Fabricated steel structure building construction method

Abstract

The invention relates to the technical field of building construction, in particular to a fabricated steel structure building construction method. Comprising the following steps that SS01, pre-laying is conducted, specifically, a building construction area is constructed in a building construction site, a concrete carrying surface is poured in the building construction area, after the concrete carrying surface is coagulated and solidified, lines are drawn in the carrying surface for marking, and according to the drawn lines, two side supporting components are erected on the concrete carrying surface firstly; the upper supporting parts are arranged above the two side supporting parts, the metal skin is installed on the outer side of the steel structure after the upper supporting parts are arranged, and then the fabricated steel structure building is formed. The construction structure has the beneficial effects that the arrangement height and the arrangement shape of each profiling supporting module are adjustable, so that the construction structure can stably support skins in different shapes, and the gap amount between the outer skin and the supporting structure is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a method for constructing a prefabricated steel structure building. Background Art

[0002] Steel structure is a structure made of steel materials. It is one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, steel trusses and other components supported by steel sections and steel plates, and adopts silanization, pure manganese phosphating, water washing and drying, galvanizing and other rust removal processes. The components or parts are usually connected by welds, bolts or rivets. Because of its light weight and simple construction, it is widely used in large factories, venues, super high-rise buildings and other fields.

[0003] In the prior art, the patent document with publication number CN117166779A discloses a method for construction of assembled steel structure buildings, which includes the following steps: S10: measuring the dimensions of the construction site, and drawing the site dimension drawings according to the measured values; S20: establishing a construction plane through modeling software according to the drawn site dimension drawings, and establishing a steel structure model on the construction plane; S30: physically splicing and producing the established steel structure models, and grouping and marking them according to the function attributes and installation sequence. The above method provides an assembled structure between the load-bearing seat and the movable connection component by setting an assembly slot and an assembly protrusion, which is convenient for proofreading and installation, and speeds up construction efficiency. However, the above technical solution has the following technical problems when used: 1. The existing construction method cannot effectively reduce the gap between the steel support structure and the external skin, and thus cannot achieve effective support and contour shaping of the external skin of the steel structure; 2. The existing construction method is not convenient for real-time monitoring of the strength, compression and deformation of the building structure; Based on this, the present invention provides a construction method for a prefabricated steel structure building to solve the problems raised in the above background technology. Summary of the invention

[0004] The present invention aims at the technical problems existing in the prior art and provides a construction method for prefabricated steel structure buildings to solve the problems that the existing construction method cannot effectively reduce the gap between the steel support structure and the external skin and then cannot achieve effective support and shaping of the external skin of the steel structure, and the existing construction method is not convenient for real-time monitoring of the force, compression and deformation of the building structure.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a method for constructing a prefabricated steel structure building, comprising the following steps: SS01, pre-layout, build a construction area at the construction site, pour concrete bearing surface in the construction area, after the concrete bearing surface solidifies, draw lines on the bearing surface, and first set up two side support components on the concrete bearing surface according to the lines; SS02, rear layout: after the two side support components are laid out, the upper support components are laid out on the two side support components. After the upper support components are laid out, the metal skin is installed on the outer side of the steel structure to form an assembled steel structure building. The side support component includes two columns, a first scissor-type telescopic mechanism is installed between the opposite surfaces of the two columns, a plurality of positioning auxiliary modules are installed on the surface of the first scissor-type telescopic mechanism, and a movable support is movably installed at the bottom of the two columns; The upper supporting components respectively include two symmetrically arranged telescopic arms, two symmetrically arranged positioning frames and two symmetrically arranged second scissor-type telescopic mechanisms. Telescopic transverse tubes are installed between the relative surfaces of the two telescopic arms and between the relative surfaces of the two positioning frames. A group of telescopic vertical tubes are installed between each telescopic arm and the relative surface of the adjacent positioning frame. Connecting blocks are installed at both ends of each telescopic arm. The surfaces of the four connecting blocks are respectively connected to four columns. The surfaces of the second telescopic mechanism are respectively connected to the connecting blocks and the positioning frames. A group of contoured support modules are installed on the surface of the second scissor-type telescopic mechanism.

[0006] The beneficial effects of the present invention are: 1) When in use, the top shape of the building construction structure is adjustable through the setting of the profiling support module. During construction, when a curved skin or a plate-shaped skin is added to the top of the building construction structure, the internal inflation volume of the profiling support bag in each profiling support module can be adjusted. The layout height and layout shape of each profiling support module are adjustable, so that the construction structure can stably support skins of different shapes and reduce the gap between the external skin and the support structure. By reducing the gap and achieving the profiling effect, the flexibility and stability of the building construction method during construction are effectively improved.

[0007] 2) When in use, the internal air volume of the pressure measuring bag and the contour support bag can be independently adjusted by setting the valve core, and the air pressure probe can be set to monitor the air pressure intensity in the air cavity. Through real-time monitoring of the air pressure intensity, the strength, pressure and deformation of the building structure can be monitored in real time, and then the safety of the building can be monitored in real time.

[0008] 3) When the present invention is used, by adding the positioning auxiliary module, on the one hand, the support area, support temperature and support strength of the building construction structure can be effectively improved, and on the other hand, the structure can be provided with multi-point support and multi-point limiting.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the first scissors-type telescopic mechanism and the second scissors-type telescopic mechanism each include two extension frames, the surface of the extension frame in the first scissors-type telescopic mechanism is connected to the column, and the surface of the extension frame in the second scissors-type telescopic mechanism is hinged to the positioning frame and the connecting block respectively, and a group of "X"-shaped arms hinged in sequence are installed between the relative surfaces of the two extension frames, and each of the "X"-shaped arms includes two scissor arms hinged to each other, and hinge tubes are provided at the hinges of the two "X"-shaped arms, the hinges of the extension frame and the "X"-shaped arm, and the hinges of the two scissor arms. The hinge tube is a hollow tubular structure with openings at both ends, and a transmission screw for driving the "X"-shaped arm to extend and retract is installed on the inner wall of an extension frame in the second scissors-type telescopic mechanism.

[0011] The beneficial effect of adopting the above further solution is that the first scissor-type telescopic mechanism and the second scissor-type telescopic mechanism are both commonly used structures in the prior art and will not be described in detail here.

[0012] Furthermore, a fixed hinge seat is fixedly installed on the surface of each expansion frame, and a movable hinge seat is slidably connected to the inner wall of each expansion frame. The movable hinge seats of the fixed hinge seats are hinged to the "X"-shaped arms, and one of the movable hinge seats in the second scissor-type telescopic mechanism is driven by a transmission screw.

[0013] Furthermore, the positioning auxiliary module includes a stand, a pressure measuring bag is fixedly installed on the end face of the stand, a support block is fixedly installed on the bottom of the stand, a group of positioning screw holes are provided at the bottom of the support block and the column, and two adjustment components a are installed on the back of the stand, and the surfaces of the two adjustment components a are respectively connected to the hinge tubes at corresponding positions in the first scissor-type telescopic mechanism.

[0014] The beneficial effect of adopting the above further scheme is that when the two columns are initially arranged, the "X"-shaped arm in the first scissors-type telescopic mechanism is driven to retract and retract. When the two columns are fixed, a positioning auxiliary module is installed at a designated position in the first scissors-type telescopic mechanism. By installing the positioning auxiliary module, on the one hand, the supporting area, supporting temperature and supporting strength of the building construction structure can be effectively improved, and on the other hand, the structure can be provided with multi-point support and multi-point limiting.

[0015] Furthermore, the contoured support module includes a contoured support plate, a contoured support bag is installed on the top surface of the contoured support plate, and two adjustment components b are installed on the bottom surface of the contoured support bag. The two adjustment components b are respectively connected to the hinge tubes at corresponding positions in the second scissor-type telescopic mechanism, and the inner cloth of the contoured support plate and the frame are provided with two symmetrically arranged sliding grooves connected to the adjustment components a and b.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that when in use, the top shape of the building construction structure can be adjusted through the setting of the contoured support module. During construction, when a curved skin or a plate-shaped skin is added to the top of the building construction structure, the internal inflation amount of the contoured support bag in each contoured support module can be adjusted. By adjusting the layout height and layout shape of each contoured support module, the construction structure can stably support skins of different shapes and reduce the gap between the external skin and the support structure. By reducing the gap and achieving the contouring effect, the flexibility and stability of the building construction method during construction are effectively improved.

[0017] Furthermore, an air cavity is provided inside the pressure measuring bag and the contoured support bag, a valve core connected to the air cavity is installed on the surface of the contoured support plate and the stand, and an air pressure probe for monitoring the air pressure inside the air cavity is fixedly installed inside the contoured support plate and the stand.

[0018] The beneficial effect of adopting the above further scheme is that, when in use, the internal air volume of the pressure measuring bag and the contoured support bag can be independently adjusted by setting the valve core, and the air pressure intensity in the air cavity can be monitored by setting the air pressure probe. Through real-time monitoring of the air pressure intensity, the strength, pressure and deformation of the building structure can be monitored in real time, and then the safety of the building can be monitored in real time.

[0019] Furthermore, the adjustment component a and the adjustment component b respectively include a threaded tube and a slider slidably connected to the slide groove, the peripheral side surface of the threaded tube is threadedly connected to the hinge tube, the inner wall of the threaded tube is rotatably connected to a connecting rod, and the front end of the connecting rod is hinged to the slider.

[0020] The beneficial effect of adopting the above further solution is that the layout position of each stand and the layout position of each contoured support plate can be adjusted through the threaded connection structure of the threaded tube and the hinge tube.

[0021] Furthermore, the extending direction of the contoured support plate is parallel to the extending direction of the first scissor-type telescopic mechanism, and the extending direction of the column is perpendicular to the extending direction of the second scissor-type telescopic mechanism.

[0022] Furthermore, the movable support member respectively includes an installation groove and a cavity opened inside the column, the inner wall of the installation groove is movably installed with a clamping block, a carrier is provided below the clamping block, the bottom surface of the carrier is installed with a universal caster, the top surface of the carrier is fixedly installed with a T-shaped guide rod slidably connected to the clamping block, the inner wall of the carrier is threadedly installed with a driving screw, and the bottom end of the driving screw is rotatably connected to the carrier.

[0023] The beneficial effect of adopting the above further solution is that when the column is in a fixed mode, the universal caster is stored in the cavity, and when the column needs to be moved, the universal caster can move downward and lift the column, thereby improving the convenience of moving the column. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the process structure of the assembled steel structure building construction method of the present invention; Figure 2 It is a schematic diagram of the assembly structure of the assembled steel structure building construction method of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the local enlarged structure at point A in the middle; Figure 4 It is a schematic diagram of the structure of the stand and the "X"-shaped arm of the present invention; Figure 5 It is a structural schematic diagram of the column and the block of the present invention; Figure 6 It is a structural schematic diagram of a sliding block and a supporting block of the present invention; Figure 7 It is a structural schematic diagram of a slider and a threaded tube of the present invention; Figure 8 It is a structural schematic diagram of the positioning frame and the telescopic arm of the present invention; Fig. 9 For the present invention Figure 8 A schematic diagram of the local enlarged structure at B in the middle; Fig.10 It is a schematic diagram of the structure of the contoured support bag and the threaded tube of the present invention; Fig.11 For the present invention Fig.10 Schematic diagram of the local enlarged structure at point C in the middle.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Column; 2. Telescopic arm; 3. Positioning frame; 4. Telescopic cross tube; 5. Telescopic vertical tube; 6. Connecting block; 7. Extension frame; 8. "X"-shaped arm; 9. Hinge tube; 10. Drive screw; 11. Moving hinge seat; 12. Frame; 13. Pressure measuring bag; 14. Support block; 15. Profile support plate; 16. Profile support bag; 17. Slide; 18. Valve core; 19. Air pressure probe; 20. Threaded pipe; 21. Slider; 22. Connecting rod; 23. Mounting groove; 24. Receptacle; 25. Block; 26. Carrier; 27. Universal caster; 28. T-shaped guide rod; 29. ​​Drive screw; 30. Fixed hinge seat. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] The present invention provides the following preferred embodiments like Figure 1-11 As shown, the construction method of the assembled steel structure building includes the following steps: SS01, pre-layout, build a construction area at the construction site, pour concrete bearing surface in the construction area, after the concrete bearing surface solidifies, draw lines on the bearing surface, and first set up two side support components on the concrete bearing surface according to the lines; SS02, rear layout: after the two side support components are laid out, the upper support components are laid out on the two side support components. After the upper support components are laid out, the metal skin is installed on the outer side of the steel structure to form an assembled steel structure building. The side support component includes two columns 1, a first scissor-type telescopic mechanism is installed between the opposite surfaces of the two columns 1, a plurality of positioning auxiliary modules are installed on the surface of the first scissor-type telescopic mechanism, and a movable support is movably installed at the bottom of the two columns 1; The upper supporting components include two symmetrically arranged telescopic arms 2, two symmetrically arranged positioning frames 3 and two symmetrically arranged second scissor-type telescopic mechanisms. Telescopic cross tubes 4 are installed between the relative surfaces of the two telescopic arms 2 and between the relative surfaces of the two positioning frames 3. A group of telescopic vertical tubes 5 are installed between each telescopic arm 2 and the relative surface of the adjacent positioning frames 3. Connecting blocks 6 are installed at both ends of each telescopic arm 2. The surfaces of the four connecting blocks 6 are respectively connected to the four columns 1. The surfaces of the second telescopic mechanism are respectively connected to the connecting blocks 6 and the positioning frames 3. A group of contoured support modules are installed on the surface of the second scissor-type telescopic mechanism.

[0028] The first scissors-type telescopic mechanism and the second scissors-type telescopic mechanism both include two extension frames 7. The surface of the extension frame 7 in the first scissors-type telescopic mechanism is connected to the column 1, and the surface of the extension frame 7 in the second scissors-type telescopic mechanism is hinged to the positioning frame 3 and the connecting block 6 respectively. A group of "X"-shaped arms 8 hinged in sequence are installed between the relative surfaces of the two extension frames 7. Each "X"-shaped arm 8 includes two scissor arms hinged to each other. Hinge tubes 9 are provided at the hinges of the "X"-shaped arms 8, the hinges of the extension frame 7 and the "X"-shaped arm 8, and the hinges of the two scissor arms. The hinge tube 9 is a hollow tubular structure with openings at both ends. A transmission screw 10 for driving the "X"-shaped arm to extend and retract is installed on the inner wall of an extension frame 7 in the second scissors-type telescopic mechanism.

[0029] The first scissor-type telescopic mechanism and the second scissor-type telescopic mechanism are both commonly used structures in the prior art and will not be described in detail here.

[0030] A fixed hinge seat 30 is fixedly installed on the surface of each expansion frame 7, and a movable hinge seat 11 is slidably connected to the inner wall of each expansion frame 7. The movable hinge seat 11 of the fixed hinge seat 30 is hinged to the "X"-shaped arm 8, and a movable hinge seat 11 in the second scissor-type telescopic mechanism is driven by a transmission screw 10.

[0031] The positioning auxiliary module includes a stand 12, a pressure measuring bag 13 is fixedly installed on the end face of the stand 12, a support block 14 is fixedly installed on the bottom of the stand 12, a group of positioning screw holes are provided on the bottom of the support block 14 and the column 1, and two adjustment components a are installed on the back of the stand 12, and the surfaces of the two adjustment components a are respectively connected to the hinge tubes 9 at corresponding positions in the first scissor-type telescopic mechanism.

[0032] When the two columns 1 are initially arranged, the "X"-shaped arm 8 in the first scissor-type telescopic mechanism is driven to retract. When the two columns 1 are fixed, a positioning auxiliary module is installed at a designated position in the first scissor-type telescopic mechanism. The installation of the positioning auxiliary module can effectively improve the support area, support temperature and support strength of the building construction structure on the one hand, and can provide multi-point support and multi-point limiting for the structure on the other hand.

[0033] The contoured support module includes a contoured support plate 15, a contoured support bag 16 is installed on the top surface of the contoured support plate 15, and two adjustment components b are installed on the bottom surface of the contoured support bag 16. The two adjustment components b are respectively connected to the hinge tubes 9 at corresponding positions in the second scissor-type telescopic mechanism, and the inner fabric of the contoured support plate 15 and the frame 12 are provided with two symmetrically arranged slide grooves 17 connected to the adjustment components a and b.

[0034] When in use, the top shape of the building construction structure can be adjusted through the setting of the contoured support module. During construction, when a curved skin or a plate-shaped skin is added to the top of the building construction structure, the internal inflation volume of the contoured support bag 16 in each contoured support module can be adjusted. The layout height and layout shape of each contoured support module are adjustable, so that the construction structure can stably support skins of different shapes and reduce the gap between the external skin and the support structure. By reducing the gap and achieving the contouring effect, the flexibility and stability of the building construction method during construction are effectively improved.

[0035] An air cavity is provided inside the pressure measuring bag 13 and the contouring support bag 16, and a valve core 18 connected to the air cavity is installed on the surface of the contouring support plate 15 and the stand 12. An air pressure probe 19 for monitoring the air pressure inside the air cavity is fixedly installed inside the contouring support plate 15 and the stand 12.

[0036] When in use, the valve core 18 is set so that the internal air volume of the pressure measuring bag 13 and the contoured support bag 16 can be independently adjusted, and the air pressure probe 19 is set so that the air pressure intensity in the air cavity can be monitored. Through real-time monitoring of the air pressure intensity, the strength, pressure and deformation of the building structure can be monitored in real time, and then the safety of the building can be monitored in real time.

[0037] Adjustment assembly a and adjustment assembly b respectively include a threaded tube 20 and a slider 21 slidably connected to the slide groove 17. The peripheral side surface of the threaded tube 20 is threadedly connected to the hinge tube 9. The inner wall of the threaded tube 20 is rotatably connected to a connecting rod 22. The front end of the connecting rod 22 is hinged to the slider 21.

[0038] By means of the threaded connection structure of the threaded tube 20 and the hinge tube 9 , the layout position of each stand 12 and the layout position of each contour support plate 15 can be adjusted.

[0039] The extending direction of the contoured support plate 15 is parallel to the extending direction of the first scissor-type telescopic mechanism, and the extending direction of the column 1 is perpendicular to the extending direction of the second scissor-type telescopic mechanism.

[0040] The movable support member includes a mounting groove 23 and a cavity 24 respectively opened inside the column 1, a block 25 is movably installed on the inner wall of the mounting groove 23, a carrier 26 is provided below the block 25, a universal caster 27 is installed on the bottom surface of the carrier 26, a T-shaped guide rod 28 slidably connected to the block 25 is fixedly installed on the top surface of the carrier 26, a driving screw 29 is threadedly installed on the inner wall of the carrier 26, and the bottom end of the driving screw 29 is rotatably connected to the carrier 26.

[0041] When the column 1 is in a fixed mode, the universal caster 27 is received in the cavity 24 . When the column 1 needs to be moved, the universal caster 27 can move downward and lift the column 1 , thereby improving the convenience of movement of the column 1 .

[0042] Any modifications, equivalent substitutions, improvements, etc. made to other products within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for constructing an assembled steel structure building, characterized in that: The following steps are involved: SS01, pre-layout, build a construction area at the construction site, pour concrete bearing surface in the construction area, after the concrete bearing surface solidifies, draw lines on the bearing surface, and first set up two side support components on the concrete bearing surface according to the lines; SS02, rear layout: after the two side support components are laid out, the upper support components are laid out on the two side support components. After the upper support components are laid out, the metal skin is installed on the outer side of the steel structure to form an assembled steel structure building. The side support component comprises two columns (1), a first scissor-type telescopic mechanism is installed between the opposite surfaces of the two columns (1), a plurality of positioning auxiliary modules are installed on the surface of the first scissor-type telescopic mechanism, and a movable support member is movably installed at the bottom of the two columns (1).

2. The method for constructing a prefabricated steel structure building according to claim 1, characterized in that: The upper support components respectively comprise two symmetrically arranged telescopic arms (2), two symmetrically arranged positioning frames (3) and two symmetrically arranged second scissor-type telescopic mechanisms, and telescopic transverse tubes (4) are installed between the opposing surfaces of the two telescopic arms (2) and between the opposing surfaces of the two positioning frames (3).

3. The method for constructing a prefabricated steel structure building according to claim 2, characterized in that: A group of telescopic risers (5) are installed between each telescopic arm (2) and the opposite surface of the adjacent positioning frame (3), and connecting blocks (6) are installed at both ends of each telescopic arm (2), and the surfaces of the four connecting blocks (6) are respectively connected to the four columns (1).

4. The method for constructing a prefabricated steel structure building according to claim 3, characterized in that: The surfaces of the second telescopic mechanism are respectively connected to the connecting block (6) and the positioning frame (3), and a group of contour support modules are installed on the surface of the second scissor-type telescopic mechanism; the first scissor-type telescopic mechanism and the second scissor-type telescopic mechanism each comprise two extension frames (7), the surface of the extension frame (7) in the first scissor-type telescopic mechanism is connected to the column (1), and the surface of the extension frame (7) in the second scissor-type telescopic mechanism is respectively hinged to the positioning frame (3) and the connecting block (6), and a group of "X"-shaped arms (8) hinged in sequence are installed between the opposite surfaces of the two extension frames (7), and each of the "X"-shaped arms (8) comprises two scissor arms hinged to each other, A hinge tube (9) is provided at the hinged joints of two "X"-shaped arms (8), at the hinged joints of the expansion frame (7) and the "X"-shaped arm (8), and at the hinged joints of the two scissor arms. The hinge tube (9) is a hollow tubular structure with two ends open. A transmission screw (10) for driving the "X"-shaped arm to be extended or retracted is installed on the inner wall of an expansion frame (7) in the second scissor-type telescopic mechanism. A fixed hinge seat (30) is fixedly installed on the surface of each expansion frame (7). A movable hinge seat (11) is slidably connected to the inner wall of each expansion frame (7). The movable hinge seat (11) of the fixed hinge seat (30) is hinged to the "X"-shaped arm (8). The movable hinge seat (11) is driven by a transmission screw (10); the positioning auxiliary module comprises a stand (12), the end surface of the stand (12) is fixedly mounted with a pressure measuring bag (13), the bottom of the stand (12) is fixedly mounted with a support block (14), the support block (14) and the bottom of the column (1) are both provided with a group of positioning screw holes, two adjustment components a are mounted on the back of the stand (12), the surfaces of the two adjustment components a are respectively connected to the hinge tubes (9) at corresponding positions in the first scissor-type telescopic mechanism; the contour support module comprises a contour support plate (15), the top surface of the contour support plate (15) is mounted with a contour support bag (16), the Two adjustment components b are installed on the bottom surface of the contoured support bag (16), and the two adjustment components b are respectively connected to the hinge tubes (9) at corresponding positions in the second scissor-type telescopic mechanism. The inner fabrics of the contoured support plate (15) and the stand (12) are provided with two symmetrically arranged slide grooves (17) connected to the adjustment components a and b. The pressure measuring bag (13) and the contoured support bag (16) are provided with air cavities inside. The surfaces of the contoured support plate (15) and the stand (12) are provided with valve cores (18) connected to the air cavities. The contoured support plate (15) and the stand (12) are fixedly provided with air pressure probes (19) for monitoring the air pressure inside the air cavities.

5. The method for constructing a prefabricated steel structure building according to claim 4, characterized in that: The adjustment component a and the adjustment component b each comprise a threaded tube (20) and a sliding block (21) slidably connected to the sliding groove (17).

6. The method for constructing a prefabricated steel structure building according to claim 5, characterized in that: The peripheral side surface of the threaded tube (20) is threadedly connected to the hinge tube (9), the inner wall of the threaded tube (20) is rotatably connected to a connecting rod (22), and the front end of the connecting rod (22) is hinged to the slider (21).

7. The method for constructing a prefabricated steel structure building according to claim 6, characterized in that: The extending direction of the contoured support plate (15) is parallel to the telescopic direction of the first scissor-type telescopic mechanism, and the extending direction of the upright column (1) is perpendicular to the telescopic direction of the second scissor-type telescopic mechanism.

8. The method for constructing a prefabricated steel structure building according to claim 7, characterized in that: The movable support member comprises a mounting groove (23) and a receiving cavity (24) respectively provided inside the column (1), and a clamping block (25) is movably mounted on the inner wall of the mounting groove (23).

9. The method for constructing a prefabricated steel structure building according to claim 8, characterized in that: A carrier (26) is provided below the clamping block (25), a universal caster (27) is mounted on the bottom surface of the carrier (26), a T-shaped guide rod (28) slidably connected to the clamping block (25) is fixedly mounted on the top surface of the carrier (26), a driving screw rod (29) is threadedly mounted on the inner wall of the carrier (26), and the bottom end of the driving screw rod (29) is rotatably connected to the carrier (26).

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