Construction method for installing foundation and column foot of steel structure through sliding method

Abstract

The invention relates to the technical field of building construction, in particular to a construction method for installing a foundation and a column foot of a steel structure through a sliding method, and the construction method comprises the steps that S1, a foundation short column is poured at a time, and the upper side of the foundation short column serves as a primary pouring face; s2, a sliding rail is installed on the primary pouring face; s3, the steel column foot is connected with a sliding device, and then the steel column foot and the sliding device are integrally installed on a sliding rail; the sliding device is used for transferring the steel column foot to a preset foundation short column position along the sliding track; s4, the sliding device and the sliding rail are removed, and then the steel column foot and a primary pouring face are connected and positioned; s5, secondary pouring is conducted between the steel column foot and the foundation short column; by designing the foundation short column in the form of primary pouring and secondary pouring, enough erection space for the sliding track can be provided during primary pouring, and the problems that sliding method construction is difficult to implement due to narrow space after integral pouring, and the construction difficulty and cost are increased are avoided.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a construction method for the foundation and column feet of a steel structure installed by the sliding method. Background Technology

[0002] For large-span steel structures where each segment has a basically identical structural form and can be modularly pre-assembled, the sliding method is a frequently used construction method. The advantages of the sliding method are particularly significant when installing such structures in limited construction sites. During sliding construction, the key is to install sliding tracks in appropriate locations for the steel columns. Different structural or foundation types directly affect the construction method of the sliding tracks and the subsequent efficiency of steel structure installation. In engineering practice, foundation design and sliding construction often require close coordination.

[0003] When there are isolated foundation short columns without a continuous foundation beam, or when the top of the foundation short column has pre-embedded bolts or reserved reinforcing bars, it is not possible to directly erect a sliding track on top of the foundation short column. Typically, a temporary sliding track beam and its supporting structure need to be set up separately, or a separate sliding track foundation needs to be constructed. In such cases, construction in confined spaces presents challenges such as increased construction difficulty, higher costs, and longer construction periods, thus diminishing the advantages of the sliding method. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a construction method for the foundation and column feet of steel structures installed by the sliding method, which solves the problem that the sliding track is difficult to assemble in the narrow space when using the sliding method due to interference at the top of the short foundation column.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a construction method for the foundation and column feet of a steel structure installed by the sliding method, comprising the following steps: S1. The foundation short column is poured in one go, and the upper side of the foundation short column is used as the pouring surface. S2. Install a sliding track on the primary pouring surface; S3. Connect the steel column base to the sliding device, and then install the whole assembly onto the sliding track; the sliding device moves the steel column base along the sliding track to the predetermined foundation short column position; S4. Remove the sliding device and sliding track, and then connect and position the steel column base to the primary pouring surface; S5. Secondary pouring is carried out between the steel column base and the foundation short column.

[0006] The beneficial effects of this invention are as follows: by designing the foundation short column in the form of one-time and two-time pouring, sufficient space for the installation of the sliding track can be provided during the one-time pouring, avoiding the difficulty of implementing the sliding method due to the narrow space after the overall pouring, which increases the construction difficulty and cost; on this basis, the steel column base can be quickly transferred to the foundation short column for pouring operation by the sliding method; during the two-time pouring, the sliding device and sliding track are removed to ensure that there is sufficient pouring space between the steel column base and the foundation short column. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the construction method for the foundation and column base of a steel structure for installation by sliding, as described in a specific embodiment of the present invention, in which the column base of the steel column is transferred to the short column of the foundation by a sliding device. Figure 2 This is a schematic diagram of the construction method for installing steel structures using the sliding method, specifically according to an embodiment of the present invention, showing the sliding track assembled on the foundation short column. Figure 3 This is a schematic diagram of the steel column base assembled on the sliding device in the construction method for the foundation and column base of a steel structure for installation by the sliding method, which is a specific embodiment of the present invention. Figure 4 This is a schematic diagram of the structure after secondary pouring of the construction method for the foundation and column feet of the steel structure installed by the sliding method according to a specific embodiment of the present invention. Figure 5 for Figure 4 Sectional view at point AA; Figure 6 This is a schematic diagram of the structure after secondary pouring following the cutting of vertical reinforcing bars in the construction method of the foundation and column feet for the sliding installation of steel structures, which is a specific embodiment of the present invention. Label Explanation: 11. Steel column base; 12. Column base plate; 13. Shear key; 21. Upper anchor bolt; 22. Lower anchor bolt; 23. Threaded sleeve; 24. Nut; 25. Leveling nut; 31. Track beam; 32. Fixing block; 321. Socket; 322. Fixing steel plate; 41. Sliding device; 411. Connecting steel plate; 51. Foundation short column; 52. Secondary pouring layer; 53. Vertical reinforcement; 531. Reinforcing bar threaded sleeve; 54. Outer stirrup; 55. Inner stirrup. Detailed Implementation

[0008] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0009] Please refer to Figures 1 to 6A construction method for foundations and column bases of steel structures using the sliding method includes the following steps: S1. The foundation short column 51 is poured in one go, and the upper side of the foundation short column 51 is used as the primary pouring surface; S2. Install a sliding track on the primary pouring surface; S3. Connect the steel column base 11 to the sliding device 41, and then install the whole assembly onto the sliding track; the sliding device 41 moves the steel column base 11 along the sliding track to the predetermined position of the foundation short column 51; S4. Remove the sliding device 41 and the sliding track, and then connect and position the steel column base 11 to the primary pouring surface. S5. Secondary pouring is carried out between the steel column base 11 and the foundation short column 51.

[0010] As can be seen from the above description, the beneficial effects of the present invention are as follows: by designing the foundation short column 51 in the form of one-time pouring and two-time pouring, sufficient space for the installation of the sliding track can be provided during the one-time pouring, avoiding the difficulty of implementing the sliding method construction due to the narrow space after the overall pouring, thus increasing the construction difficulty and cost; on this basis, the steel column base 11 can be quickly transferred to the foundation short column 51 for pouring operation through the sliding method construction; during the two-time pouring, the sliding device 41 and the sliding track are removed to ensure that there is sufficient pouring space between the steel column base 11 and the foundation short column 51.

[0011] Furthermore, the specific operation of "one-time pouring of foundation short column 51" in step S1 includes: pre-embedding anchor bolts in foundation short column 51, the anchor bolts being divided into upper anchor bolt 21 and lower anchor bolt 22; during one-time pouring, the lower anchor bolt 22 is located within the one-time pouring area of ​​foundation short column 51; after one-time pouring, the lower anchor bolt 22 protrudes from the one-time pouring surface; The specific operation of "installing the sliding rail on the primary pouring surface" in step S2 includes: the sliding rail being positioned and connected to the lower anchor bolt 22.

[0012] As described above, the lower section anchor bolts 22, which protrude from the primary pouring surface and are pre-embedded in the foundation short column 51, can serve as the base for positioning the sliding track and are used in conjunction with the sliding track for positioning and installation. By dividing the anchor bolts to use the pre-embedded steel columns to fix the sliding track with anchor bolts, no additional fixing mechanism is required, making installation and disassembly convenient.

[0013] Furthermore, the specific operation of "positioning and connecting the sliding track with the lower anchor bolt 22" in step S2 includes: Fixing steel plates 322 with U-shaped openings are provided on both sides of the sliding track. The openings of the fixing steel plates 322 are then slid into the lower anchor bolts 22 for positioning and assembly. The orientation of the U-shaped openings of the fixing steel plates 322 is consistent with the direction of the object sliding on the sliding track toward the primary pouring surface.

[0014] As described above, the U-shaped opening of the fixed steel plate 322, in conjunction with the lower anchor bolt 22, enables the positioning and assembly of the sliding track and the foundation short column 51. Simultaneously, the orientation of the U-shaped opening of the fixed steel plate 322 is carefully designed to prevent objects on the sliding track, such as the steel column foot 11, from affecting the fixing structure of the fixed steel plate 322 when they slide. If the orientation of the U-shaped opening of the fixed steel plate 322 is opposite to the direction in which the object on the sliding track slides towards the primary pouring surface, a thrust in the sliding direction, such as when the steel column foot 11 slides in, due to friction, may push the fixed steel plate 322 and the sliding track. In this case, the lower anchor bolt 22 will be unable to prevent this displacement.

[0015] Furthermore, the specific operation of "positioning and connecting the sliding track with the lower anchor bolt 22" in step S2 also includes: After the fixed steel plate 322 is positioned and engaged with the lower anchor bolt 22, the threaded sleeve 23 is locked into the lower anchor bolt 22. The threaded sleeve 23 presses the fixed steel plate 322, thereby fixing the sliding track and the foundation short column 51.

[0016] As described above, the threaded sleeve 23 is locked to the lower anchor bolt 22 to connect the lower anchor thread and press against the fixing steel plate 322 fixed to the lower anchor bolt 22, thereby fixing the slide rail track and the foundation short column 51.

[0017] Furthermore, step S2 also includes the assembly operation of the sliding track: the sliding track includes a fixing block 32 with a socket 321 at both ends and a track beam 31. The fixing block 32 is first connected to the primary pouring surface, and then the socket 321 of the fixing block 32 is inserted into the track beam 31 to extend the sliding track; the socket connection is used to realize the continuous extension of the sliding track, the force transmission is direct and reliable, and the track beam 31 and the fixing block 32 are simple and convenient to install and disassemble.

[0018] As described above, the sliding track adopts an assembly method. The fixing block 32 is pre-fixed, and then the connectors 321 at both ends of the fixing block 32 are plugged into the track beam 31 for assembly, thereby extending the sliding track to meet the distance requirements for the transfer of the steel column base 11.

[0019] Furthermore, the specific operation of "connecting the steel column base 11 to the sliding device 41" in step S3 includes: setting a connecting steel plate 411 on the upper side of the sliding device 41, locking the upper section anchor bolt 21 into the column base plate 12 of the steel column base 11, and locking and fixing the upper section anchor bolt 21 to the connecting steel plate 411 during assembly.

[0020] As can be seen from the above description, the connecting steel plate 411 serves as the load-bearing structure of the steel column base 11 and is fixedly connected to it by the upper section anchor bolts 21 locked into the steel column base 11.

[0021] Furthermore, the specific operation of "secondary casting between the steel column base 11 and the foundation short column 51" in step S5 includes: arranging U-shaped interlocking stirrups between the steel column base 11 and the foundation short column 51, wherein the U-shaped interlocking stirrups include outer stirrups 54 and inner stirrups 55. During the casting of the foundation short column 51 in step S1, multiple vertical reinforcing bars 53 are pre-embedded and surrounded inside the foundation short column 51. The interlocking outer stirrups 54 abut against the outer sides of the vertical reinforcing bars 53, and the outer stirrups 54 overlap and are welded to form a closed structure. The interlocking inner stirrups 55 are arranged in a cross shape at the middle of the outer stirrups 54 and at the middle of the interlocking positions of the outer stirrups 54, abutting against the vertical reinforcing bars 53. The inner stirrups 55 overlap and are welded to form a closed structure.

[0022] As can be seen from the above description, the structural strength after secondary pouring can be enhanced by the abutment and welding of the outer hoop 54 and the inner hoop 55 with the vertical steel bars 53 in the foundation short column 51.

[0023] Furthermore, the specific operation of "connecting and positioning the steel column base 11 with the primary pouring surface" in step S4 includes: screwing the upper section anchor bolt 21 of the steel column base 11 downward and connecting the upper section anchor bolt 21 and the lower section anchor bolt 22 through the threaded sleeve 23.

[0024] As described above, the upper anchor bolt 21 and the lower anchor bolt 22 are connected by the threaded sleeve 23, so as to realize the integral connection of the upper and lower anchor bolts 22 and fix the steel column base 11 and the foundation short column 51.

[0025] Furthermore, step S4 also includes the connection operation of shear keys 13: after removing the sliding device 41 and the sliding track, symmetrical shear keys 13 are welded to the bottom surface of the column base plate 12 of the steel column base 11.

[0026] As can be seen from the above description, when the column base plate 12 of the steel column base 11 is subjected to a large horizontal force, shear keys 13 need to be set. After the steel column base 11 slides to the position of the predetermined foundation short column 51, the interfering sliding track and sliding device 41 are removed, and shear keys 13 are welded on the bottom surface of the column base plate 12 from both sides, and then the subsequent construction is carried out.

[0027] Furthermore, when the pre-embedded vertical reinforcing bars 53 affecting the installation of the sliding track are caused by the increased load of the steel plate column foot of the foundation short column 51, the vertical reinforcing bars 53 are divided into upper and lower sections, and then the threaded sleeves 531 are locked into the lower section of the reinforcing bars; then in step S1, when pouring the foundation short column 51, ensure that the top surface of the threaded sleeves 531 is flush with the primary pouring surface; in step S4, after removing the sliding track and sliding device 41, the upper section of the reinforcing bars is screwed into the threaded sleeves 531 of the lower section of the reinforcing bars to form an integral vertical reinforcing bar 53.

[0028] As described above, when the load on the steel column base 11 is large and the reinforcement of the foundation short column 51 is large, a vertical steel bar 53 needs to be configured at the central axis position of the foundation short column 51. However, the vertical steel bar 53 interferes with the arrangement of the sliding track and sliding device 41. Therefore, by using the above-mentioned cutting method, the lower section of the steel bar is retained in the foundation short column 51 to avoid affecting the installation of the sliding track and sliding device 41. During the secondary pouring, the upper section of the steel bar is connected to the lower section of the steel bar to ensure the structural strength. The design of steel bar extension by using the above-mentioned pre-embedded vertical steel bar 53 and matching steel bar threaded sleeve 531 can flexibly adapt to the pouring of foundation short columns 51 with various reinforcement forms.

[0029] Example 1 like Figures 1 to 6 As shown, a construction method for the foundation and column feet of a steel structure using the sliding method includes the following steps: S1. The foundation short column 51 is cast in one pour. Anchor bolts and multiple vertical reinforcing bars 53 are pre-embedded in the foundation short column 51, with the vertical reinforcing bars 53 embedded along their entire length to the design elevation at the top of the foundation short column 51. The stirrups of the foundation short column 51 are first set at the predetermined position of the primary pouring surface from bottom to top. The anchor bolts are divided into upper anchor bolts 21 and lower anchor bolts 22. During primary pouring, the lower anchor bolts 22 are located within the primary pouring area of ​​the foundation short column 51. After primary pouring, the lower anchor bolts 22 protrude from the primary pouring surface. The upper side of the foundation short column 51 serves as the primary pouring surface.

[0030] S2. Install a sliding track on the primary pouring surface, such as... Figure 2As shown, the sliding track includes a fixing block 32 with sockets 321 at both ends and a track beam 31. The fixing block 32 has U-shaped openings on both sides of a fixing steel plate 322. The fixing block 32 is positioned at the central axis of the foundation short column 51. Then, the fixing steel plate 322 is slid in with its opening facing the lower anchor bolt 22 for positioning and assembly. After the fixing steel plate 322 and the lower anchor bolt 22 are positioned and engaged, a threaded sleeve 23 is locked into the lower anchor bolt 22. The threaded sleeve 23 presses against the fixing steel plate 322, thus fixing the fixing block 32 and the foundation short column 51. The U-shaped opening of the fixing steel plate 322 faces the same direction as the object sliding on the sliding track towards the primary pouring surface. Finally, the sliding track is assembled by connecting the sockets 321 of the fixing block 32 to the track beam 31 to extend the sliding track. The track beam 31 is a rectangular cross-section steel pipe.

[0031] S3, such as Figure 3 As shown, the steel column base 11 is connected to the sliding device 41. A connecting steel plate 411 is provided on the upper side of the sliding device 41. Nuts 24 are fitted on the base plate 12 of the steel column base 11 to lock the upper anchor bolt 21. The base plate 12 and the connecting steel plate 411 are in contact. The upper anchor bolt 21 passes through the connecting steel plate 411. A leveling nut 25 is locked into the lower side of the connecting steel plate 411 at the upper anchor bolt 21. At the same time, the nuts 24 on the base plate 12 and the leveling nut 25 on the connecting steel plate 411 are tightened to fix the sliding device 41 to the steel column base 11. Figure 1 As shown, the entire structure is then installed onto the sliding track. The sliding device 41 moves the steel column base 11 along the sliding track to the predetermined position of the foundation short column 51, so that the upper section anchor bolt 21 on the steel column base 11 is aligned with the lower section anchor bolt 22 on the foundation short column 51.

[0032] S4. Jacks are installed on both sides of the short side of the column base plate 12. The column base plate 12 is subjected to force simultaneously and evenly on both sides, so that the column base plate 12 is raised by 5mm. Then, the leveling nut 25 is removed, and the sliding device 41 is slid out of the upper side of the foundation short column 51 along the sliding track. Then, the threaded sleeve 23 on the lower section anchor bolt 22 is screwed in, and the fixed steel plate 322 is pushed in the opposite direction to disengage it from the lower section anchor bolt 22. Then, the track beam 31 and the fixed pressure block 32 can be pulled out from the upper side of the foundation short column 51 in sequence.

[0033] Afterwards, the jack is lowered back to its original position, and the leveling nut 25 is installed at the upper anchor bolt 21. Then, the steel column base 11 is connected and positioned to the primary pouring surface. The threaded sleeve 23 on the lower anchor bolt 22 is screwed upwards, and the upper anchor bolt 21 is screwed downwards, so that the threaded sections of the upper and lower anchor bolts are each inserted half the length of the threaded sleeve 23, connecting the upper and lower anchor bolts into one unit through the threaded sleeve 23. Then, the leveling nut 25 is finely adjusted to accurately position the column base plate 12 and the nut 24 on the column base plate 12 is locked.

[0034] Several steel shims are inserted at the four corners below the column base plate 12 and tightened against the column base plate 12, and then the jacks are removed. At this time, the steel column base 11 is supported on the foundation short column 51 by the anchor bolts and the steel shims at the four corners of the column base plate 12, so as to enhance the stability of the steel column base 11 during construction.

[0035] S5, such as Figure 4 As shown, secondary pouring is carried out between the steel column base 11 and the foundation short column 51. Figure 5 As shown, before the secondary pouring, U-shaped interlocking stirrups are arranged between the steel column base 11 and the foundation short column 51, wherein the U-shaped interlocking stirrups include outer stirrups 54 and inner stirrups 55. The interlocking outer stirrups 54 abut against the outer side of the vertical reinforcing bars 53, and the outer stirrups 54 overlap and are welded to form a closed structure, with an overlap dimension of 10d (d is the diameter of the reinforcing bar). The interlocking inner stirrups 55 are arranged in a cross shape in the middle of the outer stirrups 54 and in the middle of the interlocking position of the outer stirrups 54, abut against the vertical reinforcing bars 53, and the inner stirrups 55 overlap and are welded to form a closed structure, with an overlap dimension of not less than 35d.

[0036] Afterwards, the primary pouring surface of the foundation short column 51 is roughened, cleaned, and moistened. The outer side is supported by formwork. The space between the primary pouring surface of the foundation short column 51 and the column base plate 12 is filled with a secondary grout with good fluidity and high strength to form a secondary pouring layer 52.

[0037] Example 2 The difference between this embodiment and Embodiment 1 is that: like Figure 4 As shown, when the base plate 12 of the steel column base 11 is subjected to a large horizontal force, shear keys 13 need to be installed. After the steel column base 11 slides to the position of the predetermined foundation short column 51, the interfering sliding track and sliding device 41 are removed, and shear keys 13 are welded to the bottom surface of the base plate 12 from both sides. Specifically, the installation position of the shear keys 13 corresponds to the flange position of the steel column base 11 before subsequent construction.

[0038] Example 3 The difference between this embodiment and Embodiment 1 is that: like Figure 6 As shown, when the pre-embedded vertical reinforcing bars 53 affecting the installation of the sliding track are caused by the increased load on the steel plate column foot of the foundation short column 51, the vertical reinforcing bars 53 are cut into upper and lower sections. The ends of the upper and lower sections are then threaded, and a threaded sleeve 531 is inserted into the lower section. In step S1, when pouring the foundation short column 51, ensure that the top surface of the threaded sleeve 531 is flush with the primary pouring surface to facilitate subsequent installation of the sliding track or jacking operations. A plastic plug is screwed into the top of the threaded sleeve 531 of the lower section to prevent blockage. In step S4, remove the sliding track and sliding device 41. After the steel column foot 11 is fixed to the foundation short column 51, unscrew the plastic plug from the threaded sleeve 531 of the lower section. Twist the upper section of the reinforcing bar to the threaded sleeve 531 of the lower section to form a single vertical reinforcing bar 53, and then perform a secondary pouring operation.

[0039] In summary, the construction method for the foundation and column feet of steel structures using the sliding method provided by this invention, through a design involving single and secondary pouring on the foundation short column, provides sufficient space for the installation of the sliding track during the single pouring, avoiding the difficulty of implementing the sliding method due to narrow space after the overall pouring, thus increasing construction difficulty and cost. Furthermore, the sliding method allows for the rapid transfer of the steel column foot to the foundation short column for pouring operations. During the secondary pouring, the sliding device and sliding track are removed to ensure sufficient pouring space between the steel column foot and the foundation short column.

[0040] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention's specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A construction method for foundations and column feet of steel structures using the sliding method, characterized in that, Includes the following steps: S1. The foundation short column is poured in one go, and the upper side of the foundation short column is used as the pouring surface. S2. Install a sliding track on the primary pouring surface; S3. Connect the steel column base to the sliding device, and then install the whole assembly onto the sliding track; the sliding device moves the steel column base along the sliding track to the predetermined foundation short column position; S4. Remove the sliding device and sliding track, and then connect and position the steel column base to the primary pouring surface; S5. Secondary pouring is carried out between the steel column base and the foundation short column.

2. The construction method for foundations and column feet of steel structures using the sliding method according to claim 1, characterized in that, The specific operation of "one-time casting of foundation short column" in step S1 includes: pre-embedding anchor bolts in the foundation short column, the anchor bolts being divided into upper anchor bolts and lower anchor bolts; during one-time casting, the lower anchor bolts are located in the one-time casting area of ​​the foundation short column; after one-time casting, the lower anchor bolts protrude from the one-time casting surface. The specific operation of "installing the sliding rail on the primary pouring surface" in step S2 includes: the sliding rail being positioned and connected to the lower section anchor bolts.

3. The construction method for foundations and column feet of steel structures using the sliding method according to claim 2, characterized in that, The specific operation of "positioning and connecting the sliding track to the lower anchor bolt" in step S2 includes: Fixing steel plates with U-shaped openings are installed on both sides of the sliding track. The openings of the fixing steel plates are then slid into the lower anchor bolts for positioning and assembly. The orientation of the U-shaped openings of the fixing steel plates is consistent with the direction of the object sliding on the sliding track toward the primary pouring surface.

4. The construction method for foundations and column feet of steel structures using the sliding method according to claim 3, characterized in that, The specific operation of "positioning and connecting the sliding track to the lower anchor bolt" in step S2 also includes: After the fixed steel plate is positioned and engaged with the lower section anchor bolt, a threaded sleeve is locked into the lower section anchor bolt. The threaded sleeve presses the fixed steel plate, thereby fixing the sliding track and the foundation short column.

5. The construction method for foundations and column feet of steel structures using the sliding method according to claim 1, characterized in that, Step S2 also includes the assembly of the sliding track: the sliding track includes a fixed pressure block with a socket at both ends and a track beam. The fixed pressure block is first connected to the primary pouring surface, and then the socket of the fixed pressure block is inserted into the track beam to extend the sliding track.

6. The construction method for foundations and column feet of steel structures using the sliding method according to claim 2, characterized in that, The specific operation of "connecting the steel column base to the sliding device" in step S3 includes: setting a connecting steel plate on the upper side of the sliding device, locking the upper section anchor bolts into the base plate of the steel column base, and locking and fixing the upper section anchor bolts to the connecting steel plate during assembly.

7. The construction method for foundations and column feet of steel structures using the sliding method according to claim 1, characterized in that, The specific operation of "secondary casting between the steel column base and the foundation short column" in step S5 includes: arranging U-shaped interlocking stirrups between the steel column base and the foundation short column, wherein the U-shaped interlocking stirrups include outer and inner stirrups; during the casting of the foundation short column in step S1, multiple vertical reinforcing bars are pre-embedded and surrounded inside the foundation short column, the interlocking outer stirrups abut against the outer side of the vertical reinforcing bars, the outer stirrups overlap and are welded to form a closed structure, while the interlocking inner stirrups are arranged in a cross shape in the middle of the outer stirrups and the middle of the interlocking position of the outer stirrups, abutting against the vertical reinforcing bars, the inner stirrups overlap and are welded to form a closed structure.

8. The construction method for foundations and column feet of steel structures using the sliding method according to claim 2, characterized in that, The specific operation of "connecting and positioning the steel column base with the primary pouring surface" in step S4 includes: screwing the upper section anchor bolt of the steel column base downward and connecting the upper section anchor bolt and the lower section anchor bolt through a threaded sleeve.

9. The construction method for foundations and column feet of steel structures using the sliding method according to claim 1, characterized in that, Step S4 also includes a shear key connection operation: after removing the sliding device and sliding track, symmetrical shear keys are welded to the bottom surface of the column base plate of the steel column foot.

10. The construction method for foundations and column feet of steel structures using the sliding method according to claim 1, characterized in that, When the pre-embedded vertical reinforcing bars of the foundation short column affect the installation of the sliding track due to the increased load of the steel plate column foot, the vertical reinforcing bars are cut into upper and lower sections, and then a threaded sleeve is locked into the lower section of the reinforcing bar; then in step S1, when pouring the foundation short column, ensure that the top surface of the threaded sleeve is flush with the primary pouring surface; in step S4, after removing the sliding track and sliding device, the upper section of the reinforcing bar is screwed to the threaded sleeve of the lower section of the reinforcing bar to form an integral vertical reinforcing bar.

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