A method for setting up a construction platform

Abstract

This invention discloses a method for deploying a construction platform. This method involves laying a movable working channel on horizontal members with load-bearing capacity beneath the main steel structure, and installing an adjustable suspended structure and a suspended operating platform above the main steel structure. This allows the working channel and operating platform to move synchronously forward along the track construction direction, thereby constructing a continuous, stable, and movable high-altitude construction system even in the absence of a fixed working reference plane. This construction platform deployment method effectively adapts to construction conditions such as large steel structure spans, inconsistent support point spacing, significant elevation changes, and complex members. While ensuring the safety of construction personnel, it improves the construction continuity, installation accuracy, and overall construction efficiency of the inspection robot track system, reducing the risk of repeated adjustments and rework.

Description

Technical Field

[0001] This invention belongs to the field of intelligent inspection equipment technology, specifically relating to a method for deploying a construction platform. Background Technology

[0002] The installation of inspection robot track systems within steel structure spaces involves high-altitude operations. These spaces generally lack accessible manual maintenance access routes, and a significant height difference exists between the track installation elevation and the reachable positions of workers. Without a stable working platform, workers struggle to reach and accurately adjust track points, hindering both construction safety and installation controllability. Furthermore, the densely packed and complex structures within these concealed steel structures, along with varying ceiling heights, restrict access in certain areas, making it difficult to create continuous and stable work channels. The deployment of conventional large-scale construction equipment and traditional scaffolding systems in these spaces is also limited, failing to establish continuous work channels and thus failing to meet the deployment requirements of the inspection track system.

[0003] The suspended ceiling system lies beneath the main steel structure, and its structural design only considers its own load, failing to withstand the additional loads generated by construction workers and material stacking. Placing the construction platform above this suspended ceiling structure would easily lead to structural safety hazards. Therefore, the construction platform must be installed using horizontal steel structural members with sufficient load-bearing capacity. However, the arrangement of available load-bearing members and the spacing of support points within the steel structure space are often inconsistent. Traditional fixed-size or fixed-point construction platforms are difficult to adapt to different span conditions, failing to guarantee the continuity and operational safety of the construction platform. Furthermore, the main steel structure typically lacks standard fixed points or unified installation benchmarks for the installation of inspection robot tracks during the design phase, especially in the concealed spaces of existing public building steel structures, where there is a lack of directly usable installation reference conditions between different components. Coupled with significant elevation differences and inconsistent component elevations within the steel structure space, the lack of a height-adjustable and stable operating platform makes it difficult for workers to perform precise and stable construction operations on the upper steel structural members, further limiting the feasibility and installation accuracy of the track system.

[0004] The inspection robot's track system requires extremely high installation precision. Even minute deviations in the horizontal and vertical directions can directly affect the robot's operational smoothness and safety, thereby increasing the risk of robot jamming and abnormal stoppages. In concealed spaces at high altitudes, once a track deviation occurs, timely manual intervention and repair are often difficult, significantly increasing maintenance costs and risks.

[0005] Therefore, within the concealed space of a steel structure, there is an urgent need for a construction method that can provide a stable installation benchmark under complex spatial conditions without damaging the original steel structure, support continuous operation along the track path, and meet the high-precision installation requirements of the inspection robot track system, so as to achieve a balance between construction safety, installation accuracy, and project feasibility. Summary of the Invention

[0006] The purpose of this invention is to address the problems of dense structural members in concealed spaces of steel structures, limited working space, high-altitude track installation with a lack of continuous manual maintenance channels, ceiling slabs that cannot bear construction loads, difficulty in setting up traditional scaffolding systems, and difficulty in balancing continuous construction and high-precision installation along the track system. Without damaging the original steel structure, this invention provides a method for setting up a construction platform that can be continuously advanced along the inspection track path.

[0007] The specific technical solution is as follows:

[0008] A method for setting up a construction platform includes the following steps:

[0009] Step 1: Select load-bearing horizontal members as support points under the main steel structure and lay a movable working channel.

[0010] Step 2: Based on the construction path of the inspection robot track, the movable working channel is continuously laid below the track construction path along the construction direction to form a continuous passageway that can be moved as the construction progresses.

[0011] Step 3: Install an adjustable suspended hanging structure above the main steel structure, and fix the suspended hanging structure to the steel structure members through anchoring components.

[0012] Step four: Based on the track construction and installation height, erect a suspended operating platform on the suspended hanging structure, and fix the position of the operating platform with anchors.

[0013] Step 5: After completing the track installation work at the current construction point, move the movable work channel and the suspended operating platform forward along the track construction direction to the next construction point, and repeat the above steps until the entire track construction path is completed.

[0014] Furthermore, the movable work passage mentioned in step one is composed of several detachable passage units. The dimensions of the detachable passage units are configured according to the previous drawing review and the actual site survey results to adapt to the situation where the spacing between adjacent load-bearing members in the steel structure space is inconsistent, so as to ensure the continuity of the passage path and the safety of the operation.

[0015] Furthermore, in step two, the movable work channel is laid segment by segment below the construction path of the inspection robot track and is moved synchronously with the construction progress, so as to realize the continuous accessibility and reusability of the work channel during the construction process; the movable work channel does not need to be completely dismantled during the migration process, and is moved forward in a cyclical manner by disassembling and assembling section by section, reducing the amount of repeated assembly and disassembly work.

[0016] Furthermore, the anchoring assembly described in step three includes an anti-slip friction component and a high-strength bolted fastener;

[0017] The anti-slip friction component is installed at the contact interface between the suspended structure and the steel structure members to increase the interface friction resistance and prevent the suspended structure from slipping relative to each other under stress.

[0018] The high-strength bolted fasteners are used to reliably lock the suspended structure, ensuring that the suspended structure maintains a stable position under construction loads and track installation loads, thereby improving the overall anti-slip capability and operational stability.

[0019] Furthermore, the suspended hanging structure described in step three has a vertical height adjustment function, which can adjust the suspension height of the suspended operating platform according to the height difference of different construction points in the steel structure space, so as to adapt to the construction conditions with large changes in net height in the steel structure space, and enable the workers to stably reach the track system installation position at different elevations.

[0020] Furthermore, the suspended hanging structure and the movable working channel form a coordinated working system; the suspended hanging structure provides upper support for the suspended operating platform, and the movable working channel is used for the passage of construction personnel and the horizontal transfer of construction materials. The two work together to realize the continuous installation, adjustment and material transportation of the track system.

[0021] Furthermore, the suspended operating platform is fixedly connected to the suspended hanging structure through anchors. The anchors can fix the horizontal position and vertical height of the operating platform to prevent displacement of the operating platform under construction loads. The bearing surface size of the suspended operating platform is determined according to the requirements of the track installation operation, which can meet the space requirements for operators to stably operate the track system installation and calibration on it.

[0022] Furthermore, when the mobile work channel and the suspended operating platform are moved forward as a whole, there is no need to dismantle and rebuild the entire construction platform system. The construction can be carried out in a cyclical manner by dismantling and relocating parts of the platform.

[0023] After moving forward, repeat steps one through four to complete the channel laying, hanging structure fixing, and operating platform erection until all installation work on the entire track construction path is completed.

[0024] Furthermore, the method is implemented without performing destructive processing such as welding or drilling on the original steel structure. The suspended hanging structure is fixed to the steel structure members in a non-destructive manner through the anchoring components. It is applicable to the installation and renovation of inspection robot track systems in the concealed spaces of existing public building steel structures.

[0025] Furthermore, a site survey step is included before step one:

[0026] The distribution of rods, spacing of support points, changes in net height, and passage conditions along the construction path of the inspection robot track within the steel structure space were surveyed. Based on the survey results, the configuration dimensions of the movable operation passage unit, the setting position of the suspended hanging structure, and the suspension height parameters of the suspended operation platform were determined, providing a basis for the subsequent layout of the construction platform.

[0027] Compared with the prior art, the beneficial effects of this invention are:

[0028] This invention constructs a construction system that coordinates vertical and horizontal movement along a track path by deploying a movable working channel composed of detachable channel units below the main steel structure and setting up a height-adjustable suspended structure and a suspended operating platform above the main steel structure. This effectively solves core problems such as the inaccessibility of high-altitude operations in the concealed space of the steel structure, the difficulty in setting up traditional scaffolding, and the inability of the ceiling to bear construction loads. The vertical adjustment function of the suspended operating platform allows workers to stably reach the installation positions of each track in the steel structure space with significant height variations, significantly improving installation accuracy and operational safety. The construction method of disassembling and assembling the movable working channel section by section and moving it forward in a cyclical manner enables continuous construction along the inspection track path, effectively overcoming unfavorable conditions such as large spans of the steel structure space and inconsistent support point spacing, reducing the risk of repeated adjustments and rework. The entire process uses non-destructive anchoring to fix the suspended structure, without welding or drilling into the original steel structure. It is suitable for the renovation of concealed spaces in existing public building steel structures and has strong engineering adaptability and promotional value. Attached Figure Description

[0029] Figure 1 This is a flowchart of a construction platform layout method according to the present invention;

[0030] Figure 2 This is a schematic diagram illustrating the laying and travel direction of the mobile work channel of the present invention.

[0031] Figure 3 The suspended hanging structure of the present invention is set up in the left direction, and the suspended operating platform is erected and traveled in the right direction.

[0032] Figure 4This is a schematic diagram of how the anchoring component of the present invention is fixed above the main steel structure. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0034] Example 1

[0035] like Figure 1 The diagram shown is a flowchart of a construction platform deployment method provided in this embodiment, applicable to the deployment of a construction platform for the installation of an inspection robot track system within a steel structure space, including the following steps:

[0036] Step 1: Select load-bearing horizontal members as support points under the main steel structure and lay a movable working channel.

[0037] The movable work passage is composed of several detachable passage units. The dimensions of the detachable passage units are configured based on the previous drawing review and the actual site survey results to adapt to the situation where the spacing between adjacent load-bearing members in the steel structure space is inconsistent, so as to ensure the continuity of the passage path and the safety of the operation.

[0038] Before step one, there is also a field survey step: surveying the distribution of rods, spacing of support points, changes in net height and passage conditions along the construction path of the inspection robot track in the steel structure space. Based on the survey results, the configuration dimensions of the movable operation passage unit, the setting position of the suspended hanging structure and the suspension height parameters of the suspended operation platform are determined, providing a basis for the subsequent layout of the construction platform.

[0039] like Figures 2 to 4 As shown, this paper presents a method for setting up a construction platform suitable for installing a patrol robot track system within the concealed space of a steel structure roof of a large public building. The steel structure roof of this building has a clear height of approximately 6-9 meters. The lower chord of the main truss and secondary beams are arranged alternately, with the spacing between adjacent support points varying from 1.2 meters to 3.6 meters. The total length of the track installation path is approximately 120 meters, with a height difference of up to 1.5 meters along the way. The ceiling below is a light steel keel gypsum board system, which is not capable of bearing construction loads.

[0040] Before construction, workers used a lifting vehicle to conduct a comprehensive survey along the track construction path within the steel structure space. They recorded the location, spacing, and cross-sectional dimensions of load-bearing horizontal components such as the lower chord of the main truss and horizontal tie rods. They also measured the net height and elevation differences in each construction section and verified the ceiling structure and its load-bearing capacity. The survey revealed that the main load-bearing horizontal members available along the track path for this project include: H-beams (400mm cross-sectional height, spacing 3.0~3.6m), secondary beams (200mm cross-sectional height, spacing 1.2~1.5m), and horizontal tie rods (round steel pipes, spacing approximately 2.4m). Based on the survey data, the configuration specifications of the mobile work passage unit are determined as follows: the standard unit length is 1.2m (adapted to the secondary beam spacing) and 1.5m (adapted to the secondary beam spacing), and the width is uniformly 0.6m; the spacing of the suspended hanging structure is determined to be every 3m; the suspension height of the operating platform in each construction section is preset to three levels of 2.5m, 3.0m and 3.5m respectively according to the difference in net height, to provide a basis for the subsequent layout of the construction platform.

[0041] Based on the above survey data, this embodiment establishes an optimal configuration model for channel unit specifications to meet the coverage requirements of the entire route with the least amount of total units and the lightest total weight, avoiding material redundancy or insufficient coverage between spans due to unreasonable specification configuration.

[0042] The symbols are defined as follows: This represents the total number of support spans formed by adjacent load-bearing members along the entire route. For the first The measured net span of each support span ( (Unit: m) For the first The length of the channel unit ( This project , ); For the first The self-weight of a single unit (in this project) , ); For the first The optimal unit specification number for the span; For the first The total number of units configured; Total weight of the channel system (unit: kg); This is the upper limit of a single person's carrying capacity (15 kg for this project).

[0043] For the first For each support span, a greedy optimal strategy is used to select the shortest unit specification that can cover the span:

[0044]

[0045] No. The required number of units is: The total number of units in each specification is: Total weight and single-piece handling verification of the channel system: .

[0046] Taking this project as an example: within the 48m coverage section of the entire route, There are 1 supporting span, and the span distribution is as follows: The span accounts for 30 ( (each spans one standard unit) The span accounts for 10 ( (each spanning one extended unit), thus we get: , ,gross weight Each unit weighs no more than [amount not specified]. This meets the requirements for single-person handling. In actual configuration, a 20% reserve was added, resulting in a final configuration of 30 standard units and 12 extended units, which matches the actual usage in this project, verifying the model's guiding role in channel unit configuration.

[0047] Beneath the main steel structure, horizontal members with load-bearing capacity, namely the aforementioned secondary beams and horizontal tie rods, are selected as support points to lay a movable working passage. For example... Figure 2 As shown, the movable work platform is composed of several detachable platform units assembled sequentially. Each platform unit is placed on adjacent support members, with the platform surface making flat contact with the upper flange of the support member. The platform units are made of aluminum alloy scaffolding boards, each weighing approximately 8 kg, allowing for easy handling and assembly by a single person without the need for specialized tools. Platform units are quickly connected via pin-type connectors, with an overlap length of at least 100 mm between adjacent units to prevent misalignment under load. This project includes 30 standard units (1.2m × 0.6m) and 12 extended units (1.5m × 0.6m), with a total platform length of approximately 48m, covering the current construction section. After installation, workers can travel stably on the platform. Lifeline anchor points are installed on one side of the platform, and workers must wear safety belts and attach safety ropes to the lifeline at all times to ensure safe passage at heights.

[0048] Step 2: Based on the construction path of the inspection robot track, the movable working channel is continuously laid below the track construction path along the construction direction to form a continuous passageway that can be moved as the construction progresses.

[0049] The mobile work channel is laid segment by segment below the construction path of the inspection robot track and moves synchronously with the construction progress, so as to achieve continuous accessibility and reusability of the work channel during the construction process. The mobile work channel does not need to be completely dismantled during the migration process. It can be moved forward in a cyclical manner by disassembling and assembling each segment, reducing the amount of repeated assembly and disassembly work.

[0050] Based on the construction path of the inspection robot's track, a movable working channel is continuously laid below the track along the construction direction. Since the track path in this project is not straight and has local turning sections (minimum turning angle approximately 30°), the channel units are spliced ​​in a fan-shaped pattern at the turning points. The splicing angle of adjacent units is adjusted (5° per increment) to adapt to the path turns and ensure channel continuity. Figure 2 As indicated by the arrows, the tunnel is laid forward along the track from the starting point. After the current construction section is completed, the tail tunnel units are dismantled section by section and transported to the next construction point, where they are reassembled, thus achieving the cyclical forward movement of the tunnel. Actual measurements in this project show that approximately 12 tunnel units are dismantled and assembled each time, with each forward movement taking about 25 minutes. This can be completed by two workers, demonstrating significantly higher efficiency than the traditional method of overall assembly and dismantling.

[0051] Step 3: Install an adjustable suspended hanging structure above the main steel structure, and fix the suspended hanging structure to the steel structure members through anchoring components.

[0052] The anchoring assembly includes anti-slip friction components and high-strength bolted fasteners.

[0053] The anti-slip friction component is installed at the contact interface between the suspended structure and the steel structure members to increase the interface friction resistance and prevent the suspended structure from slipping relative to each other under stress.

[0054] The high-strength bolted fasteners are used to reliably lock the suspended structure, ensuring that the suspended structure maintains a stable position under construction loads and track installation loads, thereby improving the overall anti-slip capability and operational stability.

[0055] The suspended hanging structure has a vertical height adjustment function, which can adjust the suspension height of the suspended operating platform according to the height difference of different construction points in the steel structure space, so as to adapt to the construction conditions with large changes in the net height in the steel structure space, and enable the workers to stably reach the track system installation position at different elevations.

[0056] like Figure 3 , Figure 4 As shown, an adjustable suspended hanging structure is installed above the main steel structure (i.e., at the upper flange of the secondary beam and the main beam), and is firmly fixed to the steel structure members by anchoring components to provide upper support conditions for the subsequent operating platform.

[0057] The suspended structure consists of a crossbeam, a hanger, and a height adjustment mechanism. The crossbeam straddles the upper flange of the steel structural member (H-beam secondary beam), and both ends of the crossbeam have clamping slots to wrap around the edges of the steel beam flange. The hanger suspends vertically from the middle of the crossbeam, and its length can be continuously adjusted within the range of 0-2m via a threaded mechanism. The height adjustment mechanism is located at the lower end of the hanger and is used for fine-tuning the suspension height of the operating platform. Figure 3 As shown, the anchoring assembly consists of anti-slip friction components and high-strength bolted fasteners: the anti-slip friction components are 5mm thick rubber pads placed between the crossbar clamping surface and the steel beam flange, significantly increasing the friction coefficient at the contact interface (from approximately 0.15 for bare steel contact to approximately 0.45), effectively preventing slippage of the suspended structure under longitudinal construction loads; the high-strength bolted fasteners are M16 high-strength bolts (strength grade 10.9), passing through the crossbar clamping groove and the pre-drilled holes in the steel beam web (or using U-shaped saddle bolt clamps), reliably locking the crossbar to the steel beam. The design bearing capacity of each suspended structure is not less than 5kN, meeting the load requirements of the operating platform and workers (design load is 3kN, safety factor 1.5).

[0058] A total of 40 suspension structures were installed along the track path, with a spacing of about 3m. After being fixed, each structure was tested by pulling it out one by one, and all of them met the load-bearing requirements.

[0059] For the aforementioned clamp-type anchoring assembly, this embodiment establishes a composite anti-slip mechanical model of anti-slip friction components and high-strength bolted fasteners, quantitatively verifies the contribution of rubber pads to reducing bolt preload requirements, and provides a calculation method for minimum bolt preload.

[0060] The symbols are defined as follows: The vertical design load for a single-lane suspended structure (the sum of the self-weight of the operating platform and the load of the workers, for this project) ); The horizontal load factor (considering the dynamic impact of construction operations, this project takes...) ); For horizontal loads along the track direction ( ); For the contact interface friction coefficient (rubber gasket), this project bare steel contact ); The number of bolts for each anchoring component (for this project) ); The clamping force applied to the contact interface of a single bolt (unit: kN); For the anti-slip safety factor (take ); Friction contribution ratio (the ratio of the friction force of the rubber pad to the total force required for anti-slip).

[0061] Anti-slip condition of anchoring components: The frictional force generated by the rubber gasket under the combined action of vertical load and bolt clamping force must meet the following requirements:

[0062]

[0063] Therefore, the minimum clamping force required for a single bolt can be deduced:

[0064]

[0065] Friction contribution ratio η quantifies the independent contribution of the rubber pad to antislip:

[0066]

[0067] when At that time, friction alone satisfies the anti-slip condition, and bolt clamping force only provides redundancy protection; when When doing so, the minimum bolt clamping force must be applied according to the above formula.

[0068] Taking this project as an example: With rubber padding ( ): Bolt clamping force is required. If bare steel contact is used ( ): Bolt clamping force is required. The effect was nine times that of the rubber gasket solution. The results showed that a 5mm rubber gasket reduced the bolt clamping force required for anti-slip from 4.5 kN to 0.5 kN, which is only 0.5% of the rated preload (≥100 kN) of an M16 high-strength bolt. The bolt was under extremely low load, fully verifying the crucial role of the rubber gasket in the anchoring system and providing a quantitative basis for engineering selection of different interface types.

[0069] Step four: Based on the track construction and installation height, erect a suspended operating platform on the suspended hanging structure, and fix the position of the operating platform with anchors.

[0070] The suspended hanging structure and the mobile working channel form a coordinated working system. The suspended hanging structure provides upper support for the suspended operating platform, while the mobile working channel is used for the passage of construction personnel and the horizontal transfer of construction materials. The two work together to achieve continuous installation, adjustment and material transportation of the track system.

[0071] Based on the current track installation height at the construction site, a suspended operating platform will be erected at the lower end of the suspension rods of the suspended structure. For example... Figure 3As shown on the right, the suspended operating platform has a rectangular frame structure with platform dimensions of 1.2m × 0.8m. It is constructed from lightweight, high-strength aluminum alloy profiles and is equipped with guardrails at least 1.0m high around its perimeter, as well as a central crossbar. The platform's bottom surface is covered with anti-slip patterned steel plates, covering an area of ​​at least 90% of the platform frame's net area. The platform is connected to the crossbeam at the lower end of the suspension rod via hooks at the four corners, and the platform frame is secured to the crossbeam with M12 anchor bolts to prevent horizontal displacement or tilting under construction loads. The platform's suspension height is adjusted via a threaded adjustment mechanism on the suspension rod, with an adjustment range of 0~2m and an adjustment accuracy of ±5mm, meeting the working height requirements of different construction points. The operating platform for this project is designed to bear a load of 1.5kN (equivalent to the total weight of two workers and approximately 50kg of tools and materials), and has undergone load testing verification before use. Once the suspended operating platform is fixed in place, a coordinated working system is formed between the upper suspended structure and the lower channel: workers can stand on the operating platform and perform precise operations on the steel structure components and track installation points located above in a stable posture; materials are horizontally transferred through the lower movable channel and lifted by workers to the platform for use. The two work together to achieve continuous installation, adjustment and material supply of the track system.

[0072] To address the structural safety of the suspended operating platform, this embodiment establishes a platform frame mid-span deflection verification model and an eccentric load overturning resistance verification model, providing quantitative basis for platform load-bearing capacity design and operator positioning specifications.

[0073] The symbols are defined as follows: The longitudinal side length of the platform (in this project) ); The horizontal side length of the platform (in this project) ); The elastic modulus of the platform frame profile (aluminum alloy 6061) ); Moment of inertia of a single longitudinal frame beam section ( Based on 60mm×40mm×3mm aluminum alloy rectangular hollow profile). Design the total load for the platform ( (Including 2 workers and tools and materials) For the worker's eccentricity (most unfavorable working condition: a single person standing on the edge of the platform), ); For the safety factor (take) ); To allow deflection ( ); Design tensile bearing capacity of M12 anchor bolts ( (Calculated based on bolt cross-sectional strength).

[0074] (I) Verification of mid-span deflection of the platform frame. The two longitudinal frame beams of the platform are simplified as simply supported beams with hinged ends. The most unfavorable working condition is that the design load is concentrated at the mid-span:

[0075]

[0076] Substitute the data from this project: Satisfying the allowable deflection Requirements ( The platform's rigidity meets the requirements for precise operation.

[0077] (II) Verification of overturning resistance under eccentric load. When a single worker (P_person = 750 N) stands on one edge of the platform, an overturning moment is generated about the longitudinal central axis of the platform. The anti-overturning moment is provided by the suspension bolts on the opposite side:

[0078]

[0079] Therefore, the required tensile strength of the bolts to resist overturning can be deduced:

[0080]

[0081] Substitute the data from this project: Much smaller than the tensile bearing capacity of an M12 bolt. The overturning safety factor is as high as The results verified that the four corner anchor bolts have sufficient anti-overturning capacity under eccentric loads. Both verifications above together demonstrate that the operating platform of this project meets the design requirements in terms of both structural stiffness and stability, providing a theoretical basis for the load test verification of the 1.5kN design bearing capacity.

[0082] Step 5: After completing the track installation work at the current construction point, move the movable work channel and the suspended operating platform forward along the track construction direction to the next construction point, and repeat the above steps until the entire track construction path is completed.

[0083] The suspended operating platform is fixedly connected to the suspended hanging structure through anchors. The anchors can fix the horizontal position and vertical height of the operating platform to prevent displacement of the operating platform under construction loads. The bearing surface size of the suspended operating platform is determined according to the requirements of the track installation operation and can meet the space requirements for operators to stably operate the track system installation and calibration on it.

[0084] When the mobile work channel and the suspended operating platform are moved forward as a whole, there is no need to dismantle and rebuild the entire construction platform system. The construction can be carried out in a cyclical manner by dismantling and relocating parts of the platform.

[0085] After moving forward, repeat steps one through four to complete the channel laying, hanging structure fixing, and operating platform erection until all installation work on the entire track construction path is completed.

[0086] The method is implemented without performing destructive processing such as welding or drilling on the original steel structure. The suspended hanging structure is fixed to the steel structure members in a non-destructive manner through the anchoring components. It is applicable to the installation and renovation of inspection robot track systems in the concealed spaces of existing public building steel structures.

[0087] After completing the installation and calibration of the track system at the current construction site, the movable work passage and the suspended operating platform will be moved forward along the track construction direction to the next construction site. This does not require the complete dismantling and reconstruction of the construction platform system; instead, it is achieved through partial disassembly and relocation. The specific steps are as follows: ① First, loosen the fixing bolts of the operating platform and move the platform forward along the hoist to the corresponding suspension structure at the next construction site, then reattach and fix it; ② For the suspension structure, disassemble the entire suspension structure (crossbar and hoist assembly) at the very end of the completed section, transport it to the next unfinished section, and refix it according to step three; ③ Disassemble several sections of the passage unit at the end of the passage section by section, move them forward for connection and assembly, and supplement the coverage area of ​​the passage ahead. After each construction site is moved forward, repeat steps one through four to complete the track system installation until the entire track path is completed. This project involved the installation of a 120m track system, with 40 relocations of the construction platform and approximately 480 disassembly and assembly / disassembly of channel units (unit level). The total relocation time was approximately 16 hours. No work was interrupted due to platform movement, fully demonstrating the continuity and efficiency of this method. No welding or drilling was performed on the main steel structure during the entire construction process, and the original building structure remained intact.

[0088] This embodiment establishes an optimal forward movement batch model to determine the number of construction points in each forward movement that minimizes the total forward movement time.

[0089] The symbols are defined as follows: The total number of construction sites along the entire line (for this project) ); The number of construction points covered in each forward movement (forward movement batch); For each forward movement, there is a fixed time cost (safety briefing, tool organization, etc.), in this project ); The variable time added for each construction point moved forward (deck unit disassembly and assembly, for this project) ); Total length of deployed channels (for this project) ); The minimum channel coverage length that must be maintained after the move (including safety buffer, for this project) ); Spacing between adjacent construction points (in this project) ); This represents the maximum forward batch size under the channel length constraint. Total forward shift time (unit: min).

[0090] When moving forward to cover k construction points each time, the time required for a single forward movement is:

[0091]

[0092] The total time for the entire line to be moved forward is:

[0093]

[0094] right Differentiate: ,show about The process is monotonically decreasing, meaning that the larger the batch size moved forward, the shorter the total forward time. Therefore, the optimal batch size should be the maximum feasible value under the channel length constraint.

[0095] Channel length constraints determine the maximum forward batch size:

[0096]

[0097] Taking this project as an example: This means that each forward movement can cover a maximum of 14 construction sites. (Using...) Compared with actual adoption Comparison of total forward movement time (each point moved forward once):

[0098]

[0099]

[0100] Save time by moving it forward: This reduces the total man-hours by approximately 14.5% compared to the original plan. The generalized time-saving formula is:

[0101]

[0102] This project is estimated using this formula: The result is close to the precise calculation of 145 min (the deviation is due to the rounding effect). The above model shows that, given sufficient total channel length, the single forward move batch should be increased as much as possible, reducing the number of moves from 40 to 3, which can reduce the fixed time overhead of 37 forward moves. This provides a quantitative basis for optimizing the construction organization of similar projects in the future.

[0103] In this embodiment, a total of 480 track installation nodes were completed. The maximum deviation of track horizontality was 1.8 mm / m (design allowable value 3 mm / m), the maximum deviation of verticality was 1.5 mm / m (design allowable value 3 mm / m), and the maximum difference in track joint height was 0.3 mm (design allowable value 0.5 mm). All installation accuracy indicators met the design requirements of the inspection robot track system, and no personnel casualties or equipment safety accidents occurred during the construction period.

[0104] Example 2

[0105] This embodiment focuses on the modification and installation of a patrol robot track system within the concealed space of an existing sports stadium canopy's steel structure. Compared to Embodiment 1, the space in this embodiment has the following unique characteristics: the steel structure canopy adopts a tubular truss system, with chord members made of round steel pipes (diameter 219mm~325mm) and web members arranged diagonally in a crisscross pattern. The spacing of the available horizontal load-bearing members (lower chord horizontal members) varies from 2.0 to 5.0m, with some sections reaching 5.0m, exceeding the coverage range of the standard passage unit; the canopy's lowest point has a net height of approximately 4.5m, while the highest point is approximately 11m, resulting in a significant height difference. Furthermore, the elevation of the lower chord of the tubular truss changes parabolically along the span, requiring frequent adjustments to the suspension height of the hanging structure; the round steel pipe components inside the canopy lack flat flange surfaces, making traditional clamp-type anchoring methods difficult to apply directly, necessitating the use of special clamp anchoring.

[0106] In response to the above differences, this embodiment makes the following adaptive adjustments to the construction platform layout method:

[0107] (1) Adaptive adjustment of channel unit configuration: In the case of a maximum horizontal bar spacing of 5.0m, in addition to the standard channel unit (1.2m×0.6m), an extra span-strengthened channel unit (2.5m×0.6m) is configured. This type of unit adopts a rectangular steel pipe frame welded together and can independently span any two support points within a range of 5.0m. During the laying, a temporary support rod (clamped on the lower web bar) is added at the mid-span position of the 2.5m unit to reduce the effective support span to within 2.5m, ensuring that the channel deflection does not exceed 1 / 200 of the channel unit span and meets the operation safety requirements.

[0108] (2) Special clamp anchorage for round steel pipe members: To address the lack of a flat flange surface in the round steel pipe members of the truss, the anchorage assembly was changed to a special arc-shaped clamp. The clamp consists of two semi-circular plates joined together by bolts. The inner arc surface is equipped with a rubber anti-slip pad (8mm thick), and lifting lugs are welded to the outer side for connecting the lifting rod. During installation, the clamp sits on the lower chord of the round steel pipe, and the two semi-circular plates are locked together with M16 high-strength bolts (4 bolts / column), ensuring a tight fit between the rubber pad and the outer wall of the steel pipe. The designed clamping force is not less than 20kN, and the designed vertical bearing capacity of a single clamp is not less than 8kN, meeting the requirements of the operating platform and work load. In this embodiment, a total of 32 clamp-type suspension structures are set along the track path, spaced approximately 3.5m apart, covering a total track path length of 112m.

[0109] (3) Continuous adjustment of suspension height under large height difference conditions: For construction conditions with a clear height of 4.5~11m and a large height difference, this embodiment adopts a segmented combination suspension rod design: the basic suspension rod is 1.0m long, and extension sections (0.5m each) can be added as needed, with a maximum combined length of 6.0m. With the threaded fine adjustment mechanism at the lower end of the suspension rod (adjustment range ±100mm), the suspension height can be continuously adjusted within the range of 0.5~6.1m. When the clear height of the construction section changes significantly (such as from one truss span to the next span, with a clear height difference of more than 2m), the operators can adjust the height of the operating platform by adding or removing extension sections of the suspension rod. A single adjustment takes about 10 minutes, without the need to replace the entire suspension structure, which efficiently adapts to different height construction conditions.

[0110] The remaining construction steps in this embodiment (continuous channel layout, operation platform erection, and cyclical forward movement construction) are basically the same as in Embodiment 1 and will not be repeated. This embodiment completed 384 track installation nodes, with a maximum track horizontal deviation of 2.1 mm / m, a maximum vertical deviation of 1.9 mm / m, and a maximum track joint height difference of 0.4 mm, all meeting design requirements. No welding, cutting, or permanent alteration was performed on the canopy steel structure throughout the construction process; the original structural integrity was completely preserved, fully verifying the applicability and safety of this invention in existing building renovation projects.

[0111] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for deploying a construction platform, applicable to the deployment of a construction platform for installing a patrol robot track system within a steel structure space, characterized in that, The method includes the following steps: Step 1: Select load-bearing horizontal members as support points under the main steel structure and lay a movable working channel. Step 2: Based on the construction path of the inspection robot track, continuously lay the movable working channel along the construction direction below the track construction path to form a continuous passageway that can be moved as the construction progresses. Step 3: Install an adjustable suspended hanging structure above the main steel structure, and fix the suspended hanging structure to the steel structure members through anchoring components; Step 4: Based on the track construction and installation height, erect a suspended operating platform on the suspended hanging structure and fix the position of the operating platform with anchors. Step 5: After completing the track installation work at the current construction point, move the movable work channel and the suspended operating platform forward along the track construction direction to the next construction point, and repeat the above steps until the entire track construction path is completed.

2. The construction platform layout method according to claim 1, characterized in that, The movable work passage described in step one consists of several detachable passage units. The dimensions of these detachable passage units are configured based on the preliminary drawing review and actual site survey results to accommodate inconsistent spacing between adjacent load-bearing members within the steel structure space, ensuring the continuity of the passageway and operational safety. For each support span, a greedy optimal strategy is used to select the shortest unit specification that can cover the span: ;No. The required number of units is: The total number of units in each specification is: Total weight and single-piece handling verification of the channel system: ;in, For the first The measured net span of each supporting span; For the first The length of the channel unit; For the first The weight of a single unit; For the first The optimal unit specification number for the span; For the first The total number of units configured; This refers to the total weight of the channel system; This represents the maximum carrying capacity for a single person.

3. The construction platform layout method according to claim 2, characterized in that, In step two, the movable work channel is laid segment by segment below the construction path of the inspection robot track and is moved synchronously with the construction progress to achieve continuous accessibility and reusability of the work channel during the construction process. The movable work channel does not need to be completely dismantled during the migration process. It is moved forward in a cyclical manner by disassembling and assembling each segment, reducing the amount of repeated assembly and disassembly work.

4. The construction platform layout method according to claim 1, characterized in that, The anchoring assembly described in step three includes anti-slip friction components and high-strength bolted fasteners; The anti-slip friction component is installed at the contact interface between the suspended structure and the steel structure members to increase the interface friction resistance and prevent the suspended structure from slipping relative to each other under stress. The high-strength bolted fasteners are used to reliably lock the suspended structure, ensuring that the suspended structure maintains a stable position under construction loads and track installation loads, thereby improving the overall anti-slip capability and operational stability. The friction force generated by the anti-slip friction component under the combined action of vertical load and bolt clamping force must meet the following requirements: Therefore, the minimum clamping force required for a single bolt can be deduced: Friction contribution ratio η quantifies the degree of independent contribution of the rubber pad to antislip: ;when At that time, friction alone satisfies the anti-slip condition, and bolt clamping force only provides redundancy protection; when At that time, the minimum bolt clamping force must be applied according to the above formula; where, The vertical design load for a single-lane suspended structure; This is the horizontal load factor; This refers to a horizontal load along the track direction. The coefficient of friction at the contact interface; The number of bolts for each anchoring component; The clamping force applied to the contact interface of a single bolt; To ensure a slip resistance safety factor, ; The contribution ratio to friction.

5. The method for arranging a construction platform according to claim 4, characterized in that, The suspended hanging structure described in step three has a vertical height adjustment function, which can adjust the suspension height of the suspended operating platform according to the height difference of different construction points in the steel structure space, so as to adapt to the construction conditions with large changes in net height in the steel structure space, and enable the workers to stably reach the track system installation position at different elevations.

6. The method for arranging a construction platform according to claim 5, characterized in that, The suspended hanging structure and the mobile working channel form a coordinated working system. The suspended hanging structure provides upper support for the suspended operating platform, while the mobile working channel is used for the passage of construction personnel and the horizontal transfer of construction materials. The two work together to achieve continuous installation, adjustment and material transportation of the track system.

7. A method for arranging a construction platform according to claim 6, characterized in that, The suspended operating platform is fixedly connected to the suspended hanging structure through anchors. The anchors can fix the horizontal position and vertical height of the operating platform to prevent displacement of the operating platform under construction loads. The bearing surface size of the suspended operating platform is determined according to the requirements of the track installation operation and can meet the space requirements for operators to stably operate the track system installation and calibration on it.

8. A method for arranging a construction platform according to claim 7, characterized in that, When the mobile work channel and the suspended operating platform are moved forward as a whole, there is no need to dismantle and rebuild the entire construction platform system. The construction can be carried out in a cyclical manner by dismantling and relocating parts of the platform. After moving forward, repeat steps one through four to complete the channel laying, hanging structure fixing, and operating platform erection until all installation work on the entire track construction path is completed.

9. A method for arranging a construction platform according to any one of claims 1 to 8, characterized in that, The method is implemented without damaging the original steel structure. The suspended structure is fixed to the steel structure members in a non-destructive manner through the anchoring components. It is applicable to the installation and renovation of inspection robot track systems in the concealed spaces of existing public building steel structures.

10. A method for arranging a construction platform according to claim 1, characterized in that, The process of conducting a site survey precedes step one: The distribution of rods, spacing of support points, changes in net height, and passage conditions along the construction path of the inspection robot track within the steel structure space were surveyed. Based on the survey results, the configuration dimensions of the movable operation passage unit, the setting position of the suspended hanging structure, and the suspension height parameters of the suspended operation platform were determined, providing a basis for the subsequent layout of the construction platform.

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