main drill rod when fully opened, and the remaining blade is arranged obliquely to the main drill rod when fully opened, forming a three-piece extension blade between the three blades to increase the overall mixing area.
5. The spray-mixed cement-soil pile structure according to claim 2, characterized in that: The grouting pipeline is connected to an external high-pressure cement pump, which is connected to a pulping machine, which is connected to a cement barrel. Mud is made by adding materials and then injected into the drilled deep hole through the grouting pipeline. The pulping machine is controlled by a generator.
6. The spray-mixed cement-soil pile structure according to claim 1, characterized in that: The main engine drill rod is in a hexagonal structure as a whole.