Lifting operation platform for fabricated steel structure building and construction method thereof

Abstract

The application discloses a lifting operation platform for a fabricated steel structure building and a construction method thereof, and belongs to the technical field of construction equipment. The lifting operation platform comprises a stand column system, a climbing track and a cantilever platform. The stand column system comprises a plurality of supporting stand columns which are arranged around the outer contour of the fabricated steel structure building. The supporting stand columns are arranged in the vertical direction and are fixedly connected with the main body steel beam of the fabricated steel structure building through a wall-attached rod system. The climbing track is arranged in the length direction of the supporting stand column. The cantilever platform is slidingly arranged on the supporting stand column through the climbing track. The cantilever platform is arranged around the outer contour of the fabricated steel structure building. Through the above structure, the problem that the fabricated steel structure building still uses the traditional scaffold in the construction process, thereby leading to low construction efficiency and poor safety of the fabricated building can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology for prefabricated buildings, specifically to a lifting operation platform for prefabricated steel structure buildings and its construction method. Background Technology

[0002] The residential sector has high demand and a broad market, making it a key area of ​​focus and research for prefabricated steel structure buildings.

[0003] In existing technologies, the construction of prefabricated steel structure residential buildings still requires the use of traditional scaffolding. Furthermore, protective measures mostly employ cantilevered scaffolding and external safety netting, while exterior waterproofing, insulation, and decoration projects largely utilize electric suspended platforms. These existing construction methods and tools suffer from low economic efficiency and high safety risks. Therefore, those skilled in the art urgently need a new lifting platform suitable for prefabricated buildings to achieve efficient and safe assembly of prefabricated steel structure residential buildings. Summary of the Invention

[0004] This invention aims to provide a lifting operation platform for prefabricated steel structure buildings and its construction method, to solve the problems of low construction efficiency and poor safety in existing prefabricated steel structure building construction, which still relies on traditional scaffolding. Therefore, this invention provides a lifting operation platform for prefabricated steel structure buildings, comprising:

[0005] The column system includes: multiple supporting columns arranged around the outer contour of the prefabricated steel structure building; the supporting columns are arranged vertically and are fixedly connected to the main steel beams of the prefabricated steel structure building through a wall-mounted rod system;

[0006] A climbing track is provided along the length of the supporting column;

[0007] The cantilever platform is slidably mounted on the supporting column via the climbing track; and the cantilever platform is arranged around the outer contour of the prefabricated steel structure building.

[0008] Optionally, the number of cantilever platforms is at least two, and the multiple cantilever platforms divide the circumference of the prefabricated steel structure building into multiple independent lifting units.

[0009] Optionally, the cantilever platform includes: a Bailey bridge and a platform walkway main structure mounted on the Bailey bridge; a lifting drive mechanism is mounted on the Bailey bridge and is connected to the climbing rail to drive the cantilever platform to lift.

[0010] Optionally, the climbing track is a rack structure arranged along the length of the support column; the lifting drive mechanism includes: a gear meshing and drivingly connected with the rack structure, and a drive motor for driving the gear to rotate.

[0011] Optionally, the supporting columns are installed at corner positions on the exterior facade of the prefabricated steel structure building at intervals of 3 to 12 meters; and / or,

[0012] Each of the cantilever platforms has a control system connected in communication with it to independently control the raising and lowering of each cantilever platform; and / or,

[0013] The top and bottom of the supporting column are also provided with limiting mechanisms, which are used to limit the movement range of the cantilever platform.

[0014] Optionally, the supporting columns are fixedly connected to the transverse supporting steel beams of the prefabricated steel structure building via a wall-mounted rod system.

[0015] Optionally, each of the cantilevered platforms is driven to be connected to at least two of the support columns.

[0016] Optionally, the lifting operation platform for prefabricated steel structure buildings further includes: a protective mechanism disposed on the side of the cantilever platform away from the prefabricated steel structure building for protecting the lifting operation platform;

[0017] The protective mechanism includes: a suspended steel plate fixedly installed on the support column, and a protective mesh installed on the suspended steel plate; multiple protective meshes constitute a protective cover for the lifting operation platform.

[0018] Optionally, the lifting platform for prefabricated steel structure buildings also includes:

[0019] The construction elevator system includes: an elevator car and a control mechanism; the elevator car is erected on the prefabricated steel structure building.

[0020] Optionally, the lifting drive mechanism further includes: a backrest wheel mounted on the mounting plate, and a safety hook mounted on the drive plate; the backrest wheel is used to drive the gear and the rack structure to mesh and connect; in addition, the safety hook is used to prevent the cantilever platform from descending when the backrest wheel fails.

[0021] Optionally, the column system further includes: a fixed base frame corresponding to the cantilever platform; the fixed base frame is provided with a rubber buffer, which is used to buffer the cantilever platform when the brake of the lifting drive mechanism fails.

[0022] Optionally, the standard sections constituting the column system are welded from square tubes, and adjacent standard sections are fixedly connected by bolts; the standard section is provided with the rack structure; the surface of the standard section other than the rack structure is hot-dip galvanized.

[0023] Furthermore, a lower limit baffle is provided on the standard section located at the bottom of the column system, and an upper limit baffle is provided on the standard section located at the top of the column system; when the lower limit baffle and the upper limit baffle touch the limit switch provided on the cantilever platform, the limit switch is activated and the cantilever platform is safely and automatically stopped at the end position of the platform.

[0024] Optionally, the wall-mounted rod system includes: a seamless round tube with connecting nuts at both ends, a steel beam connecting plate disposed on a transverse support steel beam and threadedly connected to the end of the seamless round tube, and a column fitting disposed on the column system and threadedly connected to the end of the seamless round tube.

[0025] Optionally, the protective mechanism further includes: uprights, and reinforcing frames, tripods, and scaffold boards fixedly connected to the uprights; the reinforcing frames are welded from angle steel and square tubing to ensure the rigidity of the frame; the tripods are welded from angle steel and square tubing to connect the uprights and guide rails inside and outside the frame to ensure the rigidity of the frame; the scaffold boards are made of patterned steel plates welded to square tubing, with longitudinal square tubing welded to the bottom of the scaffold boards for installing pull rods; the scaffold boards are used to seal the gap between the operating platform and the outer contour of the building at each construction stage, and the pull rods can effectively adjust the distance between the platform and the building from the wall, ensuring the platform's distance from the wall and overall sealing.

[0026] Optionally, the cantilever platform is composed of two Bailey panels connected by a frame.

[0027] A method for installing a lifting operation platform for prefabricated steel structure buildings includes the following steps:

[0028] S1, Positioning and installation of fixed base frame:

[0029] The center position of the construction fixed base frame is determined by using a ruler according to the positioning dimensions provided in the plan layout; wherein, for the double-column construction platform, the position of the marked fixed base frame is first determined, and the position of the other fixed base frame is determined based on this.

[0030] S2, Installation of the standard section and lifting drive mechanism:

[0031] The initial installation steps for the standard section are as follows: First, install the fixed base frame and lifting drive mechanism assembly structure on the first side, and adjust the adjustable legs of the fixed base frame to ensure that the horizontal and verticality of the construction platform meet the construction requirements. The horizontality of the fixed base frame is also ensured by testing with a level.

[0032] Then, the standard section and the lifting drive mechanism at the second side position and other positions are installed using the same method;

[0033] Next, the standard section is extended. After the first two or three sections of the support column and the platform section are installed and the control system is debugged, the standard section is extended.

[0034] S3, Installation of the cantilever platform system and safety mechanism:

[0035] Install the first cantilever platform on the left side, install the first cantilever platform section on the left side of the lifting drive mechanism on the first side, and fix the lifting drive mechanism of the cantilever platform section; when installing the cantilever platform section, the first frame should be installed first, then the second frame should be installed, and then the fixed connecting frame, platform section connecting uprights and connecting diagonal braces should be installed in sequence according to the dimensions of the construction platform plan.

[0036] Install the first cantilever platform on the right side, install the first cantilever platform section on the right side of the lifting drive mechanism on the first side, and fix the lifting drive mechanism of the cantilever platform section.

[0037] Install the cantilevered platform in the middle position, and build a support structure at the bottom of the end of the cantilevered platform section in the middle position to install the next platform section;

[0038] Install the fixed base frame, lifting drive mechanism assembly, and cantilever platform on the right side; install the fixed base frame and lifting drive mechanism assembly on the second side; adjust the adjustable outriggers of the fixed base frame to ensure the horizontal and vertical alignment of the construction platform meets construction requirements; and ensure the horizontality of the fixed base frame by testing with a level; and install the corresponding cantilever platform.

[0039] S4, Install the upper frame system: Install the uprights, scaffold boards, reinforcing frames, and outer protective frame with protective netting in sequence.

[0040] A method for constructing a prefabricated steel structure building, using the lifting operation platform for prefabricated steel structure buildings as described in claim 1, includes: a construction stage of the main structure of the prefabricated steel structure building and a construction stage of the exterior facade of the main structure of the prefabricated steel structure building.

[0041] The construction phase of the prefabricated steel structure building's main structure includes the following steps:

[0042] S101, install the first steel column of the column base section and complete the construction of the basement roof slab; then, install the steel columns of the 2nd to 4th floors of the prefabricated steel structure building and the steel beams at the 2nd floor position.

[0043] S102, Assemble the column system, climbing rail and cantilever platform of the lifting operation platform;

[0044] S103, install the steel beams of the 3rd and 4th floors of the prefabricated steel structure building; and attach and fix each supporting column of the column system to the steel beams of the 3rd and 4th floors of the prefabricated steel structure building respectively.

[0045] S104, the cantilever platform moves sequentially to the 2nd and 3rd floors of the prefabricated steel structure building, and the cantilever platform provides protection for the 2nd and 3rd floors of the prefabricated steel structure building, thereby enabling the installation of floor slab reinforcement and PC components on the 2nd and 3rd floors; and, inserting electromechanical pre-embedded parts, and pouring concrete.

[0046] S105, attach and fix the multiple supporting columns of the column system to the 4th floor steel beam of the prefabricated steel structure building; drive the cantilever platform to climb to the 3rd floor and install the protective mechanism of the prefabricated steel structure building;

[0047] The cantilevered platforms provide protection for the 3rd and 4th floors of the prefabricated steel structure building, and are used for the installation of steel reinforcement, PC components, and concrete pouring for the 4th floor slab; at the same time, they are used for the concrete core grouting of the steel columns from the 2nd to the 4th floors.

[0048] This step also includes: concrete pouring: three sets of frames are installed on the standard section to form three connecting support points, and a Bailey truss is installed on top of it. A track is laid above the Bailey truss for the mobile concrete placing boom to slide on. The mobile concrete placing boom has a height of 3.333m, a maximum working radius of 28m, and a flexible hose at the boom end that is 3 to 6 meters long with a specification of φ133*6mm. By sliding on the track, it can cover the entire floor area for large-scale concrete pouring.

[0049] S106 involves the installation of steel columns and beams on the 5th to 7th floors of prefabricated steel structure buildings, including the installation of secondary structures, plastering, waterproofing, and tower crane wall attachment procedures.

[0050] This step also includes: ALC panel installation: Workers stand above the construction platform, and the installation sequence is as follows: wall panels at door and window openings are installed sequentially from both ends. Whole panels should preferably be used on both sides of door openings. Wall panels without door openings should be installed sequentially from one end to the other. The bottom of the wall panel is fixed to the floor slab using pipe clamps or mortar. For exterior wall panels, the top is connected to the steel beam using a sliding S-plate connection node, the sides of the wall panel are connected to the steel column using flexible materials, and the wall panel is connected to the wall using adhesive mortar.

[0051] S107. Repeat steps S103 to S106 until the cantilever platform is raised to the top floor, and the main structure construction of the prefabricated steel structure building is completed.

[0052] In addition, after the main structure construction stage of the prefabricated steel structure building is completed, the exterior facade construction stage of the main structure of the prefabricated steel structure building will be carried out.

[0053] The construction phase of the exterior facade of the prefabricated steel structure building includes the following steps:

[0054] After cleaning the ALC wall surface, apply a layer of special interface agent, then apply plaster in two layers, followed by waterproofing. Finally, attach the exterior using an adhesive anchoring method, which involves pressing a layer of hot-dip galvanized welded wire mesh in the middle and anchoring it to the structural wall with anchor bolts. Finally, hang a real stone paint insulation and decorative integrated panel on the exterior.

[0055] S201, The top-floor exterior wall insulation and decoration integrated panel and exterior window of the prefabricated steel structure building are constructed through the cantilever platform;

[0056] The cantilever platform is controlled to descend from the top floor to the bottom floor, and the construction of the integrated exterior wall insulation and decoration panels and exterior windows of the prefabricated steel structure building is carried out sequentially from the top floor to the bottom floor.

[0057] In the above process, the external wall insulation and decoration integrated panel at the attachment point of the support column of the lifting operation platform is not constructed in this step.

[0058] S202, control the cantilever platform to move from the bottom floor to the floor below the top floor of the prefabricated steel structure building, and remove the support columns attached to the top floor. Then, carry out the construction of the integrated exterior wall insulation and decoration panels, gas and drainage pipes at the attachment point of the second-to-top floor of the prefabricated steel structure building. After that, complete the construction of the integrated exterior wall insulation and decoration panels, gas and drainage pipes at the attachment points of the climbing rails on each floor from the top floor to the bottom floor in sequence, so as to complete all the construction work of the prefabricated steel structure building.

[0059] The technical solution of this invention has the following advantages:

[0060] 1. The lifting operation platform for prefabricated steel structure buildings provided by the present invention includes:

[0061] The column system includes: multiple supporting columns arranged around the outer contour of the prefabricated steel structure building; the supporting columns are arranged vertically and are fixedly connected to the main steel beams of the prefabricated steel structure building through a wall-mounted rod system;

[0062] A climbing track is provided along the length of the supporting column;

[0063] The cantilever platform is slidably mounted on the supporting column via the climbing track; and the cantilever platform is arranged around the outer contour of the prefabricated steel structure building.

[0064] In this invention, the lifting platform is designed for prefabricated steel structure buildings. Multiple supporting columns are arranged around the outer contour of the prefabricated steel structure building, and these columns are fixed to the main steel beams. This setup effectively replaces traditional scaffolding for the construction of prefabricated steel structure residential buildings. It allows construction workers to perform construction work on the lifting platform, solving the problem of existing scaffolding requiring the use of electric suspended platforms for exterior wall waterproofing, insulation, and decoration projects. It also addresses the issues of low construction efficiency and poor safety in existing prefabricated building construction.

[0065] 2. The lifting operation platform for prefabricated steel structure buildings provided by the present invention has at least two cantilever platforms, and the multiple cantilever platforms divide the prefabricated steel structure building into multiple independent lifting units in the circumference.

[0066] In this invention, by setting up multiple cantilever platforms, the prefabricated steel structure building is divided into multiple independent lifting units along the outer contour, thereby enabling construction to be carried out at different locations of the prefabricated steel structure building, which effectively improves construction efficiency.

[0067] 3. The present invention provides a lifting operation platform for prefabricated steel structure buildings, wherein the cantilever platform includes: a Bailey bridge and a platform walkway main structure disposed on the Bailey bridge; a lifting drive mechanism is disposed on the Bailey bridge, and the lifting drive mechanism is connected to the climbing rail to drive the cantilever platform to lift.

[0068] In this invention, the lifting drive mechanism on the cantilever platform is connected to the climbing track transmission, which can stably and reliably drive the lifting action of the cantilever platform.

[0069] 4. The lifting operation platform for prefabricated steel structure buildings provided by the present invention, wherein the climbing track is a rack structure arranged along the length direction of the supporting column; the lifting drive mechanism includes: a gear meshing and drivingly connected with the rack structure, and a drive motor for driving the gear to rotate.

[0070] In this invention, the cantilever platform is driven by the meshing transmission structure of the gear and rack, and the cantilever platform is raised and lowered by two lifting drive mechanisms, which can effectively ensure the climbing speed of the cantilever platform.

[0071] 5. The lifting operation platform for prefabricated steel structure buildings provided by the present invention has the supporting columns installed at intervals of 3 to 12 meters at the corners of the exterior facade of the prefabricated steel structure building; the above-mentioned interval setting can effectively ensure the reliable and stable operation of the cantilever platform.

[0072] Each of the cantilever platforms has a control system that is connected to it in communication, so as to control the independent lifting and lowering of each cantilever platform, thereby ensuring that each cantilever platform works independently and stably.

[0073] The top and bottom of the supporting column are also provided with limiting mechanisms, which are used to limit the movement range of the cantilever platform, thereby preventing the cantilever platform from moving out of the preset track.

[0074] 6. The lifting operation platform for prefabricated steel structure buildings provided by the present invention has its supporting columns fixedly connected to the transverse supporting steel beams of the prefabricated steel structure building through a wall-mounted rod system.

[0075] In this invention, the supporting columns are fixedly connected to the transverse supporting steel beams of the prefabricated steel structure building through a wall-mounted rod system, thereby providing sufficient supporting force to the column system through the transverse supporting steel beams, thus ensuring the stability and reliability of the supporting columns.

[0076] 7. The lifting operation platform for prefabricated steel structure buildings provided by the present invention further includes: a protective mechanism disposed on the side of the cantilever platform away from the prefabricated steel structure building for protecting the lifting operation platform; the protective mechanism includes: a suspension steel plate fixedly disposed on the support column, and a protective mesh installed on the suspension steel plate; multiple protective meshes constitute a protective cover for the lifting operation platform.

[0077] In this invention, the aforementioned protective mechanism effectively protects the cantilevered platform and the prefabricated steel structure building. Furthermore, existing external protective brackets need to be installed on the main building structure, which significantly impacts it, while the protective mechanism in this invention does not affect the main building structure.

[0078] 8. The installation method for the lifting operation platform provided by the present invention is used to install a lifting operation platform for prefabricated steel structure buildings.

[0079] S1, Positioning and installation of fixed base frame:

[0080] The center position of the construction fixed base frame is determined by using a ruler according to the positioning dimensions provided in the plan layout; wherein, for the double-column construction platform, the position of the marked fixed base frame is first determined, and the position of the other fixed base frame is determined based on this.

[0081] S2, Installation of the standard section and lifting drive mechanism:

[0082] The initial installation steps for the standard section are as follows: First, install the fixed base frame and lifting drive mechanism assembly structure on the first side, and adjust the adjustable legs of the fixed base frame to ensure that the horizontal and verticality of the construction platform meet the construction requirements. The horizontality of the fixed base frame is also ensured by testing with a level.

[0083] Then, the standard section and the lifting drive mechanism at the second side position and other positions are installed using the same method;

[0084] Next, the standard section is extended. After the first two or three sections of the support column and the platform section are installed and the control system is debugged, the standard section is extended.

[0085] S3, Installation of the cantilever platform system and safety mechanism:

[0086] Install the first cantilever platform on the left side, install the first cantilever platform section on the left side of the lifting drive mechanism on the first side, and fix the lifting drive mechanism of the cantilever platform section; when installing the cantilever platform section, the first frame should be installed first, then the second frame should be installed, and then the fixed connecting frame, platform section connecting uprights and connecting diagonal braces should be installed in sequence according to the dimensions of the construction platform plan.

[0087] Install the first cantilever platform on the right side, install the first cantilever platform section on the right side of the lifting drive mechanism on the first side, and fix the lifting drive mechanism of the cantilever platform section.

[0088] Install the cantilevered platform in the middle position, and build a support structure at the bottom of the end of the cantilevered platform section in the middle position to install the next platform section;

[0089] Install the fixed base frame, lifting drive mechanism assembly, and cantilever platform on the right side; install the fixed base frame and lifting drive mechanism assembly on the second side; adjust the adjustable outriggers of the fixed base frame to ensure the horizontal and vertical alignment of the construction platform meets construction requirements; and ensure the horizontality of the fixed base frame by testing with a level; and install the corresponding cantilever platform.

[0090] S4, Install the upper frame system: Install the uprights, scaffold boards, reinforcing frames, and outer protective frame with protective netting in sequence.

[0091] In this invention, the aforementioned installation method for the lifting operation platform allows for a secure and rapid erection of the platform, thereby achieving high-efficiency and high-safety construction of prefabricated steel structure buildings. This solves the problem of existing technologies still relying on traditional scaffolding during the construction of prefabricated steel structure buildings.

[0092] 9. The construction method for prefabricated steel structure buildings provided by the present invention includes: the construction stage of the main structure of the prefabricated steel structure building and the construction stage of the exterior facade of the main structure of the prefabricated steel structure building;

[0093] The construction phase of the prefabricated steel structure building's main structure includes the following steps:

[0094] S101, install the first steel column of the column base section and complete the construction of the basement roof slab; then, install the steel columns of the 2nd to 4th floors of the prefabricated steel structure building and the steel beams at the 2nd floor position.

[0095] S102, Assemble the column system, climbing rail and cantilever platform of the lifting operation platform;

[0096] S103, install the steel beams of the 3rd and 4th floors of the prefabricated steel structure building; and attach and fix the multiple supporting columns of the column system to the steel beams of the 3rd and 4th floors of the prefabricated steel structure building respectively.

[0097] S104, the cantilever platform moves sequentially to the 2nd and 3rd floors of the prefabricated steel structure building, and the cantilever platform provides protection for the 2nd and 3rd floors of the prefabricated steel structure building, thereby enabling the installation of floor slab reinforcement and PC components on the 2nd and 3rd floors; and, inserting electromechanical pre-embedded parts, and pouring concrete.

[0098] S105, attach and fix the multiple supporting columns of the column system to the 4th floor steel beam of the prefabricated steel structure building; drive the cantilever platform to climb to the 3rd floor and install the protective mechanism of the prefabricated steel structure building;

[0099] The cantilevered platforms provide protection for the 3rd and 4th floors of the prefabricated steel structure building, and are used for the installation of steel reinforcement, PC components, and concrete pouring for the 4th floor slab; at the same time, they are used for the concrete core grouting of the steel columns from the 2nd to the 4th floors.

[0100] S106 involves the installation of steel columns and beams on the 5th to 7th floors of prefabricated steel structure buildings, including the installation of secondary structures, plastering, waterproofing, and tower crane wall attachment procedures.

[0101] S107. Repeat steps S103 to S106 until the cantilever platform is raised to the top floor, and the main structure construction of the prefabricated steel structure building is completed.

[0102] In this invention, the construction method for the main structure construction stage of prefabricated steel structure buildings can be realized through a lifting operation platform. This construction method is applicable to prefabricated steel structure residential buildings and can effectively replace traditional cantilever scaffolding and cantilever netting construction methods. It eliminates the need for electric suspended platforms, which are commonly used in wall waterproofing, insulation, and decoration projects, thus solving the problems of low economic efficiency and high safety risks associated with existing construction methods and tools. Furthermore, the column system and climbing rails in this invention are independent of the main structure of the prefabricated steel structure residential building and have virtually no impact on the main structure, thereby ensuring the safety of the main structure. In addition, the cantilever platforms in this application are multiple independent lifting units, and each cantilever platform has a fast lifting speed, reaching one floor every 15 minutes, offering the advantages of speed and efficiency.

[0103] 10. The construction method for prefabricated steel structure buildings provided by the present invention, wherein after the main structure construction stage of the prefabricated steel structure building is completed, the exterior facade construction stage of the main structure of the prefabricated steel structure building is carried out.

[0104] The construction phase of the exterior facade of the prefabricated steel structure building includes the following steps:

[0105] S201, The top-floor exterior wall insulation and decoration integrated panel and exterior window of the prefabricated steel structure building are constructed through the cantilever platform;

[0106] The cantilever platform is controlled to descend from the top floor to the bottom floor, and the construction of the integrated exterior wall insulation and decoration panels and exterior windows of the prefabricated steel structure building is carried out sequentially from the top floor to the bottom floor.

[0107] In the above process, the external wall insulation and decoration integrated panel at the attachment point of the support column of the lifting operation platform is not constructed in this step.

[0108] S202, control the cantilever platform to move to the floor below the top floor of the prefabricated steel structure building, and remove the support columns attached to the top floor. Then, carry out the construction of the integrated exterior wall insulation and decoration panels, gas and drainage pipes at the attachment point of the second-to-top floor of the prefabricated steel structure building. After that, complete the construction of the integrated exterior wall insulation and decoration panels, gas and drainage pipes at the attachment point of the climbing rail on each floor from the top floor to the bottom floor in sequence to complete all the construction work of the prefabricated steel structure building.

[0109] In this invention, the cantilever platform is used for the construction of integrated exterior wall insulation and decoration panels and exterior windows in prefabricated steel structure buildings. This effectively replaces traditional scaffolding and electric suspended platforms, thereby significantly improving economic efficiency and construction effectiveness. Furthermore, the protective netting forming a shield around the lifting platform effectively reduces construction safety risks. Simultaneously, it provides external protection and a construction platform for the installation of exterior wall ALC panels and integrated exterior wall insulation and decoration panels, avoiding the use of other more dangerous work platforms such as electric suspended platforms for high-altitude operations, thus improving the safety of on-site construction work. Attached Figure Description

[0110] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0111] Figure 1 This is a schematic diagram of the lifting operation platform structure for prefabricated steel structure buildings provided by the present invention.

[0112] Figure 2 A partially enlarged schematic diagram of the wall-mounted rod system for the climbing track and lifting drive mechanism on the support column provided by the present invention;

[0113] Figure 3 A schematic diagram showing the relative positions of the supporting column, cantilever platform, and transverse supporting steel beam provided by the present invention;

[0114] Figure 4 This is a partially enlarged schematic diagram of the supporting column and the transverse supporting steel beam that are fixedly connected by a wall-mounted rod system, as provided by the present invention.

[0115] Figure 5 This is a schematic diagram of the three-dimensional structure of the fixed base frame provided by the present invention;

[0116] Figure 6 A schematic diagram of the three-dimensional structure of the standard section provided for this invention;

[0117] Figure 7 A schematic diagram of the limiting baffle structure provided by the present invention;

[0118] Figure 8 A schematic diagram of the connection structure between the standard section and the transverse support steel beam provided by the present invention;

[0119] Figure 9 A schematic diagram of the three-dimensional structure of the reinforcing frame provided by the present invention;

[0120] Figure 10A schematic diagram of the three-dimensional structure of the scaffolding board provided by the present invention;

[0121] Figure 11 A three-dimensional structural diagram of the cantilever platform composed of Bailey panels and connecting frames provided by the present invention;

[0122] Figure 12 This is a side view of the lifting operation platform for prefabricated steel structure buildings provided by the present invention.

[0123] Figure 13 This is a schematic diagram of the installation process of the cantilever platform section provided by the present invention;

[0124] Figure 14 A schematic diagram of the installation of the cantilevered platform section at the intermediate position provided by the present invention;

[0125] Figure 15 A schematic diagram of the installation structure of the cantilever platform section and column provided by the present invention;

[0126] Figure 16 A schematic diagram of the installation structure of the upper frame of the lifting operation platform provided by the present invention;

[0127] Figure 17 A three-dimensional structural diagram of a lifting operation platform in the preparation lifting stage provided by the present invention;

[0128] Figure 18 A three-dimensional structural diagram of the lifting operation platform in the lifting and protection stage provided by the present invention;

[0129] Figure 19 A three-dimensional structural diagram of the lifting operation platform for installing wall-mounted rods and standard column sections during the lifting and protection phase, provided by the present invention;

[0130] Figure 20 This is a schematic diagram of the installation status of the mobile fabric laying machine provided by the present invention;

[0131] Figure 21 This is a side view of the mobile fabric laying machine provided by the present invention;

[0132] Figure 22 This is a schematic diagram of the protective mesh structure provided by the present invention;

[0133] Figure 23 The present invention provides a method for fixing Figure 22 The diagram shows the connection of the protective mesh panel.

[0134] Explanation of reference numerals in the attached figures:

[0135] 1-Prefabricated steel structure building; 2-Supporting column; 3-Climbing track; 4-Cantilever platform; 5-Bailey bridge; 6-Platform walkway main structure; 7-Lifting drive mechanism; 8-Wall anchor system; 9-Horizontal support steel beam; 10-Protective netting; 11-Fixed base frame; 12-Rubber buffer; 13-Standard section; 14-Lower limit baffle, upper limit baffle; 15-Seamless round tube; 16-Steel beam connecting plate; 17-Column fitting; 18-Bailey section; 19-Connecting frame; 20-Upright pole; 21-Strengthening frame; 22-Tripod; 23-Scaffold board; 24-First frame section; 25-Second frame section; 26-Fixed connecting frame; 27-Platform section connecting upright; 28-Connecting diagonal brace; 29-Supporting structure; 30-Connector; 31-Mobile concrete placing machine; 32-Frame set; 33-Bailey truss. Detailed Implementation

[0136] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0137] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0138] Example 1

[0139] This describes a lifting operation platform for prefabricated steel structure buildings, such as... Figure 1 As shown, it includes:

[0140] The column system includes: multiple supporting columns 2 arranged around the outer contour of the prefabricated steel structure building 1; the supporting columns 2 are arranged vertically and fixedly connected to the main steel beams of the prefabricated steel structure building 1 through a wall-mounted rod system 8; to ensure the connection strength, such as Figure 3 and Figure 4 As shown, the supporting columns 2 are fixedly connected to the transverse supporting steel beams 9 of the prefabricated steel structure building 1 via a wall-mounted rod system 8. In this embodiment, the supporting columns 2 are installed at corner positions on the exterior facade of the prefabricated steel structure building 1 at intervals of 3 to 12 meters; in this embodiment, the top and bottom of the supporting columns 2 are also equipped with limiting mechanisms, which are used to limit the movement range of the cantilever platform 4. Figure 5 As shown, the column system also includes: a fixed base frame 11 corresponding to the cantilever platform 4; a rubber buffer 12 is provided on the fixed base frame 11, and the rubber buffer 12 is used to buffer the cantilever platform 4 when the brake of the lifting drive mechanism 7 fails.

[0141] The climbing track 3 is set along the length of the supporting column 2; additionally, as... Figure 2 As shown, in this embodiment, the climbing track 3 is a rack structure arranged along the length of the supporting column 2; the lifting drive mechanism 7 includes: a gear meshing and drivingly connected with the rack structure, and a drive motor for driving the gear to rotate; further, the lifting drive mechanism 7 also includes: a backrest wheel arranged on the mounting plate, and a safety hook arranged on the drive plate; the backrest wheel is used to drive the gear and the rack structure to mesh and connect; in addition, the safety hook is used to prevent the cantilever platform 4 from descending when the backrest wheel fails.

[0142] Cantilever platforms 4 are slidably mounted on the supporting columns 2 via the climbing rails 3, and each cantilever platform 4 is tractively connected to at least two supporting columns 2. Furthermore, the cantilever platforms 4 are arranged around the outer contour of the prefabricated steel structure building 1. In this embodiment, the number of cantilever platforms 4 is at least two, and multiple cantilever platforms 4 divide the circumference of the prefabricated steel structure building 1 into multiple independent lifting units. Additionally, in this embodiment, as... Figure 1 As shown, the cantilever platform 4 includes: a Bailey bridge 5 and a platform walkway main structure 6 mounted on the Bailey bridge 5; a lifting drive mechanism 7 is mounted on the Bailey bridge 5, and the lifting drive mechanism 7 is connected to the climbing rail 3 to drive the cantilever platform 4 to lift.

[0143] The control system is connected to each of the cantilever platforms 4 to control the independent lifting and lowering of each of the cantilever platforms 4.

[0144] A protective mechanism is installed on the side of the cantilever platform 4 away from the prefabricated steel structure building 1 to protect the lifting operation platform; the protective mechanism includes: a suspended steel plate fixedly installed on the support column 2, and a protective mesh 10 installed on the suspended steel plate; Figure 22 and Figure 23 As shown, the protective mesh 10 is fixed by connectors. Furthermore, multiple protective mesh panels 10 constitute a protective cover for the lifting operation platform.

[0145] The construction elevator system includes an elevator car and a control mechanism; the elevator car is mounted on the prefabricated steel structure building 1.

[0146] In this embodiment, as Figure 6As shown, the standard section 13 constituting the column system is welded from square tubes, and adjacent standard sections 13 are fixedly connected by bolts; the standard section 13 is provided with the rack structure; the surface of the standard section 13 except for the rack structure is hot-dip galvanized.

[0147] Moreover, such as Figure 7 As shown, a lower limit baffle 14 is also provided on the standard section 13 located at the bottom of the column system, and an upper limit baffle 14 is also provided on the standard section 13 located at the top of the column system; when the lower limit baffle 14 and the upper limit baffle 14 touch the limit switch provided on the cantilever platform 4, the limit switch is activated and the cantilever platform 4 is safely and automatically stopped at the end position of the platform.

[0148] In this embodiment, as Figure 8 As shown, the wall-mounted rod system 8 includes: a seamless round tube 15 with connecting nuts at both ends, a steel beam connecting plate 16 set on the transverse support steel beam 9 and threadedly connected to the end of the seamless round tube 15, and a column fitting 17 set on the column system and threadedly connected to the end of the seamless round tube 15.

[0149] In this embodiment, in order to ensure the protective effect of the protective mechanism, such as Figure 9 , Figure 10 and Figure 12 As shown, the protective mechanism includes: uprights 20, and a reinforcing frame 21, a tripod 22, and scaffold boards 23 fixedly connected to the uprights 20; the reinforcing frame 21 is welded from angle steel and square tubing to ensure the rigidity of the frame; the tripod 22 is welded from angle steel and square tubing to connect the uprights 20 inside and outside the frame and the guide rails to ensure the rigidity of the frame; the scaffold boards 23 are made of patterned steel plates and square tubing, with longitudinal square tubing welded to the bottom of the scaffold boards 23 for installing pull rods; the scaffold boards 23 are used to seal the gap between the operating platform and the outer contour of the building at each construction stage, and the pull rods can effectively adjust the distance between the platform and the building from the wall, ensuring the platform's distance from the wall and overall sealing.

[0150] In addition, such as Figure 11 As shown, in this embodiment, the cantilever platform 4 is composed of two Bailey panels 18 connected by a connecting frame 19.

[0151] The installation method of the lifting operation platform, such as Figures 17 to 19 As shown, it includes the following steps:

[0152] S1, Positioning and installation of fixed base frame 11:

[0153] The center position of the construction fixed base frame 11 is determined by using a ruler according to the positioning dimensions provided in the plan layout; wherein, for the double column type construction platform, the position of the fixed base frame 11 is first determined and marked, and the position of the other fixed base frame 11 is determined based on this.

[0154] Installation of S2, standard section 13 and lifting drive mechanism 7:

[0155] The initial installation steps of standard section 13 are as follows: First, install the fixed base frame 11 and lifting drive mechanism 7 assembly structure on the first side position, and adjust the adjustable legs of the fixed base frame 11 to ensure that the horizontal and verticality of the construction platform meet the construction requirements, and ensure the horizontality of the fixed base frame 11 by testing with a level.

[0156] Then, the standard section 13 and the lifting drive mechanism 7 at the second side position and other positions are installed using the same method;

[0157] Afterwards, the standard section 13 is extended. After the first two or three sections of the support column 2 and the platform section are installed and the control system is debugged, the standard section 13 is extended.

[0158] S3, Installation of the cantilever platform system and safety mechanism:

[0159] Install the first cantilever platform 4 on the left side, as follows: Figure 13 As shown, the first cantilever platform section on the left side of the lifting drive mechanism 7 is installed at the first side position, and the lifting drive mechanism 7 of the cantilever platform section is fixed. When installing the cantilever platform section, the first frame 24 should be installed first, then the second frame 25 should be installed, and then the fixed connecting frame 26, the platform section connecting upright 27 and the connecting diagonal brace 28 should be installed in sequence according to the dimensions of the construction platform plan.

[0160] Install the first cantilever platform 4 on the right side, install the first cantilever platform section on the right side of the lifting drive mechanism 7 on the first side, and fix the lifting drive mechanism 7 on the cantilever platform section.

[0161] Install the cantilevered platform 4 in the middle position, such as Figure 14 As shown, a support structure 29 is made at the bottom of the end of the cantilevered platform section 4 in the middle position, so as to install the next platform section;

[0162] Install the fixed base frame 11, the lifting drive mechanism 7 assembly, and the cantilever platform 4 on the right side, as shown below. Figure 15 As shown, the fixed base frame 11 and the lifting drive mechanism 7 are installed on the second side. The adjustable legs of the fixed base frame 11 are adjusted to ensure that the horizontal and verticality of the construction platform meet the construction requirements. The horizontality of the fixed base frame 11 is also ensured by testing with a level. The corresponding cantilever platform 4 is then installed.

[0163] S4, Install the upper frame system: such as Figure 16 As shown, the uprights 27, scaffold boards 23, reinforcing frames 21, and outer protective frames with protective netting 10 are installed in sequence.

[0164] A method for constructing a prefabricated steel structure building, using the lifting operation platform for prefabricated steel structure buildings as described in claim 1, includes: a construction stage of the main structure of the prefabricated steel structure building and a construction stage of the exterior facade of the main structure of the prefabricated steel structure building.

[0165] The construction phase of the prefabricated steel structure building's main structure includes the following steps:

[0166] S101, install the first steel column of the column base section and complete the construction of the basement roof slab; then, install the steel columns of the 2nd to 4th floors of the prefabricated steel structure building and the steel beams at the 2nd floor position.

[0167] S102, Assemble the column system, climbing rail 3 and cantilever platform 4 of the lifting operation platform;

[0168] S103, install the steel beams of the 3rd and 4th floors of the prefabricated steel structure building; and attach and fix each support column 2 of the column system to the steel beams of the 3rd and 4th floors of the prefabricated steel structure building respectively.

[0169] S104, the cantilever platform 4 moves sequentially to the 2nd and 3rd floors of the prefabricated steel structure building, and the cantilever platform 4 provides protection for the 2nd and 3rd floors of the prefabricated steel structure building, thereby enabling the installation of floor slab reinforcement and PC components on the 2nd and 3rd floors; and, inserting electromechanical pre-embedded parts, and pouring concrete.

[0170] S105, attach and fix the multiple supporting columns 2 of the column system to the 4th floor steel beam of the prefabricated steel structure building; drive the cantilever platform 4 to climb to the 3rd floor and install the protective mechanism of the prefabricated steel structure building;

[0171] The cantilever platform 4 provides protection for the 3rd and 4th floors of the prefabricated steel structure building, and carries out the installation of steel reinforcement, PC components and concrete pouring for the 4th floor slab; at the same time, it completes the concrete core grouting work for the steel columns from the 2nd to the 4th floors.

[0172] like Figure 20 and Figure 21As shown, this step also includes: concrete pouring: by installing three sets of brackets 32 on the standard section to form three connected support points, a Bailey truss 33 is installed on the upper part of the brackets, and a track is laid on the Bailey truss 33 for the mobile concrete placing boom 31 to slide; wherein, the mobile concrete placing boom 31 has a height of 3.333m, a maximum working radius of 28m, and a flexible hose at the boom end with a length of 3 to 6 meters and a specification of φ133*6mm. By sliding along the track, it can cover the entire area of ​​the floor plan, thereby enabling large-scale concrete pouring;

[0173] S106 involves the installation of steel columns and beams on the 5th to 7th floors of prefabricated steel structure buildings, including the installation of secondary structures, plastering, waterproofing, and tower crane wall attachment procedures.

[0174] This step also includes: ALC panel installation: Workers stand above the construction platform, and the installation sequence is as follows: wall panels at door and window openings are installed sequentially from both ends. Whole panels should preferably be used on both sides of door openings. Wall panels without door openings should be installed sequentially from one end to the other. The bottom of the wall panel is fixed to the floor slab using pipe clamps or mortar. For exterior wall panels, the top is connected to the steel beam using a sliding S-plate connection node, the sides of the wall panel are connected to the steel column using flexible materials, and the wall panel is connected to the wall using adhesive mortar.

[0175] S107, repeat steps S103 to S106 until the cantilever platform 4 is raised to the top floor, and the main structure construction of the prefabricated steel structure building is completed.

[0176] In addition, after the main structure construction stage of the prefabricated steel structure building is completed, the exterior facade construction stage of the main structure of the prefabricated steel structure building will be carried out.

[0177] The construction phase of the exterior facade of the prefabricated steel structure building includes the following steps:

[0178] After cleaning the ALC wall surface, apply a layer of special interface agent, then apply two 15mm thick 1:2 cement mortar layers, followed by a 5mm thick dry powder polymer cement waterproof mortar layer. Finally, the exterior is anchored to the structural wall using an adhesive anchoring method, i.e., a layer of hot-dip galvanized welded wire mesh is pressed into the middle and anchored with anchor bolts. Finally, a real stone paint insulation and decoration integrated panel is hung on the exterior.

[0179] S201, The top-floor exterior wall insulation and decoration integrated panel and exterior window of the prefabricated steel structure building are constructed through the cantilever platform 4;

[0180] The cantilever platform 4 is controlled to descend from the top floor layer by layer, and the construction of the integrated exterior wall insulation and decoration panels and exterior windows of the prefabricated steel structure building is carried out sequentially from the top floor to the bottom floor.

[0181] In the above process, the external wall insulation and decoration integrated panel at the attachment point of the support column 2 of the lifting operation platform is not constructed in this step.

[0182] S202, control the cantilever platform 4 to move from the bottom floor to the floor below the top floor of the prefabricated steel structure building, and remove the support column 2 on the top floor. Then, carry out the construction of the integrated exterior wall insulation and decoration panel, gas and drainage pipes at the attachment point of the second-to-top floor of the prefabricated steel structure building. After that, complete the construction of the integrated exterior wall insulation and decoration panel, gas and drainage pipes at the attachment point of the climbing rail on each floor from the top floor to the bottom floor in sequence to complete all the construction work of the prefabricated steel structure building.

[0183] Of course, in this embodiment, the specific structure of the cantilever platform 4 is not specifically limited. In other embodiments, the cantilever platform 4 can also be a steel structure platform other than the Bailey bridge 5 or a support platform made of other materials.

[0184] Of course, in this embodiment, the specific structure of the lifting drive mechanism 7 is not specifically limited. In other embodiments, the lifting drive mechanism 7 may also be a chain drive structure or other drive structures.

[0185] Of course, in this embodiment, the spacing and specific location of adjacent support columns 2 are not specifically limited. In other embodiments, adjacent support columns 2 are spaced apart according to the specific circumstances of the project.

[0186] Of course, in this embodiment, the specific method of controlling the lifting and lowering of the cantilever platform 4 is not limited. In other embodiments, each cantilever platform 4 can also be controlled individually by a manual control mechanism; or, it can be connected to a remote wireless control terminal to control the lifting and lowering of the cantilever platform 4.

[0187] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A method for constructing the building structure of a prefabricated steel structure, using a lifting operation platform for prefabricated steel structure buildings, characterized in that, include: The construction phase of the main structure of the prefabricated steel structure building and the construction phase of the exterior facade of the main structure of the prefabricated steel structure building; The construction phase of the prefabricated steel structure building's main structure includes the following steps: S101, install the first steel column of the column base section and complete the construction of the basement roof slab; then, install the steel columns of the 2nd to 4th floors of the prefabricated steel structure building and the steel beams at the 2nd floor position. S102, Assemble the column system, climbing rail (3) and cantilever platform (4) of the lifting operation platform. S103, install the steel beams of the 3rd and 4th floors of the prefabricated steel structure building; and attach and fix each support column (2) of the column system to the steel beams of the 3rd and 4th floors of the prefabricated steel structure building respectively. S104, the cantilever platform (4) moves sequentially to the 2nd and 3rd floors of the prefabricated steel structure building. The cantilever platform (4) provides protection for the 2nd and 3rd floors of the prefabricated steel structure building, thereby enabling the installation of floor slab reinforcement and PC components on the 2nd and 3rd floors; and, inserting electromechanical pre-embedded parts for concrete pouring. S105, attach and fix the multiple supporting columns (2) of the column system to the 4th floor steel beam of the prefabricated steel structure building; drive the cantilever platform (4) to climb to the 3rd floor and install the protective mechanism of the prefabricated steel structure building; The cantilever platform (4) provides protection for the 3rd and 4th floors of the prefabricated steel structure building, and carries out the installation of steel reinforcement, PC components and concrete pouring for the 4th floor slab; at the same time, it completes the concrete core grouting work for the steel columns of the 2nd to 4th floors. This step also includes: concrete pouring: by installing a sleeve (32) on a standard section to form a connecting fulcrum, a Bailey truss (33) is installed on top of it, and a track is laid above the Bailey truss (33) for a mobile concrete placing boom (31) to slide; wherein the mobile concrete placing boom (31) is high enough to cover the entire area of ​​the floor plan operation, thereby enabling large-scale concrete pouring; S106 involves the installation of steel columns and beams on the 5th to 7th floors of prefabricated steel structure buildings, including the installation of secondary structures, plastering, waterproofing, and tower crane wall attachment procedures. This step also includes: ALC panel installation procedure: the construction workers stand above the construction platform, and the installation sequence is as follows: the wall panels at the door and window openings are installed sequentially from both ends. The two sides of the door openings use whole panels. The wall panels without door openings are installed sequentially from one end to the other. The bottom of the wall panel is fixed to the floor slab with pipe clamps or mortar. For the exterior wall panel, the top is connected to the steel beam with a sliding S-plate connection node, the side of the wall panel is connected to the steel column with flexible material, and the wall panel is connected to the wall with adhesive mortar. S107, repeat steps S103 to S106 until the cantilever platform (4) is raised to the top floor and the main structure construction of the prefabricated steel structure building is completed; The lifting operation platform for prefabricated steel structure buildings includes: The column system includes: multiple supporting columns (2) arranged around the outer contour of the prefabricated steel structure building (1); the supporting columns (2) are arranged in a vertical direction and are fixedly connected to the main steel beam of the prefabricated steel structure building (1) through a wall-mounted rod system (8); The climbing track (3) is set along the length of the support column (2); The cantilever platform (4) is slidably mounted on the support column (2) by means of the climbing track (3); and the cantilever platform (4) is arranged around the outer contour of the prefabricated steel structure building (1); After the main structure construction phase of the prefabricated steel structure building is completed, the exterior facade construction phase of the main structure of the prefabricated steel structure building will be carried out. The construction phase of the exterior facade of the prefabricated steel structure building includes the following steps: After cleaning the ALC wall surface, apply a layer of special interface agent, then apply plaster in two layers, then apply a waterproof layer, and finally attach the exterior using an adhesive anchoring method, that is, press a layer of hot-dip galvanized welded wire mesh in the middle and anchor it to the structural wall with anchor bolts, and then hang a real stone paint insulation and decoration integrated panel on the outside. S201, the top-floor exterior wall insulation and decoration integrated panel and exterior window of the prefabricated steel structure building are constructed through the cantilever platform (4); Control the cantilever platform (4) to descend from the top floor layer by layer, and carry out the construction of the exterior wall insulation and decoration integrated panel and exterior window of the prefabricated steel structure building from the top floor to the bottom floor in sequence; In the above process, the external wall insulation and decoration integrated panel at the attachment point of the support column (2) of the lifting operation platform is not constructed in this step. S202, control the cantilever platform (4) to move from the bottom floor to the floor below the top floor of the prefabricated steel structure building, and remove the support column (2) on the top floor. Then, carry out the construction of the external wall insulation and decoration integrated panel, gas and drainage pipes at the attachment point of the second-to-top floor of the prefabricated steel structure building. After that, complete the construction of the external wall insulation and decoration integrated panel, gas and drainage pipes at the attachment point of the climbing rail on each floor from the top floor to the bottom floor in sequence, so as to complete all the construction work of the prefabricated steel structure building.

2. The method for constructing the building structure of a prefabricated steel structure building according to claim 1, characterized in that, The number of cantilever platforms (4) is at least two, and the multiple cantilever platforms (4) divide the circumference of the prefabricated steel structure building (1) into multiple independent lifting units.

3. The method for constructing the building structure of a prefabricated steel structure building according to claim 1, characterized in that, The cantilever platform (4) includes: a Bailey bridge (5) and a platform walkway main structure (6) set on the Bailey bridge (5); a lifting drive mechanism (7) is provided on the Bailey bridge (5), and the lifting drive mechanism (7) is connected to the climbing track (3) to drive the cantilever platform (4) to lift.

4. The method for constructing the building structure of a prefabricated steel structure building according to claim 3, characterized in that, The climbing track (3) is a rack structure arranged along the length of the support column (2); the lifting drive mechanism (7) includes: a gear meshing and driving with the rack structure, and a drive motor for driving the gear to rotate.

5. The method for constructing the building structure of a prefabricated steel structure building according to claim 2, characterized in that, The supporting columns (2) are installed at corner positions on the exterior facade of the prefabricated steel structure building (1) at intervals of 3 to 12 meters; and / or, Each of the cantilever platforms (4) has a control system connected in communication with it to independently control the lifting and lowering of each of the cantilever platforms (4); and / or, The top and bottom of the support column (2) are also provided with limiting mechanisms, which are used to limit the movement range of the cantilever platform (4).

6. The method for constructing the building structure of a prefabricated steel structure building according to claim 1, characterized in that, The supporting column (2) is fixedly connected to the transverse supporting steel beam (9) of the prefabricated steel structure building (1) through the wall-mounted rod system (8).

7. The method for constructing the building structure of a prefabricated steel structure building according to claim 1, characterized in that, Each of the cantilever platforms (4) is drivenly connected to at least two of the supporting columns (2).

8. The method for constructing the building structure of a prefabricated steel structure building according to claim 1, characterized in that, Also includes: A protective mechanism is provided on the side of the cantilever platform (4) away from the prefabricated steel structure building (1) to protect the lifting operation platform; The protective mechanism includes: a suspended steel plate fixedly installed on the support column (2), and a protective mesh (10) installed on the suspended steel plate; multiple protective meshes (10) are installed on the suspended steel plate through connectors (30) to form a protective cover for the lifting operation platform.

9. The method for constructing the building structure of a prefabricated steel structure building according to claim 1, characterized in that, Also includes: Construction elevator system, including: elevator car and control mechanism; The elevator car is mounted on the prefabricated steel structure building (1).

10. The method for constructing the building structure of a prefabricated steel structure building according to claim 4, characterized in that, The lifting drive mechanism (7) further includes: a backrest wheel set on the mounting plate, and a safety hook set on the drive plate; the backrest wheel is used to drive the gear and the rack structure to mesh and connect; in addition, the safety hook is used to prevent the cantilever platform (4) from descending when the backrest wheel fails.

11. The method for constructing the building structure of a prefabricated steel structure building according to claim 4, characterized in that, The column system also includes a fixed base frame (11) corresponding to the cantilever platform (4); a rubber buffer (12) is provided on the fixed base frame (11), and the rubber buffer (12) is used to buffer the cantilever platform (4) when the brake of the lifting drive mechanism (7) fails.

12. The method for constructing the building structure of a prefabricated steel structure building according to claim 4, characterized in that, The standard section (13) constituting the column system is welded from square tubes, and adjacent standard sections (13) are fixedly connected by bolts; the standard section (13) is provided with the rack structure; the surface of the standard section (13) except for the rack structure is hot-dip galvanized. Furthermore, a lower limit baffle (14) is provided on the standard section (13) located at the bottom of the column system, and an upper limit baffle (14) is provided on the standard section (13) located at the top of the column system; when the lower limit baffle (14) and the upper limit baffle (14) touch the limit switch provided on the cantilever platform (4), the limit switch is activated and the cantilever platform (4) is safely and automatically stopped at the end position of the platform.

13. The method for constructing the building structure of a prefabricated steel structure building according to claim 6, characterized in that, The wall-mounted rod system (8) includes: a seamless round tube (15) with connecting nuts at both ends, a steel beam connecting plate (16) set on the transverse support steel beam (9) and threadedly connected to the end of the seamless round tube (15), and a column fitting (17) set on the column system and threadedly connected to the end of the seamless round tube (15).

14. The method for constructing the building structure of a prefabricated steel structure building according to claim 8, characterized in that, The protective mechanism also includes: uprights (20), and a reinforcing frame (21), a tripod (22), and scaffold boards (23) fixedly connected to the uprights (20); the reinforcing frame (21) is welded from angle steel and square tube to ensure the rigidity of the frame; the tripod (22) is welded from angle steel and square tube to connect the uprights (20) inside and outside the frame and the guide rail to ensure the rigidity of the frame; the scaffold boards (23) are made of patterned steel plate and square tube, and the bottom of the scaffold boards (23) is welded with longitudinal square tubes to install pull rods; the scaffold boards (23) are used to set the sealing treatment of the gap between the operating platform and the outer contour of the building at each construction stage, and the pull rods are suitable for effectively adjusting the distance between the platform and the building from the wall, ensuring the gap between the platform and the wall and the overall sealing performance.

15. The method for constructing the building structure of a prefabricated steel structure building according to claim 1, characterized in that, The cantilever platform (4) is composed of two Bailey panels (18) connected by a frame (19).

16. A method for installing a lifting operation platform, used for installing the lifting operation platform in the building construction method of the prefabricated steel structure building according to any one of claims 1 to 15, characterized in that, Includes the following steps: S1, Positioning and installation of the fixed base frame (11): The center position of the construction fixed base frame (11) is determined by using a ruler according to the positioning dimensions provided in the plan layout; wherein, the position of the fixed base frame (11) is first determined by the double column construction platform, and the position of the other fixed base frame (11) is determined by using this as a reference. S2, Installation of the standard section (13) and the lifting drive mechanism (7): The first installation steps of the standard section (13) are as follows: First, install the fixed base frame (11) and the lifting drive mechanism (7) combination structure on the first side position, and adjust the adjustable legs of the fixed base frame (11) to make the horizontal and vertical of the construction platform meet the construction requirements, and ensure the horizontality of the fixed base frame (11) by testing with a level. Then, the standard section (13) and the lifting drive mechanism (7) at the second side position and other positions are installed using the same method. Afterwards, the standard section (13) is extended. After the first two or three sections of the support column (2) and the platform section are installed and the control system is debugged, the standard section (13) is extended. S3, Installation of the cantilever platform system and safety mechanism: Install the first cantilever platform (4) on the left side, install the first cantilever platform section on the left side of the lifting drive mechanism (7) on the first side, and fix the lifting drive mechanism (7) of the cantilever platform section; when installing the cantilever platform section, first install the first frame (24), then install the second frame (25), and then install the fixed connecting frame (26), platform section connecting upright (27) and connecting diagonal brace (28) in sequence according to the dimensions of the construction platform plan layout drawing. Install the first cantilever platform (4) on the right side, install the first cantilever platform section on the right side of the lifting drive mechanism (7) on the first side, and fix the lifting drive mechanism (7) on the cantilever platform section; Install the cantilever platform (4) in the middle position, and make a support structure (29) at the bottom of the end of the cantilever platform (4) section in the middle position, so as to install the next platform section; Install the fixed base frame (11), lifting drive mechanism (7) assembly and cantilever platform (4) on the right side, install the fixed base frame (11) and lifting drive mechanism (7) assembly on the second side, adjust the adjustable legs of the fixed base frame (11) to ensure that the horizontal and verticality of the construction platform meet the construction requirements, and ensure the horizontality of the fixed base frame (11) by testing with a level; and install the corresponding cantilever platform (4). S4, Install the upper frame system: install the uprights (27), scaffold boards (23), reinforcing frame (21), and outer protective frame with protective netting (10) in sequence.

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