Large-span steel structure temporary facility device and construction method

Abstract

The application relates to the technical field of building structure construction, in particular to a large-span steel structure temporary facility device and a construction method, which comprise a bottom module, a height-adjustable module, a platform module, an external supporting module and a stair module; the bottom module is arranged on a ground foundation; the lower end of the height-adjustable module is fixedly connected with the bottom module; the lower end of the platform module is fixedly connected with the upper end of the height-adjustable module; one end of the external supporting module is connected with the side wall of the height-adjustable module, and the other end is anchored on the ground foundation; the bottom module and the height-adjustable module are both rectangular space truss structures; the stair module is arranged in the internal space of the bottom module and the height-adjustable module and is fixedly connected with the bottom module and the height-adjustable module; the lower end of the stair module is flush with the ground foundation, the upper end is flush with and communicates with the bottom of the platform module, and the stair module is used for enabling workers to enter the platform module from the ground to carry out work.

Description

Technical Field

[0001] This invention relates to the field of building structure construction technology, and in particular to a temporary facility device and construction method for a large-span steel structure. Background Technology

[0002] Large-span steel structures are widely used in large public buildings such as stadiums, airport terminals, and convention centers. These structures are often characterized by complex shapes, extremely heavy and large components, and extremely high installation precision requirements. Traditional fixed support frames or full-span scaffolding suffer from poor design versatility, low installation and dismantling efficiency, difficulties in material turnover, and poor economic efficiency, making it difficult to meet the stringent requirements of modern large-scale projects for construction safety, efficiency, and cost control.

[0003] Therefore, the industry urgently needs a standardized, modular, and reusable temporary support system. This is precisely to adapt to the changing needs of different projects by designing a support system composed of standard components that can be flexibly assembled and adjusted like "building blocks," enabling rapid erection and dismantling, precise positioning and adjustment, thereby significantly improving the level of construction industrialization, reducing costs, and ensuring the safety and reliability of the construction process. The evolution of this technology has also benefited from the widespread adoption of BIM (Building Information Modeling) technology, making it possible to digitally simulate and optimize the scaffold layout, stress analysis, and hoisting process before construction. Summary of the Invention

[0004] The purpose of this invention is to provide a temporary facility device and construction method for large-span steel structures to solve at least one of the technical problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides 1. a temporary facility device for a large-span steel structure, characterized in that it includes a bottom module, a height-adjustable module, a platform module, an external support module, and a stair module; The bottom module is set on the ground foundation; The lower end of the height-adjustable module is fixedly connected to the bottom module; The lower end of the platform module is fixedly connected to the upper end of the height-adjustable module; One end of the external support module is connected to the side wall of the height-adjustable module, and the other end is anchored to the ground foundation. Both the bottom module and the height-adjustable module are rectangular space truss structures. The staircase module is disposed in the internal space of the bottom module and the height-adjustable module, and is fixedly connected to the bottom module and the height-adjustable module. The lower end of the staircase module is flush with the ground foundation, and the upper end is flush with and connected to the bottom of the platform module, allowing workers to enter the platform module from the ground to carry out operations. The staircase module consists of multiple detachable steel staircase units to accommodate different height adjustment needs.

[0006] Furthermore, the bottom module includes a first planar member, a second planar member, and a first web member connecting the two; The first planar member and the second planar member are arranged in parallel and are rigidly connected by multiple first web members.

[0007] Furthermore, the height-adjustable module includes a third planar member, a fourth planar member, and a second web member connecting the two; The third planar member and the fourth planar member are arranged in parallel, and the two are rigidly connected by multiple second web members.

[0008] Furthermore, both the third planar component and the fourth planar component are integrated multi-segment structures. The appropriate number of segments of the third planar component and the fourth planar component are selected and assembled according to the actual height requirements.

[0009] Furthermore, it also includes supplementary internal support modules; The supplementary internal support module is disposed on the bottom module and the height-adjustable module, and is used to enhance the local stiffness and improve the overall stability of the rectangular space truss structure.

[0010] Furthermore, the bottom module and the height-adjustable module are connected via a first connecting pair; The first connecting pair includes a first connecting plate preset at the upper end of the bottom module and a second connecting plate disposed at a corresponding position at the lower end of the height-adjustable module; The first connecting plate and the second connecting plate are provided with bolt holes, and the bottom module and the height adjustable module are rigidly connected by fastening with high-strength bolts.

[0011] Furthermore, the height-adjustable module and the platform module are connected via a connecting sleeve; The connecting sleeve is a hollow tubular structure and is set vertically. Its lower end is fitted onto the top of the height-adjustable module, and the lower end of the platform module is inserted into the upper end of the connecting sleeve.

[0012] Furthermore, the height-adjustable module 2 and the platform module 3 are respectively provided with a lower axial limiting block and an upper axial limiting block; The lower end of the connecting sleeve abuts against the lower axial limiting block, and the upper end abuts against the upper axial limiting block, thereby restricting the axial displacement of the connecting sleeve.

[0013] Furthermore, the upper end of the connecting sleeve is provided with a flipping guide structure; The flipping guide structure includes a flipping plate and a rotating pin; The flip plate is rotatably connected to the extension plate extending from the upper end of the connecting sleeve via a rotating pin. The rotating pin divides the flip plate into a long arm end and a short arm end; In the initial state, the long arm end hangs naturally downwards under the force of gravity and abuts against the outer wall of the connecting sleeve, while the short arm end is tilted upwards and located above the internal space of the connecting sleeve. When the lower end of the platform module is inserted into the connecting sleeve, the lower end of the platform module first contacts the short arm end, forcing it to rotate downwards around the rotating pin, which drives the long arm end to rise upwards and move closer to the platform module, ultimately making the long arm end fit tightly against the side wall of the platform module to form a hug.

[0014] On the other hand, this application also discloses a construction method for a temporary facility device with a large span steel structure, including the following steps: S1: Connect the bottom module S2: Adjustable splicing height module S3: Assembly platform module; S4: Hoist the bottom module; S5: Adjustable hoisting height module, and connect the adjustable height module to the bottom module; S6: Install external support module; S7: Lifting platform module, and connect the platform module to the height adjustable module. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a large-span steel structure temporary facility device disclosed in this application; Figure 2 This is a three-dimensional structural diagram of a large-span steel structure temporary facility device after disassembly, as disclosed in this application. Figure 3 A three-dimensional structural diagram showing how the first planar component of the bottom module is placed on the mounting fixture and clamped using a crane. Figure 4 A three-dimensional structural diagram of the first web member for lifting and installing the bottom module; Figure 5 A three-dimensional structural diagram of a steel ladder with its bottom module installed. Figure 6 A three-dimensional structural diagram of the second planar component for mounting the bottom module on the first web member; Figure 7 A three-dimensional structural diagram of the internal support module for installing the bottom module; Figure 8 A three-dimensional structural diagram showing how a crane is used to place the third plane component of the height-adjustable module onto a mounting fixture for clamping. Figure 9 A three-dimensional structural diagram of the second web member for lifting and installing the height-adjustable module; Figure 10 A three-dimensional structural diagram of the rest platform with adjustable height modules and the internal steel ladder; Figure 11 A three-dimensional structural diagram of the fourth planar component for mounting a height-adjustable module on the second web member; Figure 12 A three-dimensional structural diagram of the internal support module for installing the height-adjustable module; Figure 13 A schematic diagram of the three-dimensional structure of the splicing platform module; Figure 14 This is a structural diagram showing how the bottom module is gradually moved from a horizontal position to a vertical position. Figure 15 A three-dimensional structural diagram of the bottom module being hoisted; Figure 16 This is a structural diagram of the adjustable hoisting height module; Figure 17 This is a three-dimensional structural diagram of the staircase module within the height-adjustable module; Figure 18 A schematic diagram of the structure for installing the external support module; Figure 19 This is a structural schematic diagram of the hoisting platform module; Figure 20 This is a three-dimensional structural diagram of the first connecting pair; Figure 21 This is a three-dimensional structural diagram of the connecting sleeve; Figure 22 This is a sectional view after the connecting sleeve has been fitted. Figure 23 A cross-sectional view of the connecting sleeve with air cavity after it has been fitted. Figure 24 This is a planar sectional view of the adjusting bolt. Figure 25 This is a three-dimensional sectional view of the adjusting bolt.

[0017] Figure label: 1- Bottom module; 2- Height-adjustable module; 3- Platform module; 4- External support module; 5- Ground foundation; 6- Staircase module; 7- First planar component; 8- Second planar component; 9- First web member; 10- Third planar component; 11- Fourth planar component; 12- Second web member; 13- Supplementary internal support module; 14- First connecting pair; 15- First connecting plate; 16- Second connecting plate; 17- High-strength bolt; 18- Connecting sleeve; 19- Flipping guide structure; 20- Upper axial limiting block; 21- Lower axial limiting block; 22- Flipping plate; 23- Rotating pin; 24- Long arm end; 25- Short arm end; 26- Air chamber; 27- Ventilation channel; 28- Adjusting bolt; 29- First channel; 30- Second channel; 31- Blocking component; 32- Screw groove; 33- Columnar body; 34- Plug; 35- Extension plate. Detailed Implementation

[0018] 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.

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] It should also be noted that the specific embodiments or implementation methods described below are a series of optimized settings listed by the present invention to further explain the specific content of the invention, and these settings can be combined or used in conjunction with each other.

[0022] The present invention will be further explained below with reference to specific embodiments.

[0023] Example 1 like Figure 1-20 As shown, this embodiment provides a temporary facility device for a large-span steel structure, including a bottom module 1, a height-adjustable module 2, a platform module 3, and an external support module 4; The bottom module 1 is mounted on the ground foundation 5; The lower end of the height-adjustable module 2 is fixedly connected to the bottom module 1; The lower end of the platform module 3 is fixedly connected to the upper end of the height-adjustable module 2; One end of the external support module 4 is connected to the side wall of the height-adjustable module 2, and the other end is anchored to the ground foundation 5.

[0024] This application discloses a large-span steel structure temporary facility that typically requires rapid installation, safety, stability, and easy recycling in engineering projects. The structure of this application mainly comprises three core functional modules in the vertical direction: the bottom module 1 provides foundation support and leveling functions; the height-adjustable module 2 provides precise height adaptation for the platform module 3 in the vertical direction; and the platform module 3 bears the operational load and ensures the integrity of its functionality. The three modules work together to significantly improve the overall structure's assembly efficiency and adaptability to different working conditions.

[0025] As a further embodiment of this example, both the bottom module 1 and the height-adjustable module 2 are rectangular space truss structures.

[0026] In this application, the overall structure adopts a rectangular space truss form to form a three-dimensional force system with uniform stiffness and clear force transmission in the vertical arrangement. The axial force of each member is the main force, which effectively suppresses lateral deformation.

[0027] As a further embodiment of this invention, a staircase module 6 is also included; The staircase module 6 is disposed in the internal space of the bottom module 1 and the height-adjustable module 2, and is fixedly connected to the interior of the bottom module 1 and the height-adjustable module 2; The lower end of the staircase module 6 is flush with the ground foundation 5, and the upper end is flush with and connected to the bottom of the platform module 3, so that workers can enter the platform module 3 from the ground to carry out operations.

[0028] As a further embodiment of this invention, the staircase module 6 is composed of multiple detachable steel ladder units to adapt to different height adjustment requirements.

[0029] In this application, because the height-adjustable module 2 is customized to the actual needs of the construction site, the staircase module 6 is designed as a multi-section detachable steel ladder unit. This ensures both passage safety and precise matching with height adjustment. Each additional section of the height-adjustable module 2 is accompanied by an additional steel ladder section, making the overall assembly logic rigorous and the error close to zero. This collaborative mechanism of "modules changing with height" not only eliminates the redundant procedures of repeated dismantling and modification in traditional temporary facilities, but also compresses the project response to the shortest possible time.

[0030] As a further embodiment of this embodiment, the bottom module 1 includes a first planar member 7, a second planar member 8, and a first web member 9 connecting the two; The first planar member 7 and the second planar member 8 are arranged in parallel and are rigidly connected by multiple first web members 9.

[0031] As a further embodiment of this embodiment, the height-adjustable module 2 includes a third planar component 10, a fourth planar component 11, and a second web member 12 connecting the two. The third planar member 10 and the fourth planar member 11 are arranged in parallel and are rigidly connected by multiple second web members 12.

[0032] As a further embodiment of this example, the third planar component 10 and the fourth planar component 11 are both integrated multi-segment structures. The third planar component 10 and the fourth planar component 11 with the corresponding number of segments are selected and assembled according to the actual height requirements.

[0033] As a further implementation of this embodiment, an additional internal support module 13 is also included; The supplementary internal support module 13 is disposed on the bottom module 1 and the height adjustable module 2, and is used to strengthen the local stiffness and improve the overall stability of the rectangular space truss structure.

[0034] In this application, both the bottom module 1 and the height-adjustable module 2 are assembled by laying them down and then vertically hoisting them. During the laying-down assembly, the bottom module 1 uses the first planar member 7, which lies flat downwards, as its reference plane. The first web member 9 is welded upwards, and the second planar member 8 is positioned at the top of the web member, forming a rectangular truss structure. The height-adjustable module 2 uses the third planar member 10 as its reference plane. The second web member 12 is welded upwards, and the fourth planar member 11 is positioned at the top of the web member, completing the unit pre-assembly. During the assembly process, a supplementary internal support module 13 is added. This supplementary internal support module 13 includes support rods and support frames, etc., and is used to provide directional reinforcement to weak nodes of the rectangular spatial truss. This support method is existing technology in the engineering field, and this application can use existing support methods without further limiting descriptions. In this embodiment, the number of sections of the height-adjustable module 2 is selected according to site requirements, as shown in the attached figure. Figure 1 The height-adjustable module 2 shown has four sections.

[0035] like Figure 20 As shown, in a further embodiment of this example, the bottom module 1 and the height-adjustable module 2 are connected by a first connecting pair 14; The first connecting pair 14 includes a first connecting plate 15 preset at the upper end of the bottom module 1 and a second connecting plate 16 disposed at the corresponding position at the lower end of the height adjustable module 2; The first connecting plate 15 and the second connecting plate 16 are provided with bolt holes, and the bottom module 1 and the height adjustable module 2 are rigidly connected by fastening with high-strength bolts 17.

[0036] By adopting the above technical solution, the present invention has the following beneficial effects: (1) Vertically, it includes three core functional modules: bottom, height adjustable, and platform. The synergistic effect significantly improves the overall structural assembly efficiency and can accurately adapt to the height requirements of platform module 3 under different working conditions.

[0037] (2) The whole structure adopts a rectangular space truss form, forming a three-dimensional force system with uniform stiffness and clear force transmission in the vertical arrangement. Each member is mainly subjected to axial force, which effectively suppresses lateral deformation and enhances structural stability.

[0038] (3) The stair module 6 is composed of multiple detachable steel ladder units, which can adapt to different height adjustment needs, ensure passage safety and achieve precise matching with height adjustment. Each time a height-adjustable module 2 is added, a steel ladder is added simultaneously. The assembly logic is rigorous and the error is small, eliminating the redundant process of repeated dismantling and modification of traditional temporary facilities and shortening the project response time.

[0039] (4) The planar components of the bottom module 1 and the height adjustable module 2 adopt an integrated multi-segment structure, and the corresponding number of segments can be selected and assembled according to the actual height requirements; both are laid down and spliced ​​and then vertically hoisted, and welded and assembled with the planar components as the reference surface, which is convenient to operate.

[0040] (5) A supplementary internal support module 13 is set up to provide directional reinforcement to the weak nodes of the rectangular space truss structure, thereby improving local stiffness and overall stability.

[0041] (6) The bottom module 1 and the height adjustable module 2 are rigidly connected by the first connecting pair 14 and high-strength bolts 17, and the connection is reliable.

[0042] Example 2 like Figure 21-25 As shown, this embodiment provides a temporary facility device for a large-span steel structure, which is a further refinement and supplement based on the structure of Embodiment 1.

[0043] The height-adjustable module 2 and the platform module 3 are connected by a connecting sleeve 18; The connecting sleeve 18 is a hollow tubular structure and is set vertically. Its lower end is fitted onto the top of the height-adjustable module 2, and the lower end of the platform module 3 is inserted into the upper end of the connecting sleeve 18.

[0044] As a further embodiment of this example, the height-adjustable module 2 and the platform module 3 are respectively provided with a lower axial limiting block 21 and an upper axial limiting block 20; The lower end of the connecting sleeve 18 abuts against the lower axial limiting block 21, and the upper end abuts against the upper axial limiting block 20, thereby restricting the displacement of the connecting sleeve 18 in the axial direction.

[0045] As a further embodiment of this embodiment, a flipping guide structure 19 is provided at the upper end of the connecting sleeve 18; The flipping guide structure 19 includes a flipping plate 22 and a rotating pin 23; The flip plate 22 is rotatably connected to the extension plate 35 extending from the upper end of the connecting sleeve 18 via a rotating pin 23. The rotating pin 23 divides the flip plate 22 into a long arm end 24 and a short arm end 25. In the initial state, the long arm end 24 hangs down naturally at an angle under the action of gravity and abuts against the outer wall of the connecting sleeve 18, while the short arm end 25 is tilted upward and located above the internal space of the connecting sleeve 18. When the lower end of the platform module 3 is inserted into the connecting sleeve 18, the lower end of the platform module 3 first contacts the short arm end 25, forcing it to rotate downward around the rotating pin 23, which drives the long arm end 24 to rise upward and move closer to the platform module 3, ultimately making the long arm end 24 tightly hug the side wall of the platform module 3.

[0046] As a further embodiment of this embodiment, the connecting sleeve 18 is provided with an air chamber 26 and a venting channel 27. The air chamber 26 is located on the inner wall of the connecting sleeve 18, and the vent 27 connects the air chamber 26 with the outside atmosphere; The junction plane of the height-adjustable module 2 and the platform module 3 is located within the horizontal height range of the air cavity 26. When the height-adjustable module 2 and the platform module 3 approach each other, the air in the connecting sleeve 18 is compressed and slowly discharged through the ventilation channel 27, forming a controllable damping effect, effectively buffering the impact of the platform module 3 falling.

[0047] As a further embodiment of this embodiment, the end of the vent 27 away from the air chamber 26 is provided with an internal thread; After the height-adjustable module 2 and the platform module 3 are docked, the gas flow of the ventilation channel 27 is restricted by screwing the adjusting bolt 28 into the internal thread end.

[0048] As a further embodiment of this example, the adjusting bolt 28 includes a first channel 29, a second channel 30, a plug 31, and a screw groove 32.

[0049] The screw groove 32 is located at the center of the outer side of the adjusting bolt 28 and is used to tighten it with an external tool. Both the first channel 29 and the second channel 30 axially penetrate the body of the adjusting bolt 28; The second channel 30 is located at the center of the adjusting bolt 28 and overlaps with the screw groove 32 at its end; The first channel 29 is eccentrically positioned within the adjusting bolt 28, and the diameter of the first channel 29 is smaller than the diameter of the second channel 30; When the adjusting bolt 28 is screwed into the vent 27, the blocking member 31 is inserted into the second channel 30. During the insertion process, the blocking member 31 is pushed along the second channel 30, and the gas is discharged through the first channel 29.

[0050] As a further embodiment of this embodiment, the plugging component 31 includes an integrally connected columnar body 33 and plug head 34; The outer diameter of the columnar body 33 matches the inner diameter of the second channel 30, and its length is consistent with the depth of the second channel 30. The plug 34 has a larger diameter than the cylindrical body 33 and is used to abut against the port of the second channel 30.

[0051] In this application, during the insertion of the height-adjustable module 2 and the platform module 3 into the connecting sleeve 18, air in the air chamber 26 is continuously discharged through the vent 27. At this time, a stable airflow resistance is formed at the vent 27, allowing the module docking speed to be controlled and preventing structural deformation or connection failure due to instantaneous impact. After docking is completed, the adjusting bolt 28 is screwed into the vent 27. During the screwing process, torque is applied to the screw groove 32 using an external tool. After removing the external tool, the blocking member 31 is pushed into the second channel 30. The cylindrical body 33 of the blocking member 31 is completely embedded in the second channel 30, improving the structural stability of the adjusting bolt 28. During this process, air is continuously discharged through the first channel 29. At this point, the air pressure inside the connecting sleeve 18 tends to balance, and the damping effect changes from dynamic adjustment to static locking. When the platform module 3 experiences slight vertical displacement due to earthquakes or other factors, the first channel 29 maintains micro-ventilation to provide necessary deformation buffer space for the structure, while continuously generating micro-damping through its narrow cross-section, effectively reducing vibration energy transmission and significantly improving the overall structure's seismic stability and long-term service reliability. In extreme cases, the pressure difference between the inside and outside of the connecting sleeve suddenly increases. At this time, the plug 31 is pulled apart, and the columnar body 33 of the plug 31 is drawn into the air chamber 26, while the plug 34 falls off. At this point, the second channel 30 is fully open, and the air chamber 26 is instantly connected to the outside, quickly releasing pressure to relieve overload stress. Because gas damping is used for pull-out resistance, there is no need to set bolts or other perforated connection structures in the longitudinal direction, avoiding the weakening of the rigidity of the module body through perforation, and avoiding the risk of connection failure caused by loose bolts. When disassembly is required, the plug 31 is first pulled out. During this process, the gas slowly flows back through the first channel 29 to balance the pressure difference. After the blocking component 31 is removed, the screw slot 32 is exposed. The adjusting bolt 28 can be unscrewed using conventional tools to reopen the vent 27. The platform module 3 can then be lifted smoothly using hoisting equipment. External gas enters the air chamber 26 through the vent 27, completing the module separation. If the platform module 3 suddenly falls due to operational errors or damage to the hoisting structure during the lifting process, a negative pressure damping effect is instantly formed in the vent 27, slowing down the descent and preventing a hard collision between the platform module 3 and the height-adjustable module 2. This adds another pneumatic buffer barrier for safety redundancy and also facilitates the multiple recovery and reuse of the various structures in this application, significantly reducing the overall life-cycle maintenance cost.

[0052] By adopting the above technical solution, the present invention has the following beneficial effects: (1) The height-adjustable module 2 and the platform module 3 are connected by the connecting sleeve 18, and the lower and upper axial limit blocks 20 are set to effectively limit the axial displacement of the connecting sleeve 18, ensuring that the module connection is stable and the position is accurate.

[0053] (2) A flip guide structure 19 is provided at the upper end of the connecting sleeve 18. When the platform module 3 is inserted, the flip plate 22 automatically rotates to form a clamp, providing guidance and fixing for the platform module 3, making the installation process more convenient and accurate, and reducing the installation difficulty and time.

[0054] (3) An air chamber 26 and a ventilation channel 27 are provided inside the connecting sleeve 18. When the modules are close to each other, the air is compressed and discharged to form a controllable damping effect, which effectively buffers the impact of the platform module 3 falling, avoids structural deformation or connection failure, and protects the structural safety of the device.

[0055] (4) The ventilation channel 27 is provided with an internal thread, which can be screwed into the adjusting bolt 28 to limit the gas flow. It can also be further adjusted by inserting the plug 31 into the second channel 30 of the adjusting bolt 28 to achieve dynamic adjustment and static locking of the damping effect, so as to meet the needs of different working conditions.

[0056] (5) When the platform module 3 undergoes slight displacement due to factors such as earthquakes, the micro-ventilation of the first channel 29 provides deformation buffer space for the structure and generates micro-damping, which reduces the transmission of vibration energy and significantly improves the seismic stability and long-term service reliability of the overall structure.

[0057] (6) In extreme cases, when the pressure difference between the inside and outside of the connecting sleeve increases suddenly, the plug 31 is pulled off to achieve rapid pressure relief, release overload stress, prevent damage to the device, and ensure safe use.

[0058] (7) Gas damping is used to resist pull-out, and there is no need to set bolts or other perforated connection structures in the longitudinal direction. This avoids weakening the rigidity of the module body by perforation, avoids the risk of connection failure caused by loose bolts, and improves the overall strength and reliability of the structure.

[0059] (8) When disassembling, follow specific steps: first pull out the blockage 31 to balance the pressure difference, then unscrew the adjusting bolt 28 and use gas backflow to complete the module separation; if the platform module 3 suddenly falls when it is lifted, the negative pressure damping of the ventilation channel 27 can slow down the falling speed, avoid hard collision, provide safety redundancy for the device, and facilitate multiple recycling and reuse, reducing the maintenance cost of the whole life cycle.

[0060] Example 3 like Figure 3-19 As shown in the figure, this embodiment provides a construction method for a temporary facility device for a large-span steel structure, including the following steps: S1: Connect the bottom module S2: Adjustable splicing height module S3: Assembly platform module; S4: Hoist the bottom module; S5: Adjustable hoisting height module, and connect the adjustable height module to the bottom module; S6: Install external support module; S7: Lifting platform module, and connect the platform module to the height adjustable module.

[0061] As a further implementation of this embodiment, step S1 specifically includes: S11: The first planar component of the bottom module is placed on the mounting fixture and clamped using a crane; S12: The first bracing rod for lifting and installing the bottom module; S13: Steel ladder with bottom module installed; S14: Install the second planar member of the bottom module on the first web member; S15: Internal support module (external crossbeam) for installing the bottom module.

[0062] As a further implementation of this embodiment, step S2 specifically includes: S21: The third plane component of the height-adjustable module is placed on the mounting fixture and clamped using a crane; S22: Lift and install the second web member of the height-adjustable module; S23: Resting platform with height-adjustable module and internal steel ladder; S24: A fourth planar component on which a height-adjustable module is installed on the second web member; S25: Internal support module (support fence) for installing height-adjustable modules.

[0063] As a further implementation of this embodiment, step S3 specifically includes: S31: Grating and handrails of the load-bearing structure of the installation platform module; S32: Install the uprights of the platform module support frame and temporarily fix them to the bed fixture with bolts; S33: Connectors between columns of the mounting platform module support frame and external cantilever platform; S34: Platform grid panels and handrails for installing platform module support frame columns; S35: The platform base component assembled in step S31 is installed; S36: Internal and external diagonal braces for mounting platform modules.

[0064] As a further implementation of this embodiment, step S4 specifically includes: S41: Gradually change the bottom module from a horizontal position to a vertical position; S42: Hoist the bottom module and fix it to the anchor bolts by connecting nuts, then you can start welding the steel blocks.

[0065] As a further implementation of this embodiment, step S5 specifically includes: S51: Adjustable hoisting height module, which is fixed to the anchor bolt by a nut connection and welded with a steel block; S52: Install diagonal supports between the bottom module and the height-adjustable module; S53: External supports are installed via bolt connections; S54: Install the ladder in the second adjustable module.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A temporary facility device for a large-span steel structure, characterized in that, It includes a bottom module, a height-adjustable module, a platform module, an external support module, and a stair module; The bottom module is set on the ground foundation; The lower end of the height-adjustable module is fixedly connected to the bottom module; The lower end of the platform module is fixedly connected to the upper end of the height-adjustable module; One end of the external support module is connected to the side wall of the height-adjustable module, and the other end is anchored to the ground foundation. Both the bottom module and the height-adjustable module are rectangular space truss structures. The staircase module is disposed in the internal space of the bottom module and the height-adjustable module, and is fixedly connected to the bottom module and the height-adjustable module. The lower end of the staircase module is flush with the ground foundation, and the upper end is flush with and connected to the bottom of the platform module, allowing workers to enter the platform module from the ground to carry out operations. The staircase module consists of multiple detachable steel staircase units to accommodate different height adjustment needs.

2. The temporary facility device for large-span steel structures according to claim 1, characterized in that, The bottom module includes a first planar member, a second planar member, and a first web member connecting the two. The first planar member and the second planar member are arranged in parallel and are rigidly connected by multiple first web members.

3. The temporary facility device for large-span steel structures according to claim 1, characterized in that, The height-adjustable module includes a third planar component, a fourth planar component, and a second web member connecting the two. The third planar member and the fourth planar member are arranged in parallel, and the two are rigidly connected by multiple second web members.

4. The temporary facility device for large-span steel structures according to claim 5, characterized in that, Both the third planar component and the fourth planar component are integrated multi-segment structures. The appropriate number of segments of the third planar component and the fourth planar component are selected and assembled according to the actual height requirements.

5. The temporary facility device for large-span steel structures according to claim 1, characterized in that, It also includes supplementary internal support modules; The supplementary internal support module is disposed on the bottom module and the height-adjustable module, and is used to enhance the local stiffness and improve the overall stability of the rectangular space truss structure.

6. The temporary facility device for large-span steel structures according to claim 1, characterized in that, The bottom module and the height-adjustable module are connected via a first connecting pair; The first connecting pair includes a first connecting plate preset at the upper end of the bottom module and a second connecting plate disposed at a corresponding position at the lower end of the height-adjustable module; The first connecting plate and the second connecting plate are provided with bolt holes, and the bottom module and the height adjustable module are rigidly connected by fastening with high-strength bolts.

7. The temporary facility device for large-span steel structures according to claim 1, characterized in that, The height-adjustable module and the platform module are connected by a connecting sleeve. The connecting sleeve is a hollow tubular structure and is set vertically. Its lower end is fitted onto the top of the height-adjustable module, and the lower end of the platform module is inserted into the upper end of the connecting sleeve.

8. The temporary facility device for large-span steel structures according to claim 7, characterized in that, The height-adjustable module 2 and the platform module 3 are respectively provided with a lower axial limiting block and an upper axial limiting block; The lower end of the connecting sleeve abuts against the lower axial limiting block, and the upper end abuts against the upper axial limiting block, thereby restricting the axial displacement of the connecting sleeve.

9. The temporary facility device for large-span steel structures according to claim 7, characterized in that, The upper end of the connecting sleeve is provided with a flipping guide structure; The flipping guide structure includes a flipping plate and a rotating pin; The flip plate is rotatably connected to the extension plate extending from the upper end of the connecting sleeve via a rotating pin. The rotating pin divides the flip plate into a long arm end and a short arm end; In the initial state, the long arm end hangs naturally downwards under the force of gravity and abuts against the outer wall of the connecting sleeve, while the short arm end is tilted upwards and located above the internal space of the connecting sleeve. When the lower end of the platform module is inserted into the connecting sleeve, the lower end of the platform module first contacts the short arm end, forcing it to rotate downwards around the rotating pin, which drives the long arm end to rise upwards and move closer to the platform module, ultimately making the long arm end fit tightly against the side wall of the platform module to form a hug.

10. A construction method for a large-span steel structure temporary facility device according to any one of claims 1-9, comprising the steps of: S1: Connect the bottom module S2: Adjustable splicing height module S3: Assembly platform module; S4: Hoist the bottom module; S5: Adjustable hoisting height module, and connect the adjustable height module to the bottom module; S6: Install external support module; S7: Lifting platform module, and connect the platform module to the height adjustable module.

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