Construction method of narrow special-shaped space steel corridor based on finite element simulation analysis

Abstract

The invention relates to a construction method for a narrow special-shaped space steel corridor based on finite element simulation analysis. The construction method comprises the following steps that S1, a construction platform is built in MIDAS software; s2, importing the design structure of the steel corridor into MIDAS software, generating a three-dimensional entity, assembling the three-dimensional entity on a construction platform, and constructing a construction simulation model of the steel corridor; s3, segmented finite element simulation analysis is carried out through a finite element simulation analysis module in the MIDAS software, and then analog simulation is carried out till the standard requirement is met; a scheme meeting the standard requirement is selected, and a reasonable construction structure and construction steps are obtained through the analysis module; s4, exporting construction simulation model data of the steel corridor through MIDAS software, and generating a part drawing and construction steps; and S5, assembling and constructing according to specific construction steps. Through finite element simulation analysis and based on existing hoisting equipment, the whole hoisting process is more flexible, operation errors are reduced, time consumption is reduced, the site construction speed is higher, and power is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering steel structure beam construction, and in particular to a construction method of a narrow and irregular space steel corridor based on finite element simulation analysis. Background Art

[0002] The steel structure corridor in narrow terrain is an overhead structure and an important component of the building system. However, in some corridor projects, the total weight of the steel corridor is relatively large, resulting in a single steel beam being too heavy and beyond the conventional lifting range of the tower crane, making the construction of the steel corridor difficult. If a larger tower crane is used, the production cost will increase. The span of the steel beam is relatively long, and the deflection at the mid-span of the steel corridor is relatively large due to its own weight. There are certain safety risks during the construction process. At the same time, the terrain where the steel structure beam is located is restricted, with uneven steps, making it inconvenient to support. Summary of the Invention

[0003] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide a construction method for narrow and irregular space steel corridors based on finite element simulation analysis. While ensuring construction efficiency, the components of the steel corridor are unloaded one by one through supporting cradles and suspended connecting devices to prevent excessive deflection in the mid-span and ensure the safety of the steel structure corridor construction. When facing undulating terrain, supporting cradles of different heights can be used to support the main beams, thereby effectively coping with terrain problems.

[0004] The present invention is achieved by taking the following technical solutions: The construction method of the narrow and irregular space steel corridor based on finite element simulation analysis is as follows: S1: In MIDAS software, build a construction platform according to the actual size and shape of the narrow and irregular space; S2: Import the designed structure of the steel corridor into MIDAS software to generate a 3D entity. The 3D entity is assembled on the construction platform to form the construction structure of the narrow and irregular space steel corridor. A construction simulation model of the steel corridor is constructed in MIDAS software. S3: In MIDAS software, the finite element simulation analysis module uses industry construction standard data, material property libraries, and stress analysis units to conduct segmented finite element simulation analysis in the steel corridor construction simulation model. The analysis identifies materials, structures, and dimensions that do not meet the standard requirements in the original design, and proposes multiple feasible solutions. Simulations are then repeated until the standard requirements are met. The solution that meets the standard requirements is selected, and the cost analysis module is then used to determine a reasonable construction structure and construction steps. S4: Export the construction simulation model data of the steel corridor through MIDAS software to generate each component drawing and specific construction steps; S5: Process the construction structure according to the parts drawing, assemble the construction structure according to the specific construction steps, and then carry out the concrete pouring and construction of the narrow and special-shaped space steel corridor.

[0005] Furthermore, the construction structure of the narrow and special-shaped space steel corridor includes a main beam, a supporting frame, a suspended connection device, a longitudinal beam, a secondary beam and a steel truss floor deck; the main beam includes a bottom main beam and a top main beam; the suspended connection device includes a horizontal connection device, a vertical connection I-beam and a connection embedded part set on the building wall; the bottom main beam is hoisted to the designed height, the horizontal connection devices at both ends of the bottom main beam are horizontally fixed to the connection embedded parts, and the horizontal connection device is fixed to the bottom main beam through the vertical connection I-beam; after a group of bottom main beams are fixed to the designed height through the suspended connection device, the bottom optimal support points of a group of bottom main beams are supported by the supporting frame respectively; then the longitudinal beams between a group of bottom main beams are installed, and the transverse secondary beams are installed between adjacent longitudinal beams; after the secondary beams are installed, Cross tie rods are installed between the longitudinal beams at both ends of the main beam, and then the steel truss floor decking is laid and installed on the longitudinal beams and secondary beams, and edge plates are set between the steel truss floor decking and the bottom main beam, and then concrete is poured on the steel truss floor decking; after the concrete on the bottom main beam reaches the strength, vertical support rods and diagonal support rods are installed on the upper surface of the bottom main beam. After the installation is completed, a group of top main beams are hoisted onto the vertical support rods for support, and the top main beams are connected and installed with the vertical support rods. After the installation is completed, the longitudinal beams, secondary beams and cross tie rods are installed on a group of top main beams. After the construction is completed, the steel truss floor decking is laid and installed on the longitudinal beams and secondary beams on the top main beam, and edge plates are set between the steel truss floor decking and the top main beam, and then concrete is poured on the steel truss floor decking of the top main beam.

[0006] Furthermore, the horizontal connecting device includes a suspended connecting plate, a horizontal I-beam, a diagonal I-beam and a connecting steel plate; one end of the horizontal I-beam is vertically welded and fixed to the side of the suspended connecting plate, and the side of the other end is respectively fixed with a diagonal I-beam and a vertically downward connecting steel plate; the other end of the diagonal I-beam is welded to the side of another suspended connecting plate; the connecting steel plate is fixed to the bottom main beam through the vertical connecting I-beam.

[0007] Furthermore, the connecting embedded parts include embedded screws, embedded load-bearing rods and embedded steel plates; the embedded steel plates, vertical connecting I-beams, suspended connecting plates and connecting steel plates are all provided with connecting holes; one side of the embedded steel plate is provided with embedded load-bearing rods and embedded screws, and the other side of the embedded steel plate is connected and fixed to the suspended connecting plate; a group of connecting embedded parts are respectively connected and fixed to the horizontal I-beams and the suspended connecting plates on the diagonal I-beams of the horizontal connecting device through the embedded steel plates; the embedded screws are fixed through the connecting holes of the embedded steel plates and the suspended connecting plates by nut assemblies; the connecting steel plates and the vertical connecting I-beams are connected and fixed by bolt assemblies passing through the connecting holes.

[0008] Furthermore, the main beam is divided into three sections according to finite element simulation analysis and the allowable lifting weight range of the tower crane, namely the two end parts of the main beam and the middle part of the main beam; when the bottom main beam is hoisted, the two end parts of the bottom main beam are hoisted first and fixedly connected to the suspended connection device; then the middle part of the bottom main beam is hoisted and fixedly connected to the two end parts of the bottom main beam on both sides; then the supporting frame is set at the bottom of the connection between the middle part of the bottom main beam and the two end parts of the bottom main beam on both sides; when the top main beam is hoisted, it is hoisted by passing the steel cable through the lifting holes set on the two end parts of the top main beam, and then the middle part of the top main beam is hoisted and fixedly connected to the two end parts of the top main beam on both sides.

[0009] Furthermore, scissor braces are provided between the vertical support rods provided at both ends of the bottom main beam; and the oblique support rods are formed into a W shape after installation.

[0010] Furthermore, the support tire frame includes a U-shaped support member, a support upright, an operating table, a lower support plate, an anti-slip base plate, a ladder, an entrance and exit, a cover plate and an upper support plate; a U-shaped support member for supporting the main beam is fixed on the upper surface of the support upright, the side surface of the support upright is supported by the upper support plate on the operating table fixed to the circumferential surface of the support upright, and the lower end of the support upright is fixed with the anti-slip base plate through the lower support plate; an entrance and exit is provided on the operating table, and a cover plate is provided above the entrance and exit; a ladder in the vertical direction corresponding to the entrance and exit is also provided on the support upright.

[0011] Furthermore, the outer surface of the vertical support rod is provided with a glass curtain wall embedded part for installing the glass curtain wall.

[0012] Furthermore, after the concrete pouring on the bottom main beam and the top main beam is completed, the connection holes on the horizontal I-beam of the bottom main beam are connected through a construction safety rope, which is used to hang the safety belts worn by construction workers when painting and installing the glass curtain wall.

[0013] Furthermore, after the construction of the narrow and irregular space steel corridor is completed, the steel cables, construction safety cables, horizontal connection devices, vertical connection I-beams and supporting frames are removed and recycled.

[0014] In summary, the present invention has the following beneficial effects: the present invention uses MIDAS software to perform modeling and finite element simulation analysis, and then uses a support frame and a suspended connection device to unload the components of the steel corridor one by one, preventing excessive deflection in the mid-span, and making full use of existing lifting equipment. Moreover, the support frame can be set according to the construction terrain, which not only ensures the safety of the construction of the narrow and irregular space steel corridor, but also ensures the economy and efficiency of the construction, realizes the optimization of the construction process, can reduce the later high-altitude welding work, reduce the construction safety risk, shorten the construction period, and reduce the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall construction structure of the present invention (in order to clearly express the structure, the bottom main beam is laid with a steel truss floor deck, the top main beam is not laid with a steel truss floor deck, and no concrete is poured).

[0016] Figure 2 It is a schematic diagram of the construction structure of the bottom main beam of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the suspended connection device of the present invention.

[0018] Figure 4 This is a schematic diagram of the vertically connected I-beam structure of the present invention.

[0019] Figure 5 It is a schematic structural diagram of the connection embedded part of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the horizontal connection device of the present invention.

[0021] Figure 7 It is a schematic structural diagram of the supporting tire frame (including the protective cage) of the present invention.

[0022] Figure 8 This is a schematic structural diagram of the tire support frame (protective cage not shown) of the present invention.

[0023] Figure 9 This is a schematic diagram of the local structure of the glass curtain wall embedded parts installation of the present invention.

[0024] in: Main beam 1; Support frame 2; U-shaped support member 21; support pole 22; operating table 23; lower support plate 24; anti-slip bottom plate 25; ladder 26; entrance and exit 27; cover plate 28; upper support plate 29; Suspension connection device 3; horizontal connection device 31; vertical connection I-beam 32; connection embedded part 33; suspension connection plate 311; connection hole 312; horizontal I-beam 313; diagonal I-beam 314; connection steel plate 315; embedded screw 331; embedded load-bearing rod 332; embedded steel plate 333; Longitudinal beam 4; secondary beam 5; cross tie rod 6; steel truss floor deck 7; edge plate 8; scissors brace 9; vertical support rod 10; diagonal support rod 11; steel cable 12; construction safety cable 13; glass curtain wall embedded parts 14. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] like Figures 1 to 9 As shown, the present invention provides a construction method for a narrow and irregular space steel corridor based on finite element simulation analysis, the steps are as follows: S1: In MIDAS software, build a construction platform according to the actual size and shape of the narrow and irregular space; S2: Import the designed structure of the steel corridor into MIDAS software to generate a 3D entity. The 3D entity is assembled on the construction platform to form the construction structure of the narrow and irregular space steel corridor. A construction simulation model of the steel corridor is constructed in MIDAS software. S3: In MIDAS software, the finite element simulation analysis module uses industry construction standard data, material property libraries, and stress analysis units to conduct segmented finite element simulation analysis in the steel corridor construction simulation model. The analysis identifies materials, structures, and dimensions that do not meet the standard requirements in the original design, and proposes multiple feasible solutions. Simulations are then repeated until the standard requirements are met. The solution that meets the standard requirements is selected, and the cost analysis module is then used to determine a reasonable construction structure and construction steps. S4: Export the construction simulation model data of the steel corridor through MIDAS software to generate each component drawing and specific construction steps; S5: Process the construction structure according to the parts drawing, assemble the construction structure according to the specific construction steps, and then carry out the concrete pouring and construction of the narrow and special-shaped space steel corridor.

[0027] As a preferred embodiment: Figures 1 to 6As shown, the construction structure of the narrow and irregular space steel corridor includes a main beam 1, a supporting frame 2, a suspended connecting device 3, a longitudinal beam 4, a secondary beam 5 and a steel truss floor deck 7; the main beam 1 includes a bottom main beam and a top main beam; the suspended connecting device 3 includes a horizontal connecting device 31, a vertical connecting I-beam 32 and a connecting embedded part 33 set on the building wall; the bottom main beam is hoisted to the designed height, the horizontal connecting devices 31 at both ends of the bottom main beam are horizontally fixed to the connecting embedded parts 33, and the horizontal connecting device 31 is connected to the vertical connecting device 31. The connecting I-beam 32 is fixed to the bottom main beam; after a group of bottom main beams are fixed to the designed height through the suspended connection device 3, the bottom optimal support point of a group of bottom main beams is supported by the support tire frame 2; then the longitudinal beams 4 between a group of bottom main beams are installed, and the transverse secondary beams 5 are installed between the adjacent longitudinal beams 4; after the secondary beams 5 are installed, the cross tie rods 6 are installed between the longitudinal beams 4 at both ends of a group of bottom main beams, and then the steel truss floor deck 7 is laid and installed on the longitudinal beams 4 and the secondary beams 5, and the steel truss floor deck is installed on the steel truss floor deck. A trim plate 8 is set between the plate 7 and the bottom main beam. The trim plate 8 adopts an L-shaped trim plate. The trim plate 8 is welded to the steel truss on the steel truss floor deck 7, and then concrete is poured on the steel truss floor deck 7. Before installing the steel truss floor deck 7, a reference line is set at both ends of the steel truss floor deck 7. The distance from the edge of the main beam flange is the lap length of the steel truss floor deck 7 on the steel beam required by the design to ensure the support stability. After the concrete on the bottom main beam reaches the strength, the vertical support rods 10 and the oblique support rods are installed on the upper surface of the bottom main beam. After the installation of the support rod 11 is completed, a group of top main beams are hoisted onto the vertical support rod 10 for support, and the top main beams are connected and installed with the vertical support rod 10. After the installation is completed, the longitudinal beams 4, secondary beams 5 and cross tie rods 6 are installed on a group of top main beams. After the construction is completed, the steel truss floor decking 7 is laid and installed on the longitudinal beams 4 and secondary beams 5 on the top main beams, and the edge plates 8 are set between the steel truss floor decking 7 and the top main beams, and then concrete is poured on the steel truss floor decking 7 of the top main beam. Modeling was performed using MIDAS software, and finite element simulation analysis was carried out. Then, the components of the steel corridor were unloaded one by one through the support frame 2 and the suspended connection device 3 to prevent excessive deflection in the mid-span and make full use of the existing lifting equipment. In addition, the support frame 2 can be set according to the construction terrain, which not only ensures the safety of the construction of the steel corridor in a narrow and irregular space, but also ensures the economy and efficiency of the construction, realizes the optimization of the construction process, reduces the subsequent high-altitude welding work, reduces the construction safety risk, shortens the construction period, and reduces the construction cost.

[0028] As a preferred embodiment, Figure 3 、 Figure 4 and Figure 6As shown, the horizontal connecting device 31 includes a suspended connecting plate 311, a horizontal I-beam 313, a diagonal I-beam 314 and a connecting steel plate 315; one end of the horizontal I-beam 313 is vertically welded and fixed to the side of the suspended connecting plate 311, and the side of the other end is respectively fixed with a diagonal I-beam 314 and a vertically downward connecting steel plate 315; the other end of the diagonal I-beam 314 is welded to the side of another suspended connecting plate 311; the connecting steel plate 315 is fixed to the bottom main beam through the vertical connecting I-beam 32.

[0029] As a preferred embodiment, Figure 3 and Figure 5 As shown, the connecting embedded parts 33 include embedded screws 331, embedded load-bearing rods 332 and embedded steel plates 333; the embedded steel plates 333, the vertical connecting I-beam 32, the suspended connecting plate 311 and the connecting steel plates 315 are all provided with connecting holes 312; one side of the embedded steel plate 333 is provided with embedded load-bearing rods 332 and embedded screws 331, and the other side of the embedded steel plate 333 is connected and fixed to the suspended connecting plate 311; a group of connecting embedded parts 33 are respectively connected and fixed to the horizontal I-beam 313 of the horizontal connecting device 31 and the suspended connecting plate 311 on the diagonal bracing I-beam 314 through the embedded steel plates 333; the embedded screws 331 pass through the connecting holes 312 of the embedded steel plates 333 and the suspended connecting plate 311 and are fixed by a nut assembly; the connecting steel plate 315 and the vertical connecting I-beam 32 are connected and fixed by a bolt assembly passing through the connecting holes 312. Embedded screw rod 331 has a threaded end and a bent portion at the other end. The threaded portion extends outside embedded steel plate 333, where it is connected and fixed to the internal wall reinforcement. Embedded load-bearing rod 332 is welded to embedded steel plate 333 at one end and has a bent portion at the other end. The embedded load-bearing rod 332 is integrally connected to the internal wall reinforcement. The embedded screw rod 331 and embedded load-bearing rod 332 enhance the structural stability of the steel corridor. Connecting embedded parts 33 optimizes the process, reduces later welding work at height, and thus reduces construction safety risks, while also shortening the construction period and lowering construction costs.

[0030] As a preferred embodiment, Figure 1 and Figure 2As shown, the main beam 1 is divided into three sections according to the finite element simulation analysis and the allowable lifting weight range of the tower crane, which are the two end parts of the main beam and the middle part of the main beam; when the bottom main beam is hoisted, the two end parts of the bottom main beam are hoisted first and fixedly connected to the suspended connection device 3; then the middle part of the bottom main beam is hoisted and fixedly connected to the two end parts of the bottom main beam on both sides; then the supporting frame 2 is set at the bottom of the connection between the middle part of the bottom main beam and the two end parts of the bottom main beam on both sides; when the top main beam is hoisted, it is hoisted by passing the steel cable 12 through the lifting holes set on the two end parts of the top main beam, and then the middle part of the top main beam is hoisted and fixedly connected to the two end parts of the top main beam on both sides. By using MIDAS software for finite element simulation analysis, the steel corridor was segmented. The main beam 1 was divided into 3 sections, and the secondary beam was not segmented. The focus was on the rationality, economy, and feasibility of on-site assembly of the segmentation. The steel corridor was hoisted in sections according to the actual situation based on the specifications of the construction team's tower crane. The weight of a single steel beam was constructed within the allowable hoisting weight range of the tower crane, reducing construction costs. At the same time, it also avoided the inconvenience of large tower cranes in narrow spaces, making on-site construction faster and more efficient.

[0031] As a preferred embodiment, a scissors brace 9 is provided between the vertical support rods 10 provided at both ends of the bottom main beam; the oblique support rods 11 are formed into a W shape after installation.

[0032] As a preferred embodiment, Figure 7 and Figure 8 As shown, the support frame 2 includes a U-shaped support member 21, a support pole 22, an operating table 23, a lower support plate 24, an anti-skid bottom plate 25, a ladder 26, an entrance and exit 27, a cover plate 28 and an upper support plate 29; the upper surface of the support pole 22 is fixed with a U-shaped support member 21 for supporting the main beam 1, the side of the support pole 22 is supported by the operating table 23 fixed to the circumferential surface of the support pole 22 through the upper support plate 29, and the lower end of the support pole 22 is fixed with the anti-skid bottom plate 25 through the lower support plate 24; the operating table 23 An entrance 27 is provided on the top, with a cover 28 above it. When opened, the cover 28 facilitates workers' access to and from the operating platform; when closed, it ensures foot safety during construction on the operating platform 23. A ladder 26, perpendicular to the entrance 27, is also provided on the support upright 22, allowing workers to ascend and descend the operating platform 23. The operating platform 23 and the protective cage provided thereon ensure construction safety. The lower support plate 24, anti-skid base plate 25, and upper support plate 29 ensure the stability of the support frame 2. The height of the support frame 2 can be adjusted to suit the construction terrain, and the anti-skid base plate 25 can be adjusted accordingly to the shape of the ground to achieve a stable connection.

[0033] As a preferred embodiment, Figure 9As shown, the outer surface of the vertical support rod 10 is provided with a glass curtain wall embedded part 14 for installing the glass curtain wall.

[0034] As a preferred embodiment, after the concrete pouring on the bottom main beam and the top main beam is completed, the connection hole 312 on the horizontal I-beam 313 of the bottom main beam is connected through the construction safety rope 13, which is used to hang the safety belts worn by the construction workers when they are painting and installing the glass curtain wall.

[0035] As a preferred embodiment, after the construction of the narrow and irregular space steel corridor is completed, the steel cables 12, construction safety cables 13, horizontal connecting devices 31, vertical connecting I-beams 32 and supporting frames 2 are removed and recycled.

[0036] Although the above describes and illustrates the specific embodiments of the present invention in detail, it should be pointed out that: we can make various equivalent changes and modifications to the above embodiments based on the concept of the present invention, and the functional effects produced therefrom still do not exceed the spirit covered by the specification, and should all be within the scope of protection of the present invention.

Claims

1. A construction method for a narrow and irregular-shaped steel corridor based on finite element simulation analysis is characterized by: Here are the steps: S1: In MIDAS software, build a construction platform according to the actual size and shape of the narrow and irregular space; S2: Import the designed structure of the steel corridor into MIDAS software to generate a 3D entity. The 3D entity is assembled on the construction platform to form the construction structure of the narrow and irregular space steel corridor. A construction simulation model of the steel corridor is constructed in MIDAS software. S3: In MIDAS software, the finite element simulation analysis module uses industry construction standard data, material property libraries, and stress analysis units to conduct segmented finite element simulation analysis in the steel corridor construction simulation model. The analysis identifies materials, structures, and dimensions that do not meet the standard requirements in the original design, and proposes multiple feasible solutions. Simulations are then repeated until the standard requirements are met. The solution that meets the standard requirements is selected, and the cost analysis module is then used to determine a reasonable construction structure and construction steps. S4: Export the construction simulation model data of the steel corridor through MIDAS software to generate each component drawing and specific construction steps; S5: Process the construction structure according to the parts drawing, assemble the construction structure according to the specific construction steps, and then carry out the concrete pouring and construction of the narrow and special-shaped space steel corridor.

2. The construction method of a narrow and irregular space steel corridor based on finite element simulation analysis according to claim 1 is characterized by: The construction structure of the narrow and special-shaped space steel corridor includes a main beam, a supporting frame, a suspended connection device, a longitudinal beam, a secondary beam and a steel truss floor deck; the main beam includes a bottom main beam and a top main beam; the suspended connection device includes a horizontal connection device, a vertical connection I-beam and a connection embedded part set on the building wall; the bottom main beam is hoisted to the designed height, the horizontal connection devices at both ends of the bottom main beam are horizontally fixed to the connection embedded parts, and the horizontal connection device is fixed to the bottom main beam through the vertical connection I-beam; after a group of bottom main beams are fixed to the designed height through the suspended connection device, the bottom best support point of a group of bottom main beams is supported by the supporting frame respectively; then the longitudinal beams between a group of bottom main beams are installed, and the horizontal secondary beams are installed between adjacent longitudinal beams; after the secondary beams are installed, Cross tie rods are installed between the longitudinal beams at both ends, and then the steel truss floor decking is laid and installed on the longitudinal beams and secondary beams, and edge plates are set between the steel truss floor decking and the bottom main beams, and then concrete is poured on the steel truss floor decking; after the concrete on the bottom main beam reaches the strength, vertical support rods and diagonal support rods are installed on the upper surface of the bottom main beam. After the installation is completed, a group of top main beams are hoisted onto the vertical support rods for support, and the top main beams are connected and installed with the vertical support rods. After the installation is completed, the longitudinal beams, secondary beams and cross tie rods are installed on a group of top main beams. After the construction is completed, the steel truss floor decking is laid and installed on the longitudinal beams and secondary beams on the top main beams, and edge plates are set between the steel truss floor decking and the top main beams, and then concrete is poured on the steel truss floor decking of the top main beam.

3. The construction method of a narrow and irregular space steel corridor based on finite element simulation analysis according to claim 2 is characterized by: The horizontal connecting device includes a suspended connecting plate, a horizontal I-beam, a diagonal I-beam and a connecting steel plate; one end of the horizontal I-beam is vertically welded and fixed to the side of the suspended connecting plate, and the side of the other end is respectively fixed with a diagonal I-beam and a vertical downward connecting steel plate; the other end of the diagonal I-beam is welded to the side of another suspended connecting plate; the connecting steel plate is fixed to the bottom main beam through the vertical connecting I-beam.

4. The construction method of a narrow and irregular space steel corridor based on finite element simulation analysis according to claim 2 is characterized by: The connecting embedded parts include embedded screws, embedded load-bearing rods and embedded steel plates; the embedded steel plates, vertical connecting I-beams, suspended connecting plates and connecting steel plates are all provided with connecting holes; one side of the embedded steel plate is provided with embedded load-bearing rods and embedded screws, and the other side of the embedded steel plate is connected and fixed to the suspended connecting plate; a group of connecting embedded parts are respectively connected and fixed to the horizontal I-beams and the suspended connecting plates on the diagonal I-beams of the horizontal connecting device through the embedded steel plates; the embedded screws are fixed through the connecting holes of the embedded steel plates and the suspended connecting plates by nut assemblies; the connecting steel plates and the vertical connecting I-beams are connected and fixed by bolt assemblies passing through the connecting holes.

5. The construction method of a narrow and irregular space steel corridor based on finite element simulation analysis according to claim 2 is characterized by: The main beam is divided into three sections according to finite element simulation analysis and the allowable lifting weight range of the tower crane, namely the two end parts of the main beam and the middle part of the main beam; when lifting the bottom main beam, first lift the two end parts of the bottom main beam and fix them to the suspended connection device; then lift the middle part of the bottom main beam and fix them to the two end parts of the bottom main beam on both sides; then set the supporting frame at the bottom of the connection between the middle part of the bottom main beam and the two end parts of the bottom main beam on both sides; when lifting the top main beam, lift it by passing the steel cable through the lifting holes set on the two end parts of the top main beam, and then lift the middle part of the top main beam and fix it to the two end parts of the top main beam on both sides.

6. The construction method of a narrow and irregular space steel corridor based on finite element simulation analysis according to claim 5 is characterized by: Scissor braces are provided between the vertical support rods provided at both ends of the bottom main beam; and the oblique support rods are formed into a W shape after installation.

7. The construction method of a narrow and irregular space steel corridor based on finite element simulation analysis according to claim 2 is characterized by: The support tire frame includes a U-shaped support member, a support upright, an operating table, a lower support plate, an anti-slip base plate, a ladder, an entrance and exit, a cover plate and an upper support plate; a U-shaped support member for supporting the main beam is fixed on the upper surface of the support upright, the side surface of the support upright is supported by the upper support plate on the operating table fixed to the circumferential surface of the support upright, and the lower end of the support upright is fixed with the anti-slip base plate through the lower support plate; an entrance and exit is provided on the operating table, and a cover plate is provided above the entrance and exit; a ladder in the vertical direction corresponding to the entrance and exit is also provided on the support upright.

8. The construction method of a narrow and irregular-shaped steel corridor based on finite element simulation analysis according to claim 2 is characterized by: The outer surface of the vertical support rod is provided with a glass curtain wall embedded part for installing the glass curtain wall.

9. The method for constructing a narrow and irregular-shaped steel corridor based on finite element simulation analysis according to claim 4 is characterized by: After the concrete pouring on the bottom main beam and the top main beam is completed, the connecting holes on the horizontal I-beam of the bottom main beam are connected through the construction safety rope, which is used to hang the safety belts worn by construction workers when painting and installing the glass curtain wall.

10. The construction method of a narrow and irregular-shaped steel corridor based on finite element simulation analysis according to claim 9 is characterized in that: After the construction of the narrow and irregular space steel corridor is completed, the steel cables, construction safety cables, horizontal connection devices, vertical connection I-beams and supporting frames are removed and recycled.

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