Stirring pile construction method for pebble bed

Abstract

The invention relates to the technical field of mixing pile construction, in particular to a mixing pile construction method for a pebble bed. According to the stirring pile construction method for the pebble bed, the technical problems that in the prior art, a stirring pile construction process is low in construction efficiency, and the strength of a stirring pile cannot be guaranteed are solved. According to the mixing pile construction method for the pebble bed, the correction seat and the sleeve are arranged, and the correction seat is used for correcting the position of the sleeve and can assist in positioning the sleeve, so that the sleeve has higher position precision relative to the target position. Meanwhile, due to the fact that the correcting base positions the casing pipe after being cleaned at the target position, the casing pipe can be easily installed through the correcting base, the casing pipe has higher construction precision, the construction efficiency is effectively improved due to the fact that the casing pipe is easily installed, the correcting base is used for correcting the casing pipe, the position precision of the casing pipe is effectively guaranteed, and the construction efficiency of the casing pipe is improved. Therefore, the strength of the mixing pile can be effectively guaranteed, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mixing pile construction, and in particular to a mixing pile construction method for a pebble layer. Background Art

[0002] Cement mixing piles are a type of pile that uses cement as the main curing agent. Cement is sprayed into the soil using a mixing pile machine and fully mixed, so that a series of physical and chemical reactions occur between the cement and the soil to increase the strength of the foundation. Cement mixing piles are divided into single-axis, double-axis and triple-axis mixing piles according to the main construction methods used.

[0003] Mixing piles are difficult to construct when encountering thick and large pebble layers because the mixing piles cannot penetrate the stratum, resulting in low mixing pile construction efficiency and the inability to ensure the strength of the mixing piles.

[0004] Therefore, the existing technology of mixing pile construction has the technical problems of low construction efficiency and failure to ensure the strength of the mixing pile. Summary of the invention

[0005] The invention provides a mixing pile construction method for a pebble layer, which solves the technical problems in the prior art that the mixing pile construction process has low construction efficiency and the strength of the mixing pile cannot be guaranteed.

[0006] Some implementation plans adopted to solve the above technical problems include: A method for constructing a mixing pile in a pebble layer, comprising the following steps: Determine the target location; Clear the target location of debris; Cast a foundation seat at the target location after clearing the debris, the diameter of the foundation seat is not less than 3 times the diameter of the mixing pile, and a through hole for the construction of the mixing pile is reserved in the foundation seat; Arrange the upper surface of the base seat and make the flatness error of the upper surface no greater than 1 mm; Installing the calibration seat on the arranged base seat, and making the reference surface of the calibration seat contact with the upper surface of the base seat; Pressing the sleeve into the target position through the through hole, and making the guide fin on the sleeve match the correction groove of the correction seat; Using a drilling machine in conjunction with the casing to form a pile hole at a target location; Using pile holes to form mixing piles; After the mixing pile is solidified, the casing is taken out by using the tail wing of the casing to complete the construction.

[0007] Preferably, the correction seat is provided with a guide hole communicating with the through hole, and after the correction seat is installed on the arranged base seat, the coaxiality of the guide hole and the correction through hole is detected, and when the coaxiality of the guide hole and the correction hole meets the requirements, proceed to the next step; When the coaxiality between the guide hole and the correction hole does not meet the requirement, the coaxiality between the guide hole and the correction hole is corrected before proceeding to the next step.

[0008] Preferably, the coaxiality between the correction hole and the guide hole is adjusted by adjusting the posture of the correction seat; Among them, the correction seat is fixed to the base seat by threads, the base seat is pre-installed with a stud, the correction seat is provided with an assembly hole matching the stud, the stud is provided with a nut locking the correction seat to the base seat, and the posture of the correction seat is adjusted by arranging a gasket between the base seat and the correction seat, and the coaxiality of the guide hole and the correction hole meets the requirements.

[0009] Preferably, the construction of the foundation comprises the following steps: After clearing the debris, a foundation pit is excavated at the target location, the depth of which is not less than 1.5 times the diameter of the mixing pile; Sinking support ribs into the bottom wall of the foundation pit, wherein the support ribs are evenly distributed on the bottom of the foundation pit, and the support ribs are evenly distributed in the foundation pit, and the upper ends of the support ribs extend into the foundation pit; Reinforcing ribs are arranged in the foundation pit, the reinforcing ribs are staggered with the supporting ribs, and the reinforcing ribs are evenly distributed in the foundation pit, and the supporting ribs and the reinforcing ribs in the foundation pit are tied together by metal wires; Then pour concrete into the foundation pit, and complete the construction of the foundation seat after the concrete solidifies.

[0010] Preferably, after the concrete solidifies, the upper surface is polished to a flatness error of no more than 1 mm.

[0011] Preferably, the guide fin and the tail wing are staggered, and the guide fin and the tail wing are an integral structure with the sleeve.

[0012] Preferably, the tail fins are evenly arranged along the circumference of the sleeve, and the guide fins are evenly arranged along the circumference of the sleeve.

[0013] Preferably, the sleeve is provided with ribs, the ribs and the sleeve are an integral structure, and the ribs are provided at a portion of the sleeve corresponding to the tail wing, and there is a gap between the tail wing and the guide fin.

[0014] Preferably, the sleeve is provided with ribs, the ribs and the sleeve are an integral structure, and the ribs are provided at a portion of the sleeve corresponding to the tail wing, and there is a gap between the tail wing and the guide fin.

[0015] Preferably, the depth of the correction groove is not less than the height of the guide fin.

[0016] Compared with the prior art, the present invention has the following advantages: By setting the correction seat and the sleeve, the correction seat is used to correct the position of the sleeve, and can also assist in positioning the sleeve so that the sleeve has a higher position accuracy relative to the target position. At the same time, since the correction seat positions the sleeve after cleaning the target position, the setting of the correction seat can make the sleeve easy to install and make the sleeve have a higher construction accuracy. Since the sleeve is easy to install, the construction efficiency is effectively improved. Moreover, since the correction seat is used to correct the sleeve, the position accuracy of the sleeve is effectively guaranteed, and then the strength of the mixing pile can be effectively guaranteed, and the construction efficiency is improved.

[0017] The tail wing is set to facilitate the removal of the hydraulic vibration hammer and also strengthen the strength of the pipe mouth. In addition to improving the strength of the casing, the tail wing also makes the casing easy to operate, further improving the construction efficiency of the mixing pile.

[0018] By providing the guide fins, the guide fins can better guide the sleeve, so that the sleeve has a higher position accuracy. At the same time, the guide fins are usually in contact with the correction seat and the base seat, and the base seat positions the guide fins through the correction seat, further improving the position accuracy of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For the purpose of explanation, several embodiments of the present invention technology are described in the following drawings. The following drawings are incorporated into this text and constitute a part of the specific embodiment. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring the concept of the present invention subject technology.

[0020] Figure 1 It is a schematic diagram of the internal structure after the sleeve and the correction seat are matched.

[0021] Figure 2 This is a schematic diagram of the sleeve and the correction seat after matching.

[0022] Figure 3 A schematic diagram of the casing.

[0023] Figure 4 This is a schematic diagram of the calibration seat.

[0024] Figure 5 A schematic diagram of the base.

[0025] Figure 6 Flow chart of mixing pile construction method.

[0026] As shown in the figure: 1. Casing, 11. Guide fins, 12. Tail wing, 13. Ribs.

[0027] 2. Correction seat, 21. Correction groove, 22. Guide hole.

[0028] 3. Nut.

[0029] 100. Base.

[0030] 200. Target location. DETAILED DESCRIPTION

[0031] The specific embodiments shown below are intended to be descriptions of various configurations of the subject technology of the present invention, and are not intended to represent the only configuration by which the subject technology of the present invention can be put into practice. The specific embodiments include specific details intended to provide a thorough understanding of the subject technology of the present invention. However, it will be clear and obvious to those skilled in the art that the subject technology of the present invention is not limited to the specific details shown herein, and can be put into practice without these specific details.

[0032] It can be understood that, in this document, relational terms such as “first” and “second” are intended to distinguish one entity or operation from another entity or operation, and are not intended to express or imply any actual relationship or order between these entities or operations.

[0033] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0034] Reference Figures 1 to 5 As shown, in order to better understand the construction method of the mixing pile, before introducing the construction method, the casing 1 and the correction seat 2 used in the construction process are first introduced: The upper end of the sleeve 1 is provided with a tail wing 12 and a guide fin 11 , respectively. The tail wing 12 is located above the guide fin 11 .

[0035] The tail wing 12 is used to facilitate the operation of the sleeve 1, for example, sinking or pulling out, while the guide wing 11 is used to cooperate with the correction component to correct the position of the tube body.

[0036] The correction assembly includes a correction seat 2, on which a correction groove 21 is provided, and the guide wing 11 cooperates with the correction groove 21. During the construction of the mixing pile, the guide wing 11 cooperates with the correction seat 2 to better position the casing and make the casing have higher stability.

[0037] Reference Figures 1 to 6 As shown, a method for constructing a mixing pile for a pebble layer comprises the following steps: Determine the target position 200; Clear the target location of debris; Cast a base 100 at the target location after clearing the debris, the diameter of the base is not less than 3 times the diameter of the mixing pile, and a through hole for the mixing pile construction is reserved in the base; Arrange the upper surface of the base seat and make the flatness error of the upper surface no greater than 1 mm; Install the calibration seat 2 on the arranged base seat, and make the reference surface of the calibration seat 2 contact with the upper surface of the base seat; Press the sleeve 1 into the target position through the through hole, and make the guide fin 11 on the sleeve 1 match with the correction groove 21 of the correction seat 2; Using a drilling machine in conjunction with the casing to form a pile hole at a target location; Using pile holes to form mixing piles; After the mixing pile is solidified, the casing 1 is taken out using the tail wing 12 of the casing 1 to complete the construction.

[0038] In some embodiments, the correction seat 2 is provided with a guide hole 22 communicating with the through hole. After the correction seat 2 is installed on the arranged base seat, the coaxiality of the guide hole 22 and the correction through hole is detected. When the coaxiality of the guide hole 22 and the correction hole meets the requirements, proceed to the next step; When the coaxiality between the guide hole 22 and the correction hole does not meet the requirement, the coaxiality between the guide hole 22 and the correction hole is corrected before proceeding to the next step.

[0039] Reference Figures 1 to 6 As shown, in some embodiments, the coaxiality between the correction hole and the guide hole 22 is adjusted by adjusting the posture of the correction seat 2; Among them, the correction seat 2 is fixed to the base seat by threads, the base seat is pre-installed with a stud, the correction seat 2 is provided with an assembly hole matching the stud, and the stud is provided with a nut 3 for locking the correction seat 2 to the base seat. The posture of the correction seat 2 is adjusted by arranging a gasket between the base seat and the correction seat 2, and the coaxiality of the guide hole 22 and the correction hole meets the requirements.

[0040] In some embodiments, the construction of the base includes the following steps: After clearing the debris, a foundation pit is excavated at the target location, the depth of which is not less than 1.5 times the diameter of the mixing pile; Sinking support ribs into the bottom wall of the foundation pit, wherein the support ribs are evenly distributed on the bottom of the foundation pit, and the support ribs are evenly distributed in the foundation pit, and the upper ends of the support ribs extend into the foundation pit; Reinforcing ribs are arranged in the foundation pit, the reinforcing ribs are staggered with the supporting ribs, and the reinforcing ribs are evenly distributed in the foundation pit, and the supporting ribs and the reinforcing ribs in the foundation pit are tied together by metal wires; Then pour concrete into the foundation pit, and complete the construction of the foundation seat after the concrete solidifies.

[0041] In some embodiments, after the concrete solidifies, the upper surface is polished to a flatness error of no more than 1 mm.

[0042] Reference Figures 1 to 5 As shown, in some embodiments, the guide fin 11 and the tail fin 12 are staggered, and the guide fin 11 and the tail fin 12 are an integral structure with the sleeve 1.

[0043] Preferably, the tail fins 12 are evenly arranged along the circumference of the sleeve 1 , and the guide fins 11 are evenly arranged along the circumference of the sleeve 1 .

[0044] In some embodiments, the sleeve 1 is provided with ribs 13 , the ribs 13 and the sleeve 1 are an integral structure, and the ribs 13 are provided at a portion of the sleeve 1 corresponding to the tail wing 12 , and there is a gap between the tail wing 12 and the guide fin 11 .

[0045] In some embodiments, the sleeve 1 is provided with ribs 13 , the ribs 13 and the sleeve 1 are an integral structure, and the ribs 13 are provided at a portion of the sleeve 1 corresponding to the tail wing 12 , and there is a gap between the tail wing 12 and the guide fin 11 .

[0046] In some embodiments, the depth of the correction groove 21 is not less than the height of the guide fin 11 .

[0047] The following is a detailed introduction to the construction method of mixing piles: Determine the target position; determine the target position according to the design drawing, the target position is used to set the mixing pile position; Clean up the debris at the target location; the debris at the target location can be cleaned up by compacting or removing a portion of the material to obtain a relatively flat area; After clearing the debris, a foundation pit is excavated at the target location, the depth of which is not less than 1.5 times the diameter of the mixing pile; Sinking support ribs into the bottom wall of the foundation pit, wherein the support ribs are evenly distributed on the bottom of the foundation pit, and the support ribs are evenly distributed in the foundation pit, and the upper ends of the support ribs extend into the foundation pit; Reinforcing ribs are arranged in the foundation pit, the reinforcing ribs are staggered with the supporting ribs, and the reinforcing ribs are evenly distributed in the foundation pit, and the supporting ribs and the reinforcing ribs in the foundation pit are tied together by metal wires; Pour concrete into the foundation pit, and complete the construction of the foundation seat after the concrete solidifies, wherein the diameter of the foundation seat is not less than 3 times the diameter of the mixing pile, and a through hole for the construction of the mixing pile is reserved on the foundation seat; the upper surface of the foundation seat is arranged, and the flatness error of the upper surface is not greater than 1 mm; the correction seat 2 is installed on the arranged foundation seat, and the reference surface of the correction seat 2 is in contact with the upper surface of the foundation seat.

[0048] After the correction seat 2 is installed on the arranged base seat, the coaxiality of the guide hole 22 and the correction through hole is detected. When the coaxiality of the guide hole 22 and the correction hole meets the requirements, proceed to the next step; when the coaxiality of the guide hole 22 and the correction hole does not meet the requirements, correct the coaxiality of the guide hole 22 and the correction hole before proceeding to the next step. Specifically, the coaxiality of the correction hole and the guide hole 22 is adjusted by adjusting the posture of the correction seat 2; wherein, the correction seat 2 is fixed to the base seat by threads, the base seat is pre-set with a stud, the correction seat 2 is provided with an assembly hole that cooperates with the stud, and the stud is provided with a nut 3 for locking the correction seat 2 to the base seat, and the posture of the correction seat 2 is adjusted by arranging a gasket between the base seat and the correction seat 2, so that the coaxiality of the guide hole 22 and the correction hole meets the requirements.

[0049] Press the sleeve 1 into the target position through the through hole, and make the guide fin 11 on the sleeve 1 match with the correction groove 21 of the correction seat 2; Using a drilling machine in conjunction with the casing to form a pile hole at a target location; The mixing pile is formed by using the pile hole; the method of forming the mixing pile is based on the prior art; After the mixing pile is solidified, the casing 1 is taken out using the tail wing 12 of the casing 1 to complete the construction.

[0050] The above describes the subject technical solution and corresponding details of the present invention. It can be understood that the above description is only some implementation plans of the subject technical solution of the present invention, and some details may be omitted during the specific implementation.

[0051] In addition, in some embodiments of the above invention, multiple embodiments may be implemented in combination, and various combinations are not listed one by one due to space limitations. Those skilled in the art can freely combine and implement the above embodiments as needed in specific implementation to obtain a better application experience.

[0052] When implementing the subject technical solution of the present invention, those skilled in the art can obtain other detailed configurations or drawings based on the subject technical solution of the present invention and the drawings. Obviously, these details still fall within the scope covered by the subject technical solution of the present invention without departing from the subject technical solution of the present invention.

Claims

1. A method for constructing a mixing pile in a pebble layer, characterized in that The method comprises the following steps: determining a target position; cleaning up debris at the target position; pouring a base at the target position after cleaning up the debris, wherein the diameter of the base is not less than three times the diameter of the mixing pile, and a through hole is reserved on the base for the mixing pile construction; arranging the upper surface of the base, and making the flatness error of the upper surface not greater than 1 mm; installing a correction seat (2) on the arranged base, and making the reference surface of the correction seat (2) contact with the upper surface of the base; pressing a sleeve (1) into the target position through the through hole, and making the guide fins (11) on the sleeve (1) cooperate with the correction grooves (21) of the correction seat (2); forming a pile hole at the target position by using a drilling machine to cooperate with the sleeve; forming a mixing pile by using the pile hole; and after the mixing pile is solidified, taking out the sleeve (1) by using the tail fins (12) of the sleeve (1) to complete the construction.

2. The method for constructing a mixing pile in a pebble layer according to claim 1, characterized in that: The correction seat (2) is provided with a guide hole (22) communicating with the through hole. After the correction seat (2) is mounted on the arranged base seat, the coaxiality of the guide hole (22) and the correction through hole is detected. When the coaxiality of the guide hole (22) and the correction hole meets the requirements, the next step is entered; when the coaxiality of the guide hole (22) and the correction hole does not meet the requirements, the coaxiality of the guide hole (22) and the correction hole is corrected before entering the next step.

3. The method for constructing a mixing pile in a pebble layer according to claim 2, characterized in that: The coaxiality between the correction hole and the guide hole (22) is adjusted by adjusting the posture of the correction seat (2); wherein the correction seat (2) is fixed to the base seat by means of threads, the base seat is pre-set with a stud, the correction seat (2) is provided with an assembly hole that cooperates with the stud, and the stud is provided with a nut (3) for locking the correction seat (2) to the base seat, and the posture of the correction seat (2) is adjusted by providing a gasket between the base seat and the correction seat (2), so that the coaxiality between the guide hole (22) and the correction hole meets the requirements.

4. The method for constructing a mixing pile in a pebble layer according to claim 3, characterized in that: The construction of the foundation comprises the following steps: A foundation pit is excavated at the target location after the debris is cleared, and the depth of the foundation pit is not less than 1.5 times the diameter of the mixing pile; support bars are sunk into the bottom wall of the foundation pit, wherein the support bars are evenly distributed at the bottom of the foundation pit, and the support bars are evenly distributed in the foundation pit, and the upper ends of the support bars extend into the foundation pit; reinforcing bars are arranged in the foundation pit, and the reinforcing bars are staggered with the support bars, and the reinforcing bars are evenly distributed in the foundation pit, and the support bars in the foundation pit are tied with the reinforcing bars by metal wires; concrete is poured into the foundation pit, and the construction of the foundation seat is completed after the concrete solidifies.

5. The method for constructing mixing piles in a pebble layer according to claim 4, characterized in that: After the concrete solidifies, the flatness error of the upper surface is made to be no greater than 1 mm by grinding.

6. The method for constructing mixing piles in a pebble layer according to claim 1, characterized in that: The guide fin (11) and the tail fin (12) are arranged in a staggered manner, and both the guide fin (11) and the tail fin (12) are integral structures with the sleeve (1).

7. The method for constructing mixing piles for pebble layers according to claim 6, characterized in that: The tail fins (12) are evenly arranged along the circumference of the sleeve (1), and the guide fins (11) are evenly arranged along the circumference of the sleeve (1).

8. The method for constructing mixing piles in a pebble layer according to claim 7, characterized in that: The sleeve (1) is provided with a rib (13), the rib (13) and the sleeve (1) are an integral structure, and the rib (13) is provided at a portion of the sleeve (1) corresponding to the tail wing (12), and a gap is provided between the tail wing (12) and the guide wing (11).

9. The method for constructing mixing piles in a pebble layer according to claim 6, characterized in that: The ribs (13) comprise first ribs arranged along the circumference of the sleeve (1) and second ribs arranged along the axial direction of the sleeve (1), the second ribs and the first ribs being arranged in a grid pattern on the sleeve (1).

10. The method for constructing mixing piles for pebble layers according to claim 1, characterized in that: The depth of the correction groove (21) is not less than the height of the guide fin (11).

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