A structural installation method for a long-distance steel frame traffic corridor

Abstract

The present invention is a method for installing the structure of a long-distance steel frame traffic corridor, and belongs to the technical field of building corridor construction. The method of the present invention is to set up a temporary bracket, decompose the installation unit into a part that can form a basically stable unit structure and a part to be installed later, and after the part that forms a basically stable unit structure is installed, the temporary bracket is unloaded, and the formed self-structure is used as a force support, and the remaining steel beams, roof tie rods and roof supports are installed later, and then the corridor roof purlins are installed, thereby achieving the purpose of reducing the cross-section of temporary bracket materials and the number of temporary brackets, reducing the tonnage of cranes, the cost of hoisting machinery shifts, and reducing the cost of structural installation and construction. The method of the present invention is scientifically and rationally designed, with simple and easy procedures. It does not require a large-tonnage crane and can be installed by an ordinary truck crane, reducing the use fee of hoisting machinery and the fee of temporary support measures, improving the safety of installation and construction, reducing construction costs, and improving construction efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel structure engineering construction, and particularly relates to a structural installation construction method for a steel structure corridor, specifically a structural installation method for a long-distance steel frame traffic corridor. Background Art

[0002] With the continuous development of my country's economy, the number of public buildings, such as large stadiums, is increasing. To facilitate access, traffic corridors are designed between buildings, and steel-frame traffic corridors are a common choice. Currently, the structural installation methods for long-distance steel-frame corridors usually involve ground assembly, unitized hoisting installation, or high-altitude bulk installation using temporary support frames. The unit block hoisting installation method requires the use of large-tonnage hoisting equipment or multiple hoisting equipment for lifting due to the large column spacing and heavy weight of the supporting corridor. It is also necessary to further process the flatness and bearing capacity of the ground where the large-tonnage hoisting equipment walks and the hoisting standing position to meet the safe operation requirements of the large-tonnage hoisting equipment, or safety control measures when multiple machines are lifting. The construction process is cumbersome and the investment cost is high. Conventional temporary support brackets are used for high-altitude bulk installation in sequence. The bracket design needs to meet the requirements of the bearing capacity and stability of the complete unit structure during the construction process. In order to maintain the structural stability of the installation process, the trusses on both sides must always be installed with other components while the hoisting machinery is in place. The hoisting machinery requires many shifts, or temporary stable support settings and tie measures are taken. Construction safety control is difficult and the construction cost is high. In order to solve the above problems, technicians urgently need to develop a new structural installation method for long-distance steel frame corridors. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems of the conventional long-distance steel frame corridor structural construction method, such as complicated construction process and high installation and construction cost, and to provide a new 100-500m long-distance steel frame traffic corridor structural installation method.

[0004] The present invention is achieved through the following technical solutions:

[0005] A method for installing a long-distance steel frame traffic corridor structure comprises dividing the steel frame into six sections. Before installation, the second section of the steel frame is spliced ​​with the third section of the steel frame, and the fourth section of the steel frame is spliced ​​with the fifth section of the steel frame on the ground. During installation, the structure is divided into four installation sections, wherein the first section of the steel frame is the first installation section, the spliced ​​second section of the steel frame is the second installation section, the spliced ​​fourth section of the steel frame is the third installation section, and the sixth section of the steel frame is the fourth installation section. The first to fourth installation sections are sequentially installed using a crane. During the construction and installation process, two steel tube concrete columns are supported at the bottom of the first steel frame, the bottom of the third steel frame, the bottom of the fifth steel frame and the bottom of the sixth steel frame respectively, and two temporary supports are supported below the interface between the first and second steel frames, below the interface between the third and fourth steel frames and below the end of the sixth steel frame respectively; after the overall installation of the steel frame is completed and a stable load-bearing structure system is formed, the temporary supports will be unloaded, and then the remaining upper and lower chord steel beams and roof purlins will be installed.

[0006] Furthermore, the structure of the steel frame includes longitudinal left and right truss beams and transverse upper and lower chord steel beams, the upper chord steel beam is connected between the tops of the left and right truss beams, and the lower chord steel beam is connected between the bottoms of the left and right truss beams.

[0007] Furthermore, a spherical support is provided at the top of the steel tube concrete column, and the spherical support is supported on the bottom of the corresponding truss beam.

[0008] Furthermore, the foundation of the temporary support is compacted by backfilling with plain soil, the bearing capacity of the foundation is 8t / ㎡, and a 600mm thick concrete pedestal foundation is cast with C30 concrete. The area of ​​the pedestal foundation is 3m×4m, and embedded parts are buried in the pedestal foundation. The temporary support is designed as a lattice support frame, which is made of hot-rolled H-shaped steel. Its columns, horizontal braces and diagonal braces are all made of H-shaped steel H294×200×8×12, made of Q355B, and connected by welded nodes. The cross-sectional size of the temporary support is 2.2m×2.2m, and a distance of 0.4m is left at the top of the temporary support for supporting the jack. The design load of the jack is 800KN, and the jack is supported at the bottom of the corresponding truss beam.

[0009] Furthermore, in the above-mentioned method for installing the structure of a long-distance steel frame traffic corridor, the installation construction of the first installation section to the fourth installation section is sequentially performed by a crane, specifically comprising the following steps:

[0010] 1) According to the measured positions, eight concrete-filled steel tube columns were constructed and installed;

[0011] 2) Construction of the first installation section

[0012] S1. Based on the measured placement, use a mobile crane to install two sets of temporary supports below the interface between the first and second steel frames.

[0013] S2. The left truss girder of the first steel frame section is the left truss girder of the first installation section, and the right truss girder of the first steel frame section is the right truss girder of the first installation section. Use two truck cranes to hoist the left and right truss girders of the first installation section, respectively, and place them on the corresponding concrete-filled steel tube columns and temporary supports according to the measured control lines.

[0014] S3. Hoisting the first installation section of the left and right truss beams of the two car cranes do not loosen the hook, the first installation section of the left and right truss beams stable, and then use another car crane to install the first installation section of the left truss beam and the first installation section of the right truss beam between the ends of the upper and lower chord steel beams;

[0015] 3) Construction of the second installation section

[0016] S1. Based on the measured placement positions, use a mobile crane to install two sets of temporary supports below the interface between the third and fourth steel frames.

[0017] S2. The second and third steel frames are joined horizontally on the ground. The left truss girder of the second and third steel frames together constitutes the left truss girder of the second installation section. The right truss girder of the second and third steel frames together constitutes the right truss girder of the second installation section. Two truck cranes are used to respectively hoist the left and right truss girder of the second installation section. They are positioned on the corresponding concrete-filled steel tube columns and temporary supports according to the measured control lines. The left truss girder of the second installation section is welded to the left truss girder of the first installation section, and the right truss girder of the second installation section is welded to the right truss girder of the first installation section.

[0018] S3. Hoist the left and right truss beams of the second installation section with two truck cranes without loosening the hooks. Stabilize the left and right truss beams of the second installation section. Then, use another truck crane to install the upper and lower chord steel beams between the ends and the middle of the left and right truss beams of the second installation section.

[0019] 4) Construction of the third installation section

[0020] S1. Splice the fourth and fifth steel frames horizontally on the ground. The left truss girder of the fourth and fifth steel frames together constitutes the left truss girder of the third installation section. The right truss girder of the fourth and fifth steel frames together constitutes the right truss girder of the third installation section. Use two truck cranes to hoist the left and right truss girders of the third installation section, respectively. Position them on the corresponding concrete-filled steel tube columns and temporary supports according to the measured control lines. Splice and weld the left truss girder of the third installation section to the left truss girder of the second installation section. Splice and weld the right truss girder of the third installation section to the right truss girder of the second installation section.

[0021] S2. Using two mobile cranes, hold the hooks firmly fixed to the left and right truss girders of the third installation section. Then, use another mobile crane to install the upper and lower chord steel beams between the ends and center of the left and right truss girders of the third installation section.

[0022] 5) Construction of the fourth installation section

[0023] S1. Based on the measured placement, use a truck crane to install two sets of temporary supports below the end of the sixth steel frame.

[0024] S2. The left truss girder of the sixth steel frame section is the left truss girder of the fourth installation section, and the right truss girder of the sixth steel frame section is the right truss girder of the fourth installation section. Use two truck cranes to hoist the left and right truss girders of the fourth installation section, respectively. Position them on the corresponding concrete-filled steel tube columns and temporary supports according to the measured control lines. Join and weld the left truss girder of the fourth installation section to the left truss girder of the third installation section, and join and weld the right truss girder of the fourth installation section to the right truss girder of the third installation section.

[0025] S3. The two mobile cranes hoisting the left and right truss girders of the fourth installation section hold their hooks firmly in place until they are stabilized. Then, another mobile crane is used to install the upper and lower chord steel beams between the middle and rear ends of the left and right truss girders of the fourth installation section, ultimately forming a stable load-bearing structural system.

[0026] 6) Temporary support unloading construction

[0027] The two temporary supports on the same transverse axis are unloaded simultaneously, and all three sets of temporary supports are removed;

[0028] 7) Complete and install the remaining upper and lower chord steel beams in sequence;

[0029] 8) Install roof purlins in sequence;

[0030] 9) After all loads are applied, the reinforcement of the spherical bearing on the CFST column is removed and the spherical bearing enters the functional state.

[0031] The method of the present invention is to set up a temporary support, hoist and install it to form a basically stable structural system, then unload the temporary support, use the formed self-structure as a force support, add the remaining steel beams, roof tie rods and roof supports, and then install the corridor roof purlins, thereby achieving the purpose of reducing the tonnage of the crane and the machine-shift cost as well as lowering the installation and construction cost of the structure.

[0032] The construction and installation method of the present invention is scientifically and rationally designed, with simple and easy procedures. It does not require a large-tonnage crane and can be installed by an ordinary truck crane. At the same time, it reduces the number of lifting machine hours, greatly reduces construction costs, and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings herein are used to provide further illustration of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their description are used to explain the present invention and do not constitute improper limitations on the present invention.

[0034] Figure 1 This is the main view of the long-distance steel frame traffic corridor structure of the present invention.

[0035] Figure 2 It is a left view of the long-distance steel frame traffic corridor structure of the present invention.

[0036] Figure 3 This is a schematic diagram of the construction of the long-distance steel frame traffic corridor structure of the present invention in sections and installation sections.

[0037] In the figure: 1-first steel frame section, 2-second steel frame section, 3-third steel frame section, 4-fourth steel frame section, 5-fifth steel frame section, 6-sixth steel frame section, 7-first installation section, 8-second installation section, 9-third installation section, 10-fourth installation section, 11-steel frame, 12-left truss beam, 13-right truss beam, 14-upper chord steel beam, 15-lower chord steel beam, 16-steel tube concrete column, 17-temporary support, 18-concrete cap foundation, 19-jack. DETAILED DESCRIPTION

[0038] In order to make those skilled in the art better understand the present invention, the present invention is further clearly and completely described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless there is a conflict, the features in the embodiments and examples of this application can be combined with each other.

[0039] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] like Figure 1 and Figure 2 As shown, the corridor structure connecting the North and South Exhibition Halls of a certain international convention and exhibition center is a steel frame a. The longitudinal axis length of the corridor structure is 110.25m, the transverse axis width is 27m, and the longitudinal span of the corridor structure is 7.3m+40m+40m+11.4m+16.4m. The steel frame 11 that constitutes the corridor structure is composed of longitudinal left and right truss beams 12, 13, transverse upper and lower chord steel beams 14, 15, and roof purlins. The elevation of the lower beam top is 8.15m, the elevation of the upper beam is 13.7m, and the structural slope is 5%. Among them, the upper chord steel beam 14 is connected between the tops of the left and right truss beams 12, 13, and the lower chord steel beam 15 is connected between the bottoms of the left and right truss beams 12, 13.

[0042] During installation, the steel frame a is divided into six sections, such as Figure 3 As shown; before installation, the second steel frame 2 and the third steel frame 3, the fourth steel frame 4 and the fifth steel frame 5 are spliced ​​on the ground respectively; during installation, it is divided into four installation sections, the first steel frame 1 is the first installation section 7, the spliced ​​second steel frame 2 and the third steel frame 3 are the second installation section 8, the spliced ​​fourth steel frame 4 and the fifth steel frame 5 are the third installation section 9, and the sixth steel frame 6 is the fourth installation section 10, as shown Figure 3 As shown; the installation construction of the first installation section 7 to the fourth installation section 10 is carried out in sequence by a crane, which specifically includes the following steps:

[0043] 1) First, eight concrete-filled steel tube columns 16 are constructed and installed according to the measured positions. A spherical bearing for supporting the steel frame 11 structure is installed on the top of each concrete-filled steel tube column 16, and a reinforcement piece is set on the spherical bearing.

[0044] 2) Construction of the first installation section 7

[0045] S1. According to the measured position, the use of a car crane to install the first section of the steel frame 1 and the second section of the steel frame 2 below the interface of two sets of temporary brackets 17;

[0046] The foundation of the temporary support 17 is backfilled and compacted with plain soil, and the bearing capacity of the foundation is 8t / ㎡. C30 concrete is used to cast a 600mm thick concrete cap foundation 18. The area of ​​the concrete cap foundation is 3m×4m, and embedded parts are buried in the concrete cap foundation. The temporary support 17 is designed as a lattice support frame and is made of hot-rolled H-shaped steel. Its columns, horizontal braces, and diagonal braces are all made of H-shaped steel H294×200×8×12, made of Q355B, and connected by welded nodes. The cross-sectional dimensions of the temporary support 17 are 2.2m×2.2m, and the height is 6.95m. A distance of 0.4m is left at the top of the temporary support 17 for supporting the jack 19. The design load of the jack 19 is 800KN, and the jack 19 is used to support the steel frame 11 structure.

[0047] By measuring and laying out the installation positioning line of the temporary support 17 on the concrete cap foundation 18, the temporary support 17 is installed by using a car crane to control the accurate positioning, firm fixation and verticality of the temporary support 17 to meet the requirements;

[0048] S2. The left truss girder 12 of the first steel frame section 1 is the left truss girder 12 of the first installation section 7, and the right truss girder 13 of the first steel frame section 1 is the right truss girder 13 of the first installation section 7. Two 200-ton truck cranes were used to hoist the left truss girder 12 and the right truss girder 13 of the first installation section 7, respectively. Each crane had a controlled swing radius of 12m, a boom out of 34.8m, a rated load of 48t, and a truss weight of 39.5t. The cranes were then positioned on the corresponding concrete-filled steel tube columns 16 and temporary supports 17 according to the measured control lines.

[0049] S3. Hold the two truck cranes that hoist the left and right truss beams 12 and 13 of the first installation section 7 firmly in place. Then, use a 100-ton truck crane to install the upper and lower chord steel beams 14 and 15 between the ends of the left and right truss beams 12 and 13 of the first installation section 7.

[0050] 3) Construction of the second installation section 8

[0051] S1. According to the measured position, the use of a car crane to install the two sets of temporary brackets 17 below the interface between the third section steel frame 3 and the fourth section steel frame 4;

[0052] S2. The second steel frame section 2 and the third steel frame section 3 are joined on the ground using the horizontal splicing method. The left truss beam 12 of the second steel frame section 2 and the left truss beam 12 of the third steel frame section 3 together form the left truss beam 12 of the second installation section 8. The right truss beam 13 of the second steel frame section 2 and the right truss beam 13 of the third steel frame section 3 together form the right truss beam 13 of the second installation section 8. Two 200t truck cranes are used to respectively hoist the left truss beam 12 of the second installation section 8 and the right truss beam 13 of the second installation section 8. After turning over with a twin-tire crane, they are slowly lifted and seated on the corresponding steel tube concrete columns 16 and temporary supports 17 according to the measured control lines. The left truss beam 12 of the second installation section 8 is spliced ​​and welded to the left truss beam 12 of the first installation section 7. The right truss beam 13 of the second installation section 8 is spliced ​​and welded to the right truss beam 13 of the first installation section 7.

[0053] S3. Use two truck cranes to hoist the left and right truss beams 12 and 13 of the second installation section 8. Hold the hooks firmly in place to stabilize the left and right truss beams 12 and 13. Then, use a 100-ton truck crane to install the upper and lower chord steel beams 14 and 15 located between the ends and the middle of the left and right truss beams 12 and 13 of the second installation section 8.

[0054] 4) Construction of the third installation section 9

[0055] S1. The fourth steel frame section 4 and the fifth steel frame section 5 are joined horizontally on the ground. The left truss beam 12 of the fourth steel frame section 4 and the left truss beam 12 of the fifth steel frame section 5 together form the left truss beam 12 of the third installation section 9. The right truss beam 13 of the fourth steel frame section 4 and the right truss beam 13 of the fifth steel frame section 5 together form the right truss beam 13 of the third installation section 9. Two 200t truck cranes are used to respectively hoist the left truss beam 12 and the right truss beam 13 of the third installation section 9. After turning over with a twin-tire crane, they are slowly lifted and positioned on the corresponding concrete-filled steel tube columns 16 and temporary supports 17 according to the measured control lines. The left truss beam 12 of the third installation section 9 is joined and welded to the left truss beam 12 of the second installation section 8. The right truss beam 13 of the third installation section 9 is joined and welded to the right truss beam 13 of the second installation section 8.

[0056] S2. Use two truck cranes to hoist the left and right truss beams 12 and 13 of the third installation section 9. Hold the hooks firmly in place until the left and right truss beams 12 and 13 of the third installation section 9 are stabilized. Then, use a 100-ton truck crane to install the upper and lower chord steel beams 14 and 15 located between the ends and the middle of the left and right truss beams 12 and 13 of the third installation section 9.

[0057] 5) Construction of the fourth installation section 10

[0058] S1. According to the measured position, the use of a car crane to install the two sets of temporary brackets 17 located below the end of the sixth section steel frame 6;

[0059] S2. The left truss girder 12 of the sixth steel frame section 6 is the left truss girder 12 of the fourth installation section 10, and the right truss girder 13 of the sixth steel frame section 6 is the right truss girder 13 of the fourth installation section 10. Two 200-ton truck cranes are used to hoist the left truss girder 12 and right truss girder 13 of the fourth installation section 10, respectively. After turning over with a twin-tire crane, they are slowly lifted and positioned on the corresponding concrete-filled steel tube columns 16 and temporary supports 17 according to the measured control lines. The left truss girder 12 of the fourth installation section 10 is welded to the left truss girder 12 of the third installation section 9, and the right truss girder 13 of the fourth installation section 10 is welded to the right truss girder 13 of the third installation section 9.

[0060] S3. The two truck cranes that hoist the left and right truss beams 12 and 13 of the fourth installation section 10 do not release the hooks to stabilize the left and right truss beams 12 and 13 of the fourth installation section 10. Then, a 100-ton truck crane is used to install the upper and lower chord steel beams 14 and 15 located between the middle and rear ends of the left truss beam 12 and the right truss beam 13 of the fourth installation section 10, ultimately forming a stable load-bearing structural system.

[0061] 6) Temporary support 17 unloading construction

[0062] The two temporary supports 17 on the same transverse axis are unloaded simultaneously, and all three groups of temporary supports 17 are removed.

[0063] 7) Complete and install the remaining upper and lower chord steel beams 14 and 15 in sequence.

[0064] 8) Install the roof purlins one by one.

[0065] 9) After the load loading is completed, the reinforcement of the spherical bearing on the steel tube concrete column 16 is removed, and the spherical bearing enters the functional state.

[0066] The above embodiment merely represents one embodiment of the present invention. While the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and such modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A method for installing a long-distance steel frame traffic corridor structure, characterized by: The steel frame is divided into six sections. Before installation, the second steel frame and the third steel frame, the fourth steel frame and the fifth steel frame are spliced ​​on the ground respectively. During installation, it is divided into four installation sections. The first steel frame is the first installation section, the spliced ​​second steel frame and the third steel frame are the second installation section, the spliced ​​fourth steel frame and the fifth steel frame are the third installation section, and the sixth steel frame is the fourth installation section. The installation construction of the first to fourth installation sections is carried out in sequence by a crane. During the installation process, two steel tube concrete columns are supported at the bottom of the first steel frame, the bottom of the third steel frame, the bottom of the fifth steel frame and the bottom of the sixth steel frame respectively. Two temporary supports are supported below the interface between the first steel frame and the second steel frame, below the interface between the third steel frame and the fourth steel frame, and below the end of the sixth steel frame respectively. After the overall installation of the steel frame is completed and a stable load-bearing structure system is formed, the temporary supports are unloaded, and then the remaining upper and lower chord steel beams and roof purlins are installed. The installation of the first to fourth installation sections is carried out in sequence by a crane, including the following steps: 1) According to the measured positions, eight concrete-filled steel tube columns were constructed and installed; 2) Construction of the first installation section S1. Based on the measured placement, use a mobile crane to install two sets of temporary supports below the interface between the first and second steel frames. S2. The left truss girder of the first steel frame section is the left truss girder of the first installation section, and the right truss girder of the first steel frame section is the right truss girder of the first installation section. Use two truck cranes to hoist the left and right truss girders of the first installation section, respectively, and place them on the corresponding concrete-filled steel tube columns and temporary supports according to the measured control lines. S3. Hoisting the first installation section of the left and right truss beams of the two car cranes do not loosen the hook, the first installation section of the left and right truss beams stable, and then use another car crane to install the first installation section of the left truss beam and the first installation section of the right truss beam between the ends of the upper and lower chord steel beams; 3) Construction of the second installation section S1. Based on the measured placement positions, use a mobile crane to install two sets of temporary supports below the interface between the third and fourth steel frames. S2. The second and third steel frames are joined horizontally on the ground. The left truss girder of the second and third steel frames together constitutes the left truss girder of the second installation section. The right truss girder of the second and third steel frames together constitutes the right truss girder of the second installation section. Two truck cranes are used to hoist the left and right truss girders of the second installation section, respectively. They are positioned on the corresponding concrete-filled steel tube columns and temporary supports according to the measured control lines. The left truss girder of the second installation section is welded to the left truss girder of the first installation section, and the right truss girder of the second installation section is welded to the right truss girder of the first installation section. S3. Hoist the left and right truss beams of the second installation section with two truck cranes without loosening the hooks. Stabilize the left and right truss beams of the second installation section. Then, use another truck crane to install the upper and lower chord steel beams between the ends and the middle of the left and right truss beams of the second installation section. 4) Construction of the third installation section S1. Splice the fourth and fifth steel frames horizontally on the ground. The left truss girder of the fourth and fifth steel frames together constitutes the left truss girder of the third installation section. The right truss girder of the fourth and fifth steel frames together constitutes the right truss girder of the third installation section. Use two truck cranes to hoist the left and right truss girders of the third installation section, respectively. Position them on the corresponding concrete-filled steel tube columns and temporary supports according to the measured control lines. Splice and weld the left truss girder of the third installation section to the left truss girder of the second installation section. Splice and weld the right truss girder of the third installation section to the right truss girder of the second installation section. S2. Using two mobile cranes, hold the hooks firmly fixed to the left and right truss girders of the third installation section. Then, use another mobile crane to install the upper and lower chord steel beams between the ends and center of the left and right truss girders of the third installation section. 5) Construction of the fourth installation section S1. Based on the measured placement, use a truck crane to install two sets of temporary supports below the end of the sixth steel frame. S2. The left truss girder of the sixth steel frame section is the left truss girder of the fourth installation section, and the right truss girder of the sixth steel frame section is the right truss girder of the fourth installation section. Use two truck cranes to hoist the left and right truss girders of the fourth installation section, respectively. Position them on the corresponding concrete-filled steel tube columns and temporary supports according to the measured control lines. Join and weld the left truss girder of the fourth installation section to the left truss girder of the third installation section, and join and weld the right truss girder of the fourth installation section to the right truss girder of the third installation section. S3. The two mobile cranes hoisting the left and right truss girders of the fourth installation section hold their hooks firmly in place until they are stabilized. Then, another mobile crane is used to install the upper and lower chord steel beams between the middle and rear ends of the left and right truss girders of the fourth installation section, ultimately forming a stable load-bearing structural system. 6) Temporary support unloading construction The two temporary supports on the same transverse axis are unloaded simultaneously, and all three sets of temporary supports are removed; 7) Complete and install the remaining upper and lower chord steel beams in sequence; 8) Install roof purlins in sequence; 9) After all loads are applied, the reinforcement of the spherical bearing on the CFST column is removed and the spherical bearing enters the functional state.

2. The method for installing a long-distance steel frame traffic corridor according to claim 1, characterized in that: The structure of the steel frame includes longitudinal left and right truss beams and transverse upper and lower chord steel beams. The upper chord steel beam is connected between the tops of the left and right truss beams, and the lower chord steel beam is connected between the bottoms of the left and right truss beams.

3. The method for installing a long-distance steel frame traffic corridor according to claim 2, characterized in that: A spherical bearing is provided at the top of the steel tube concrete column, and the spherical bearing is supported on the bottom of the corresponding truss beam.

4. The method for installing a long-distance steel frame traffic corridor according to claim 3 is characterized in that: The foundation of the temporary support is compacted by backfilling with plain soil, the bearing capacity of the foundation is 8t / ㎡, and a 600mm thick concrete pedestal foundation is cast with C30 concrete. The area of ​​the pedestal foundation is 3m×4m, and embedded parts are buried in the pedestal foundation. The temporary support is designed as a lattice support frame, which is made of hot-rolled H-shaped steel. Its columns, horizontal braces and diagonal braces are all made of H-shaped steel H294×200×8×12, made of Q355B, and connected by welded nodes. The cross-sectional size of the temporary support is 2.2m×2.2m. A distance of 0.4m is left at the top of the temporary support for supporting the jack. The design load of the jack is 800KN, and the jack is supported at the bottom of the corresponding truss beam.

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