Prefabricated assembly type foundation quick connection structure and method

Abstract

The present invention relates to the field of prefabricated foundation construction technology, specifically a prefabricated assembled foundation quick connection structure and method, which is arranged between a prefabricated column and a cup-shaped foundation. The cross-section of the prefabricated column is square, and includes a positioning support frame and a positioning support seat. The four sides of the upper and middle part of the prefabricated column are detachably mounted with positioning support frames, and the top of the cup-shaped foundation is detachably mounted with a positioning support seat that matches the positioning support frame. The prefabricated column is fixed on the positioning support seat by the positioning support frame. The positioning support frame is provided with a positioning plate, and the positioning support seat is provided with a positioning groove that matches the positioning plate. This connection structure and method moves the support positioning from the bottom of the cup-shaped foundation to the top, making it easier for construction personnel to observe and adjust, reducing construction difficulty and workload; a combination of guided positioning and precise positioning is used to improve installation accuracy; construction efficiency is greatly improved, the cycle is shortened, equipment costs are reduced, other processes are not affected, and the structure is detachable and reusable.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated foundation construction, and in particular to a prefabricated assembled foundation quick connection structure and method. Background Art

[0002] In the construction industry, with the accelerating pace of building industrialization, prefabricated structures are becoming a key development direction for modern architecture, thanks to their numerous advantages, including high construction efficiency, consistent quality, and environmental and energy-saving features. The connection between prefabricated columns and cup-shaped foundations, a common structural form, is widely used in various industrial and civil building foundations. The quality of these connections and their efficiency have a crucial impact on the safety, durability, and construction cycle of the entire project.

[0003] At present, in the existing technology, the connection method between the prefabricated column and the cup-mouth foundation mainly depends on the support and positioning structure set at the bottom of the cup-mouth foundation. The basic principle is to pre-set some positioning components and support devices at the bottom of the cup-mouth foundation. When installing the prefabricated column, the prefabricated column is lifted to the top of the cup-mouth foundation by lifting equipment, and then slowly lowered so that the bottom of the prefabricated column cooperates with the positioning components at the bottom of the cup-mouth foundation to achieve the positioning and support of the prefabricated column.

[0004] Since the support and positioning structure of the traditional connection method is set at the bottom of the cup-mouth foundation, it is difficult for construction workers to directly observe and operate the bottom structure during the installation process. During the lowering of the prefabricated columns, they can only judge whether the prefabricated columns are accurately positioned through external measuring instruments and experience. There is a lack of intuitive visual feedback. Once the position of the prefabricated columns is found to be deviated, the adjustment process is extremely cumbersome. Construction workers need to lift the prefabricated columns again and try to lower them again. Repeated debugging is required to make them basically meet the design requirements. This repeated lifting and debugging not only increases the construction difficulty and workload, but also prolongs the construction period and increases the project cost.

[0005] The space at the bottom of the cup-mouth foundation is relatively small, and there are many steel bars and concrete structures, which brings great difficulties to the installation and debugging of the positioning components. In actual construction, due to the influence of factors such as the installation error of the positioning components and the deformation during the concrete pouring process, the positioning accuracy of the bottom of the cup-mouth foundation is often difficult to meet the design requirements. During the lowering process, the prefabricated columns are affected by external factors such as the accuracy of the lifting equipment and wind force, and are prone to position deviation. These factors are superimposed on each other, resulting in deviations in the connection position between the prefabricated columns and the cup-mouth foundation, affecting the safety and stability of the entire structure.

[0006] The traditional connection method requires a lot of time for installation, adjustment and positioning operations. Every time the prefabricated columns are lifted and debugged, the lifting equipment needs to be on standby for a long time, which not only increases the rental cost and usage fee of the equipment, but also affects the progress of other construction processes. In addition, since the installation accuracy is difficult to guarantee, a lot of repair and reinforcement work is often required in the subsequent construction process, which further extends the construction period and reduces construction efficiency. In some large-scale engineering projects, the extension of the construction period may result in the project being unable to be delivered on time, causing huge economic losses to the construction unit.

[0007] In summary, the existing connection method of prefabricated columns and cup-shaped foundations, where both support and positioning are located at the bottom of the cup-shaped foundation, has many drawbacks and can no longer meet the construction efficiency and quality requirements of modern construction projects. Therefore, the development of a prefabricated foundation quick connection structure and method that facilitates installation and adjustment, improves installation accuracy and construction efficiency, and ensures stable quality has important practical significance and broad application prospects. Summary of the Invention

[0008] In order to solve the above problems, the present invention provides a prefabricated and assembled foundation quick connection structure and method, which moves the support positioning from the bottom of the cup-shaped foundation to the upper part, making it easier for construction personnel to observe and adjust, reducing the construction difficulty and workload; combining guided positioning with precise positioning to improve installation accuracy; greatly improving construction efficiency, shortening the cycle, reducing equipment costs, and not affecting other processes, and the structure can be disassembled and reused.

[0009] The technical solutions of the present invention are as follows:

[0010] A prefabricated assembled foundation quick connection structure is arranged between a prefabricated column and a cup-shaped foundation. The cross-section of the prefabricated column is square and includes a positioning support frame and a positioning support seat. The positioning support frames are detachably installed on the four sides of the upper and middle part of the prefabricated column, and the positioning support seat that matches the positioning support frame is detachably installed on the top of the cup-shaped foundation. The prefabricated column is fixed on the positioning support seat through the positioning support frame. A positioning plate is provided on the positioning support frame, and a positioning groove that matches the positioning plate is provided on the positioning support seat.

[0011] The positioning support frame includes a guide positioning support frame and three precision positioning support frames. The top of the cup base is provided with a guide positioning support seat matched with the guide positioning support frame and three precision positioning support seats matched with the precision positioning support frame; a cross positioning plate is provided at the bottom of the guide positioning support frame, the guide positioning support seat includes a cross positioning support seat, and the top of the cross positioning support seat is provided with a cross positioning groove matched with the cross positioning plate; a straight positioning plate is provided at the bottom of the precision positioning support frame, the precision positioning support seat includes a straight positioning support seat, and the top of the straight positioning support seat is provided with a straight positioning groove matched with the straight positioning plate, and the straight positioning groove is provided perpendicularly to the side of the prefabricated column;

[0012] The bottoms of the cross positioning groove and the straight positioning groove are on the same horizontal plane, the bottoms of the cross positioning plate and the straight positioning plate are on the same horizontal plane, and the top of the cross positioning groove is higher than the top of the straight positioning groove.

[0013] The straight-line positioning support seat is provided with a locking device for locking the straight-line positioning plate and the straight-line positioning support seat when the bottom of the straight-line positioning plate is against the bottom of the straight-line positioning groove.

[0014] The locking device includes a locking screw, a locking threaded hole is provided on the side of the S-shaped positioning support seat, and a locking hole corresponding to the locking threaded hole is provided on the lower part of the S-shaped positioning plate. One end of the locking screw cooperates with the locking hole. When the bottom of the S-shaped positioning plate is abutted against the bottom of the S-shaped positioning groove, the locking screw is screwed into the locking threaded hole so that the end of the locking screw is inserted into the locking hole.

[0015] Embedded plates are respectively provided on the four sides of the upper part of the prefabricated column, and the positioning support frame is fixedly connected to the embedded plates by bolts.

[0016] The notch of the cross positioning groove or the straight positioning groove is provided with a chamfer.

[0017] The bottom of the cross positioning plate or the straight positioning plate is provided with a chamfer.

[0018] A base I is provided at the bottom of the cross positioning support seat, and the base I is fixedly installed on the top of the cup mouth foundation through anchor bolts.

[0019] A base II is provided at the bottom of the one-line positioning support seat, and the base II is fixedly installed on the top of the cup mouth foundation through anchor bolts.

[0020] A prefabricated assembly foundation quick connection method comprises the following steps:

[0021] S1: Install a guide positioning support frame and three precision positioning support frames on the four sides of the prefabricated column respectively, and adjust them so that the bottoms of the cross positioning plate and the straight positioning plate are on the same horizontal plane;

[0022] S2: Install the guide positioning support seat and the precision positioning support seat on the top of the cup base, and adjust them so that the bottom of the cross positioning groove of the guide positioning support seat and the bottom of the straight positioning groove of the precision positioning support seat are on the same horizontal plane;

[0023] S3: Lift the assembled prefabricated column and slowly place it into the cup-shaped foundation. When the cross positioning plate is about to be inserted into the cross positioning groove, drag the prefabricated column so that the cross positioning plate is aligned with the cross positioning groove, and then the prefabricated column continues to fall.

[0024] S4: The cross positioning plate is inserted into the cross positioning groove and continues to fall, and the straight positioning plate is inserted into the straight positioning groove;

[0025] S5: When the bottom of the cross positioning plate or the straight positioning plate is against the bottom of the cross positioning slot or the straight positioning slot, screw in the locking screw so that the end of the locking screw is inserted into the locking hole;

[0026] S6: Fill the space between the precast column and the cup foundation with secondary grouting and perform curing;

[0027] S7: After the secondary grouting and curing is completed, the guide positioning support frame and the three precision positioning support frames are removed from the prefabricated columns, and the guide positioning support seat and the precision positioning support seat are removed from the cup mouth foundation.

[0028] The beneficial effects of the present invention are:

[0029] 1. The present invention discloses a prefabricated and assembled foundation quick connection structure and method. The prefabricated and assembled foundation quick connection structure and method move the support and positioning structure from the bottom of the cup-shaped foundation to the upper part, changing the problem of the traditional connection method in which the bottom space is small and the structure is complex, resulting in difficulty for construction workers to directly observe and operate the bottom structure, and installation and debugging are difficult; during the installation process, construction workers can intuitively observe and operate the upper structure. When the position of the prefabricated column deviates, there is no need to re-lift the prefabricated column for repeated debugging as in the traditional method. Adjustments can be made conveniently and quickly, greatly reducing the construction difficulty and workload.

[0030] 2. The present invention discloses a prefabricated and assembled foundation quick connection structure and method, which adopts a combination of guided positioning and precise positioning. The prefabricated column is first quickly positioned initially by a guided positioning support frame and a guided positioning support seat, and then precisely positioned by a precise positioning support frame and a precise positioning support seat. This effectively avoids the problem of easy deviation in the connection position caused by installation errors of the positioning components at the bottom of the cup-shaped foundation, deformation of concrete pouring, and interference from external factors such as the accuracy of the lifting equipment and wind force during the lowering of the prefabricated column in the traditional connection method. It significantly improves the connection accuracy between the prefabricated column and the cup-shaped foundation, ensures the safety and stability of the entire structure, and reduces the need for a large amount of repair and reinforcement work in the subsequent construction process due to insufficient installation accuracy.

[0031] 3. The present invention discloses a prefabricated and assembled foundation quick connection structure and method. The prefabricated and assembled foundation quick connection structure and method improve construction efficiency. Since installation and adjustment are more convenient and quick, and installation accuracy is effectively improved, the time for repeated debugging and subsequent repair and reinforcement is reduced, thereby greatly shortening the construction period. At the same time, there is no need for lifting equipment to be on standby for a long time for multiple lifting and debugging, which reduces the rental cost and usage fee of the equipment. The prefabricated column installation process will not affect the progress of other construction processes, thereby improving the overall construction efficiency, helping the project to be delivered on time, and avoiding economic losses to the construction unit.

[0032] 4. The present invention discloses a prefabricated assembled foundation quick connection structure and method, which ensures the stability and reliability of the connection between the prefabricated column and the cup-shaped foundation through precise positioning and a reliable locking device; the locking device locks the position of the two after the prefabricated column is in place to prevent loosening or displacement during use, thereby ensuring the quality stability of the structure.

[0033] 5. The present invention discloses a prefabricated assembled foundation quick connection structure and method. The positioning support frame and positioning support seat in the prefabricated assembled foundation quick connection structure and method are detachable and can be disassembled and reused after the secondary grouting and curing are completed, which not only ensures the connection quality but also reduces the material cost and meets the requirements of environmental protection and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] By reading the detailed description of the preferred embodiment below, the solutions and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0035] In the attached figure:

[0036] Figure 1This is a structural schematic diagram of a prefabricated assembly-type foundation quick connection structure according to an embodiment of the present invention;

[0037] Figure 2 for Figure 1 Partial view in the middle A direction;

[0038] Figure 3 for Figure 1 Partial view in the middle B direction;

[0039] Figure 4 for Figure 3 Middle CC section view;

[0040] The components represented by the reference numerals in the figure are:

[0041] The present invention: 1. Cup-mouth foundation, 2. Prefabricated column, 210. Embedded plate, 3. Secondary grouting, 4. Guide positioning support frame, 410. Cross positioning plate, 5. Precision positioning support frame, 510. Slotted positioning plate, 511. Locking hole, 6. Guide positioning support seat, 610. Base I, 620. Cross positioning support seat, 621. Cross positioning groove, 7. Precision positioning support seat, 710. Base II, 720. Slotted positioning support seat, 721. Locking threaded hole, 722. Slotted positioning groove, 8. Locking screw. DETAILED DESCRIPTION

[0042] like Figures 1 to 4 As shown, the prefabricated assembly type foundation quick connection structure is arranged between the prefabricated column 2 and the cup-shaped foundation 1. The cross section of the prefabricated column 2 is square. It is mainly composed of a positioning support frame, a positioning support seat and other auxiliary parts.

[0043] The positioning support frame includes a guide positioning support frame 4 and three precision positioning support frames 5; the guide positioning support frame 4 and the precision positioning support frame 5 are both made of steel and have sufficient strength and rigidity to withstand various forces during the installation process.

[0044] A cross positioning plate 410 is welded to the bottom of the guide positioning support frame 4 . The cross positioning plate 410 is a steel plate, and the size of its cross shape is adapted to the cross positioning groove 621 to be matched subsequently.

[0045] A straight positioning plate 510 is welded to the bottom of each precision positioning support frame 5. The straight positioning plate 510 is a steel plate, and its length direction is perpendicular to the side of the prefabricated column 2. A locking hole 511 is set at the lower part of the straight positioning plate 510.

[0046] Embedded plates 210 are respectively provided on the four sides of the upper part of the prefabricated column 2. The embedded plates 210 are steel plates, which are firmly connected to the steel frame of the prefabricated column 2 by welding steel bars. The positioning support frame is fixedly connected to the embedded plates 210 by bolts, which is convenient for installation and disassembly.

[0047] The positioning support seat includes a guide positioning support seat 6 matched with the guide positioning support frame 4 and three precision positioning support seats 7 matched with the precision positioning support frame 5; the guide positioning support seat 6 and the precision positioning support seat 7 are also made of steel.

[0048] The guide positioning support seat 6 is composed of a base I610 and a cross positioning support seat 620. The base I610 is a rectangular steel plate and is fixed to the top of the cup mouth foundation 1 by anchor bolts; the cross positioning support seat 620 is welded to the base I610, and a cross positioning groove 621 is set on the top thereof, and the groove is chamfered to facilitate the insertion of the cross positioning plate 410; the top of the cross positioning groove 621 is higher than the top of the subsequently set straight positioning groove 722.

[0049] Each precision positioning support 7 consists of a base II 710 and a straight-edge positioning support 720. Base II 710 is a rectangular steel plate, fixed to the top of the cup-shaped foundation 1 via anchor bolts. The straight-edge positioning support 720 is welded to base II 710. Its top is provided with a straight-edge positioning slot 722, perpendicular to the side of the precast column 2. The slot is chamfered to facilitate the insertion of the straight-edge positioning plate 510. A locking threaded hole 721 is provided on the side of the straight-edge positioning support 720, which mates with a locking screw 8.

[0050] The locking device includes a locking screw 8, which is made of stainless steel. A locking threaded hole 721 is provided on the side of the S-shaped positioning support seat 720, and a locking hole 511 corresponding to the locking threaded hole 721 is provided at the lower part of the S-shaped positioning plate 510; when the bottom of the S-shaped positioning plate 510 is abutted against the bottom of the S-shaped positioning groove 722, the locking screw 8 is screwed into the locking threaded hole 721 so that the end of the locking screw 8 is inserted into the locking hole 511, thereby locking the S-shaped positioning plate 510 and the S-shaped positioning support seat 720 to prevent the prefabricated column 2 from moving in the horizontal direction.

[0051] The notches of the cross positioning groove 621 or the straight positioning groove 722 are chamfered to facilitate the insertion of the positioning plate.

[0052] The bottom of the cross positioning plate 410 or the straight positioning plate 510 is also provided with a chamfer to facilitate insertion into the positioning groove.

[0053] The prefabricated foundation quick connection method includes the following steps:

[0054] 1. Install the positioning support frame on the prefabricated column:

[0055] Prepare a guide positioning support frame 4 and three precision positioning support frames 5, as well as corresponding bolts and other connecting parts.

[0056] Use bolts to install the guiding and positioning support frame 4 on the embedded plate 210 on one side of the prefabricated column 2, and ensure that the guiding and positioning support frame 4 is firmly installed by adjusting the tightness of the bolts.

[0057] Use bolts to install the three precision positioning support frames 5 on the embedded plates 210 on the other three sides of the prefabricated column 2 in sequence; during the installation process, use a spirit level to adjust the bottom of the cross positioning plate 410 and the straight positioning plate 510 so that they are on the same horizontal plane, and the horizontal error is controlled within ±1mm.

[0058] 2. Install the positioning support seat to the cup base:

[0059] Prepare a guide positioning support seat 6 and three precision positioning support seats 7, as well as fixing parts such as anchor bolts.

[0060] Use anchor bolts to fix the base I610 at the designated position on the top of the cup base 1, ensuring that the base I610 is firmly installed and the levelness error is controlled within ±1mm.

[0061] Use anchor bolts to fix the three bases II710 on the top of the cup base 1 and at the positions corresponding to the precision positioning support frame 5, ensuring that the base II710 is firmly installed and the levelness error is controlled within ±1mm.

[0062] Use a level to adjust the bottom of the cross positioning groove 621 of the guide positioning support seat 6 and the straight positioning groove 722 of the precision positioning support seat 7 so that they are on the same horizontal plane and the horizontal error is controlled within ±1mm.

[0063] 3. Hoisting prefabricated columns:

[0064] Use a crane to lift the prefabricated column 2 assembled with the positioning support frame and slowly move it toward the cup-mouth foundation 1.

[0065] When the cross positioning plate 410 is about to be inserted into the cross positioning groove 621 , the operator drags the prefabricated column 2 so that the cross positioning plate 410 is aligned with the cross positioning groove 621 , and then the prefabricated column 2 continues to fall slowly.

[0066] After the cross positioning plate 410 is inserted into the cross positioning groove 621, the prefabricated column 2 continues to fall, and the straight positioning plate 510 is gradually inserted into the corresponding straight positioning groove 722. During the falling process, closely observe the matching situation of the positioning plate and the positioning groove to ensure smooth insertion.

[0067] 4. Locking and positioning:

[0068] When the bottom of the straight-line positioning plate 510 is against the bottom of the straight-line positioning groove 722 (at this time, the bottom of the cross positioning plate 410 is also against the bottom of the cross positioning groove 621), use a wrench to screw the locking screw 8 into the locking threaded hole 721, so that the end of the locking screw 8 is inserted into the locking hole 511 of the straight-line positioning plate 510, and lock the straight-line positioning plate 510 with the straight-line positioning support seat 720 to ensure that the prefabricated column 2 will not move in the horizontal direction.

[0069] 5. Secondary grouting and maintenance:

[0070] Prepare the grouting material used for secondary grouting 3. The grouting material should have good fluidity, early strength and durability and meet the requirements of relevant standards.

[0071] Use grouting equipment to fill the grouting material used for secondary grouting 3 into the space between the prefabricated column 2 and the cup-shaped foundation 1, ensuring that the grouting material is filled densely without voids.

[0072] Carry out curing according to the instructions for use of the grouting material, keep the surface of the grouting material moist during curing, and the curing time is determined according to the performance of the grouting material and the ambient temperature, generally not less than 7 days.

[0073] 6. Remove the positioning support frame and positioning support seat:

[0074] After the secondary grouting 3 is cured, use a wrench or other tool to unscrew the bolts of the positioning support frame, and remove the guide positioning support frame 4 and the three fine positioning support frames 5 from the prefabricated column 2.

[0075] Use tools such as wrenches to remove the guide positioning support seat 6 and the fine positioning support seat 7 from the cup mouth foundation 1 to complete the installation process of the entire prefabricated assembled foundation quick connection structure.

[0076] Through the above detailed introduction to the structure and method, the prefabricated assembled foundation quick connection structure can realize the rapid and accurate connection between the prefabricated column and the cup-shaped foundation, thereby improving the construction efficiency and quality.

Claims

1. A prefabricated assembly type foundation quick connection structure, arranged between a prefabricated column (2) and a cup-shaped foundation (1), wherein the cross section of the prefabricated column (2) is square, and characterized in that: The prefabricated column (2) comprises a positioning support frame and a positioning support seat, wherein the positioning support frame is detachably mounted on the four side surfaces of the upper middle portion of the prefabricated column (2), and the positioning support seat matched with the positioning support frame is detachably mounted on the top of the cup base (1). The prefabricated column (2) is fixed on the positioning support seat through the positioning support frame, a positioning plate is provided on the positioning support frame, and a positioning groove matched with the positioning plate is provided on the positioning support seat; The positioning support frame comprises a guide positioning support frame (4) and three precision positioning support frames (5); a guide positioning support seat (6) matched with the guide positioning support frame (4) and three precision positioning support seats (7) matched with the precision positioning support frame (5) are provided on the top of the cup mouth base (1); a cross positioning plate (410) is provided at the bottom of the guide positioning support frame (4); the guide positioning support seat (6) comprises a cross positioning support seat (620); the top of the cross positioning support seat (620) is provided with a cross positioning groove (621) matched with the cross positioning plate (410); a straight positioning plate (510) is provided at the bottom of the precision positioning support frame (5); the precision positioning support seat (7) comprises a straight positioning support seat (720); the top of the straight positioning support seat (720) is provided with a straight positioning groove (722) matched with the straight positioning plate (510); the straight positioning groove (722) is provided perpendicular to the side of the prefabricated column (2); The bottoms of the cross positioning groove (621) and the straight positioning groove (722) are on the same horizontal plane, the bottoms of the cross positioning plate (410) and the straight positioning plate (510) are on the same horizontal plane, and the top of the cross positioning groove (621) is higher than the top of the straight positioning groove (722).

2. A prefabricated assembly-type quick-connect structure according to claim 1, characterized in that: The straight-line positioning support seat (720) is provided with a locking device for locking the straight-line positioning plate (510) and the straight-line positioning support seat (720) when the bottom of the straight-line positioning plate (510) is abutted against the bottom of the straight-line positioning groove (722).

3. A prefabricated assembly-type quick-connect structure according to claim 2, characterized in that: The locking device includes a locking screw (8), a locking threaded hole (721) is provided on the side of the one-line positioning support seat (720), and a locking hole (511) corresponding to the locking threaded hole (721) is provided at the lower part of the one-line positioning plate (510). One end of the locking screw (8) cooperates with the locking hole (511). When the bottom of the one-line positioning plate (510) is abutted against the bottom of the one-line positioning groove (722), the locking screw (8) is screwed into the locking threaded hole (721) so that the end of the locking screw (8) is inserted into the locking hole (511).

4. The prefabricated assembly-type quick-connect structure according to claim 1, characterized in that: Embedded plates (210) are respectively provided on the four side surfaces of the upper middle portion of the prefabricated column (2), and the positioning support frame is fixedly connected to the embedded plates (210) by bolts.

5. The prefabricated assembly-type quick-connect structure according to claim 1, characterized in that: The notch of the cross positioning groove (621) or the straight positioning groove (722) is provided with a chamfer.

6. The prefabricated assembly-type quick-connect structure according to claim 1, characterized in that: The bottom of the cross positioning plate (410) or the straight positioning plate (510) is provided with a chamfer.

7. The prefabricated assembly-type quick-connect structure according to claim 1, characterized in that: A base I (610) is provided at the bottom of the cross positioning support seat (620), and the base I (610) is fixedly mounted on the top of the cup mouth foundation (1) by anchor bolts.

8. The prefabricated assembly-type quick-connect structure according to claim 1, characterized in that: The bottom of the straight-line positioning support seat (720) is provided with a base II (710), and the base II (710) is fixedly mounted on the top of the cup mouth foundation (1) by anchor bolts.

9. A prefabricated and assembled foundation quick connection method, based on a prefabricated and assembled foundation quick connection structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Install a guide positioning support frame (4) and three precision positioning support frames (5) on the four sides of the prefabricated column (2), respectively, and adjust so that the bottoms of the cross positioning plate (410) and the straight positioning plate (510) are on the same horizontal plane; S2: Install the guide positioning support seat (6) and the precision positioning support seat (7) on the top of the cup base (1), and adjust them so that the bottoms of the cross positioning groove (621) of the guide positioning support seat (6) and the straight positioning groove (722) of the precision positioning support seat (7) are on the same horizontal plane; S3: hoist the assembled prefabricated column (2) and slowly place it into the cup-shaped foundation (1). When the cross positioning plate (410) is about to be inserted into the cross positioning groove (621), drag the prefabricated column (2) so that the cross positioning plate (410) is aligned with the cross positioning groove (621), and then the prefabricated column (2) continues to fall. S4: After the cross positioning plate (410) is inserted into the cross positioning groove (621), it continues to fall, and the straight positioning plate (510) is inserted into the straight positioning groove (722); S5: When the bottom of the cross positioning plate (410) or the straight positioning plate (510) is against the bottom of the cross positioning groove (621) or the straight positioning groove (722), the locking screw (8) is screwed in so that the end of the locking screw (8) is inserted into the locking hole (511); S6: Fill the space between the prefabricated column (2) and the cup foundation (1) with secondary grouting (3) and perform curing; S7: After the secondary grouting (3) is cured, the guide positioning support frame (4) and the three precision positioning support frames (5) are removed from the prefabricated column (2), and the guide positioning support seat (6) and the precision positioning support seat (7) are removed from the cup base (1).

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