Steel structure high-altitude operation working method based on scaffold pipe hard protection
By assembling scaffolding steel pipes on the ground to form a railing-style protective structure and hoisting it into a single steel beam, the problems of low construction efficiency, poor safety, and difficulty in multi-person operation in high-altitude steel structure operations have been solved, realizing an efficient and safe high-altitude operation method.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SICHUAN NO 2 ELECTRIC POWER CONSTR CO
- Filing Date
- 2026-03-13
- Publication Date
- 2026-05-08
AI Technical Summary
Existing steel structure high-altitude operation protection methods suffer from low construction efficiency, poor safety, and difficulty in meeting the needs of multiple people working simultaneously.
The scaffolding steel pipes are assembled into a railing-style rigid protective structure, which serves as an anchoring device for the full-body safety belt and self-retracting fall arrestor. It forms an integrated hoisting unit with the steel beams and is hoisted to the design position as a whole by hoisting equipment, providing multi-point anchoring support during high-altitude operations.
It improves construction efficiency, reduces the risks of working at heights, ensures safety for multiple people working simultaneously, and the protective structure is reusable and economical.
Smart Images
Figure CN121992956A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of construction safety technology, and in particular relates to a working method for high-altitude operations on steel structures based on rigid protection of scaffolding pipes. Background Technology
[0002] During the construction of steel structure projects, after the steel beams, steel columns, and other components are hoisted, workers need to perform high-strength bolt installation, component alignment, connection and fixation, and related supporting work on the steel structure. This is a typical high-altitude operation with a significant risk of fall. In existing technologies, the following protective methods are typically used for high-altitude operations on steel structures: Personnel cage or suspended platform operation method: This method requires the use of a crane to lift the personnel cage or work platform separately, which occupies lifting resources, has a complicated operation process, and takes a long time for lifting, positioning and adjustment. In addition, it is inconvenient to move between different areas of the steel structure, resulting in low construction efficiency.
[0003] Lifeline protection methods: Lifelines usually need to be erected at high altitudes, and the erection period is long (according to local requirements, PE design and COS acceptance are required). The erection process itself carries the risk of falling, and it is difficult to meet the needs of multiple people working at the same time in a short period of time.
[0004] The existing protective methods described above are insufficient in terms of construction efficiency, safety, and flexibility, making it difficult to meet the requirements of large-scale steel structure projects for high efficiency, high safety, and simultaneous operation by multiple people. Therefore, it is necessary to provide a new method for working at heights on steel structures. Summary of the Invention
[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a method for high-altitude operations on steel structures based on rigid protection of scaffolding pipes, comprising the following steps: Step S1: Based on the dimensions, installation height, and construction conditions of the steel structure components, perform structural design and stress calculations on the protective structure, which is used as an anchoring device for the full-body safety belt and the self-contracting fall arrestor. Step S2: Select scaffolding steel pipes as the main load-bearing components of the protective structure; Step S3: Assemble the scaffolding steel pipes on the ground using fasteners or connectors to form a railing-type rigid protective structure. The protective structure is provided with multiple anchor points along its length, and each anchor point can be connected to a worker's full-body safety belt or fall arrestor. Step S4: Fix the assembled protective structure to the upper flange of the steel beam to be hoisted or to the preset installation position, so that the protective structure and the steel beam form an integrated hoisting unit; Step S5: Use hoisting equipment to hoist the steel beam with the protective structure to the design position. After the steel beam is in place, complete the bolt installation and connection fixation to ensure the overall stability of the steel beam and the protective structure. Step S6: After the steel beam is fixed, the workers connect to the anchor points of the protective structure, walk along the steel structure and carry out construction work; Step S7: After the steel structure work in this area is completed, the protective structure is dismantled or moved as the construction progresses, and then reused in other steel structure areas.
[0006] Furthermore, in step S1, the protective structure is designed and stress-calculated based on the dimensions, installation height, and construction conditions of the steel structure components. The protective structure is used as an anchoring device for the full-body safety belt and the self-contracting fall arrestor. During the design process, at least the self-weight load of the protective structure and the vertical and horizontal impact loads generated when the worker falls are considered, and the structural calculations are used to verify that it meets the safety requirements.
[0007] Furthermore, in step S2, the protective structure uses scaffolding steel pipes as the main load-bearing components, and the scaffolding steel pipes are preferably steel pipes with an outer diameter of 48-50mm and a wall thickness of 2.3-3.0mm.
[0008] Furthermore, in step S3, the scaffolding steel pipes are assembled on the ground using fasteners or connectors to form a railing-type rigid protective structure. The protective structure has multiple anchor points along its length, and each anchor point can be connected to a worker's full-body safety belt or fall arrestor, thereby meeting the needs of multiple workers to be secured and working simultaneously.
[0009] Furthermore, in step S4, the assembled protective structure is fixedly installed on the upper flange of the steel beam to be hoisted or at a preset installation position, so that the protective structure and the steel beam form an integrated hoisting unit. The steel beam includes, but is not limited to, UB-shaped steel, H-shaped steel or other common steel structure beam types.
[0010] Furthermore, in step S5, hoisting equipment is used to hoist the steel beam with the protective structure to the design position as a whole. After the steel beam is in place, bolts are inserted and connected to ensure the overall stability of the steel beam and the protective structure.
[0011] Furthermore, in step S6, after the steel beam is fixed, the workers connect the full-body safety belt or self-contracting fall arrestor to the anchor point of the protective structure, and walk along the steel structure and carry out relevant construction work under the rigid protection formed by the protective structure.
[0012] The present invention has the following beneficial effects: The protective structure of this invention is designed and calculated to withstand the vertical and horizontal impact loads caused by personnel falling, ensuring safety and reliability. The protective structure is erected on the ground, reducing the operational risks associated with erecting lifelines or protective facilities at heights. The protective structure is hoisted as an integrated unit with the steel beams, eliminating the need for separate hoisting procedures for the protective facilities and improving construction efficiency. The protective structure has multiple anchoring points, meeting the needs of multiple people working at heights simultaneously. The protective structure uses standard scaffolding steel pipes, offering strong versatility, reusability, and good economic efficiency. It is suitable for steel structure engineering construction scenarios with high safety requirements for working at heights.
[0013] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a flowchart illustrating a method for high-altitude operations on steel structures based on rigid protection of scaffolding pipes, according to the present invention. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.
[0017] Please see Figure 1 As shown, this invention is a working method for high-altitude operations on steel structures based on rigid protection of scaffolding pipes, comprising the following steps: Step S1: Based on the dimensions, installation height, and construction conditions of the steel structure components, perform structural design and stress calculations for the protective structure. The protective structure is used as an anchoring device for the full-body safety belt and the self-contracting fall arrestor. Step S2: Select scaffolding steel pipes as the main load-bearing components of the protective structure; Step S3: Assemble the scaffolding steel pipes on the ground using fasteners or connectors to form a railing-type rigid protective structure. The protective structure has multiple anchor points along its length, and each anchor point can be connected to a worker's full-body safety belt or fall arrestor. Step S4: Fix the assembled protective structure to the upper flange of the steel beam to be hoisted or to the preset installation position, so that the protective structure and the steel beam form an integrated hoisting unit; Step S5: Use hoisting equipment to hoist the steel beam with the protective structure to the design position. After the steel beam is in place, complete the bolt installation and connection fixation to ensure the overall stability of the steel beam and the protective structure. Step S6: After the steel beam is fixed, the workers connect to the anchor points of the protective structure, walk along the steel structure and carry out construction work; Step S7: After the steel structure work in this area is completed, the protective structure is dismantled or moved as the construction progresses, and then reused in other steel structure areas.
[0018] In step S1, the protective structure is designed and stress calculated based on the dimensions of the steel structure components, installation height, and construction conditions. The protective structure is used as an anchoring device for the full-body safety belt and the self-contracting fall arrestor. During the design process, at least the self-weight load of the protective structure and the vertical and horizontal impact loads generated when workers fall are considered, and the structural calculations are used to verify that it meets the safety requirements.
[0019] In step S2, the protective structure uses scaffolding steel pipes as the main load-bearing components. The scaffolding steel pipes are preferably steel pipes with an outer diameter of 48-50 mm and a wall thickness of 2.3-3.0 mm.
[0020] In step S3, the scaffolding steel pipes are assembled on the ground using fasteners or connectors to form a railing-type rigid protective structure. The protective structure has multiple anchor points along its length, and each anchor point can be connected to a worker's full-body safety belt or fall arrestor, thus meeting the needs of multiple workers to be secured and working at the same time.
[0021] In step S4, the assembled protective structure is fixedly installed on the upper flange of the steel beam to be hoisted or at a preset installation position, so that the protective structure and the steel beam form an integrated hoisting unit. The steel beam includes, but is not limited to, UB-shaped steel, H-shaped steel or other common steel structure beam types.
[0022] In step S5, hoisting equipment is used to hoist the steel beam with the protective structure to the design position. After the steel beam is in place, bolts are installed and the connection is fixed to ensure the overall stability of the steel beam and the protective structure.
[0023] In step S6, after the steel beam is fixed, the workers connect the full-body safety belt or self-contracting fall arrestor to the anchor point of the protective structure, and walk along the steel structure and carry out relevant construction work under the rigid protection formed by the protective structure.
[0024] One specific application of this embodiment is: This embodiment is applied to the high-altitude installation of steel beams in a large industrial steel structure plant project. The steel beams to be installed in this project are H-shaped steel beams, each 12m long and 22m high. The construction involves six workers simultaneously performing high-strength bolt installation, tightening, and component alignment in designated areas. The operation carries a risk of falls from height. The scaffolding pipe rigid protective steel structure high-altitude operation method of this invention is used to carry out the operation. The specific implementation steps are as follows: Step S1: Structural design and stress calculation of the protective structure Based on the dimensions of the H-beam (HN400×200) used in this construction project, the installation height of 22m, and the construction conditions of 6 people working simultaneously, a customized structural design and stress calculation were carried out for the protective structure. This protective structure serves as a dedicated anchoring device for the workers' full-body safety belts and self-contracting fall arresters.
[0025] During the design and calculation process, at least the self-weight load of the protective structure itself (calculated based on the total weight of the scaffolding steel pipes and fasteners actually selected), the vertical impact load generated when workers fall (calculated based on the standard value of human fall impact load), and the horizontal impact load (considering the horizontal force generated by workers moving and operating on the steel beams) are considered. The overall stability, component bearing capacity, and anchor pull-out resistance of the protective structure are verified by structural mechanics calculation software to verify that the protective structure fully meets the safety requirements for high-altitude operations. The total length of the protective structure is determined to be 12m, matching the length of the steel beams. Vertical support spacing is set at 3m, and anchor points are evenly distributed along the length direction.
[0026] Step S2: Selection of main load-bearing components of the protective structure The main load-bearing components of the protective structure are scaffolding steel pipes, specifically straight seam welded steel pipes with an outer diameter of 48.3mm and a wall thickness of 2.8mm. The steel pipe material is Q235 carbon structural steel, which meets the requirements for load-bearing and impact resistance.
[0027] Step S3: Ground assembly of the railing-style rigid protective structure The protective structure is assembled in the ground work area of the construction site to avoid the safety risks associated with high-altitude assembly. Cross couplers, swivel couplers, and butt couplers are used as connectors to assemble the selected scaffolding steel pipes into a railing-style rigid protective structure. The protective structure has two horizontal bars (0.6m and 1.2m high respectively), and the vertical support steel pipes are fastened to the horizontal bars with couplers. The bottom of the vertical support has a connection end that can be fixed to the upper flange of the steel beam.
[0028] Six anchor points are evenly set along the length of the protective structure. The anchor points are fixed to the horizontal crossbar with thickened fasteners. Each anchor point is an independent force-bearing node, which can be used by one worker to connect a full-body safety belt or a self-contracting fall arrestor, meeting the slinging needs of 6 people working at the same time.
[0029] Step S4: Integrated fixing of the protective structure and the steel beam The assembled and inspected rigid protective structure is fixed to the upper flange of the H-beam to be hoisted using special steel connectors. The connectors are fixed using a double fixing method of welding and high-strength bolts: first, the connectors are spot-welded to the upper flange of the steel beam for positioning; then, M16 high-strength bolts are used to tighten the bottom of the vertical support of the protective structure to the connectors; finally, the welded points are repaired and rust-proofed to ensure that the protective structure is firmly connected to the steel beam, forming an integrated hoisting unit. Before hoisting, the verticality and firmness of the entire unit are inspected.
[0030] Step S5: Overall hoisting and fixing of steel beams and protective structures A 25t truck crane was used as the lifting equipment to lift the assembled steel beam and protective structure integrated lifting unit as a whole. During the lifting process, a dedicated person was assigned to direct the operation, and a two-point lifting method was used to ensure the balance of the lifting and to prevent the protective structure from deforming or loosening due to tilting during the lifting.
[0031] After hoisting the lifting unit to the designed installation position of 22m, the steel beam is first positioned using temporary supports. Then, with the assistance of temporary protection, the workers complete the installation and initial tightening of high-strength bolts. After the steel beam is fully in place, the high-strength bolts are finally tightened to secure the steel beam and the steel column, ensuring the overall stability of the steel beam and the protective structure. After the hoisting and fixing are completed, all nodes and anchor points of the protective structure are checked again to confirm that there is no loosening or deformation.
[0032] Step S6: High-altitude construction operations based on protective structures After the steel beams and protective structure passed the acceptance inspection, the six workers connected their own full-body safety harnesses to the independent anchor points of the protective structure, and at the same time connected the hooks of the self-contracting fall arresters to the auxiliary straps of the safety harnesses. The other end of the fall arrester was also fixed to the anchor point, forming a double fall protection.
[0033] Workers walk along the H-shaped steel beams under the rigid protection provided by the protective structure, and carry out high-altitude operations such as final tightening of high-strength bolts, alignment of steel beam components, and inspection of welds in different areas. During the operation, the protective structure always provides reliable anchoring support for the workers to avoid the risk of falling.
[0034] Step S7: Dismantling, relocation, and reuse of the protective structure Once all high-altitude operations in the area of the H-beam are completed and accepted, a designated person will dismantle the protective structure, ensuring their own fall protection: first, remove the high-strength bolt connectors, then perform non-destructive cutting on the welded points (after cutting, apply rust prevention treatment to the cut area on the upper flange of the steel beam), and finally lower the dismantled protective structure to the ground using hoisting equipment.
[0035] After the scaffolding steel pipes, fasteners and connectors are lowered, they are inspected and cleaned. Slightly deformed components are corrected and damaged fasteners are replaced in time. Then the qualified protective structure is transferred to the steel beam to be hoisted in the adjacent area of the factory. Steps S4-S6 are repeated to realize the cyclic reuse of the protective structure.
[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0037] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims
1. A method for high-altitude operations on steel structures based on rigid protection of scaffolding pipes, characterized in that, Includes the following steps: Step S1: Based on the dimensions, installation height, and construction conditions of the steel structure components, perform structural design and stress calculations on the protective structure, which is used as an anchoring device for the full-body safety belt and the self-contracting fall arrestor. Step S2: Select scaffolding steel pipes as the main load-bearing components of the protective structure; Step S3: Assemble the scaffolding steel pipes on the ground using fasteners or connectors to form a railing-type rigid protective structure. The protective structure is provided with multiple anchor points along its length, and each anchor point can be connected to a worker's full-body safety belt or fall arrestor. Step S4: Fix the assembled protective structure to the upper flange of the steel beam to be hoisted or to the preset installation position, so that the protective structure and the steel beam form an integrated hoisting unit; Step S5: Use hoisting equipment to hoist the steel beam with the protective structure to the design position. After the steel beam is in place, complete the bolt installation and connection fixation to ensure the overall stability of the steel beam and the protective structure. Step S6: After the steel beam is fixed, the workers connect to the anchor points of the protective structure, walk along the steel structure and carry out construction work; Step S7: After the steel structure work in this area is completed, the protective structure is dismantled or moved as the construction progresses, and then reused in other steel structure areas.
2. The method for high-altitude operations on steel structures based on rigid protection of scaffolding pipes according to claim 1, characterized in that, In step S1, the protective structure is designed and stress calculated based on the dimensions, installation height, and construction conditions of the steel structure components. The protective structure is used as an anchoring device for the full-body safety belt and the self-contracting fall arrestor. During the design process, at least the self-weight load of the protective structure and the vertical and horizontal impact loads generated when the worker falls are considered, and the structural calculations are used to verify that it meets the safety requirements.
3. The method for high-altitude steel structure operations based on rigid protection of scaffolding pipes according to claim 1, characterized in that, In step S2, the protective structure uses scaffolding steel pipes as the main load-bearing components, and the scaffolding steel pipes are preferably steel pipes with an outer diameter of 48-50mm and a wall thickness of 2.3-3.0mm.
4. The method for high-altitude operations on steel structures based on rigid protection of scaffolding pipes according to claim 1, characterized in that, In step S3, the scaffolding steel pipes are assembled on the ground using fasteners or connectors to form a railing-type rigid protective structure. The protective structure has multiple anchor points along its length, and each anchor point can be connected to a worker's full-body safety belt or fall arrestor.
5. A method for high-altitude steel structure operations based on rigid protection of scaffolding pipes according to claim 1, characterized in that, In step S4, the assembled protective structure is fixedly installed on the upper flange of the steel beam to be hoisted or at a preset installation position, so that the protective structure and the steel beam form an integrated hoisting unit.
6. The method for high-altitude operations on steel structures based on rigid protection of scaffolding pipes according to claim 1, characterized in that, In step S5, the steel beam with the protective structure is hoisted to the design position using hoisting equipment, and the bolts are installed and fixed after the steel beam is in place.
7. A method for high-altitude steel structure operations based on rigid protection of scaffolding pipes according to claim 1, characterized in that, In step S6, after the steel beam is fixed, the workers connect the full-body safety belt or self-contracting fall arrestor to the anchor point of the protective structure, and walk along the steel structure and carry out construction work under the rigid protection formed by the protective structure.