Quick-construction cast-in-place pile casing and construction method

Abstract

The invention discloses a rapid construction cast-in-place pile casing and a construction method, and relates to the field of building construction. The pile casing is composed of two hinged semicircular pipe bodies, and iron rings are arranged on the outer wall of the pile casing to be connected with anchoring assemblies. The anchoring assembly comprises a stud shell with a sliding rail and a built-in threaded anchor bolt, and the bottom end of the anchor bolt is connected with a telescopic arc-shaped steel sheet. During construction, the anchor bolt is rotated to enable the steel sheet to be inserted into a soil body and expanded and fixed, and then the hook rod assembly is connected with the pile casing. The method breaks through the traditional limitation that earthwork needs to be backfilled firstly, and has the three advantages that (1) the anchoring assembly can be quickly disassembled and assembled and can be repeatedly used; (2) the modularized pile casing is convenient to open and close, and is firmly fixed by matching with a buckle; and (3) the backfilling excavation procedure is omitted, and the construction efficiency is improved. The method is particularly suitable for unfavorable geologies such as soft soil and quicksand, solves the problems of long construction period, difficulty in earthwork treatment, poor construction quality in rainy seasons and the like in the traditional process, and has remarkable economic benefits.

Description

Technical Field

[0001] The present invention relates to the field of building construction pouring, and particularly to a cast-in-place pile casing for rapid construction. Background Art

[0002] The casing (usually a steel cylinder) fixes the pile position during the hole-forming stage, is applicable to the construction field, and prevents the hole wall from collapsing caused by the erosion of loose soil layers, quicksand or groundwater. It is particularly indispensable under poor geological conditions such as soft soil and sand layers. The reasonable use and improvement of the casing device directly affect the success or failure of the pile foundation and the overall project benefit.

[0003] Currently in the construction industry, in the traditional cast-in-place pile construction, the conventional method is to first backfill the soil above the designed elevation of the pile top of the cast-in-place pile before construction. During the backfilling process, a large amount of soil is often required to be allocated, and corresponding mechanical equipment is used for backfilling and compaction operations, which takes a long time. After the cast-in-place pile is completed, excavation is required to remove the large amount of soil backfilled before. This requires the use of equipment such as excavators, and during the excavation process, attention should be paid to avoiding damage to the completed cast-in-place pile, because the cast-in-place pile is a key part of the foundation structure. Once damaged, it may affect the safety of the entire building. The excavated soil also needs to be reasonably stacked or transported. If the construction site is narrow, the soil stacking will occupy limited space and affect the progress of other processes. If external transportation is selected, it will increase the transportation cost and traffic pressure. In the rainy season, when backfilling the soil, a large amount of rainfall will cause the water content of the backfilled soil to increase sharply, which may cause the backfilled soil to become muddy and unable to be normally compacted. Moreover, if backfilling continues in this situation, the quality of the backfilled soil will decline, and problems such as settlement may occur later, which will also consume a lot of time, manpower and material resources. In terms of time, the backfilling and compaction of the soil, the construction of the cast-in-place pile, and the subsequent soil excavation are carried out in sequence. The delay of each link will lead to the lag of the entire project progress. Therefore, the cast-in-place pile after conventional backfilling and then construction has certain limitations. Summary of the Invention

[0004] In order to make up for the above deficiencies, the present invention provides a cast-in-place pile casing for rapid construction and a construction method. The cast-in-place pile casing for rapid construction breaks the conventional method of first backfilling the soil above the designed elevation of the pile top of the cast-in-place pile before construction, replaces the disadvantages of the conventional cast-in-place pile after backfilling the soil and then construction, and integrates the advantages of convenient installation, firm fixation, and reusable. During the construction process of the cast-in-place pile, it can effectively cope with various complex external force situations and ensure the construction safety and quality.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solution: The cast-in-place pile casing for rapid construction includes a casing, an anchoring component and a connecting component. The technical key point is that an iron ring is fixedly connected to the outer wall of the casing;

[0006] One end of the connecting component is detachably connected to the iron ring, and the anchoring component is detachably connected to the other end of the connecting component;

[0007] The connecting component includes a hook and a connecting rod, and the hook is arranged at one end of the connecting rod close to the casing;

[0008] The anchoring component includes a stud shell and a stud. The stud is arranged inside the stud shell. The stud includes a knob, an anchor bolt and a drill bit. The knob is arranged at the top end of the anchor bolt, and the drill bit is arranged at one end of the anchor bolt away from the knob.

[0009] Further, a slider is threadedly connected to the anchor bolt. A pulley is arranged on the outer wall of the slider, and a slide rail is arranged on the inner wall of the stud shell. The pulley is rotatably connected inside the slide rail.

[0010] Further, the casing is composed of two symmetric semi-cylindrical bodies. A hinge is rotatably connected between the two semi-cylindrical bodies. A fastening baffle is fixedly connected to one side of the casing away from the hinge, and a fastening buckle is detachably connected to the fastening baffle.

[0011] Further, a plurality of steel sheets are fixedly connected to the bottom end of the slider in a circumferentially uniform manner.

[0012] Further, the drill bit is a hollow cone.

[0013] Further, a limiting strip is fixedly connected to the outside of the stud shell.

[0014] Further, the steel sheet is an arc-shaped sheet and the bottom end is sharp.

[0015] Further, the steel sheet is arranged inside the drill bit.

[0016] The construction method of the cast-in-place pile casing for rapid construction includes the following steps:

[0017] When using the cast-in-place pile casing for rapid construction, first insert the drill bit into the construction site. Four steel sheets are connected below the slider. By rotating the anchor bolt, the slider drives the steel sheets to expand and contract in the soil;

[0018] When the anchor bolt is rotated, the slider will move vertically on the stud shell along the corresponding thread structure. If the anchor bolt is rotated clockwise, the slider will move downward, thereby driving the four steel sheets below to insert into the soil. The steel sheets ingeniously use arc-shaped sheets, which are more convenient to insert into the soil. As the slider continues to move downward, the steel sheets will gradually expand like an umbrella, making full contact with and interacting with the surrounding soil. During this process, the extrusion force generated by the expansion of the steel sheets will cause the soil to generate a reaction force on the steel sheets, and these reaction forces will help to further stabilize the anchor bolt. When disassembly is required, rotate the anchor bolt counterclockwise, the slider will move upward, and the steel sheets will contract accordingly, facilitating extraction from the soil. The rotation of the anchor bolt can be driven by turning the knob.

[0019] Place the casing on top of the already drilled pile hole, or choose to place the casing after the cast-in-place pile concrete has been poured to the existing ground level. Selecting the appropriate placement time can ensure that the casing is accurately positioned on the soil. Then, connect the anchoring component and the casing through the connecting component. The specific steps are to connect the hook to the iron ring, and both ends of the connecting rod are respectively connected to the hook and the stud shell. The three connecting components are respectively connected around the casing at uniform intervals. When disassembly is required, just disassemble the hook from the iron ring.

[0020] The present invention has the following beneficial effects:

[0021] 1. In the present invention, first, the rotation of the anchor bolt is used to make the slider drive the steel sheets to expand and contract in the soil. When the anchor bolt is rotated, the slider will move vertically on the stud shell along the corresponding thread structure. If the anchor bolt is rotated clockwise, the slider will move downward, thereby driving the four steel sheets below to insert into the soil. The steel sheets ingeniously use arc-shaped sheets, which are more convenient to insert into the soil. The whole process is relatively simple to operate, and the expansion and contraction of the steel sheets can be flexibly carried out according to the construction requirements, playing their corresponding roles in different construction stages. It can not only provide a stable support effect during construction but also facilitate subsequent disassembly and reuse, etc., improving the practicability and convenience of the device.

[0022] 2. In the present invention, the hook is connected to the iron ring, both ends of the connecting rod are respectively connected to the hook and the stud shell, and several connecting components are annularly and evenly distributed and connected to the casing, improving the stability and safety. When disassembly is required, just disassemble the hook from the iron ring. This operation realizes the convenient and firm connection between the stud shell and the casing through the connecting component. The casing can be closed and opened through the action of the hinge. The rotating fastening buckle can fix the fastening baffle. When the fastening baffle is fixed, it will drive the casing to be fixed, realizing the closing or opening of the casing, laying a foundation for subsequent fixing of the casing, achieving the function of free fixing and disassembly between various components, solving the cumbersome problems caused by the difficult disassembly between the casing and the anchoring component during the construction process, and improving the convenience and practicability of the device. Brief Description of the Drawings

[0023] Figure 1 It is a three - dimensional view of a cast - in - place pile casing for rapid construction proposed by the present invention;

[0024] Figure 2 It is a schematic diagram of the steel sheet structure of a cast - in - place pile casing for rapid construction proposed by the present invention;

[0025] Figure 3 It is a schematic diagram of the slider structure of a cast - in - place pile casing for rapid construction proposed by the present invention;

[0026] Figure 4 It is a schematic diagram of the stud shell structure of a cast - in - place pile casing for rapid construction proposed by the present invention;

[0027] Figure 5 It is a schematic diagram of the connecting rod structure of a cast - in - place pile casing for rapid construction proposed by the present invention.

[0028] Legend Explanation:

[0029] 1. Casing; 2. Iron ring; 3. Connecting rod; 4. Stud shell; 5. Hinge; 6. Soil body; 7. Hook; 8. Fastening buckle; 9. Fastening baffle; 10. Knob; 11. Limit strip; 12. Slide rail; 13. Pulley; 14. Anchor bolt; 15. Slider; 16. Drill bit; 17. Steel sheet. Detailed Embodiment

[0030] 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 of 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.

[0031] Refer to Figures 1-5 , an embodiment provided by the present invention: A cast - in - place pile casing for rapid construction, including a casing 1, an anchoring assembly, and a connecting assembly. An iron ring 2 is fixedly connected to the outer wall of the casing 1;

[0032] One end of the connecting assembly is detachably connected to the iron ring 2, and the anchoring assembly is detachably connected to the other end of the connecting assembly;

[0033] The connecting assembly includes a hook 7 and a connecting rod 3. The hook 7 is arranged at one end of the connecting rod 3 close to the casing 1;

[0034] The anchoring assembly includes a stud shell 4 and a stud. The stud is arranged inside the stud shell 4. The stud includes a knob 10, an anchor bolt 14, and a drill bit 16. The knob 10 is arranged at the top end of the anchor bolt 14, and the drill bit 16 is arranged at one end of the anchor bolt 14 away from the knob 10.

[0035] Embodiment 2

[0036] On the basis of Embodiment 1, a slider 15 is threadedly connected to the anchor bolt 14. A pulley 13 is arranged on the outer wall of the slider 15. A slide rail 12 is opened on the inner wall of the stud shell 4. The pulley 13 is rotatably connected inside the slide rail 12;

[0037] The casing 1 is composed of two symmetric semi-cylindrical bodies. A hinge 5 is rotatably connected between the two semi-cylindrical bodies. A fastening baffle 9 is fixedly connected to one side of the casing 1 away from the hinge 5. A fastening buckle 8 is detachably connected to the fastening baffle 9; the drill bit 16 is a hollow cone; a limiting strip 11 is fixedly connected to the outside of the stud shell 4; the steel sheet 17 is arranged inside the drill bit 16.

[0038] A construction method of a cast-in-place pile casing for rapid construction. When using this cast-in-place pile casing for rapid construction, first insert the drill bit 16 into the construction site. Four steel sheets 17 are connected below the slider 15. By rotating the anchor bolt 14, the slider 15 drives the steel sheets 17 to expand and contract in the soil. When the anchor bolt 14 is rotated, the slider 15 will move vertically along the corresponding threaded structure on the stud shell. If the anchor bolt 14 is rotated clockwise, the slider 15 will move downward, thereby driving the four steel sheets 17 below to insert into the soil. The steel sheets 17 are cleverly made of arc-shaped sheets, which are more convenient to insert into the soil. As the slider 15 continues to move downward, the steel sheets 17 will gradually expand like an umbrella, making full contact with and interacting with the surrounding soil. During this process, the extrusion force generated by the expansion of the steel sheets 17 will cause the soil to generate a reaction force on the steel sheets 17, and these reaction forces will help to further stabilize the anchor bolt 14. When disassembly is required, rotate the anchor bolt 14 counterclockwise, the slider 15 will move upward, and the steel sheets 17 will contract accordingly, facilitating extraction from the soil. The rotation of the anchor bolt 14 can be driven by rotating the knob 10. The whole process is relatively simple to operate, and the expansion and contraction of the steel sheets 17 can be flexibly carried out according to the construction requirements, playing their corresponding roles in different construction stages, being able to provide a stable support effect during construction and being convenient for subsequent disassembly and reuse work.

[0039] Place the casing 1 on the already drilled pile hole, or choose to place the casing after the cast-in-place pile concrete is poured to the existing ground level. Selecting the appropriate placement timing can ensure that the casing is accurately positioned on the soil mass 6. Then, connect the anchoring component and the casing 1 through the connecting component. The specific steps are to connect the hook 7 with the iron ring 2, and connect the two ends of the connecting rod 3 to the hook 7 and the stud shell 4 respectively. The three connecting components are evenly connected around the casing 1 at intervals of 120 degrees, which improves the stability and safety. When disassembly is required, just disassemble the hook 7 from the iron ring 2. This operation realizes the convenient and firm connection between the stud shell 4 and the casing 1 through the connecting component. The casing 1 can be closed and opened through the function of the hinge 5. Rotating the fastening buckle 8 can fix the fastening baffle 9. When the fastening baffle 9 is fixed, it will drive the casing 1 to be fixed, realizing the closing or opening of the casing 1, laying a foundation for the subsequent fixing of the casing 1, achieving the function of free fixing and disassembly between various components, solving the cumbersome problems caused by the difficult disassembly between the casing 1 and the anchoring component during the construction process, and improving the convenience and practicality of the device.

[0040] 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 for 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 quick-construction cast-in-place pile casing, comprising a casing (1), an anchoring assembly and a connecting assembly, characterized in that: An iron ring (2) is fixedly connected to the outer wall of the casing (1); One end of the connecting component is detachably connected to the iron ring (2), and the anchoring component is detachably connected to the other end of the connecting component; The connecting assembly comprises a hook (7) and a connecting rod (3), wherein the hook (7) is arranged at one end of the connecting rod (3) close to the casing (1); The anchor assembly comprises a bolt shell (4) and a bolt, wherein the bolt is arranged inside the bolt shell (4), and the bolt comprises a knob (10), an anchor bolt (14) and a drill bit (16), wherein the knob (10) is arranged at the top end of the anchor bolt (14), and the drill bit (16) is arranged at an end of the anchor bolt (14) away from the knob (10).

2. The quick-construction cast-in-place pile casing according to claim 1 is characterized by: The anchor bolt (14) is threadedly connected with a slider (15), the outer wall of the slider (15) is provided with a pulley (13), the inner wall of the bolt shell (4) is provided with a slide rail (12), and the pulley (13) is rotatably connected to the inside of the slide rail (12).

3. The quick-construction cast-in-place pile casing according to claim 1 is characterized by: The protective tube (1) is composed of two symmetrical semicircular tubes, a hinge (5) is rotatably connected between the two semicircular tubes, a fastening baffle (9) is fixedly connected to the side of the protective tube (1) away from the hinge (5), and a fastening buckle (8) is detachably connected to the fastening baffle (9).

4. The quick-construction cast-in-place pile casing according to claim 2 is characterized by: A plurality of steel sheets (17) are evenly and fixedly connected in an annular manner to the bottom end of the sliding block (15).

5. The quick-construction cast-in-place pile casing according to claim 4 is characterized by: The drill bit (16) is a hollow cone.

6. The quick-construction cast-in-place pile casing according to claim 1 is characterized by: The outer side of the bolt shell (4) is fixedly connected to a limiting strip (11).

7. The quick-construction cast-in-place pile casing according to claim 4 is characterized by: The steel sheet (17) is an arc-shaped sheet with a sharp bottom end.

8. The quick-construction cast-in-place pile casing according to claim 4 is characterized by: The steel sheet (17) is arranged inside the drill bit (16).

9. A method for constructing a cast-in-place pile casing for rapid construction according to any one of claims 1 to 8, characterized in that: The steps include: When the quick-construction cast-in-place pile casing is used, the drill bit (16) is first inserted into the construction site, and four steel sheets (17) are connected below the slider (15). The slider (15) drives the steel sheets (17) to retract and expand in the soil through the rotation of the anchor bolt (14). When the anchor bolt (14) is rotated, the slider (15) moves vertically on the bolt shell along the corresponding thread structure. If the anchor bolt (14) is rotated clockwise, the slider (15) moves downward, thereby driving the four steel sheets (17) below to be inserted into the soil. The steel sheets (17) cleverly use arc sheets, which are more convenient to insert into the soil. As the slider (15) continues to move downward, the steel sheets (17) gradually expand like an umbrella, fully contacting and interacting with the surrounding soil. In this process, the extrusion force generated by the expansion of the steel sheets (17) causes the soil to generate a reaction force on the steel sheets (17). These reaction forces help to further stabilize the anchor bolt (14). When it is necessary to disassemble, the anchor bolt (14) is rotated counterclockwise, the slider (15) moves upward, and the steel sheets (17) shrink accordingly, making it easier to extract them from the soil. The rotation of the anchor bolt (14) can be driven by turning the knob (10). The casing (1) is placed on the pile hole that has been drilled, or the casing is placed after the cast-in-place pile concrete is poured to the existing ground height. Choosing a suitable placement time can ensure that the casing is accurately positioned on the soil (6). Then, the anchor assembly and the casing (1) are connected through a connecting assembly. The specific steps are to connect the hook (7) with the iron ring (2), and the two ends of the connecting rod (3) are respectively connected to the hook (7) and the bolt shell (4). The three connecting assemblies are respectively and evenly connected to the casing (1) at intervals of (120) degrees. When disassembly is required, the hook (7) and the iron ring (2) are disassembled.

Images