Plug-in cup mouth type foundation matching steel column leveling device and mounting method

Abstract

The invention discloses a plug-in cup-shaped foundation matched steel column leveling device and a mounting method, belongs to the technical field of full-prefabricated steel structures, can give full play to the strength of an anchor rod through anchoring of an end plate and a bolt, provides better bending bearing capacity for an outer wrapping column base, and improves the construction efficiency. And the calculation steel consumption of the longitudinal bars on the outer side of the outer wrapping column base can be correspondingly reduced. The adjustable hoop type fastening device is a temporary fastening device and is combined with a vertical leveling fastening device for action, multi-point contact fastening with a steel column is achieved, and the problem that the steel column is reliable and stable before cup opening grouting only through single-point fastening of the vertical leveling fastening device is solved. As the engineering cost can be remarkably reduced through repeated use, although certain cost investment exists in the initial stage, the actual use cost can be greatly reduced through repeated turnover use, the resource waste is reduced, and the concept of green construction is met.

Description

Technical Field

[0001] This invention belongs to the technical field of fully prefabricated assembled steel structures, specifically relating to an insert-type cup-shaped foundation with a matching steel column leveling device and installation method. Background Technology

[0002] With the industrial transformation and upgrading of the construction industry and the arrival of the Industry 2.0 era, prefabricated buildings are an inevitable trend for the future development of the construction industry. Prefabricated buildings can greatly reduce on-site wet work and transfer a large amount of on-site construction work to factories. Prefabricated buildings disassemble buildings into standardized building components, which are then processed and manufactured in factories and reliably connected on-site to form a building.

[0003] Prefabricated buildings mainly include prefabricated concrete structures, steel structures, and wood structures. Steel structures, due to their standardized processing, industrialized production, and assembly construction, are highly regarded by industry professionals as a representative of highly industrialized construction methods. They truly enable the construction of houses like cars, and represent the main direction for the future development of prefabricated steel structures.

[0004] Inserted cup-shaped foundations are a suitable foundation type for steel columns and are currently widely used in industrial and civil buildings. However, after construction, the precast steel columns need to form a complete whole with the foundation, which inevitably involves temporary fixing and leveling of the steel columns and the foundation, as well as secondary grouting of the steel columns and the cup-shaped groove. Due to the height of the steel columns, traditionally, assembly is often carried out using tower cranes supplemented by manual labor. The large gap between the steel column and the cup-shaped groove makes it difficult to accurately control the horizontal and vertical positions of the steel column, resulting in significant installation misalignment. Furthermore, due to the weight of the steel columns, it is difficult to quickly straighten them manually, leading to low assembly efficiency. Multiple straightening operations are often required during assembly, severely reducing the installation efficiency of vertical components in prefabricated buildings. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an insert-type cup-shaped foundation with a matching steel column leveling device and installation method to solve the problems mentioned in the background art or achieve better technical effects.

[0006] In order to solve the above-mentioned technical problems, the inventors derived the technical solution of the present invention through practice and summary. The present invention discloses an insert-type cup-shaped foundation matching steel column leveling device, including a vertical leveling and fastening device and a horizontal leveling and fastening device pre-embedded in the cup groove. The vertical leveling and fastening devices are evenly distributed around the upper steel column, and the horizontal leveling and fastening devices are installed on the upper part of the cup of the fully prefabricated foundation and distributed at both ends of the cup.

[0007] Several sets of vertical leveling devices are connected by a vertical leveling horizontal ring plate. A through hole is opened at the center of the vertical leveling horizontal ring plate. The diameter of the through hole is adapted to the diameter of the upper steel column, which facilitates the connection of the upper steel column and enhances the support and fixation function.

[0008] Furthermore, the vertical leveling and fastening device includes a leveling anchor bolt, a matching leveling nut, a backstop nut, and corresponding matching washers, all built into the precast foundation. The upper end of the leveling anchor bolt is threaded near the port, and the leveling nut engages with the thread of the leveling anchor bolt, allowing the leveling nut to be freely adjusted up and down along the leveling anchor bolt.

[0009] Furthermore, the anti-reverse nut is threaded to engage with the leveling anchor bolt. After the leveling nut is adjusted to the correct position, the upper steel column and the leveling anchor bolt can be effectively secured.

[0010] Furthermore, a matching washer is provided between the leveling nut and the vertical leveling ring plate, and the size of the matching washer exceeds 80mm×80mm.

[0011] Furthermore, the upper steel column fixing vertical leveling ring plate has through holes on its upper and lower surfaces at the positions corresponding to the vertical leveling fastening devices, and the hole size is 3~5mm larger than the size of the leveling anchor bolt.

[0012] Furthermore, the vertical leveling ring plate and the upper steel column are fully welded together in the factory, and the vertical leveling fastening device forms a permanent fastening device by connecting the vertical leveling ring plate.

[0013] Furthermore, the leveling and fastening device includes a leveling device fixing plate and a leveling device plate. The leveling device fixing plate has several sets of insertion holes, and each insertion hole is equipped with a corresponding leveling device fixing anchor bolt. The leveling device fixing plate is fixedly connected to the cup mouth of the fully prefabricated foundation through the anchoring effect of the leveling device fixing anchor bolt.

[0014] Furthermore, the leveling device fixing plate and the leveling device plate are movably connected by a special pin. The ends of the leveling device fixing plate and the leveling device plate of the horizontal leveling fastening device are welded with pin sleeves. The leveling device fixing plate and the leveling device plate are connected by a special pin and pin sleeve in series to realize the connection function of the leveling device fixing plate and the leveling device plate.

[0015] Furthermore, both the leveling device fixing plate and the leveling device plate are welded with connecting lugs, and an adjustable special support rod is movably connected between the connecting lugs. The adjustable special support rod is matched with an adjustable threaded sleeve.

[0016] Furthermore, the installation method of the steel column leveling device for any of the above-mentioned insert-type cup-shaped foundations comprises the following steps:

[0017] S1: After the prefabricated foundation is installed in place, insert the upper steel column into the cup of the prefabricated foundation, install the leveling nut of the vertical leveling device, and perform vertical leveling of the upper steel column. After vertical leveling, install the fastening nut to perform preliminary fastening of the upper steel column.

[0018] S2: Install an adjustable clamp-type leveling device on the upper part of the precast foundation cup opening. Before installation, check whether the leveling device fixing plate and the leveling device plate are reliably connected with the special pin. Adjust the position of the leveling device fixing plate and fix it to the foundation cup opening with the leveling device fixing bolts. Connect the adjustable special support rod to the leveling device fixing plate and the leveling device plate's special connecting ear plate with the ear plate connecting pin.

[0019] S3: By continuously checking and adjusting the leveling nuts of the vertical leveling fastening device and the adjustable threaded sleeves of the horizontal leveling device, the vertical leveling horizontal ring plate of the upper steel column is completely horizontal, meeting the quality requirements of the verticality and planar coordinate position of the steel column.

[0020] S4: Finally, tighten the fastening nuts of the vertical leveling fastening device and install the anti-reverse nut. Tighten the fastening nuts of the adjustable threaded sleeve and the fastening screws until the upper steel column is completely and reliably fixed to the fully prefabricated foundation.

[0021] S5: Perform secondary pouring of precast foundation cup-shaped concrete until the concrete strength inside the cup-shaped cup reaches 50% of the design strength of the concrete, and remove the horizontal leveling and fastening device.

[0022] S6: Finally, the reinforcement of the outer column base is tied and the concrete is poured a second time. The leveling device is completed along with the steel column installation.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] (1) The present invention adopts the above-mentioned double leveling device, which mainly solves the problem of the difficulty of fixing steel columns in cup-shaped foundations. Compared with the prior art, the double leveling device can maximize the loosening of the horizontal and vertical positions of the steel columns during construction, thus better ensuring the quality of the project.

[0025] (2) The leveling screw in the vertical leveling device of the present invention not only plays the role of vertical support for the steel column during leveling, but also serves as a force-bearing member on the outside of the outer column base. It can also reduce the reinforcement on the outside of the outer column base to a certain extent and improve the bending bearing capacity of the outer column base.

[0026] (3)The adjustable hoop-type leveling device of the present invention is designed as a temporary device, which realizes one-time investment in cost and multiple repeated uses, better controls the usage cost of the device, and reduces the waste of resources, meeting the concept of green construction.

[0027] (4)The present invention changes the problems of manual adjustment and control in the installation of steel columns in the past, such as extensive construction process and low production efficiency. By adopting the supporting leveling device, the concept of high-efficiency assembly of steel structures is realized, and the installation time of the foundation and steel columns can be saved to a large extent. Brief Description of the Drawings

[0028] Figure 1 Isometric schematic diagram of the leveling device for the steel column supporting the insertable cup-shaped foundation of the present invention;

[0029] Figure 2 Split three-dimensional schematic diagram of the horizontal leveling device of the present invention;

[0030] Figure 3 Front view structure schematic diagram of the leveling device for the steel column supporting the insertable cup-shaped foundation of the present invention;

[0031] Figure 4 Split structure schematic diagram of the horizontal leveling device of the present invention;

[0032] Figure 5 Position schematic diagram of the vertical leveling horizontal ring plate of the present invention;

[0033] Figure 6 Structure schematic diagram of the vertical leveling device of the present invention.

[0034] Reference Signs:

[0035] 1, fully precast foundation;

[0036] 2, upper steel column;

[0037] 3, vertical leveling fastening device;

[0038] 4, horizontal leveling fastening device;

[0039] 5, leveling device fixing plate member;

[0040] 6, leveling device plate member;

[0041] 7, special pin shaft;

[0042] 8, anchor bolt for fixing the leveling device;

[0043] 9, adjustable special strut;

[0044] 10, adjustable threaded sleeve;

[0045] 11, cone head;

[0046] 12. Seal the plate;

[0047] 13. Tighten the nuts;

[0048] 14. Fastening screws;

[0049] 15. Connect the ear plate;

[0050] 16. Pins for connecting ear plates;

[0051] 17. Vertically level the horizontal ring plate;

[0052] 18. Pin holes for ear plate connection;

[0053] 19. Support rod connecting ear plate;

[0054] 20. Leveling anchor bolts;

[0055] 21. Precast beams;

[0056] 22. Adjust the leveling nut;

[0057] 23. Locking nut;

[0058] 24. Gasket. Detailed Implementation

[0059] To make the above-mentioned objectives, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to specific examples.

[0060] Example 1

[0061] like Figures 1-6 As shown, an insert-type cup-shaped foundation with matching steel column leveling device includes: vertical leveling and fastening devices 3 and horizontal leveling and fastening devices 4 pre-embedded in the cup groove. The vertical leveling and fastening devices 3 are evenly distributed around the upper steel column 2, and the horizontal leveling and fastening devices 4 are installed on the upper part of the cup of the precast foundation 1 and distributed at both ends of the cup. Several sets of vertical leveling devices 3 are connected by a vertical leveling horizontal ring plate 17. A through hole is opened at the center of the vertical leveling horizontal ring plate 17. The diameter of the through hole is adapted to the diameter of the upper steel column 2, which facilitates the connection of the upper steel column 2 while enhancing the support and fixation function.

[0062] The vertical leveling and fastening device 3 includes a leveling anchor bolt 20, a matching leveling nut 22, a backstop nut 23, and corresponding matching washers 24, all built into the precast foundation 1. The upper end of the leveling anchor bolt 20 is threaded near the port. The leveling nut 22 engages with the thread of the leveling anchor bolt 20, allowing the leveling nut 22 to be freely adjusted up and down along the leveling anchor bolt 20. The backstop nut 23 engages with the thread of the leveling anchor bolt 20 and is used to effectively fasten the upper steel column 2 to the leveling anchor bolt 20 after the leveling nut 22 is adjusted to the correct position. To ensure reliable fastening between the leveling nut 22 and the vertical leveling horizontal ring plate 17, a matching washer 24 is added between the leveling nut 22 and the vertical leveling horizontal ring plate 17. The size of the matching washer 24 is not less than 80mm × 80mm.

[0063] The upper steel column 2 is fixed with a vertical leveling ring plate 17. The upper and lower surfaces are drilled through holes at the corresponding positions of the vertical leveling fastening device 3. The size of the holes must be 3-5 mm larger than the size of the leveling anchor bolt 20 to facilitate the effective adjustment of the horizontal position of the upper steel column 2.

[0064] In addition to leveling the vertical elevation and verticality of the upper steel column 2, the vertical leveling and fastening device 3 of the present invention can also provide temporary support for the upper steel column 2 before grouting of the cup trough.

[0065] Preferably, the vertical leveling ring plate 17 and the upper steel column 2 are fully welded together in the factory. The vertical leveling fastening device 3 forms a permanent fastening device by connecting the vertical leveling ring plate 17. The vertical leveling anchor bolt 20 is embedded in the foundation at the same time as the cup-shaped foundation is poured. Before the cup-shaped foundation is grouted, it bears the entire self-weight of the upper steel column 2. After the cup-shaped foundation is grouted, it becomes part of the outer column base of the upper steel column 2. The anchoring of the vertical leveling ring plate 17 and the leveling anchor bolt 20 can fully utilize the strength of the entire vertical leveling fastening device 3, provide better bending bearing capacity for the outer column base, and also reduce the amount of steel used for the calculated longitudinal reinforcement on the outer side of the outer column base.

[0066] The horizontal leveling and fastening device 4 includes a leveling device fixing plate 5 and a leveling device plate 6. The leveling device fixing plate 5 has several sets of insertion holes, and each insertion hole is equipped with a corresponding leveling device fixing anchor 8. The leveling device fixing plate 5 is fixedly connected to the cup mouth of the fully prefabricated foundation 1 through the anchoring effect of the leveling device fixing anchor 8. The leveling device fixing plate 5 and the leveling device plate 6 are movably connected. By adjusting the leveling device plate 6, the leveling device plate 6 can fasten the upper steel column 2, thereby achieving temporary fastening. The synergistic effect of the horizontal leveling fastening device 4 and the vertical leveling fastening device 3 achieves multi-point contact fastening with the upper steel column 2, solving the problem of reliable and stable fastening of the steel column before grouting by relying solely on the single-point fastening of the vertical leveling fastening device 3. In addition, the horizontal leveling fastening device 4, as a temporary fastening device, can significantly reduce project costs due to its reusability. Although there is a certain initial investment, the reusable use can greatly reduce the actual cost of use and reduce resource waste, which is in line with the concept of green construction.

[0067] Preferably, the leveling device fixing plate 5 and the leveling device plate 6 are movably connected by a special pin 7. The ends of the leveling device fixing plate 5 and the leveling device plate 6 of the horizontal leveling fastening device 4 are welded with pin sleeves. The leveling device fixing plate 5 and the leveling device plate 6 are connected by the special pin 7 and the pin sleeve in series to realize the connection function of the leveling device fixing plate 5 and the leveling device plate 6.

[0068] Preferably, both the leveling device fixing plate 5 and the leveling device plate 6 are welded with connecting ear plates 15, and an adjustable special support rod 9 is movably connected between the connecting ear plates 15. The adjustable special support rod 9 is matched with an adjustable threaded sleeve 10. Through the movable connection between the adjustable special support rod 9 and the adjustable threaded sleeve 10, the leveling device fixing plate 5 and the leveling device plate 6 can be better realized to rotate freely around the special pin shaft 7.

[0069] Preferably, the ends of the adjustable special support rod 9 and the adjustable threaded sleeve 10 are provided with a cone head 11. The cone head 11 is provided with a sealing plate 12. The end of the sealing plate 12 is fixedly connected to a support rod connecting ear plate 19. Both the support plate connecting ear plate 19 and the connecting ear plate 15 are provided with ear plate connecting pin holes 18. The ear plate connecting pin holes 18 are matched with ear plate connecting pins 16. The support plate connecting ear plate 19 and the connecting ear plate 15 are fixed together by the ear plate connecting pins 16.

[0070] Example 2

[0071] To further ensure the stability of the upper steel column 2 before grouting in the cup cavity, the present invention also provides an adjustable clamp-type fastening device, which, together with the vertical leveling fastening device 3, forms a combined fastening system for the upper steel column 2 inserted into the cup cavity. It is easy to install and can be reused. After the grouting in the cup cavity has been cured to ensure a reliable connection between the steel column and the foundation, this adjustable fastening device can be removed.

[0072] The adjustable clamp-type fastening device consists of a leveling device fixing plate 5, an adjustable special support rod 9, a special pin 7, and anchor bolts 8 for fixing the leveling device. The adjustable special support rod 9 consists of a high-strength special screw, a support rod connecting lug, an adjustable threaded sleeve, a fastening nut, and a fastening screw. The free extension and tightening function of the support rod is achieved through the circumferential adjustment of the threaded sleeve. When the support rod is adjusted to the correct position, the fastening nut secures the threaded sleeve to the screw.

[0073] As a preferred option, to further enhance the balance and stability of the steel column's clamping force, at least four adjustable clamp-type fastening devices are required. These devices must reliably and securely connect to the foundation cup, ensuring no slippage occurs between the leveling device fixing plate 5 and the foundation cup throughout the entire clamping process. The foundation cup's fabrication process must fully consider the placement and location of the anchor bolts 8 used for fixing the leveling device. The leveling fastening device plate in contact with the cup must have vertically extending holes, 3-5 mm larger than the anchor bolt size, to facilitate horizontal adjustment of the device.

[0074] The leveling device fixing plate 5 of the adjustable clamp-type fastening device is welded to an adjustable threaded sleeve 10 for pin connection. The two leveling device plates 6 are connected in series by a special pin 7 and an adjustable threaded sleeve 10 to realize the function of fastening plate pin connection. It can better realize the function of fastening plate rotating freely around the pin. In order to facilitate the special pin to be fixed in the sleeve, the sleeve is sealed with pins on both sides.

[0075] The adjustable special support rod 9 and the leveling device plate 6 are connected by a fork-ear type, which can better realize the free rotation function of the adjustable special support rod 9 and the leveling device plate 6. The fork-ear type connection assembly consists of a support rod connecting special ear plate 19, a fastening plate connecting ear plate 15, and a special pin 7.

[0076] Example 3

[0077] The present invention relates to an insertable cup-shaped foundation with a steel column leveling device, comprising two parts: a vertical leveling and fastening device and a horizontal leveling and fastening device. The vertical leveling and fastening device is a permanent fastening device, in which the vertical leveling anchor rod is embedded in the foundation during the pouring of the cup-shaped foundation. Before the grouting of the cup-shaped foundation, it bears the entire self-weight of the steel column. After the grouting of the cup-shaped foundation, it becomes part of the outer column base of the steel column. Through the anchoring of the end plate and bolts, the strength of the anchor rod can be fully utilized, providing better bending bearing capacity for the outer column base, and also correspondingly reducing the calculated steel consumption of the longitudinal reinforcement on the outer side of the outer column base. The adjustable clamp-type fastening device is a temporary fastening device. It works in conjunction with the vertical leveling fastening device to achieve multi-point contact fastening with the steel column. This solves the problem of reliably and stably fastening the steel column with only a single point of the vertical leveling fastening device before grouting. In addition, as a temporary fastening device, its reusability can significantly reduce project costs. Although there is a certain initial investment, the reusability greatly reduces the actual cost of use and also reduces the waste of resources, which is in line with the concept of green construction.

[0078] The vertical leveling device 3 is mainly implemented through the following steps: The upper steel column 2 is inserted into the foundation socket. Leveling anchors and washers are pre-installed on the anchors 8 used for fixing the leveling device. The diameter of the anchors needs to be calculated based on the free length of the anchors and the weight of the steel column. The opening position of the circumferential node plate for fixing the steel column must be consistent with the anchor position, and the opening size must be 3-5mm larger than the anchor size. When the circumferential node of the steel column is placed on the leveling anchor washer, the verticality and vertical elevation of the steel column are controlled by adjusting the position of the vertical anchors. Local adjustments to the horizontal position of the steel column are made by adjusting the gap between the circumferential node plate and the anchor rod. After the above adjustments are completed, temporary fastening nuts 13 can be installed for temporary fixation.

[0079] The adjustable clamp-type device is fixed to the foundation cup by adjusting the fixing anchors. The fixing anchors are divided into four groups and are evenly and symmetrically arranged around the cup wall with the foundation as the center in four directions. Each group has no less than 4 anchors. The position of the fixing anchors at the foundation cup opening needs to take into account the specifications and dimensions of the clamp-type device. To ensure uniform stress on the anchor bolts, the anchor bolts should be evenly and symmetrically arranged around the special ear plate of the fork-type anchor connection. The adjustable special screw consists of an adjustable threaded sleeve 10, a support screw, a fastening nut 13, a fastening screw 14, a connecting ear plate 15, a cone head 11, and a sealing plate 12. The strength grade of the connecting ear plate 15, the cone head 11, and the sealing plate should not be lower than Q355, and the strength grade of the remaining parts should not be lower than 10.9. The thickness of the connecting ear plate 15, the cone head 11, and the sealing plate 12 can be determined by calculation according to design requirements, but should not be less than 6mm. The weld between the cone head 11 and the sealing plate 12 should not be less than the bearing capacity of the connecting ear plate. To ensure the welding quality of the connecting ear plate 15 and the sealing plate 12, the sealing plate... The outer diameter of the 12 connecting ear plate 15 should be 5-8mm larger than the size of the 15 connecting ear plate. The support screw should not be less than M16. The wall thickness of the adjustable threaded sleeve 10 should not be less than 5mm. The support rod connecting ear plate 19 adopts a double ear plate structure. The diameter of the reserved pin hole in the ear plate needs to be determined in conjunction with the pin size. The pin specification should not be less than M12. The fastening nut 13 mainly plays the following two roles: 1. Loosen the screw during telescopic adjustment so that the screw can rotate freely in the cone head for easy adjustment. 2. Tighten the cone head when the screw is adjusted to the correct position. Based on the above considerations, a gap of 1-3mm should be reserved between the fastening nut and the adjusting threaded sleeve. The fastening screw should be made of high-strength steel, and its diameter should not be less than 3mm. The fastening screw 14 can be M5-M10.

[0080] The leveling device plate 6 and the pin sleeve are fully welded together. The outer edge of the sleeve is flush with the leveling device plate 6. The inner diameter of the pin sleeve needs to be determined in conjunction with the pin size. The pin specification is not less than M16. The pin sleeve material strength can be equal to that of the leveling device plate, and Q355 grade is used. The two leveling device plates achieve the function of fixed axis rotation through the special pin and the tandem sleeve structure, so that the horizontal and vertical leveling of the steel column can be well achieved.

[0081] The adjustable clamp-type leveling device is mainly achieved through the following steps: After the vertical leveling device is adjusted to the correct position, the leveling device is installed at the corresponding positions on the four sides of the cup opening. The anchor bolts used to fix the device are used to temporarily fix the cup opening. The length of the support rod is adjusted until the horizontal position and verticality of the steel column are adjusted to the correct position. The support rod fastening bolts and the leveling device fixing bolts are tightened. After the above steps are completed, the steel column and the foundation are finally checked to ensure that they are firmly fixed.

[0082] Example 4

[0083] An installation method for an insert-type cup-shaped foundation with a matching steel column leveling device, the steps of which are as follows:

[0084] (1) After the prefabricated foundation 1 is installed, insert the upper steel column 2 into the cup of the prefabricated foundation, install the leveling nut of the vertical leveling device 3, and perform vertical leveling of the upper steel column 2. After vertical leveling, install the fastening nut 13 to perform preliminary fastening of the upper steel column 2.

[0085] (2) Install an adjustable clamp-type horizontal leveling and fastening device 4 on the upper part of the precast foundation cup. Before installation, check whether the leveling device plate 5 and leveling device plate 6 of the horizontal leveling and fastening device 4 are reliably connected to the special pin 7. Adjust the position of the leveling device plate 5 and fix the plate 5 to the foundation cup through the leveling device fixing anchor bolt 8. Check the appearance quality of the adjustable threaded sleeve 10, cone 11, sealing plate 12, fastening nut 13 and fastening screw 14 of the adjustable special support rod 9 and check whether the adjustable special support rod 9 can extend and retract freely and be reliably fastened. After the adjustable special support rod 9 is checked, connect the adjustable special support rod 9 to the leveling device fixing plate 5 and the leveling device plate 6 through the ear plate connecting pin 16.

[0086] (3) By continuously checking and adjusting the leveling nut of the vertical leveling fastening device 3 and the adjustable threaded sleeve 10 of the horizontal leveling fastening device 4, until the upper steel column 2 vertical leveling horizontal ring plate 17 is completely horizontal, the quality requirements of the verticality and plane coordinate position of the steel column are met.

[0087] (4) Finally, tighten the fastening nut of the vertical leveling fastening device 3 and install the anti-reverse nut. Tighten the fastening nut 13 of the adjustable threaded sleeve 10 and the fastening screw 14 until the upper 2 steel columns are completely and reliably fixed to the fully prefabricated foundation 1.

[0088] (5) Perform secondary pouring of precast foundation cup mouth concrete until the concrete strength inside the cup mouth reaches 50% of the design strength of the concrete (about 3 to 5 days), and remove the horizontal leveling and fastening device 4.

[0089] (6) Finally, the reinforcement of the outer column base is tied and the concrete is poured for the second time. The leveling device is completed as the steel column is installed.

Claims

1. An insertable cup-shaped foundation supporting steel column leveling device, characterized in that, It includes a vertical leveling and fastening device (3) and a horizontal leveling and fastening device (4) pre-embedded in the cup groove. The vertical leveling and fastening devices (3) are distributed at equal intervals around the upper steel column (2). The horizontal leveling and fastening devices (4) are installed on the upper part of the cup mouth of the fully prefabricated foundation (1) and distributed at both ends of the cup mouth. Several sets of vertical leveling devices (3) are connected by a vertical leveling horizontal ring plate (17). A through hole is provided at the center of the vertical leveling horizontal ring plate (17). The diameter of the through hole is adapted to the diameter of the upper steel column (2), which facilitates the connection of the upper steel column (2) while enhancing the support and fixing function.

2. The leveling device for the steel column of the insert-type cup-shaped foundation according to claim 1, characterized in that, The vertical leveling and fastening device (3) includes a leveling anchor (20), a matching leveling nut (22), a backstop nut (23), and a corresponding matching washer (24) built into the prefabricated foundation (1). The upper end of the leveling anchor (20) is provided with a thread near the port. The leveling nut (22) is engaged with the thread of the leveling anchor (20), so that the leveling nut (22) can be freely adjusted up and down along the leveling anchor (20).

3. The leveling device for the steel column of the insert-type cup-shaped foundation according to claim 2, characterized in that, The anti-reverse nut (23) is threaded to engage with the leveling anchor bolt (20). After the leveling nut (22) is adjusted to the correct position, the upper steel column (2) and the leveling anchor bolt (20) can be effectively fastened.

4. The leveling device for the steel column of the insert-type cup-shaped foundation according to claim 2, characterized in that, A matching washer (24) is also provided between the leveling nut (22) and the vertical leveling ring plate (17), and the size of the matching washer (24) exceeds 80mm×80mm.

5. The leveling device for the steel column of the insert-type cup-shaped foundation according to claim 1, characterized in that, The upper steel column (2) is fixed by a vertical leveling ring plate (17) with through holes on the upper and lower surfaces at the position of the corresponding vertical leveling fastening device (3). The size of the holes is 3-5 mm larger than the size of the leveling anchor bolt (20).

6. The leveling device for the inserted cup-shaped foundation supporting steel column according to claim 1, wherein The vertical leveling ring plate (17) and the upper steel column (2) are fully welded together in the factory, and the vertical leveling fastening device (3) forms a permanent fastening device by connecting the vertical leveling ring plate (17).

7. The leveling device for the steel column of the insert-type cup-shaped foundation according to claim 1, characterized in that, The horizontal leveling and fastening device (4) includes a leveling device fixing plate (5) and a leveling device plate (6). The leveling device fixing plate (5) has several sets of insertion holes, and each insertion hole is equipped with a corresponding leveling device fixing anchor (8). The leveling device fixing plate (5) is fixedly connected to the cup mouth of the prefabricated foundation (1) by the anchoring effect of the leveling device fixing anchor (8).

8. The leveling device for the steel column of the insert-type cup-shaped foundation according to claim 7, characterized in that, The leveling device fixing plate (5) and the leveling device plate (6) are movably connected by a special pin (7). The ends of the leveling device fixing plate (5) and the leveling device plate (6) of the horizontal leveling fastening device (4) are welded with pin sleeves. The leveling device fixing plate (5) and the leveling device plate (6) are connected by a special pin (7) and a pin sleeve.

9. The leveling device for the steel column of the insert-type cup-shaped foundation according to claim 7, characterized in that, Both the leveling device fixing plate (5) and the leveling device plate (6) are welded with connecting ear plates (15). An adjustable special support rod (9) is movably connected between the connecting ear plates (15). An adjustable threaded sleeve (10) is matched with the adjustable special support rod (9).

10. An installation method of the leveling device for the plug-in cup-shaped foundation supporting steel column as described in any one of claims 1 to 9, characterized in that, The steps are as follows: S1: After the prefabricated foundation (1) is installed, insert the upper steel column (2) into the cup of the prefabricated foundation, install the leveling nut of the vertical leveling device (3) to perform vertical leveling of the upper steel column (2), and install the fastening nut (13) after vertical leveling to perform preliminary fastening of the upper steel column (2). S2: Install an adjustable clamp-type leveling device (4) on the upper part of the precast foundation cup. Before installation, check whether the leveling device fixing plate (5) and leveling device plate (6) of the leveling device (4) are reliably connected with the special pin (7); adjust the position of the leveling device fixing plate (5) and fix the leveling device fixing plate (5) to the foundation cup through the leveling device fixing anchor (8); connect the adjustable special support rod (9) to the special connecting ear plate (15) of the leveling device fixing plate (5) and the leveling device plate (6) through the ear plate connecting pin (16); S3: By continuously checking and adjusting the leveling nut (22) of the vertical leveling fastening device (3) and the adjustable threaded sleeve (10) of the horizontal leveling device (4), until the vertical leveling horizontal ring plate (17) of the upper steel column (2) is completely horizontal, the quality requirements of the verticality and plane coordinate position of the steel column are met. S4: Finally, tighten the fastening nut (13) of the vertical leveling fastening device (3) and install the anti-reverse nut (23). Tighten the fastening nut (13) of the adjustable threaded sleeve (10) and the fastening screw (14) until the upper steel column (2) and the fully prefabricated foundation (1) are completely and reliably fixed. S5: Perform secondary pouring of precast foundation cup-mouth concrete until the concrete strength inside the cup-mouth reaches 50% of the design strength of the concrete, and remove the horizontal leveling and fastening device (4). S6: Finally, the reinforcement of the outer column base is tied and the concrete is poured a second time. The leveling device is completed along with the steel column installation.

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