Manufacturing and installation method of aluminum alloy long skeleton splicing support structure

Abstract

The application discloses a manufacturing and installing method of an aluminum alloy long skeleton splicing support structure, which comprises the following steps of S1, measuring the height and corner width of a transportation channel on site, and simulating vertical transportation to obtain the maximum transportation size; S2, according to the maximum transportation size, designing and adjusting the cutting position of a transverse long skeleton and the installing position of an intermediate skeleton, and meanwhile, preparing an inner sleeve pipe and an inner sleeve corner code and opening holes; S3, cutting the long skeleton and opening holes on the long skeleton; S4, moving the processed long skeleton to the site, and assembling the long skeleton by using the inner sleeve pipe and self-tapping screws; and S5, positioning and marking lines at the separation joint of the lower end surface of the transverse long skeleton, and vertically fixing the fixed skeleton at the separation joint by the inner sleeve corner code. According to the application, the long skeleton is divided into two sections, the inner sleeve pipe is used to realize the portability of transportation and splicing, meanwhile, the intermediate skeleton is additionally arranged at the connecting position, and the vertical skeleton is installed at the two ends of the long skeleton in subsequent construction, so that the overall stability and local rigidity of the structure are effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of building structure connection technology, and in particular relates to a method for manufacturing and installing an aluminum alloy long frame splicing support structure. Background Technology

[0002] In the field of construction engineering, especially in the construction of high-rise buildings or long-span structures, extra-long materials, such as extra-long steel bars and extra-long steel sections, are often required. These extra-long materials are crucial for ensuring the continuity and integrity of the structure.

[0003] However, due to the special dimensions of extra-long materials, high requirements are placed on transportation and handling equipment. Existing construction methods typically require all materials to be processed before being transported to the site. However, under site constraints, such as limited space in on-site transport channels, the transportation and handling of these extra-long materials becomes particularly difficult. In such cases, external hoisting is generally used to transport, handle, and install extra-long materials to the installation site, which not only increases logistics costs but may also lead to delays in construction progress. Furthermore, during on-site installation of extra-long materials, it is difficult to ensure the integrity of the materials and installation accuracy. Due to site limitations, extra-long materials may bend or break during installation, affecting strength and stability, and consequently impacting the load-bearing capacity and durability of the structure. Especially in modular prefabricated buildings, the transverse frame length as beams is often quite long. When aluminum alloy square tubes are used to reduce weight, the lower strength of aluminum alloy necessitates even higher load-bearing requirements.

[0004] A search revealed a Chinese invention document with publication number CN103216012B, which discloses a fully bolted splicing node for a closed-section column with an inner sleeve slot. This node "belongs to the technical field of steel structure node connections, specifically involving a splicing node for closed-section components, consisting of upper and lower steel pipes to be connected, a slotted inner sleeve, bolts, and an inner liner. The node uses the slotted inner sleeve as the splicing component and bolts as fasteners, and the inner liner can be used to increase the friction of the bolt friction-type connection." While the design of the inner sleeve combined with bolts and the inner liner in this invention has advantages such as ease of construction, no need for on-site welding, and labor savings, it also presents some potential problems.

[0005] For example, in the installation method of this invention, the length of the inner sleeve is limited because it needs to be matched with the bolt and the inner liner; the bolt nut is located inside the inner sleeve and the nut is located outside the steel pipe column, which may make it difficult for the bolt to be tightened effectively, especially when the inner sleeve is long or the installation space is narrow; moreover, regular inspection and maintenance under the bolt connection method may be more difficult, especially when it is necessary to check the tightness of the bolt or to retighten it.

[0006] Furthermore, while increasing the number of bolts can provide more connection points and thus improve the stability of the connection to some extent, this is not without its limitations: drilling bolt holes in steel pipe columns weakens the cross-section of the steel pipe, especially when the pipe wall is thin. The location, size, and number of bolt holes need to be carefully considered to avoid excessively weakening the load-bearing capacity of the structure. The spacing between bolts and the distance from the bolt to the edge of the steel pipe (edge ​​distance) have a significant impact on the structural strength. If the bolt spacing is too small or the edge distance is insufficient, it may lead to local stress concentration, increasing the risk of brittle fracture of the structure. The bolt tightening sequence is also crucial to the stability of the structure. An improper tightening sequence may lead to structural deformation or uneven stress in the connection. The bolt connection design in this invention lacks a balance of multiple factors to ensure the stability and strength of the overall structure. The densely packed bolts on all four sides may not provide sufficient support for the entire connection node, affecting the stability and load-bearing capacity of the structure under dynamic loads. Moreover, during on-site installation, multiple bolt holes need to be aligned, and any small installation error may accumulate and lead to connection problems. Summary of the Invention

[0007] To address the problems existing in the prior art, the present invention aims to provide a method for manufacturing and installing an aluminum alloy long frame splicing support structure. This method effectively addresses the spatial limitations of on-site transportation channels by dividing the extra-long frame into two sections, making material transportation more convenient and flexible. Furthermore, the use of steel inner sleeves increases the rigidity of the extra-long aluminum alloy frame, thereby solving the limitations in the transportation and installation of extra-long materials, improving the transportation efficiency and installation quality of extra-long materials. Simultaneously, a rationally designed steel inner sleeve connection method ensures the connection stability and load-bearing safety of the overall frame structure.

[0008] To achieve the above and other related objectives, the present invention adopts the following technical solution:

[0009] This invention provides a method for manufacturing and installing an aluminum alloy long frame splicing support structure. The long frame splicing support structure includes a transverse long frame and an intermediate frame for supporting the transverse long frame. The manufacturing and installation method includes the following steps.

[0010] S1. After measuring the height and corner width of the transportation channel at the construction site, conduct a vertical transportation simulation of the structural components to obtain the maximum transportation dimensions of the structural components at the construction site.

[0011] S2. Based on the maximum transport dimensions of the structural components, design and adjust the cut-off position of the transverse long frame and the installation position of the intermediate frame. At the same time, prepare inner sleeves and inner sleeve corner brackets for fixed connection between the frames. Open positioning holes on the inner sleeves and open mounting holes on the inner sleeve corner brackets.

[0012] S3. Cut the long frame structure component to form a separation seam, and at the same time perform hole processing on the long frame structure component;

[0013] S4. Transport the processed long frame structural components to the construction site, and assemble the transverse long frame using inner sleeves and self-tapping screws:

[0014] S5. Mark the dividing line at the lower end of the horizontal long frame, and fix the frame vertically at the dividing line using the inner corner bracket.

[0015] As a preferred technical solution, the specific steps of step S2 include:

[0016] S2-1. Adjust the cut-off position of the transverse long frame to ensure that the maximum dimensions of the two sections after the transverse long frame is cut off are not greater than the maximum transport dimensions of the structural components. At the same time, ensure that the installation position of the intermediate frame is located at the cut-off point of the transverse long frame.

[0017] S2-2. Select an inner sleeve with an outer cross section slightly smaller than the inner cross section of the transverse long skeleton, and open two sets of positioning holes on the inner sleeve. The two sets of positioning holes are distributed on the upper end face and the lower end face of the inner sleeve, and each set of positioning holes includes a left positioning hole located on the left side of the inner sleeve and a right positioning hole located on the right side of the inner sleeve.

[0018] As a preferred technical solution, the specific steps of step S3 include:

[0019] S3-1. Cut the horizontal long skeleton into a left horizontal skeleton and a right horizontal skeleton, and the cut-off position of the left horizontal skeleton and the right horizontal skeleton forms a separation seam.

[0020] S3-2. A left connecting hole and a right connecting hole are respectively opened on the left horizontal frame and the right horizontal frame. The left connecting hole corresponds to the position and shape of the positioning hole located on the left side of the inner sleeve, and the right connecting hole corresponds to the position and shape of the positioning hole located on the right side of the inner sleeve.

[0021] As a preferred technical solution, the specific steps of step S4 include:

[0022] S4-1. Fix the upper surface of the transverse long frame:

[0023] With the top surface of the left horizontal frame facing upwards, insert the inner sleeve onto one end of the partition seam on the left horizontal frame, aligning the left connecting hole with the positioning hole on the left side of the inner sleeve. Then, use an electric drill to preliminarily fix the inner sleeve to the left horizontal frame with self-tapping screws. Next, insert one end of the partition seam of the right horizontal frame onto the inner sleeve, aligning the right connecting hole with the positioning hole on the right side of the inner sleeve, and then fix it with self-tapping screws to complete the fixation of the top surface of the horizontal long frame.

[0024] S4-2. Flip 180 degrees to fix the lower end face of the horizontal long frame:

[0025] Flip the horizontal long frame 180 degrees to the opposite side so that the lower end of the horizontal long frame is facing upwards. Use self-tapping screws to fix the remaining connecting holes on the left and right horizontal frames to the corresponding positioning holes on the inner sleeve.

[0026] As a preferred technical solution, the specific steps of step S5 include:

[0027] S5-1. Mark the intermediate skeleton positioning line at the joint of the partition seam on the lower end face of the horizontal long skeleton.

[0028] S5-2. Using the positioning line of the middle skeleton as a reference, position inward and mark the installation positioning line and fixing hole of the inner sleeve corner bracket. Drill the hole and install the inner sleeve corner bracket.

[0029] S5-3. Assemble the intermediate frame into the partition joint at the lower end of the horizontal long frame using the inner corner bracket.

[0030] As a preferred technical solution, the specific steps of step S5-2 include:

[0031] Remove the central frame. Using a measuring tape and pen, draw the installation positioning line of the inner sleeve corner bracket inwards, centered, based on the positioning line of the central frame. Place the square inner sleeve corner bracket along the installation positioning line, and mark the pre-drilling point according to the mounting hole on the bottom surface of the inner sleeve corner bracket. After removing the inner sleeve corner bracket, drill holes at the pre-drilling points. After drilling, place the inner sleeve corner bracket and fix it with self-tapping screws after aligning the holes. Further, as described above...

[0032] As a further preferred technical solution, in step S5-2, the mounting holes on the bottom surface of the inner sleeve corner bracket are arranged in two parallel rows, with three through holes in each row. The specific order of self-tapping screw fixing is: upper right corner → lower left corner → upper left corner → upper right corner → middle right side → middle left side.

[0033] As a further preferred technical solution, the transverse long frame is made of aluminum alloy square tube, and the inner sleeve is made of steel square tube lined with galvanized steel.

[0034] As described above, the present invention has the following beneficial effects:

[0035] (1) The present invention provides a method for manufacturing and installing an aluminum alloy long frame splicing support structure. The present invention cleverly divides the ultra-long aluminum alloy frame into two sections through the inner sleeve and its splicing method, so that the length of each section can adapt to the space constraints of the on-site transportation channel. This segmented design significantly improves the convenience and flexibility of transporting ultra-long frames and effectively solves the transportation restriction problem caused by site limitations. At the same time, the use of the inner sleeve connection not only ensures the integrity of the ultra-long frame during transportation and installation, but also significantly enhances the safety and reliability of the final structure, providing a solid guarantee for the quality of the construction project.

[0036] (2) The present invention provides a method for manufacturing and installing an aluminum alloy long frame splicing support structure. The present invention adopts a steel inner sleeve connection method. Through reasonable design, a firm connection between adjacent sections of the ultra-long frame is achieved. This connection method not only simplifies the installation process, but also ensures the strength and rigidity of the connection points, maintaining the stability and load-bearing capacity of the overall frame structure.

[0037] (3) The method for manufacturing and installing an aluminum alloy long frame splicing support structure of the present invention benefits from the segmented transportation of the ultra-long frame and the inner sleeve connection method, which enables construction personnel to complete the material handling and installation work more quickly. This improvement greatly shortens the construction cycle and significantly improves construction efficiency.

[0038] (4) The method for manufacturing and installing an aluminum alloy long frame splicing support structure of the present invention, compared with the prior art, ensures the accuracy of the design by on-site measurement and simulation during the design stage; and, in the installation process, the present invention uses self-tapping screws instead of traditional bolts and screws, thereby avoiding the limitation of the inner sleeve length, so that even ultra-long structural components can achieve higher strength and more precise installation.

[0039] (5) The present invention provides a method for manufacturing and installing an aluminum alloy long frame splicing support structure. In view of the problem that the aluminum alloy frame may have insufficient strength when it is long, a steel inner sleeve is used for reinforcement. This reinforcement measure makes full use of the high strength characteristics of steel and effectively improves the load-bearing capacity and durability of the overall structure. In addition, by using aluminum alloy material for the transverse long frame and using galvanized steel material for the inner sleeve, a better protection effect is achieved. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the installation sequence of the transverse long frame spliced ​​by the inner sleeve in this invention.

[0041] Figure 2 This is a schematic diagram showing the fixing and installation sequence of the screws at the mounting holes of the inner sleeve corner bracket in this invention.

[0042] Figure 3 This is a schematic diagram of the structure of the present invention, which uses inner corner brackets to splice and assemble the intermediate skeleton and the transverse long skeleton.

[0043] Figure 4 This is a front view of the transverse long skeleton at the partition seam in this invention.

[0044] The specific explanations of the reference numerals in the attached drawings are as follows: 201, horizontal long frame; 2011, left horizontal frame; 2012, right horizontal frame; 2013, inner sleeve; 2014, separation joint; 202, inner sleeve corner bracket; 203, middle frame. Detailed Implementation

[0045] To better understand the purpose, structure, and function of this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments.

[0046] In the description of this invention, it should be noted that the positional relationships indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" are based on the positional relationships shown in the accompanying drawings and are only for the purpose of facilitating the description of the embodiments of this invention and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific direction, and therefore should not be construed as a limitation of this invention.

[0047] Example

[0048] In this embodiment, due to limitations in on-site high-altitude operations, the prefabricated building cannot be hoisted as a whole. The building structure needs to be disassembled into individual structural components and then transported vertically through elevator lobbies and staircases. However, the transverse long frame 201, one of the main structural components, cannot be directly transported due to length limitations. Furthermore, since both the transverse long frame 201 and the intermediate frame 203 in this embodiment are made of aluminum alloy square tubing, their cross-sectional width limits prevent the use of a method that allows them to pass vertically through staircase openings.

[0049] Based on this, such as Figures 1 to 4 As shown in the figure, this embodiment provides a method for fabricating and installing an aluminum alloy long frame splicing support structure, including the following steps:

[0050] S1. Measure the dimensions of the transportation channels at the construction site, including the height of the elevator hall and the corner width of the stairwell. Then, based on the measured data, use animation transportation simulation software to simulate the vertical transportation of large structural components and obtain the maximum transportation dimensions of the structural components at the construction site.

[0051] S2. Based on the maximum transport dimensions of the structural components, design and adjust the cut-off position of the transverse long frame 201 and the installation position of the intermediate frame 203. At the same time, prepare the inner sleeve 2013 and the inner sleeve corner bracket 202 for fixed connection between the frames. Open the positioning hole on the inner sleeve 2013 and the mounting hole on the inner sleeve corner bracket 202.

[0052] S2-1. Adjust the cut-off position of the transverse long frame 201 to ensure that the maximum size of each of the two sections after the transverse long frame 201 is cut off is not greater than the maximum transport size of the structural component. At the same time, adjust the installation position of the intermediate frame 203 to the midpoint of the cut-off position of the transverse long frame 201, so as to provide upward support for the subsequent connection point of the inner sleeve 2013 and further enhance the overall structural stability after splicing.

[0053] S2-2. Select an inner sleeve 2013 with an outer cross-section slightly smaller than the inner cross-section of the transverse long frame 201. Two sets of positioning holes are opened on the inner sleeve 2013. The two sets of positioning holes are distributed on the upper and lower end faces of the inner sleeve 2013. Each set of positioning holes includes a left positioning hole on the left side of the inner sleeve 2013 and a right positioning hole on the right side of the inner sleeve 2013. The inner sleeve corner bracket 202 is a square corner bracket with an open top. The inner sleeve corner bracket 202 is provided with a first mounting hole and a second mounting hole. The first mounting hole is located on the bottom surface of the inner sleeve corner bracket 202 and is used to fix the transverse long frame 201. The second mounting hole is located on the left and right sides of the inner sleeve corner bracket 202 and is used to fix the middle frame 203.

[0054] In this embodiment, the transverse long frame 201 is made of aluminum alloy square tubing, and the inner sleeve 2013 is made of steel square tubing lined with galvanized steel. Steel has higher strength and rigidity than aluminum alloy, providing stronger connections and support, and improving the overall structural stability. Simultaneously, the galvanized layer improves the wear resistance of the inner sleeve, reducing wear caused by friction. Furthermore, the galvanized layer itself prevents rust and corrosion in outdoor or humid environments. In the connection between the steel and aluminum alloy structures, the galvanized layer can also act as a sacrificial anode, providing electrochemical protection to the aluminum alloy square tubing, preventing electrochemical corrosion, and thus contributing to extending the service life of the structure.

[0055] S3. Process the transverse long frame 201 structural components and transport them to the construction site.

[0056] S3-1. The transverse long skeleton 201 is cut into a left transverse skeleton 2011 and a right transverse skeleton 2012. The cut-off positions of the left transverse skeleton 2011 and the right transverse skeleton 2012 form a separation seam 2014.

[0057] In this embodiment, the cross-sectional dimensions of the transverse long frame 201 are 100mm*100mm, and the length of the shorter side of the transverse frame after cutting is 850mm. The cross-sectional dimensions of the inner sleeve 2013 are 93mm*93mm, and the length is 700mm. The length of the inner sleeve 2013 is slightly less than the length of the shorter side of the transverse frame, thereby providing better splicing support strength for the transverse frames on both sides.

[0058] S3-2. A left connecting hole and a right connecting hole are respectively opened on the left horizontal frame 2011 and the right horizontal frame 2012. The left connecting hole corresponds to the position and shape of the positioning hole located on the left side of the inner sleeve 2013, and the right connecting hole corresponds to the position and shape of the positioning hole located on the right side of the inner sleeve 2013.

[0059] S4. Transport the processed structural components to the construction site and assemble the transverse long frame 201 using the inner sleeve 2013 and self-tapping screws.

[0060] S4-1. Fix the upper surface of the transverse long frame 201:

[0061] With the upper end of the left horizontal frame 2011 facing upwards, insert the left end of the inner sleeve 2013 onto the end of the left horizontal frame 2011 near the partition joint 2014, aligning the left connecting hole with the left positioning hole of the inner sleeve 2013. Then, use an electric drill to drive in self-tapping screws in sequence to initially fix the inner sleeve 2013 onto the left horizontal frame 2011, preventing displacement when the left horizontal frame 2011 and the right horizontal frame 2012 are installed simultaneously. Next, insert the end of the right horizontal frame 2012 near the partition joint 2014 onto the right end of the inner sleeve 2013, aligning the right connecting hole with the right positioning hole of the inner sleeve 2013. Then, fix it with self-tapping screws to complete the upper end fixing of the horizontal long frame 201.

[0062] S4-2. Flip 180 degrees to fix the lower end face of the transverse long frame 201:

[0063] Flip the horizontal long frame 201 180 degrees to the opposite side so that the lower end face of the horizontal long frame 201 faces upward. Use self-tapping screws to fix the remaining connecting holes on the left horizontal frame 2011 and the right horizontal frame 2012 to the corresponding positioning holes on the inner sleeve 2013.

[0064] S5. Mark the position at the partition joint 2014 on the lower end face of the horizontal long frame 201, and fix the fixed frame vertically at the partition joint 2014 using the inner corner bracket 202.

[0065] S5-1. Mark the positioning lines of the intermediate skeleton 203 on the lower end face of the transverse long skeleton 201:

[0066] At the junction of the partition seam 2014 on the lower end face of the horizontal long frame 201, place the middle frame 203 vertically, use a tape measure to measure and position it so that the partition seam 2014 falls on the axis of symmetry of the middle frame 203, and draw the positioning line of the middle frame 203 with a pen.

[0067] S5-2. Using the positioning line of the intermediate frame 203 as a reference, position inwards, and mark the installation positioning line and fixing hole of the inner sleeve corner bracket 202 on the transverse long frame 201. Drill the hole and install the inner sleeve corner bracket 202:

[0068] Remove the intermediate frame 203. Using a measuring tape and pen, draw the installation positioning line of the inner sleeve corner bracket 202 inward and center it, based on the positioning line of the intermediate frame 203. Place the square inner sleeve corner bracket 202 along the installation positioning line, and mark the preparatory hole point according to the mounting hole on the bottom surface of the inner sleeve corner bracket 202. This avoids the impact of installation errors accumulated during the installation of the transverse long frame 201 and improves the support accuracy of the overall splicing structure. After removing the inner sleeve corner bracket 202, drill holes at the preparatory hole point. After drilling, place the inner sleeve corner bracket 202 and fix it with self-tapping screws after aligning the holes.

[0069] In this embodiment, the mounting holes on the bottom surface of the inner corner bracket 202 are arranged in two parallel rows, with three through holes in each row. Therefore, the specific order of self-tapping screw installation is: upper right corner → lower left corner → upper left corner → upper right corner → middle right side → middle left side. That is, first install the diagonal screws and fix them in a crisscross pattern, and finally install the screw located in the middle, so as to ensure that the connection part is evenly stressed and the installation structure is stable and fixed.

[0070] S5-3. Assemble the intermediate frame 203 at the joint of the partition seam 2014 on the lower end face of the transverse long frame 201 using the inner corner bracket 202:

[0071] The intermediate frame 203 is fitted onto the inner corner bracket 202, and the intermediate frame 203 is fixed by using the mounting holes located on the side of the inner corner bracket 202 and self-tapping screws.

[0072] The manufacturing and installation method of this invention divides the aluminum alloy transverse long frame 201 into two sections and adds an intermediate frame 203 at the connection point. Combined with the vertical frames installed at both ends of the transverse long frame 201 during subsequent construction, this effectively improves the overall stability and local stiffness of the structure. This design not only reduces bending or deformation of the frame but also reduces stress concentration by uniformly distributing the load, enhancing the structure's load-bearing efficiency and connection reliability. Simultaneously, it plays a crucial role in seismic design, absorbing and dissipating seismic energy by improving the structure's ductility. The modular manufacturing and installation method of this invention simplifies the construction process, especially in large-scale construction projects, significantly reducing on-site construction difficulty and accelerating construction speed. This aligns with the requirements of green building and sustainable development, reducing on-site construction noise, dust, and waste, embodying the concept of energy conservation and environmental protection. Furthermore, this method improves the flexibility and adaptability of structural design, facilitating later maintenance and replacement. In summary, the manufacturing and installation method of this invention has significant advantages and promising application prospects in terms of construction convenience, economy, and environmental protection.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Those skilled in the art can make various changes or equivalent substitutions to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of this invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this invention.

Claims

1. A method for fabricating and installing an aluminum alloy long frame splicing support structure, characterized in that, The long skeleton splicing support The support structure includes a transverse long frame (201) and an intermediate frame (203) for supporting the transverse long frame (201). The manufacturing and installation method includes the following steps: S1. After measuring the height and corner width of the transportation channel at the construction site, conduct a vertical transportation simulation of the structural components to obtain the maximum transportation dimensions of the structural components at the construction site. S2. Based on the maximum transport dimensions of the structural components, design and adjust the cut-off position of the transverse long frame (201) and the installation position of the intermediate frame (203). At the same time, prepare the inner sleeve (2013) and inner sleeve corner bracket (202) for fixed connection between the frames. Open the positioning hole on the inner sleeve (2013) and the mounting hole on the inner sleeve corner bracket (202). S3. Cut the long frame structure component to form a separation seam (2014), and at the same time perform hole processing on the long frame structure component; S4. Transport the processed long frame structural components to the construction site, and assemble the transverse long frame (201) using the inner sleeve (2013) and fasteners: S5. Mark the position at the partition joint (2014) on the lower end face of the transverse long frame (201), and fix the fixed frame vertically at the partition joint (2014) using the inner corner bracket (202). S5-1. Mark the positioning line of the intermediate skeleton (203) at the connection of the partition seam (2014) on the lower end face of the transverse long skeleton (201); S5-2. Using the positioning line of the intermediate frame (203) as a reference, position inwards and mark the installation positioning line and fixing hole of the inner sleeve corner bracket (202), drill the hole and install the inner sleeve corner bracket (202); the specific steps include: Remove the intermediate frame (203), and using a measuring tape and pen, draw the installation positioning line of the inner sleeve corner bracket (202) inward and center it with the positioning line of the intermediate frame (203) as a reference. Place the square inner sleeve corner bracket (202) along the installation positioning line, and mark the preparation hole point with a pen according to the installation hole on the bottom surface of the inner sleeve corner bracket (202). After removing the inner sleeve corner bracket (202), drill a hole at the preparation hole point. After drilling the hole, place the inner sleeve corner bracket (202) and fix it with fasteners after aligning the hole. S5-3. The middle frame (203) is spliced ​​and assembled at the joint of the partition seam (2014) on the lower end face of the transverse long frame (201) by using the inner corner bracket (202).

2. The method for fabricating and installing an aluminum alloy long frame splicing support structure according to claim 1, characterized in that, The specific steps of step S2 include: S2-1. Adjust the cut-off position of the transverse long frame (201) to ensure that the maximum size of the two sections after the transverse long frame (201) is cut off is not greater than the maximum transport size of the structural component. At the same time, ensure that the installation position of the intermediate frame (203) is located at the cut-off point of the transverse long frame (201). S2-2. Select an inner sleeve (2013) with an outer cross section slightly smaller than the inner cross section of the transverse long skeleton (201), and open two sets of positioning holes on the inner sleeve (2013). The two sets of positioning holes are distributed on the upper end face and the lower end face of the inner sleeve (2013), and each set of positioning holes includes a left positioning hole located on the left side of the inner sleeve (2013) and a right positioning hole located on the right side of the inner sleeve (2013).

3. The method for manufacturing and installing an aluminum alloy long frame splicing support structure according to claim 2, characterized in that, The specific steps of step S3 include: S3-1. Cut the transverse long skeleton (201) into a left transverse skeleton (2011) and a right transverse skeleton (2012). The cut-off positions of the left transverse skeleton (2011) and the right transverse skeleton (2012) form a dividing seam (2014). S3-2. A left connecting hole and a right connecting hole are respectively opened on the left horizontal frame (2011) and the right horizontal frame (2012). The left connecting hole corresponds to the position and shape of the positioning hole located on the left side of the inner sleeve (2013), and the right connecting hole corresponds to the position and shape of the positioning hole located on the right side of the inner sleeve (2013).

4. The method for fabricating and installing an aluminum alloy long frame splicing support structure according to claim 3, characterized in that, The specific steps of step S4 include: S4-1. Fix the upper surface of the transverse long frame (201): With the upper end of the left horizontal frame (2011) facing upwards, insert the inner sleeve (2013) onto one end of the partition seam (2014) on the left horizontal frame (2011), aligning the left connecting hole with the left positioning hole of the inner sleeve (2013). Then, use an electric drill to preliminarily fix the inner sleeve (2013) and the left horizontal frame (2011) with fasteners in sequence. Next, insert one end of the partition seam (2014) of the right horizontal frame (2012) onto the inner sleeve (2013), aligning the right connecting hole with the right positioning hole of the inner sleeve (2013), and then fix it with fasteners to complete the fixing of the upper end of the horizontal long frame (201). S4-2. Flip 180 degrees to fix the lower end face of the transverse long frame (201): Flip the transverse long frame (201) 180 degrees to the opposite side, so that the lower end face of the transverse long frame (201) faces upward. Use fasteners to align the remaining connecting holes on the left transverse frame (2011) and the right transverse frame (2012) with the corresponding positioning holes on the inner sleeve (2013). fixed.

5. The method for fabricating and installing an aluminum alloy long frame splicing support structure according to claim 1, characterized in that, In step S5-2, the mounting holes on the bottom surface of the inner sleeve corner bracket (202) are arranged in two parallel rows, with 3 through holes in each row. The specific order of fastener installation is: upper right corner → lower left corner → upper left corner → upper right corner → middle right side → middle left side.

6. A method for manufacturing and installing an aluminum alloy long frame splicing support structure according to any one of claims 1-5, characterized in that, The transverse long frame (201) is made of aluminum alloy square tube, and the inner sleeve (2013) is made of steel square tube with galvanized inner lining.

Images