Large-span steel structure aerial corridor structure and overall lifting construction method thereof

Abstract

The invention relates to a large-span steel structure aerial corridor structure and an integral lifting construction method thereof. The corridor structure comprises two upper-layer steel corridors and a lower-layer steel corridor, and the two upper-layer steel corridors are arranged on roofs of two buildings respectively and connected with the lower-layer steel corridor in a hinged mode. The construction method comprises the steps that the upper-layer steel corridors are assembled on the roof, the lower-layer steel corridors are assembled on the ground, and the lower-layer steel corridors are lifted to the upper-layer steel corridors through the lifting appliance for accurate butt joint. According to the method, the aerial workload is effectively reduced, the construction safety is improved, the problems of space limitation and differential settlement are solved through hinged connection, and the shock strength is enhanced. In addition, by optimizing the structural design of the beams, the bending strength and stability of the corridor are improved. According to the construction scheme, the splicing and hoisting difficulty is reduced, the stability in the rotating process and the stability of the structure are guaranteed, and a safe and efficient solution is provided for urban aerial corridor construction.

Description

Technical Field

[0001] The present invention relates to the technical field of aerial corridor structures, and in particular to a large-span steel aerial corridor structure and an overall lifting construction method thereof. Background Art

[0002] In modern urban construction, long-span steel skywalks, connecting two or more buildings, are gaining increasing attention for their unique architectural aesthetics and practicality. Skywalks not only provide convenient transportation connections but also enhance the overall coherence and aesthetics of a building complex. However, traditional skywalk structures present numerous construction challenges, particularly when high-altitude obstructions exist between adjacent buildings. Traditional hoisting methods are difficult to implement, and safety and efficiency are difficult to ensure during construction.

[0003] Existing technical solutions often require extensive aerial work to construct skywalks, increasing both construction difficulty and safety risks. Furthermore, traditional skywalks, when used on super-high-rise buildings, often require complex, bilateral, integrated hydraulic lifting techniques due to structural weight and wind forces. This increases construction costs and limits flexibility.

[0004] While some improvements have been proposed to address these issues, such as increasing the rigidity of the corridor structure to improve its stability or employing specialized lifting equipment to address space constraints, these methods often only address specific issues and fail to comprehensively improve construction safety and efficiency. Therefore, it is necessary to develop a new large-span steel-framed aerial corridor structure and its construction method to overcome the limitations of existing technologies and achieve a safer and more efficient construction process. Summary of the Invention

[0005] The present invention provides a large-span steel structure skywalk and its overall lifting construction method, aiming to address the problems of high construction difficulty, low safety, and low efficiency in the existing technology. Through innovative structural design and construction methods, the present invention can significantly improve the construction safety and efficiency of the skywalk structure while reducing construction costs, providing a new solution for modern urban construction. The present invention is implemented using the following technical solutions:

[0006] A large-span steel structure aerial corridor structure, wherein the corridor structure is arranged on the roofs of two adjacent buildings, wherein the high-altitude part of one of the buildings has a structural shape that blocks the lifting of the corridor structure, and the corridor structure includes an upper steel corridor and a lower steel corridor, wherein two upper steel corridors are provided, which are respectively placed on the roofs of the two buildings and assembled and fixed on the roofs of the two buildings, the cantilevered ends of the upper steel corridors are provided with two groups of mutually parallel double-leg beams, and the two ends of the lower steel corridor are respectively provided with two single-leg beams corresponding to the double-leg beams of the upper steel corridor, the lower steel corridor is assembled on the ground and then hoisted and lifted between the two upper steel corridors, and the single-leg beams at both ends of the lower steel corridor are respectively hinged to the double-leg beams of the two upper steel corridors.

[0007] Furthermore, the thickness of the single beam of the single-limb beam is equal to that of the double-limb beam, the distance between the two single beams of the double-limb beam is 10 mm larger than the thickness of the single beam, the hinge positions of the single-limb beam and the double-limb beam are both provided with hinge holes, and the hinge holes are both provided at the midpoint of the single beam in the height direction, the diameter of the hinge hole is d, the thickness of the single beam is D, and the height of the single beam is H, wherein d=D, H≥3d=3D.

[0008] Furthermore, the single-leg beams at both ends of the lower steel corridor are respectively hinged to the double-leg beams of the two upper steel corridors through horizontal round rods, and the horizontal round rods pass through the two groups of double-leg beams and the two single-leg beams.

[0009] The invention also includes a method for overall lifting of a large-span steel structure aerial corridor structure, comprising the following steps:

[0010] Step 1: Assemble two upper-level steel corridors on the roofs of the two buildings respectively; at the same time, install single-leg beam slide rails on the platform or ground between the two buildings;

[0011] Step 2: Install a hanger bracket on each of the two sets of double-leg beams cantilevered from the two upper steel corridors, and install a hanger on the hanger bracket position directly above the double-leg beams, with the hanger rope hanging from the middle of the double-leg beams; at the same time, assemble the lower steel corridor on the single-leg beam slide rails, and install a damping pulley on each of the two single-leg beam slide rails corresponding to the side of the building's structural shape, and the two damping pulleys are connected by a channel steel with an upward opening;

[0012] Step 3: After the upper and lower steel corridors are assembled and passed the acceptance inspection, lower the slings on the side without the building structure and connect them to the single-leg beams of the lower steel corridor respectively. The slings on the other side are on standby.

[0013] The lifting rope is slowly restored until the lower steel corridor rotates 90 degrees, that is, the lower steel corridor is in a vertical state, and the lifting is continued slowly, and the lowest point of the lower steel corridor is lifted to about 100mm from the channel steel, and the lifting is stopped, the sling is locked, and it is left for 18 hours to check whether the welds and deformation of the lower steel corridor structure, lifting points and sling brackets are normal.

[0014] Step 5: Conduct a comprehensive inspection and measure whether the lower steel corridor has any deformation. After confirming that everything is normal, carry out the overall lifting operation of the lower steel corridor;

[0015] Step 6: Hoist the entire structure synchronously to a designed elevation of approximately 200 mm, reduce the hoisting speed, and fine-tune the slings to precisely position the single-leg beam of the lower steel corridor and the double-leg beam of the upper steel corridor. When the hinge holes of the single-leg beam correspond to the hinge holes of the double-leg beam, stop hoisting, lock the slings, and perform hinged connection between the single-leg beam and the double-leg beam on the lifting side.

[0016] Step 7: After the hinged connection of the single-leg beam and the double-leg beam on the lifting side is completed, the ends of the hoisting ropes on the side corresponding to the structural shape of the building are respectively connected to the ends of the two lowest single-leg beams of the lower steel corridor;

[0017] Step 8: After the connection is completed, the hoist begins loading and lifting in stages, and the lower steel corridor begins to rotate synchronously around the hinge points of the single-leg beam and double-leg beam that have completed the hinged connection;

[0018] Step 9: Rotate the whole structure synchronously to the designed elevation of about 200 mm, reduce the lifting speed of the spreader, and fine-tune the spreader to accurately position the single-leg beam of the lower steel corridor and the double-leg beam of the upper steel corridor. When the hinge holes of the single-leg beam correspond to the hinge holes of the double-leg beam, stop lifting, lock the spreader, and perform the hinged connection between the single-leg beam and the double-leg beam on the rotating side.

[0019] Step 10: After the hinged connection of the single-leg beam and the double-leg beam on the rotating side is completed, the steel corridor and the reserved section are installed and welded. After completion, the sling is unloaded, the load is transferred to the upper steel corridor, the sling bracket and sling are removed, and the installation of the steel corridor is completed.

[0020] The large-span steel structure aerial corridor structure and the overall lifting construction method thereof of the present invention have the following significant beneficial effects:

[0021] (1) The aerial corridor structure adopts a three-stage construction method, which greatly reduces the amount of aerial work and improves the safety of the corridor structure installation. At the same time, the upper steel corridor and the lower steel corridor are connected in a hinged manner, so that the hoisting of the lower steel corridor can overcome the defect of insufficient hoisting space. At the same time, it solves the technical problem that the super-high-rise structure is not suitable for bilateral integral hydraulic hoisting. The hinged connection can make the overall corridor structure have a certain degree of variability, overcome the influence of uneven settlement of buildings on both sides, and further improve its seismic strength.

[0022] (2) By setting the beams of the upper steel corridor as double-leg beams, its bending strength can be greatly improved, making the connection between the upper steel corridor and the lower steel corridor more stable. By setting the diameter of the horizontal round rod of the hinge pin to be the same as the thickness of the single-leg beam, the strength of the hinge is further guaranteed. At the same time, the hinge points on both sides are connected by a horizontal round rod, making the two hinge points more stable, thereby improving the stability of the connected steel corridor.

[0023] (3) The construction scheme of the present application can compress the hoisting space of the lower steel corridor to the width of its thickness, greatly reducing the difficulty of assembly and hoisting. At the same time, a single-leg beam slide rail and a damping pulley are set on the frame to ensure the stability of the lower steel corridor during the rotation process, so that the lower steel corridor can be rotated by the hoist in a horizontal state, avoiding the need for additional tools to flip and temporarily fix the lower steel corridor and then connect it to the hoist. At the same time, the damping pulley can control the speed of the pulley to keep its speed in a slow range, which effectively buffers the gravitational potential energy of the lower steel corridor during the rotation process and ensures the stability of the entire rotation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the sky corridor structure of the present invention.

[0026] Figure 2 It is a partial schematic diagram of the corridor structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the assembly of the upper steel corridor of the present invention.

[0028] Figure 4It is a schematic diagram of the single-beam slide rail structure of the present invention.

[0029] Figure 5 This is a schematic diagram of the assembly of the lower steel corridor of the present invention.

[0030] Figure 6 This is a schematic diagram of the hoisting state of the lower steel corridor of the present invention.

[0031] Figure 7 This is a second schematic diagram of the hoisting state of the lower steel corridor of the present invention.

[0032] Figure 8 This is a schematic diagram of the final state of the lower steel corridor being hoisted synchronously as a whole according to the present invention.

[0033] Figure 9 It is a schematic diagram of the hinged connection of the single-limb beam and the double-limb beam of the present invention.

[0034] Figure 10 This is a schematic diagram of the completed installation of the steel corridor of the present invention.

[0035] Description of reference numerals:

[0036] 100-upper steel corridor, 101-lower steel corridor, 102-double-leg beam, 103-single-leg beam, 104-hinge hole, 105-horizontal round rod, 106-single-leg beam slide rail, 107-hanger bracket, 108-hanger, 109-damping pulley, 110-channel steel. DETAILED DESCRIPTION

[0037] The following description of the embodiments will help the public better understand the present invention, but the specific embodiments given by the applicant cannot and should not be regarded as limitations on the technical solutions of the present invention. Any changes to the definitions of components or technical features, or formal rather than substantive changes to the overall structure should be regarded as the scope of protection defined by the technical solutions of the present invention.

[0038] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," and "fixed" should be interpreted broadly. For example, these terms may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; internal communication between two components; surface contact only; or surface contact through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0039] Example 1:

[0040] A large-span steel structure aerial corridor structure, the corridor structure is set on the roof of two adjacent buildings, the high-altitude part of one of the buildings has a structural shape that blocks the lifting of the corridor structure, the corridor structure includes an upper steel corridor 100 and a lower steel corridor 101, the upper steel corridor 100 is provided with two, respectively placed on the roof of the two buildings, and respectively assembled and fixed on the roof of the two buildings, the cantilevered end of the upper steel corridor 100 is provided with two sets of mutually parallel double-leg beams 102, the lower steel corridor 101 is provided with two sets of mutually parallel double-leg beams 102, and the upper steel corridor 100 is provided with two sets of mutually parallel double-leg beams 102. Two single-leg beams 103 corresponding to the double-leg beams 102 of the upper steel corridor 100 are respectively provided at both ends of the steel corridor 101. The thickness of the single-leg beam 103 is equal to that of the double-leg beam 102. The distance between the two single beams of the double-leg beam 102 is 10 mm larger than the thickness of the single beam. The hinged positions of the single-leg beam 103 and the double-leg beam 102 are both provided with hinge holes 104, and the hinge holes 104 are both provided at the midpoint of the single beam along the height direction. The diameter of the hinge hole 104 is d, and the thickness of the single beam is d. The height of the single beam is D, the height of the single beam is H, wherein d=D, H≥3d=3D, the single beams 103 at both ends of the lower steel corridor 101 are respectively hinged to the double beams 102 of the two upper steel corridors 100 through horizontal round rods 105, and the horizontal round rods 105 pass through the two groups of double beams 102 and the two single beams 103. By setting the beams of the upper steel corridor 100 as double beams 102, its bending strength can be greatly improved, making the connection between the upper steel corridor 100 and the lower steel corridor 101 more stable. The diameter of the horizontal round rod 105 of the hinge pin is set to be the same as the thickness of the single-leg beam 103, which further ensures the strength of the hinge. At the same time, the hinge points on both sides are connected by a horizontal round rod 105, making the two hinge points more stable, thereby improving the stability of the connected steel corridor; the lower steel corridor 101 is assembled on the ground and then hoisted and lifted between the two upper steel corridors 100, and the single-leg beams 103 at both ends of the lower steel corridor 101 are respectively hinged to the double-leg beams 102 of the two upper steel corridors 100.

[0041] This aerial corridor structure adopts a three-stage construction method, which greatly reduces the amount of aerial work and improves the safety of the corridor structure installation. At the same time, the upper steel corridor 100 and the lower steel corridor 101 are connected in a hinged manner, so that the hoisting of the lower steel corridor 101 can overcome the defect of insufficient hoisting space, and at the same time solve the technical problem that the super-high-rise structure is not suitable for bilateral overall hydraulic hoisting. The hinged connection can make the overall corridor structure have a certain degree of variability, overcome the impact of uneven settlement of buildings on both sides, and further improve its seismic strength.

[0042] Example 2:

[0043] The overall lifting construction method of the above embodiment 1 comprises the following steps:

[0044] Step 1: Assemble two upper steel corridors 100 on the roofs of the two buildings respectively; at the same time, install a single-leg beam slide rail 106 on the platform or ground between the two buildings;

[0045] Step 2: Install a hanger bracket 107 on each of the two groups of double-leg beams 102 cantilevered from the two upper steel corridors 100, and install a hanger 108 on the hanger bracket 107 directly above the double-leg beams 102. The hanging rope of the hanger 108 hangs down from the middle of the double-leg beams 102. At the same time, assemble the lower steel corridor 101 on the single-leg beam slide rail 106. A damping pulley 109 is installed on each side of the two single-leg beam slide rails 106 corresponding to the structural shape of the building. The two damping pulleys 109 are connected by a channel steel 110 with an upward opening.

[0046] Step 3: After the upper steel corridor 100 and the lower steel corridor 101 are assembled and passed the inspection, the suspension rope on the side without the building structure is lowered and connected to the single-leg beam 103 of the lower steel corridor 101 respectively, and the suspension device 108 on the other side is on standby;

[0047] Step 4: Load and lift one side of the lower steel corridor 101 upward in stages. The lower steel corridor 101 begins to rotate around the lowest point of the side corresponding to the structural shape of the building. The lifting rope begins to deviate to the side with the structural shape of the building. When the lower steel corridor 101 begins to rotate around the single-leg beam 103 on the side corresponding to the structural shape of the building to a new lowest point, the lifting is stopped. The channel steel 110 connecting the two damping pulleys 109 is moved to the single-leg beam 103 so that the single-leg beam 103 falls into the opening position of the channel steel 110. Continue to load and lift upward in stages. The original lowest point leaves the single-leg beam slide rail 106 and begins to rise. The single-leg beam 103 slowly moves toward the lifting point under the action of the two damping pulleys 109. The lifting rope slowly recovers until the lower steel corridor 101 rotates 90 degrees, that is, the lower steel corridor 101 is in a vertical state. Continue to lift slowly until the lowest point of the lower steel corridor 101 is lifted to about 100 mm from the channel steel 110. Stop lifting, lock the sling 108, and let it stand for 18 hours. Check whether the welds and deformation of the lower steel corridor 101 structure, lifting points and sling bracket 107 are normal.

[0048] Step 5: Conduct a comprehensive inspection and measure whether the lower steel corridor 101 has any deformation. After confirming that everything is normal, perform the overall lifting operation of the lower steel corridor 101;

[0049] Step 6: The whole structure is synchronously lifted to a design elevation of about 200 mm, the lifting speed is reduced, and the hoist 108 is fine-tuned to precisely position the single-leg beam 103 of the lower steel corridor 101 and the double-leg beam 102 of the upper steel corridor 100. When the hinge holes 104 of the single-leg beam 103 correspond to the hinge holes 104 of the double-leg beam 102, the lifting is stopped, the hoist 108 is locked, and the single-leg beam 103 and the double-leg beam 102 on the lifting side are hingedly connected;

[0050] Step 7: After the hinged connection of the single-leg beam 103 and the double-leg beam 102 on the lifting side is completed, the ends of the lifting ropes of the sling 108 on the side corresponding to the structural shape of the building are respectively connected to the two lowest single-leg beams 103 ends of the lower steel corridor 101;

[0051] Step 8: After the connection is completed, the hoist 108 starts loading and lifting in stages, and the lower steel corridor 101 starts to rotate synchronously as a whole around the hinge points of the single-leg beam 103 and the double-leg beam 102 that have been hingedly connected;

[0052] Step 9: The whole structure is synchronously rotated to a design elevation of about 200 mm, the lifting speed of the sling 108 is reduced, and the sling 108 is fine-tuned to accurately position the single-leg beam 103 of the lower steel corridor 101 and the double-leg beam 102 of the upper steel corridor 100. When the hinge hole 104 of the single-leg beam 103 corresponds to the hinge hole 104 of the double-leg beam 102, the lifting is stopped, the sling 108 is locked, and the single-leg beam 103 and the double-leg beam 102 on the rotating side are hingedly connected;

[0053] Step 10: After the hinged connection of the single-leg beam 103 and the double-leg beam 102 on the rotating side is completed, the steel corridor and the reserved section are installed and welded. After completion, the sling 108 is unloaded, the load is transferred to the upper steel corridor 100, the sling bracket 107 and the sling 108 are removed, and the installation of the steel corridor is completed.

[0054] The above construction scheme can compress the hoisting space of the lower steel corridor 101 to the width of its thickness, greatly reducing the difficulty of assembly and hoisting. At the same time, a single-beam slide rail 106 and a damping pulley 109 are set on the frame to ensure the stability of the lower steel corridor 101 during the rotation process, so that the lower steel corridor 101 can be rotated by the sling 108 in a horizontal state, avoiding the need for additional tools to flip and temporarily fix the lower steel corridor 101 and then connect the sling 108. At the same time, the damping pulley 109 can control the speed of the pulley, so that its speed is controlled in a slow range, which well buffers the gravitational potential energy of the lower steel corridor 101 during the rotation process and ensures the stability of the entire rotation process.

[0055] Those skilled in the art should understand that they can implement variations by combining the prior art with the above embodiments, which will not be described in detail here. Such variations do not affect the essence of the present invention and will not be described in detail here.

[0056] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-mentioned disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention that do not depart from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A large-span steel structure aerial corridor, the corridor structure is installed on the roofs of two adjacent buildings, and the high-altitude part of one of the buildings has a structural shape that blocks the lifting of the corridor structure, characterized by: The corridor structure comprises an upper steel corridor (100) and a lower steel corridor (101). Two upper steel corridors (100) are provided and respectively placed on the roofs of two buildings and assembled and fixed on the roofs of the two buildings. The cantilevered end of the upper steel corridor (100) is provided with two groups of mutually parallel double-leg beams (102). The two ends of the lower steel corridor (101) are respectively provided with two single-leg beams (103) corresponding to the double-leg beams (102) of the upper steel corridor (100). The lower steel corridor (101) is assembled on the ground and then hoisted and lifted between the two upper steel corridors (100). The single-leg beams (103) at the two ends of the lower steel corridor (101) are respectively hinged to the double-leg beams (102) of the two upper steel corridors (100).

2. The large-span steel structure aerial corridor structure and the overall lifting construction method thereof according to claim 1 are characterized by: The thickness of the single beam of the single limb beam (103) is equal to that of the double limb beam (102); the distance between the two single beams of the double limb beam (102) is 10 mm greater than the thickness of the single beam; hinge holes (104) are provided at the hinged positions of the single limb beam (103) and the double limb beam (102); and the hinge holes (104) are both provided at the midpoint of the single beam in the height direction; the diameter of the hinge hole (104) is d, the thickness of the single beam is D, and the height of the single beam is H, wherein d=D, and H≥3d=3D.

3. The large-span steel structure aerial corridor structure and the overall lifting construction method thereof according to claim 1 are characterized by: The single-leg beams (103) at both ends of the lower steel corridor (101) are respectively hinged to the double-leg beams (102) of the two upper steel corridors (100) through horizontal round rods (105), and the horizontal round rods (105) pass through the two groups of double-leg beams (102) and the two single-leg beams (103).

4. A method for integrally lifting a large-span steel structure aerial corridor according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: Assemble two upper steel corridors (100) on the roofs of the two buildings respectively; at the same time, install a single-leg beam slide rail (106) on the platform or ground between the two buildings; Step 2: respectively arranging a hanger bracket (107) on two groups of double-limb beams (102) cantilevered from two upper steel corridors (100), arranging a hanger (108) on the hanger bracket (107) position just above the double-limb beams (102), and the hanging rope of the hanger (108) is hung from the middle of the double-limb beams (102); at the same time, assembling the lower steel corridor (101) on the single-limb beam slide rail (106), and respectively arranging a damping pulley (109) on the side corresponding to the structural shape of the building on the two single-limb beam slide rails (106), and connecting the two damping pulleys (109) by a channel steel (110) with an opening upward; Step 3: After the upper steel corridor (100) and the lower steel corridor (101) are assembled and accepted, the suspension rope on the side without the structural shape of the building is lowered and connected to the single-leg beam (103) of the lower steel corridor (101), and the suspension device (108) on the other side is on standby; Step 4: Load and lift one side of the lower steel corridor (101) upward in stages, and the lower steel corridor (101) begins to rotate around the lowest point of the side corresponding to the structural shape of the building, and the lifting rope begins to deviate to the side with the structural shape of the building. When the lower steel corridor (101) begins to rotate around the single-leg beam (103) on the side corresponding to the structural shape of the building to a new lowest point, the lifting is stopped, and the channel steel (110) connecting the two damping pulleys (109) is moved to the single-leg beam (103), so that the single-leg beam (103) falls into the opening position of the channel steel (110), and then Continue to load and lift upward in stages. The original lowest point leaves the single-leg beam slide rail (106) and begins to rise. The single-leg beam (103) slowly moves toward the lifting point under the action of two damping pulleys (109). The lifting rope slowly recovers until the lower steel corridor (101) rotates 90 degrees, that is, the lower steel corridor (101) is in a vertical state. Continue to lift slowly until the lowest point of the lower steel corridor (101) is lifted to about 100 mm from the channel steel (110). Stop lifting, lock the sling (108), and let it stand for 18 hours. Check whether the welds and deformation of the lower steel corridor (101), the lifting points and the sling bracket (107) are normal. Step 5: Conduct a comprehensive inspection and measure whether the lower steel corridor (101) is deformed. After confirming that everything is normal, perform the overall lifting operation of the lower steel corridor (101); Step 6: hoist the entire structure synchronously to a design elevation of about 200 mm, reduce the hoisting speed, and fine-tune the sling (108) so that the single-limb beam (103) of the lower steel corridor (101) and the double-limb beam (102) of the upper steel corridor (100) are precisely positioned at their interfaces. When the hinge hole (104) of the single-limb beam (103) corresponds to the hinge hole (104) of the double-limb beam (102), stop hoisting, lock the sling (108), and perform hinged connection between the single-limb beam (103) and the double-limb beam (102) on the lifting side. Step 7: After the hinged connection of the single-leg beam (103) and the double-leg beam (102) on the lifting side is completed, the ends of the lifting ropes of the sling (108) on the side corresponding to the structural shape of the building are respectively connected to the two lowest single-leg beams (103) end points of the lower steel corridor (101); Step 8: After the connection is completed, the sling (108) starts loading and lifting in stages, and the lower steel corridor (101) starts to rotate synchronously as a whole around the hinge points of the single-leg beam (103) and the double-leg beam (102) that have been hingedly connected; Step 9: The whole is synchronously rotated to a design elevation of about 200 mm, the lifting speed of the sling (108) is reduced, and the sling (108) is fine-tuned to make the single-limb beam (103) of the lower steel corridor (101) and the double-limb beam (102) of the upper steel corridor (100) accurately positioned at the interface, so that the hinge hole (104) of the single-limb beam (103) corresponds to the hinge hole (104) of the double-limb beam (102), then the lifting is stopped, the sling (108) is locked, and the single-limb beam (103) and the double-limb beam (102) on the rotating side are hingedly connected; Step 10: After the hinged connection of the single-leg beam (103) and the double-leg beam (102) on the rotating side is completed, the steel corridor and the reserved section are installed and welded. After completion, the sling (108) is unloaded, and the load is transferred to the upper steel corridor (100). The sling bracket (107) and the sling (108) are removed to complete the installation of the steel corridor.

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