Scaffold staged building method

Abstract

The invention discloses a staged building method for a scaffold. The staged building method comprises the following steps that S1, real-time wind direction and wind speed information of a construction site is obtained; s2, determining a windward side and a leeward side of the scaffold according to preset judgment logic on the basis of the real-time wind direction and wind speed information; s3, in the scaffold building process, vertical supporting pieces and horizontal connecting pieces are preferentially erected on the windward side to form an initial stable wind-resistant frame; s4, after the windward side frame is formed, corresponding vertical supporting pieces and horizontal connecting pieces are erected in a manner of gradually extending towards the leeward side according to a preset sequence; and S5, carrying out overall stability detection on each layer after completion of building of the layer, and comparing the measured horizontal displacement, inclination angle and key node strain with preset threshold values. By adopting a staged construction process mode based on the wind load environment, the purpose of ensuring construction continuity and safety under different wind load conditions is achieved, so that the technical effect of dynamic balance between construction efficiency and structural stability in the scaffold construction process is achieved.

Description

Technical Field

[0001] This invention relates to the field of scaffolding, and more particularly to a method for phased scaffolding construction. Background Technology

[0002] Existing methods for erecting high-altitude scaffolding typically follow a predetermined sequence, layer by layer, relying heavily on the experience of construction workers to determine whether reinforcement or work suspension is necessary. While this method can meet basic stability requirements in normal windless or low-wind conditions, actual construction work at heights often involves variable wind speeds and directions. When wind loads exceed a certain range, the unfinished scaffolding frame is prone to overall tilting, excessive displacement of local nodes, and even structural collapse, posing significant safety hazards.

[0003] To mitigate risks, some construction plans have incorporated reinforcement measures such as stiffening cables and temporary diagonal bracing. However, these measures are mostly reactive, meaning they are only implemented after significant structural swaying or exceeding acceptable limits, lacking proactive assessment and dynamic response to wind load changes. Furthermore, existing methods often fail to differentiate the different stress characteristics of the windward and leeward sides, resulting in insufficient wind resistance stability in the early stages of construction. This necessitates frequent rework or additional support during construction, reducing efficiency and increasing costs.

[0004] Therefore, there is an urgent need for a new scaffolding erection method that can combine real-time wind speed and direction data to dynamically determine the erection sequence of the windward and leeward sides, and simultaneously conduct stability testing and reinforcement during the phased erection process, thereby achieving safe and efficient construction of scaffolding in complex wind load environments. Summary of the Invention

[0005] The present invention provides a method for phased scaffolding construction, which is used to solve related technical problems in the background art.

[0006] The technical solution provided by this invention is as follows: A method for phased scaffolding erection, comprising the following steps: S1. Obtain real-time wind direction and speed information at the construction site; S2. Based on the real-time wind direction and wind speed information, determine the windward and leeward sides of the scaffolding according to the preset judgment logic; S3. During the scaffolding erection process, vertical supports and horizontal connectors are erected on the windward side to form an initial stable wind-resistant frame; S4. After the windward frame is formed, the corresponding vertical support components and horizontal connectors are gradually extended to the leeward side in a predetermined order. S5. After each layer is completed, the overall stability of the layer is tested, and the measured horizontal displacement, tilt angle and strain of key nodes are compared with the preset threshold. When the test result does not meet the preset threshold, reinforcement measures are implemented on the windward side and adjacent areas of the layer according to the priority rule, and the test is repeated until the threshold is met before proceeding to the next layer. When the real-time wind direction or wind speed changes abruptly beyond the preset range, the current construction steps are adjusted according to the preset response strategy and local stabilization is implemented until the conditions are met and construction is resumed.

[0007] One implementation method for acquiring real-time wind direction and wind speed information includes at least one of the following: direct measurement by an on-site wind speed / direction instrument, near-field weather station data, or short-term forecast data obtained from a network weather service interface (API), and updating the data at a sampling period of no more than T1 seconds.

[0008] In one implementation, the determination logic includes: calculating the angle α between the wind direction and the edge of the scaffold plane; when the wind speed is ≥V and α≤α0, the corresponding edge or area is determined as the windward side; wherein α0 and V are preset thresholds.

[0009] In one embodiment, the preset threshold range is: α0 is 5-45°; V is 3-15 m / s.

[0010] In one embodiment, the stability detection includes: measuring the inter-layer horizontal displacement Δ, the layer dip angle θ, and the nodal strain ε, and comparing them with a preset threshold Δ. _max θ _max ε _max Compare.

[0011] In one embodiment, the reinforcement measures include: adding or tightening horizontal tie rods on the windward side, installing diagonal braces or cross shear braces, installing and tensioning temporary cables, or locally adding bottom supports or adjusting the height of the lower supports; after implementation, repeated testing is performed until the threshold is met.

[0012] In one implementation, the proportion of nodes that are not ultimately reinforced is limited to P%-Q% in the same layer or adjacent areas, where P and Q are preset percentages.

[0013] In one implementation, when the real-time wind speed or wind direction changes beyond a preset value within a time window Δt (wind speed change ≥ ΔV or wind direction shift ≥ Δα), one of the following response strategies is triggered: suspend the upper-level construction and reinforce the windward side, temporarily add support, or revert the components in that area to the previous stable layer and reinforce them until the inspection is passed and construction is resumed.

[0014] In one implementation, real-time wind direction and speed information is fused with short-term weather forecast data. Based on the forecast results, reinforcement or work stoppage windows are pre-arranged in the construction plan to reduce the impact of sudden wind loads on construction.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) The phased erection method of the scaffolding of the present invention adopts a phased erection process based on wind load environment. By completing the scaffolding foundation erection in low wind speed environment, taking local reinforcement and correction measures in medium wind speed environment, and suspending high-altitude operations or switching to the final fixing process in high wind speed environment, the purpose of ensuring the continuity and safety of erection under different wind load conditions is achieved. Thus, the technical effect of dynamic balance between construction efficiency and structural stability in the scaffolding erection process is realized, thereby solving the technical problems of insufficient overall safety of scaffolding and easy impact on erection progress in the existing technology under complex and changeable wind load environment. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the phased construction method of the present invention. Detailed Implementation

[0017] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0018] like Figure 1 As shown, this invention is a phased scaffolding erection method that incorporates dynamic wind load environmental factors into the scaffolding erection process. Safety control is achieved through zoning, layering, and phased approaches, thereby improving the stability and reliability of scaffolding construction. The specific steps are as follows: S1. Before the scaffolding erection begins, obtain real-time wind direction and speed information at the construction site.

[0019] In one implementation, an anemometer / wind direction meter can be installed on the top of the site or at a predetermined location on the scaffolding to measure wind speed and direction in real time. Alternatively, it can access real-time data from a near-field weather station or obtain short-term forecast data through a network weather service interface (API). To ensure timely monitoring, the data sampling period is preferably no more than 10 seconds.

[0020] For example, an anemometer deployed at the construction site measured an instantaneous wind speed of 7 m / s, with a wind direction of 30° west of southwest. This multi-source acquisition and rapid update mechanism can effectively avoid inaccurate judgments caused by errors or delays from a single measuring point, thereby improving the reliability of on-site wind load information. S2. Based on the collected wind speed and direction data, determine the windward and leeward sides of the scaffolding according to the preset judgment logic.

[0021] In one implementation, the system uses the angle α between the wind direction and the edge of the scaffold plane as a judgment parameter. When the wind speed is ≥5m / s and α≤30°, that side is determined to be the windward side.

[0022] For example, if the angle between the long side of the scaffolding at the construction site and the wind direction is 25°, then the long side is determined to be the windward side; ensure that the starting area of ​​the scaffolding is always in the position that can best resist wind load, thereby reducing the risk of temporary unstable structures being directly exposed to wind pressure.

[0023] After determining the windward side, the construction process proceeds to step S3; in step 3, the construction workers prioritize erecting vertical support components and horizontal connecting components on the windward side to quickly form a wind-resistant frame.

[0024] Specifically, first, 3-4 supporting uprights are vertically installed along the windward side and reinforced with horizontal tie rods to form a relatively stable rectangular frame structure on the windward side. Only after this frame is formed and passes inspection can step S4 be taken, where construction workers gradually extend the remaining uprights and horizontal members to the leeward side. Through this "windward-first" construction method, even if the scaffolding is still incomplete, it can have a preliminary ability to resist wind loads. Compared with the traditional uniform advancement construction method, the method of this invention can significantly improve the safety in the early stages of construction.

[0025] Once the first layer of scaffolding is erected, proceed to step S5 to conduct an overall stability test on that layer.

[0026] The testing includes: measuring the inter-story horizontal displacement Δ using a laser rangefinder; measuring the story inclination θ using a total station or level; monitoring nodal strain ε using distributed fiber optic sensors; and comparing the test results with a preset threshold Δ. _max θ _max ε _max Comparison, such as: Δ _max It is 15mm, θ _max 0.5°, ε _max The threshold is 200με; if all detected parameters are less than or equal to the threshold, the next layer of construction is allowed; if any parameter exceeds the threshold, reinforcement measures are immediately initiated.

[0027] If the inspection fails, the construction personnel will implement reinforcement according to the preset priority, including: first, checking and tightening the horizontal tie rod on the windward side; if it still does not meet the standard, then installing diagonal bracing or cross shear bracing in the area; further, installing temporary steel wire cables at key nodes and tensioning them; if the problem is still not solved, then increasing or adjusting the support height at the bottom; after each measure is implemented, the inspection must be repeated until all indicators meet the threshold requirements; this graded reinforcement process can ensure that the problem is solved from shallow to deep, avoiding the waste of resources caused by adopting complex measures from the beginning.

[0028] In another embodiment, the present invention also considers abrupt changes in wind direction and speed. When a wind speed increase of ≥3m / s or a wind direction shift of ≥20° is detected within a time window Δt (e.g., 2 minutes), a preset response strategy is triggered, including: suspending the upper layer construction and immediately reinforcing the windward side; if the abrupt change continues, temporary support is added or unstable components are moved back to the previous stable layer for reinforcement.

[0029] For example, when the wind speed suddenly increases from 7 m / s to 11 m / s, the construction command system will immediately issue an alarm, requiring workers to stop building upwards and reinforce the current windward side; this avoids the impact of sudden wind loads on the still unstable structure, thus ensuring the safety of personnel and the structure.

[0030] Furthermore, the method of this invention also incorporates short-term weather forecast data to optimize the construction plan. When the forecast indicates that the wind speed may exceed 10 m / s within the next 30 minutes, the construction system will mark a stoppage or reinforcement window in the plan in advance. During this period, the construction team will only carry out inspection and reinforcement work, while suspending the construction of new layers. Through this predictive fusion approach, the impact of emergency shutdowns on the overall progress can be reduced, making the construction process more controllable and efficient.

[0031] In different embodiments, the method of the present invention is applicable to full-span scaffolding, external scaffolding, mobile scaffolding, and modular scaffolding. Because this method focuses on phased management of the construction process rather than relying on specific components, it has strong universality. Practice has proven that by implementing this method, dynamic response to wind loads during construction, closed-loop detection of layered stability, and multi-level reinforcement measures can be achieved, thereby significantly improving the overall safety and reliability of the scaffolding.

[0032] Example 1 The deployed anemometer measured a real-time wind speed of 3.5 m / s, with a wind direction of southeast. According to the preset judgment logic, the wind speed did not exceed the threshold of 5 m / s, so the system classified the environment as a low-wind-speed scenario. Under these conditions, the windward side of the scaffolding was determined to be the southeast side. However, due to the low wind pressure, the construction of the windward frame could be simplified by quickly erecting the uprights on the windward side and adding a layer of horizontal tie rods.

[0033] After the first floor was completed, the horizontal displacement Δ was measured to be 5 mm, the tilt angle θ to be 0.2°, and the nodal strain ε to be 80 με using a total station. All of these values ​​were less than the threshold values ​​(Δ). _max =15mm, θ _max =0.5°, ε _max =200με), so no additional reinforcement is needed to proceed to the next layer of construction.

[0034] In this scenario, the phased construction method primarily provides a safety redundancy mechanism, ensuring scaffold stability even with less stringent inspections. Compared to traditional construction methods, this approach maintains safety standards with minimal construction costs.

[0035] Example 2 The anemometer measured a wind speed of 7 m / s, with a southwest direction. When the wind speed is ≥5 m / s and the angle α between the wind direction and the long side of the scaffold is 25°, the southwest side is determined to be the windward side. At this time, the construction workers should first erect vertical and horizontal poles on the southwest side to form a wind-resistant frame, and then gradually move towards the leeward side.

[0036] After the first layer was completed, the test results were: horizontal displacement Δ=12mm, tilt angle θ=0.4°, and nodal strain ε=210με, where the strain exceeded the preset threshold of 200με; therefore, the system initiated reinforcement measures, first by tightening the horizontal tie rod on the windward side, and after another test, the strain value dropped to 180με, meeting the threshold requirement; then the next layer was constructed.

[0037] Under these medium wind speed conditions, the detection and reinforcement closed loop can promptly identify potential hazards (such as excessive stress on nodes), and the possibility of overall collapse can be avoided through graded reinforcement, demonstrating the safety improvement effect of this method compared to traditional experience-based construction.

[0038] Example 3 Under strong wind conditions, the anemometer measured a wind speed of 12 m / s, with the wind direction being due west. The west side was determined to be the windward side, and the construction team was immediately instructed to strictly adhere to the phased construction process. This meant that the next layer of construction could only proceed after the complete framework on the windward side had been formed and passed inspection.

[0039] When the first layer was inspected, the horizontal displacement Δ = 18 mm was measured, which exceeded Δ _max =15mm threshold; tilt angle θ=0.6°, also exceeds θ _max =0.5°. The reinforcement process should be initiated immediately at this point: First, the horizontal tie rod on the windward side was reinforced, and the test result showed that Δ decreased to 16mm. Subsequently, cross shear bracing was installed, and the test results showed Δ=14mm and θ=0.4°, both within the threshold.

[0040] In the event of sustained high wind speeds, short-term forecast data was also incorporated into the construction process. If the forecast indicated that the wind speed would reach 15 m / s in 30 minutes, the system would automatically schedule a work stoppage window in the construction plan, requiring the suspension of upper-level construction and the reinforcement of the current structure in advance, and work would resume after the wind speed recovered.

[0041] In this embodiment, the method achieves dynamic safety control of high-risk scenarios through real-time monitoring, hierarchical reinforcement, and predictive fusion, ensuring that the scaffolding will not become unstable even in extreme environments.

[0042] In this embodiment, the phased scaffolding erection method adopts a phased erection process based on wind load environment. By completing the scaffolding foundation erection in low wind speed environment, taking local reinforcement and correction measures in medium wind speed environment, and suspending high-altitude operations or transitioning to the final fixing process in high wind speed environment, the method achieves the goal of ensuring the continuity and safety of erection under different wind load conditions. This achieves the technical effect of dynamically balancing construction efficiency and structural stability during scaffolding erection, and solves the technical problems of insufficient overall safety of scaffolding and easy impact on erection progress in the existing technology under complex and variable wind load environment.

[0043] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for phased scaffolding erection, characterized in that, Includes the following steps: S1. Obtain real-time wind direction and speed information at the construction site; S2. Based on the real-time wind direction and wind speed information, determine the windward and leeward sides of the scaffolding according to the preset judgment logic; S3. During the scaffolding erection process, vertical supports and horizontal connectors are erected on the windward side to form an initial stable wind-resistant frame; S4. After the windward frame is formed, the corresponding vertical support components and horizontal connectors are gradually extended to the leeward side in a predetermined order. S5. After each layer is built, perform an overall stability test on the layer and compare the measured horizontal displacement, tilt angle and strain of key nodes with preset thresholds. When the test result does not meet the preset threshold, reinforcement measures are implemented on the windward side and adjacent areas of the layer according to the priority rule, and the test is repeated until the threshold is met before proceeding to the next layer. When the real-time wind direction or wind speed changes abruptly beyond the preset range, the current construction steps are adjusted according to the preset response strategy and local stabilization is implemented until the conditions are met and construction is resumed.

2. The method for phased scaffolding erection as described in claim 1, characterized in that, Real-time wind direction and speed information can be obtained from at least one of the following: direct measurement by an on-site wind speed / direction instrument, data from a near-field weather station, or short-term forecast data obtained from a web weather service interface (API), and updated at a sampling period of no more than T1 seconds.

3. The method for phased scaffolding erection as described in claim 1, characterized in that, The determination logic includes: calculating the angle α between the wind direction and the edge of the scaffold plane; when the wind speed is ≥V and α≤α0, the corresponding edge or area is determined as the windward side; where α0 and V are preset thresholds.

4. The method for phased scaffolding erection as described in claim 3, characterized in that, The preset threshold range is: α0 is 5-45°; V is 3-15 m / s.

5. The method for phased scaffolding erection as described in claim 1, characterized in that, The stability detection includes: measuring the inter-layer horizontal displacement Δ, the layer dip angle θ, and the nodal strain ε, and comparing them with a preset threshold Δ. _max θ _max ε _max Compare.

6. The method for phased scaffolding erection as described in claim 1, characterized in that, The reinforcement measures include: adding or tightening horizontal tie rods on the windward side, installing diagonal bracing or cross shear bracing, installing and tensioning temporary cables, or locally adding bottom support or adjusting the height of the lower support; after implementation, repeated testing is carried out until the threshold is met.

7. The method for phased scaffolding erection as described in claim 1, characterized in that, Within the same floor or adjacent areas, the proportion of nodes that have not been ultimately reinforced is limited by P%-Q%, where P and Q are preset percentages.

8. The method for phased scaffolding construction as described in claim 1, characterized in that, When the real-time wind speed or wind direction changes beyond the preset value within the time window Δt (wind speed change ≥ ΔV or wind direction shift ≥ Δα), one of the following response strategies will be triggered: suspend the upper layer construction and reinforce the windward side, temporarily add support, or revert the components in that area to the previous stable layer and reinforce them until the inspection is passed and construction is resumed.

9. A method for phased scaffolding erection as described in claim 1, characterized in that, Real-time wind direction and speed information is integrated with short-term weather forecast data. Based on the forecast results, reinforcement or work stoppage windows are pre-arranged in the construction plan to reduce the impact of sudden wind loads on construction.

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