A butt joint installation construction method of a large-diameter steel pipe column

Abstract

The application discloses a large-diameter steel pipe column butt joint installation construction method, a plurality of horizontal range finders uniformly arranged on a positioning tool can quickly make the center axis of the positioning tool consistent with the center axis of a large-diameter steel pipe column, cooperating with a positioning nut arranged on an adjusting positioning bolt can make the levelness of the positioning tool meet the requirements, so that the preliminary positioning of the positioning nut relative to the lower end steel pipe column is realized, the initial butt joint precision of the upper end steel pipe column is ensured, and the butt joint efficiency is improved; positioning adjusting plates are arranged between upper and lower steel pipe column corbels, the center axis and the levelness of the upper end steel pipe column after the initial butt joint are finely adjusted through horizontal adjusting bolts and vertical adjusting bolts, the final butt joint precision can be ensured, and the construction quality is guaranteed; the positioning bolt, the positioning nut, the fastening nut, the lower end corbel and the upper end corbel of the steel pipe column are cooperated, the upper end steel pipe column after the fine adjustment is fixed with the lower end steel pipe column, the spliced steel pipe column is stably connected, and subsequent welding work is facilitated.

Description

Technical Field

[0001] This invention relates to the field of steel structure construction technology in building engineering, and in particular to a method for butt joint installation of large-diameter steel pipe columns. Background Technology

[0002] With the promotion and development of steel structure construction technology, the application scope of steel structures is becoming wider and wider. In addition to ordinary industrial plants, infrastructure, bridges, exhibition halls, stadiums and many other aspects, steel structures are also increasingly used in super high-rise buildings and large public buildings.

[0003] Industrial plant projects and similar projects often involve steel structures, with some designs using steel pipe columns as load-bearing columns. These steel pipe columns are typically characterized by large diameters, high individual column heights, and high installation precision requirements. Installation typically involves overall hoisting and on-site welding. Current technology usually uses positioning plates to fix the steel pipe columns before welding, which cannot allow for fine-tuning of the spacing between the columns. Deviations in the positioning and welding quality of large-diameter steel pipe columns during installation often occur, potentially preventing the installation of steel beams and other structures, and posing potential structural hazards. Summary of the Invention

[0004] The technical problem this invention aims to solve is to provide a construction method for butt-joint installation of large-diameter steel pipe columns, addressing the shortcomings of existing technologies. This method not only enables the butt-joint positioning of large-diameter steel pipe columns but also allows for fine-tuning of the spacing between the positioned steel pipe columns to improve positioning and installation accuracy. Furthermore, the installation is convenient and quick, and the positioning tools are reusable. The butt-joint installation method for large-diameter steel pipe columns provided in this application adopts the following technical solution:

[0005] A method for butt-fitting installation of large-diameter steel pipe columns, used for butt-fitting installation of lower and upper steel pipe columns, includes the following steps:

[0006] Step S1: Based on the diameter of the lower and upper steel pipe columns, pre-determine the positioning fixture, and evenly alternately open multiple through holes and threaded holes on the positioning fixture.

[0007] Step S2: Install multiple lower brackets and upper brackets evenly on the top outer wall of the lower steel pipe column and the bottom outer wall of the upper steel pipe column, respectively. The number and position of the lower brackets and upper brackets correspond to the first through hole. The middle of the lower brackets and upper brackets are provided with a second through hole with the same inner diameter as the first through hole.

[0008] Step S3: Use positioning bolts to pass through the through hole one on the positioning fixture and the corresponding through hole two on the lower bracket respectively. Use fastening nuts one and two to fix the positioning bolts to the lower bracket initially. Use the positioning nuts on the positioning bolts to support the positioning fixture on the top of the lower steel pipe column.

[0009] Step S4: Adjust the support height of each positioning nut to make the level of the positioning fixture meet the preset requirements, then adjust the center positioning component to align the positioning fixture with the center axis of the lower steel pipe column, and tighten the fastening nut one and fastening nut two to completely fix the positioning bolt to the lower bracket, so as to perform the initial positioning of the positioning nut.

[0010] Step S5: After removing the positioning fixture, hoist the upper steel pipe column so that the upper bracket of the upper steel pipe column passes through the corresponding positioning bolt and contacts the positioning nut.

[0011] Step S6: Install a positioning adjustment device between the upper bracket and the corresponding lower bracket. Adjust the positioning adjustment device to accurately position the upper steel pipe column. Then, use the fastening nut three to cooperate with the positioning nut to completely fix the positioning bolt to the upper bracket.

[0012] Step S7: After precise positioning is completed, weld the interface between the upper and lower steel pipe columns.

[0013] Step S8: After welding is completed, remove the lower bracket, upper bracket, positioning bolts, and positioning adjustment device.

[0014] Furthermore, the inner diameters of the first and second through holes are slightly larger than the diameter of the positioning bolt, and the inner diameters of the first, second, and third fastening nuts are adapted to the diameter of the positioning bolt.

[0015] Furthermore, the central positioning component includes a plurality of horizontal rangefinders evenly arranged along the circumference of the positioning fixture. The upper end of the horizontal rangefinder is fixedly connected to the positioning fixture through a horizontal rangefinder fixing bolt passing through a threaded hole in the positioning fixture, and the lower end is in contact with the side wall of the lower steel pipe column through a horizontal rangefinder adjusting bolt 7 to adjust the distance between the horizontal rangefinder and the side wall of the lower steel pipe column.

[0016] Further, in step S4, aligning the positioning fixture with the central axis of the lower steel pipe column includes the following steps: by adjusting the adjusting bolts 7 of the horizontal distance measuring instrument, the distance from each horizontal distance measuring instrument to the side wall of the lower steel pipe column is equal, thereby aligning the central axis of the positioning fixture with the central axis of the lower steel pipe column.

[0017] Furthermore, the positioning adjustment device includes a positioning adjustment plate, and horizontal adjustment bolts and vertical adjustment bolts disposed on the positioning adjustment plate.

[0018] Furthermore, the positioning adjustment plate is installed between the upper bracket and the corresponding lower bracket, and is symmetrically arranged on both sides of the corresponding adjustment bolt. The positioning adjustment plate is composed of a horizontal plate and a vertical plate that are perpendicular to each other. The horizontal plate is fixedly connected to the bottom of the upper bracket, and the vertical plate is arranged at the end of the horizontal plate away from the positioning bolt.

[0019] Furthermore, the horizontal adjusting bolt passes through the vertical plate of the positioning adjusting plate and abuts against the top side of the lower bracket; the vertical adjusting bolt vertically penetrates the top surface of the lower bracket and the horizontal plate of the positioning adjusting plate, and abuts against the bottom of the upper bracket.

[0020] Further, in step S6, the precise positioning of the upper steel pipe column includes the following steps: adjusting the horizontal adjusting bolt to align the central axis of the upper steel pipe column with the central axis of the lower steel pipe column; adjusting the vertical adjusting bolt to ensure that the levelness of the upper steel pipe column meets the preset requirements.

[0021] Furthermore, the first and second fastening nuts are located at the bottom and top of the lower bracket connection end face, respectively, and the positioning bolt is fixedly connected to the lower bracket by tightening the first and second fastening nuts; the positioning nut and the third fastening nut are located at the bottom and top of the upper bracket connection end face, respectively, and the positioning bolt is fixedly connected to the upper bracket by tightening the third fastening nut and the positioning nut.

[0022] Furthermore, the positioning fixture uses laser automatic cutting for blanking, and the horizontality of the upper and lower surfaces meets the preset accuracy requirements.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. This invention enables rapid positioning of large-diameter steel pipe columns through the cooperation of positioning fixtures, positioning bolts, lower brackets, and upper brackets. Multiple horizontal rangefinders evenly arranged on the positioning fixture quickly align the central axis of the positioning fixture with the central axis of the large-diameter steel pipe column. Adjusting the positioning nut on the positioning bolt ensures the positioning fixture meets horizontal requirements, achieving initial positioning of the positioning nut relative to the lower steel pipe column, ensuring initial docking accuracy of the upper steel pipe column, and improving docking efficiency.

[0025] 2. This invention ensures final connection accuracy and guarantees construction quality by setting a positioning adjustment plate between the upper and lower steel pipe column brackets and fine-tuning the center axis and levelness of the upper steel pipe column after initial connection using horizontal and vertical adjustment bolts.

[0026] 3. The present invention uses positioning bolts, positioning nuts, and fastening nuts to cooperate with the lower and upper brackets of the steel pipe column to fix the upper and lower steel pipe columns after fine adjustment, so that the spliced ​​steel pipe columns are stably connected and facilitate subsequent welding work.

[0027] 4. The positioning fixture, positioning bolts, lower bracket and upper bracket of the present invention can all be prefabricated in advance, and the steel pipe column can be disassembled and reused after welding. It is highly practical and economical. Through precise cutting, automatic welding and accurate positioning, it can be mass-produced, realize the simultaneous installation and adjustment of multiple steel columns, the installation progress is fast, the fine adjustment is simple and quick, and the accuracy deviation is small. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the positioning tooling device of the present invention;

[0029] Figure 2 This is a schematic diagram of the positioning tooling device of the present invention installed on the lower steel pipe column;

[0030] Figure 3 This is a schematic diagram of the structure of the positioning fixture device of the present invention with a horizontal distance measuring instrument installed on it;

[0031] Figure 4 This is a schematic diagram of the upper steel pipe column installation structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure for fine-tuning and fixing the upper steel pipe column of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the adjustment module of the present invention;

[0034] Reference numerals in the attached diagram: 1-Positioning fixture; 2-Lower steel pipe column; 3-Lower bracket; 4-Positioning bolt; 5-Positioning nut; 6-Horizontal rangefinder; 7-Horizontal rangefinder adjusting bolt; 8-Horizontal rangefinder fixing bolt; 9-Upper steel pipe column; 10-Upper bracket; 11-Positioning adjusting plate; 12-Positioning adjusting plate bolt; 13-Horizontal plate; 14-Vertical plate; 15-Horizontal adjusting bolt; 16-Vertical adjusting bolt; 17-Fasting nut one; 18-Fasting nut two; 19-Fasting nut three; 20-Through hole one; 21-Threaded hole. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings and examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0037] A construction method for butt-joint installation of large-diameter steel pipe columns, referring to Figures 1 to 6 It includes the following methods and steps:

[0038] Step S1: Based on the diameter dimensions of the lower steel pipe column 2 and the upper steel pipe column 9, a positioning fixture 1 is pre-formed, and multiple through holes 20 and threaded holes 21 are evenly spaced on the positioning fixture 1. For example... Figure 1 As shown, the positioning fixture 1 can be specifically configured as a cylindrical or cylindrical shape, and the diameter of the positioning fixture 1 is adapted to the diameter of the lower steel pipe column 2 and the upper steel pipe column 9. The positioning fixture 1 can be prefabricated according to the diameter of the steel pipe column and automatically cut with laser to ensure dimensional accuracy, and the horizontality of the upper and lower surfaces meets the accuracy requirements. Multiple through holes 20 and threaded holes 21 are evenly spaced on the positioning fixture 1 (specifically, four through holes 20 and four threaded holes 21 arranged alternately), which are used to connect the positioning bolt 4 and the horizontal rangefinder fixing bolt 8, respectively.

[0039] In step S2, several corresponding lower brackets 3 and upper brackets 10 are evenly installed on the top outer wall of the lower steel pipe column 2 and the bottom outer wall of the upper steel pipe column 9, respectively. Several through holes are provided on the lower brackets 3 and upper brackets 10. Preferably, the lower brackets 3 and upper brackets 10 can be fixed to the outer walls of the lower steel pipe column 2 and the upper steel pipe column 9 by welding or bolting. The lower brackets 3 and upper brackets 10 can provide auxiliary positioning and installation positioning components for the butt joint installation of the steel pipe columns.

[0040] In step S3, the positioning bolt 4 is passed through the through hole 20 on the positioning fixture 1 and the through hole 2 on the lower bracket 3, respectively. The positioning bolt 4 is initially fixed on the lower bracket 3 by the cooperation of the fastening nut 17 and the fastening nut 28. The positioning fixture 1 is supported on the top of the lower steel pipe column 2 by the positioning nut 5 sleeved on the positioning bolt 4. The inner diameter of the through hole 20 and the through hole 2 is slightly larger than the diameter of the positioning bolt 4, and the inner diameter of the fastening nut 17, the fastening nut 28 and the fastening nut 319 is adapted to the diameter of the positioning bolt 4.

[0041] Step S4: Adjust the center positioning component to align the center axis of the positioning fixture 1 with the center axis of the lower steel pipe column 2, and tighten the fastening nut 17 and fastening nut 28 to completely fix the positioning bolt 4 to the lower bracket 3. Then adjust the support height of each positioning nut 5 to ensure that the levelness of the positioning fixture 1 meets the preset requirements, so as to perform the initial positioning of the positioning nut 5.

[0042] like Figure 2 and Figure 3 As shown, the center positioning component is mounted on the positioning fixture 1. Preferably, the center positioning component includes a plurality of horizontal rangefinders 6 evenly arranged circumferentially along the positioning fixture 1. The upper end of each horizontal rangefinder 6 is fixedly connected to the positioning fixture 1 via a horizontal rangefinder fixing bolt 8 passing through a threaded hole 21 on the positioning fixture 1; the lower end of each horizontal rangefinder 6 abuts against the side wall of the lower steel pipe column 2 via a horizontal rangefinder adjusting bolt 7, thereby adjusting the distance between the horizontal rangefinder 6 and the side wall of the lower steel pipe column 2.

[0043] By measuring the levelness of the positioning fixture 1 with an external level, if the levelness does not meet the requirements, the support height of each positioning nut 5 is adjusted to adjust the local height of the positioning fixture 1, thereby achieving the required levelness. Since the horizontal distance measuring instrument 6 is fixed on the positioning fixture 1, by adjusting the adjusting bolt 7 of the horizontal distance measuring instrument, the distance from each level to the side wall of the lower steel pipe column 2 is made equal, which can drive the positioning fixture 1 to move horizontally, so that the central axis of the positioning fixture 1 is aligned with the central axis of the lower steel pipe column 2, and the positioning fixture 1 is in a horizontal state. The position of the positioning bolt 4 is determined by the aligned positioning fixture 1 to ensure the initial docking accuracy when connected to the upper steel pipe column 9, and to improve the docking efficiency. The fastening nuts 17 and 18 are located at the bottom and top of the connecting end face of the lower bracket 3, respectively. After the initial positioning of the central axis and level is completed, the positioning bolts 4 are fixedly connected to the lower bracket 3 by tightening the fastening nuts 17 and 18, thus fixing the relative positions of all positioning bolts 4 and the lower steel pipe column 2.

[0044] Step S5: After removing the positioning fixture 1, hoist the upper steel pipe column 9 so that the upper bracket 10 of the upper steel pipe column 9 passes through the corresponding positioning bolt 4 and contacts the positioning nut 5 after preliminary positioning, thereby achieving the preliminary docking of the upper steel pipe column 9 and the lower steel pipe column 2.

[0045] like Figure 4 As shown, after the positioning bolts 4 and positioning nuts 5 are positioned, the positioning fixture 1 is removed, and the upper steel pipe column 9 is hoisted to the top of the lower steel pipe column 2, so that the upper bracket 10 of the upper steel pipe column 9 passes through the corresponding positioning bolts 4 and contacts the positioning nuts 5 after preliminary positioning, which can ensure that the docking accuracy of the upper and lower steel pipe columns meets the preliminary requirements.

[0046] Step S6: Install a positioning adjustment device between the lower bracket 3 and the upper bracket 10. Use the positioning adjustment device to make precise positioning and fine adjustment of the upper steel pipe column 9. Then, use the fastening nut 3 19 to cooperate with the positioning nut 5 to completely fix the positioning bolt 4 to the upper bracket 10.

[0047] like Figure 5 and Figure 6 As shown, in this invention, the positioning adjustment device includes a positioning adjustment plate 11, and a horizontal adjustment bolt 15 and a vertical adjustment bolt 16 disposed on the positioning adjustment plate 11. The positioning adjustment plate 11 is inverted L-shaped and is installed between the upper bracket 10 and the corresponding lower bracket 3, which require fine-tuning of position, and is symmetrically disposed on both sides of the corresponding positioning bolt 4. The horizontal plate 13 of the inverted L-shaped positioning adjustment plate 11 is fixedly connected to the bottom of the upper bracket 10, and the vertical plate 14 is disposed at the end of the horizontal plate 13 away from the positioning bolt 4. The horizontal adjustment bolt 15 passes horizontally through the vertical plate 14 of the inverted L-shaped positioning adjustment plate 11 through threaded engagement and abuts against the top side of the lower bracket 3. The vertical adjustment bolt 16 passes vertically through the top surface of the lower bracket 3 and the horizontal plate 13 of the inverted L-shaped positioning adjustment plate 11 and abuts against the bottom of the upper bracket 10. By turning the horizontal adjusting bolt 15, the positioning adjusting plate 11 drives the upper steel pipe column 9 to make fine adjustments in the horizontal direction through the upper bracket 10 until the central axes of the upper and lower steel pipe columns are aligned. The horizontal plate 13 is installed on the horizontal plate of the upper bracket 10 through the vertical positioning adjusting plate bolt 12, which bears the reaction force of turning the horizontal adjusting bolt 15. By turning the vertical adjusting bolt 16, the upper bracket 10 drives the upper steel pipe column 9 to make fine adjustments in height until the levelness meets the requirements. Using the positioning adjusting plate 11, the horizontal adjusting bolt 15, and the vertical adjusting bolt 16 to make final fine adjustments to the central axis and verticality between the upper and lower steel pipe columns 2 can further improve the positioning and installation accuracy. The positioning nut 5 and the fastening nut 19 are located at the bottom and top of the connecting end face of the upper bracket 10, respectively. After the central axis and verticality are finely adjusted, the positioning bolt 4 is fixedly connected to the upper bracket 10 by tightening the fastening nut 19 and the positioning nut 5.

[0048] As one embodiment, in order to ensure that after the vertical adjusting bolt 16 is adjusted, the horizontal adjusting bolt 15 can still be aligned with the side of the horizontal plate of the lower bracket 3, the positioning adjusting plate bolt 12 only limits the horizontal plate 13 in the horizontal direction. That is, the horizontal plate 13 can slide relative to the positioning adjusting plate bolt 12 in the vertical direction. This is achieved by leaving the nuts at both ends of the upper end of the positioning adjusting plate bolt 12 loose, leaving a certain margin, generally 1-5mm is sufficient to meet the adjustment range requirements of the vertical adjusting bolt 16.

[0049] Step S7: After the precision adjustment is completed, welding is performed at the joint of the steel pipe column. After high-precision alignment, the welding quality and welding efficiency of this invention are greatly improved.

[0050] Step S8: After welding is completed, remove the lower bracket 3, upper bracket 10, positioning bolt 4, and positioning adjustment device. The disassembled positioning modules can be reused for the next installation and adjustment, effectively reducing material waste, making it highly practical and economical.

[0051] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the content of this specification should be included within the protection scope of the present invention.

Claims

1. A construction method for butt-joint installation of large-diameter steel pipe columns, used for butt-joint installation of lower and upper steel pipe columns, characterized in that, The following steps are included: Step S1: Based on the diameter of the lower and upper steel pipe columns, pre-determine the positioning fixture, and evenly alternately open multiple through holes and threaded holes on the positioning fixture. Step S2: Install multiple lower brackets and upper brackets evenly on the top outer wall of the lower steel pipe column and the bottom outer wall of the upper steel pipe column, respectively. The number and position of the lower brackets and upper brackets correspond to the first through hole. The middle of the lower brackets and upper brackets are provided with a second through hole with the same inner diameter as the first through hole. Step S3: Use positioning bolts to pass through the through hole one on the positioning fixture and the corresponding through hole two on the lower bracket respectively. Use fastening nuts one and two to fix the positioning bolts to the lower bracket initially. Use the positioning nuts on the positioning bolts to support the positioning fixture on the top of the lower steel pipe column. Step S4: Adjust the support height of each positioning nut to make the level of the positioning fixture meet the preset requirements, then adjust the center positioning component to align the positioning fixture with the center axis of the lower steel pipe column, and tighten the fastening nut one and fastening nut two to completely fix the positioning bolt to the lower bracket, so as to perform the initial positioning of the positioning nut. Step S5: After removing the positioning fixture, hoist the upper steel pipe column so that the upper bracket of the upper steel pipe column passes through the corresponding positioning bolt and contacts the positioning nut. Step S6: Install a positioning adjustment device between the upper bracket and the corresponding lower bracket. Adjust the positioning adjustment device to accurately position the upper steel pipe column. Then, use the fastening nut three to cooperate with the positioning nut to completely fix the positioning bolt to the upper bracket. Step S7: After precise positioning is completed, weld the interface between the upper and lower steel pipe columns. Step S8: After welding is completed, remove the lower bracket, upper bracket, positioning bolts, and positioning adjustment device; The central positioning component includes multiple horizontal rangefinders evenly arranged around the circumference of the positioning fixture. The upper end of each horizontal rangefinder is fixedly connected to the positioning fixture through a horizontal rangefinder fixing bolt passing through a threaded hole in the positioning fixture. The lower end of each horizontal rangefinder abuts against the side wall of the lower steel pipe column through a horizontal rangefinder adjusting bolt to adjust the distance between the horizontal rangefinder and the side wall of the lower steel pipe column. In step S4, aligning the positioning fixture with the central axis of the lower steel pipe column includes the following steps: by adjusting the adjusting bolts of the horizontal distance measuring instrument, the distance from each horizontal distance measuring instrument to the side wall of the lower steel pipe column is equal, thereby aligning the central axis of the positioning fixture with the central axis of the lower steel pipe column. The positioning adjustment device includes a positioning adjustment plate, and horizontal and vertical adjustment bolts disposed on the positioning adjustment plate; The positioning adjustment plate is installed between the upper bracket and the corresponding lower bracket, and is symmetrically arranged on both sides of the corresponding adjustment bolt. The positioning adjustment plate is composed of a horizontal plate and a vertical plate that are perpendicular to each other. The horizontal plate is fixedly connected to the bottom of the upper bracket, and the vertical plate is arranged at the end of the horizontal plate away from the positioning bolt. The horizontal adjusting bolt passes through the vertical plate of the positioning adjusting plate and abuts against the top side of the lower bracket; the vertical adjusting bolt vertically passes through the top surface of the lower bracket and the horizontal plate of the positioning adjusting plate, and abuts against the bottom of the upper bracket.

2. The construction method for butt-joint installation of large-diameter steel pipe columns according to claim 1, characterized in that, The inner diameters of the first and second through holes are slightly larger than the diameter of the positioning bolt, and the inner diameters of the first, second, and third fastening nuts are matched with the diameter of the positioning bolt.

3. The construction method for butt-joint installation of large-diameter steel pipe columns according to claim 1, characterized in that, In step S6, the precise positioning of the upper steel pipe column includes the following steps: adjusting the horizontal adjusting bolts to align the central axis of the upper steel pipe column with the central axis of the lower steel pipe column; and adjusting the vertical adjusting bolts to ensure that the levelness of the upper steel pipe column meets the preset requirements.

4. The construction method for butt joint installation of large-diameter steel pipe columns according to claim 1, characterized in that, The first and second fastening nuts are located at the bottom and top of the lower bracket connection end face, respectively. Tightening the first and second fastening nuts fixes the positioning bolt to the lower bracket. The third positioning nut and the third fastening nut are located at the bottom and top of the upper bracket connection end face, respectively. Tightening the third fastening nut and the positioning nut fixes the positioning bolt to the upper bracket.

5. The construction method for butt-joint installation of large-diameter steel pipe columns according to claim 1, characterized in that, The positioning fixture uses laser automatic cutting for blanking, and the horizontality of the upper and lower surfaces meets the preset accuracy requirements.

Images