Wall-attached scaffold system based on eddy current resistance stability

Abstract

The invention relates to a wall-attached scaffold system based on eddy-current-resistant stability, and aims to improve the safety and the construction efficiency in the construction process of a high-rise building. According to the system, wind speed and air density are monitored in real time and vortex wind pressure is calculated by combining an anemograph and an air density measuring instrument on an outer wall scaffold erected on the leeside of a building, and the number and the arrangement mode of diagonal draw bars are designed according to the wind speed and the air density, so that vortex traction force is effectively resisted.

Description

Technical Field

[0001] The invention relates to the technical field of wall-attached scaffolding, in particular to a wall-attached scaffolding system based on anti-eddy current stability. Background Art

[0002] With the continuous development of modern construction technology, the construction of high-rise buildings has become increasingly dependent on wall-mounted scaffolding systems. These scaffolds not only provide the necessary working platform for construction workers, but also ensure safety during the construction process. However, in the construction of high-rise buildings, especially on the leeward side of the building, eddy currents often occur. This eddy current generated by the combined effect of wind speed and building structure will produce additional traction on the scaffolding system, increasing construction risks.

[0003] Traditional scaffolding systems usually rely on positive tie rods to ensure the stability of the scaffolding, but under strong winds and vortexes, these tie rods may not provide sufficient anti-overturning force. In addition, too many tie rods will take up valuable construction space and reduce construction efficiency. Therefore, it is particularly important to develop a scaffolding system that can effectively resist the traction of vortexes while maintaining construction space and efficiency. Summary of the invention

[0004] The present invention proposes a wall-attached scaffolding system based on anti-eddy current stability, aiming to solve the above problems. The system installs an anemometer and an air density measuring instrument on the roof of the building to monitor the wind speed and air density in real time, thereby calculating the eddy current wind pressure. Based on these data, the number and arrangement of the inclined rods can be accurately calculated to resist the eddy current traction force while ensuring the stability of the scaffolding and the construction space, which is achieved by the following technical solutions:

[0005] A wall-mounted scaffolding system based on anti-eddy current stability is an external wall scaffolding erected on the leeward side of a building. An anemometer and an air density measuring instrument are arranged on the roof of the building. The anemometer is used to obtain the current wind speed v, and the air density measuring instrument is used to measure the air density r. o The external wall scaffolding is connected to the building structure layer through a wall connecting member, and the wall connecting member includes a positive tie rod and a diagonal tie rod. The positive tie rod is used to ensure that the external wall scaffolding is resistant to overturning in the absence of wind, and the diagonal tie rod is used to resist the vortex formed by the wind on the leeward side of the building to add an outward pulling force to the external wall scaffolding.

[0006] Furthermore, the diagonal rods are arranged on both sides of the scaffolding, the diagonal rods on both sides are arranged symmetrically on the central axis of the building surface, and the diagonal rods on the same side are arranged vertically parallel to the building floors. One end of the diagonal rod is connected to the outer corner of the side of the scaffolding, and the other side is connected to the embedded hook of the building structure layer.

[0007] Furthermore, the embedded hook is arranged on the structural column of the building structure layer, and its hanging point is in the same horizontal plane as the connection point of the other end of the inclined rod. The connecting end of the inclined rod and the embedded hook is provided with a connecting flat head, and the connecting flat head is provided with a connecting hole. The embedded hook is connected to the inclined rod through the connecting hole.

[0008] Furthermore, according to the calculation formula of eddy current wind pressure and single tie rod axial force, the number of single-side inclined tie rods is calculated and set, where the position of the inclined tie rod is set according to the overall laying of the scaffolding:

[0009] Calculate wind pressure according to the local average wind speed and average air density:

[0010] W P =0.5r o v 2 f

[0011] W P is wind pressure [kN / m 2 ],r o is the air density [kg / m 3 ], v is the wind speed [m / s], f is the eddy current compensation coefficient;

[0012] Eddy current compensation coefficient: f is 1.1-2.5. When the wind force is greater than level 6, f=1.5, and the f value is appropriately increased with the increase of wind force; when the wind force is greater than level 8, f=2, and the f value is appropriately increased with the increase of wind force;

[0013] Among them, the number of diagonal tie rods on one side is required to be:

[0014] N≤(A1δ+A2W P ) / F

[0015] F is the design value of the axial force of a single tie rod, N is the number of designed diagonal tie rods, A1 is the cross-sectional area of ​​the tie rod, δ is the design value of the tensile strength of the tie rod, A2 is the scaffolding laying area, W P For wind pressure.

[0016] Furthermore, the anemometer is used to obtain the current wind speed v, and the air density measuring instrument is used to measure the current air density r. o , according to the current wind speed and current air density, it is determined whether the current inclined rod force meets the current anti-eddy current stability requirements:

[0017] Judgment result (1): When the current inclined rod force meets the current anti-eddy current stability requirements, the current inclined rod arrangement is not adjusted;

[0018] Judgment result (2): When the current force on the inclined tie rod does not meet the current anti-eddy current stability requirements, the number of inclined tie rods N on one side calculated according to the calculation formula minus the current number of inclined tie rods is obtained to obtain the number of inclined tie rods that need to be increased, and the corresponding number of inclined tie rods is increased at the arrangement position of the inclined tie rods on one side, and the same countermeasures are taken at the arrangement position of the inclined tie rods on the other side.

[0019] Furthermore, the judgment result (2) also includes: when the 24-hour wind speed measurement is below the local average wind speed, all the inclined rods added to cope with the strong vortex will be removed to open up the construction space to meet the construction requirements.

[0020] The wall-attached scaffolding system based on anti-eddy current stabilization of the present invention has the following significant beneficial effects:

[0021] (1) Since double vortices will be generated on the leeward side of the building, and the directions are respectively pulled toward the outer sides away from the scaffolding, the diagonal braces can directly resist the traction of the vortex, and the positive braces do not need to be used to resist the traction of the vortex, so that the scaffolding system can maintain normal anti-overturning while resisting the traction of the vortex. At the same time, the diagonal braces are directly parallel to the vortex direction, which can greatly increase the effective pulling force of the diagonal braces, reduce the number of diagonal braces, and ensure sufficient construction space to improve construction efficiency;

[0022] (2) Calculating the number of inclined braces according to the local average wind speed and average air density can ensure normal anti-vortex requirements and minimize the number of inclined braces to meet the space requirements for normal construction. When encountering typhoons or strong winds, the situation can be detected in time and corresponding response measures can be taken to ensure anti-vortex requirements. After the typhoon or strong wind ends, the situation can be detected in time and corresponding response measures can be taken to ensure normal construction space requirements.

[0023] That is, the force unloading device of the present application can enable the entire building facade scaffolding system to meet the anti-eddy current requirements and ensure efficient construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the description of the implementation modes will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the structure of the present invention.

[0026] Figure 2 It is a top view of the present invention.

[0027] Figure 3 It is a schematic diagram of the local structure of the present invention.

[0028] Figure 4 Schematic diagram of eddy current of the present invention.

[0029] Description of figure markings:

[0030] 100-exterior wall scaffolding, 101-anemometer, 102-air density measuring instrument, 103-positive tie rod, 104-diagonal tie rod, 105-embedded hook, 106-connecting flat head, 107-connecting hole. DETAILED DESCRIPTION

[0031] The following description of the embodiments will help the public better understand the present invention, but the specific embodiments given by the applicant cannot and should not be regarded as limitations on the technical solutions of the present invention. Any changes to the definitions of components or technical features, or formal rather than substantive changes to the overall structure should be regarded as the scope of protection defined by the technical solutions of the present invention.

[0032] In this application, unless otherwise clearly specified or limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements, or it can be only surface contact, or surface contact connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] The present invention is implemented by the following technical solutions:

[0034] A wall-attached scaffolding system based on anti-eddy current stability is implemented using the following technical solutions:

[0035] An external wall scaffolding 100 erected on the leeward side of a building is provided with an anemometer 101 and an air density meter 102 on the roof of the building, wherein the anemometer 101 is used to obtain the current wind speed v, and the air density meter 102 is used to measure the air density. The external wall scaffolding 100 is connected to the building structure layer through a wall connection member, and the wall connection member includes a positive tie rod 103 and a diagonal tie rod 104. The positive tie rod 103 is used to ensure that the external wall scaffolding 100 is anti-overturning in the absence of wind, and the diagonal tie rod 104 is used to resist the outward pulling force added to the external wall scaffolding 100 by the eddy current formed by the wind on the leeward side of the building. The diagonal tie rod 104 is provided to directly resist the eddy current traction force, and the positive tie rod 103 does not need to be used to resist the eddy current traction force, so that the scaffolding system can maintain normal anti-overturning while resisting the eddy current traction force.

[0036] The diagonal brace 104 is arranged on both sides of the scaffold 100, and the diagonal brace 104 on both sides is symmetrically arranged along the central axis of the building surface, and the diagonal brace 104 on the same side is arranged vertically and parallelly according to the building floors, one end of the diagonal brace 104 is connected to the outer corner of the side of the scaffold, and the other side is connected to the embedded hook 105 of the building structure layer; the embedded hook 105 is set on the structural column of the building structure layer, and its hanging point is in the same horizontal plane as the connection point of the other end of the diagonal brace 104, and the connecting end of the diagonal brace 104 and the embedded hook 105 is provided with a connecting flat head 106, and the connecting flat head 106 is provided with a connecting hole 107, and the embedded hook 105 is connected to the diagonal brace 104 through the connecting hole 107; setting the diagonal brace 104 directly parallel to the eddy current direction can greatly improve the effective pulling force of the diagonal brace 104, reduce the number of diagonal brace 104, and ensure sufficient construction space to improve construction efficiency.

[0037] According to the calculation formula of eddy current wind pressure and single tie rod axial force, the number of single-side inclined tie rods 104 is calculated and set, wherein the position of the inclined tie rods 104 is set according to the overall laying of the scaffolding 100:

[0038] Calculate wind pressure according to the local average wind speed and average air density:

[0039] W P =0.5r o v 2 f

[0040] W P is wind pressure [kN / m 2 ],r o is the air density [kg / m 3 ], v is the wind speed [m / s], f is the eddy current compensation coefficient;

[0041] Eddy current compensation coefficient: f is 1.1-2.5. When the wind force is greater than level 6, f=1.5, and the f value is appropriately increased with the increase of wind force; when the wind force is greater than level 8, f=2, and the f value is appropriately increased with the increase of wind force;

[0042] Among them, the number of diagonal tie rods on one side is required to be:

[0043] N≤(A1δ+A2W P ) / F

[0044] F is the design value of the axial force of a single tie rod, N is the number of designed diagonal tie rods, A1 is the cross-sectional area of ​​the tie rod, δ is the design value of the tensile strength of the tie rod, A2 is the scaffolding laying area, W P For wind pressure.

[0045] Calculating the number of inclined braces 104 according to the local average wind speed and average air density can ensure normal anti-vortex requirements, and can minimize the number of inclined braces 104 to meet the space requirements for normal construction.

[0046] The current wind speed v is obtained by the anemometer 101, and the current air density is measured by the air density measuring instrument 102. According to the current wind speed and the current air density, it is determined whether the current force on the inclined rod 104 meets the current anti-eddy current stability requirements:

[0047] Judgment result (1): when the force on the current inclined tie rod 104 meets the current anti-eddy current stability requirement, the current arrangement of the inclined tie rod 104 is not adjusted;

[0048] Judgment result (2): When the current force on the inclined tie rod 104 does not meet the current anti-eddy current stability requirement, the number of inclined tie rods 104 on one side calculated by the calculation formula is subtracted from the current number of inclined tie rods 104 to obtain the number of inclined tie rods 104 that need to be increased, and the corresponding number of inclined tie rods 104 is increased at the arrangement position of the inclined tie rods 104 on one side, and the same countermeasures are taken at the arrangement position of the inclined tie rods 104 on the other side. When encountering typhoons or strong winds, the situation can be detected in time and corresponding countermeasures can be taken to ensure the anti-eddy current requirements.

[0049] The judgment result (2) also includes: when the 24-hour wind speed measurement is below the local average wind speed, the inclined rods 104 added to deal with strong vortexes will be completely removed to open up the construction space to meet the construction requirements. After the typhoon or strong wind ends, the situation can be detected in time and corresponding response measures can be taken to ensure the space requirements for normal construction.

[0050] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0051] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A wall-attached scaffolding system based on anti-eddy current stability, characterized by: An external wall scaffolding (100) is erected on the leeward side of a building, and an anemometer (101) and an air density measuring instrument (102) are arranged on the roof of the building. The anemometer is used to obtain the current wind speed v, and the air density measuring instrument is used to measure the air density. The external wall scaffolding is connected to the building structure layer through a wall connecting member, and the wall connecting member includes a positive tie rod (103) and a diagonal tie rod (104). The positive tie rod is used to ensure that the external wall scaffolding is resistant to overturning in the absence of wind, and the diagonal tie rod is used to resist the outward pulling force added to the external wall scaffolding by the vortex formed by the wind on the leeward side of the building.

2. A wall-attached scaffolding system based on anti-eddy current stability according to claim 1, characterized in that: The inclined braces (104) are arranged on both sides of the scaffolding, the inclined braces on both sides are arranged symmetrically along the central axis of the building surface, and the inclined braces on the same side are arranged vertically and parallelly according to the building floors. One end of the inclined brace is connected to the outer corner of the scaffolding side, and the other end is connected to the embedded hook (105) of the building structure layer.

3. A wall-attached scaffolding system based on anti-eddy current stability according to claim 2, characterized in that: The embedded hook (105) is arranged on a structural column of a building structure layer, and its hanging point is in the same horizontal plane as the connection point of the other end of the inclined rod. The connecting end of the inclined rod and the embedded hook is provided with a connecting flat head (106), and the connecting flat head is provided with a connecting hole (107). The embedded hook is connected to the inclined rod through the connecting hole.

4. A wall-attached scaffolding system based on anti-eddy current stability according to claim 3, characterized in that: According to the calculation formula of eddy current wind pressure and single tie rod axial force, the number of single-side inclined tie rods is calculated and set, wherein the position of the inclined tie rod (104) is set according to the overall laying of the scaffolding: Calculate wind pressure according to the local average wind speed and average air density: W P =0.5r o v 2 f W P is wind pressure [kN / m 2 ],r o is the air density [kg / m 3 ], v is the wind speed [m / s], f is the eddy current compensation coefficient; Eddy current compensation coefficient: f is 1.1-2.

5. When the wind force is greater than level 6, f=1.5, and the f value is appropriately increased with the increase of wind force; when the wind force is greater than level 8, f=2, and the f value is appropriately increased with the increase of wind force; Among them, the number of diagonal tie rods on one side is required to be: N≤(AA1δ+AA2W P ) / F F is the design value of the axial force of a single tie rod, N is the number of designed diagonal tie rods, AA1 is the cross-sectional area of ​​the tie rod, δ is the design value of the tensile strength of the tie rod, AA2 is the scaffolding laying area, and W P For wind pressure.

5. A wall-attached scaffolding system based on anti-eddy current stability according to claim 4, characterized in that: The current wind speed v is obtained by the anemometer (101), the current air density is measured by the air density measuring instrument (102), and it is determined whether the force on the current inclined rod (104) meets the current anti-eddy current stability requirement based on the current wind speed and the current air density: Judgment result (1): When the current inclined rod force meets the current anti-eddy current stability requirements, the current inclined rod arrangement is not adjusted; Judgment result (2): When the current force on the inclined tie rod does not meet the current anti-eddy current stability requirements, the number of inclined tie rods N on one side calculated according to the calculation formula minus the current number of inclined tie rods is obtained to obtain the number of inclined tie rods that need to be increased, and the corresponding number of inclined tie rods is increased at the arrangement position of the inclined tie rods on one side, and the same countermeasures are taken at the arrangement position of the inclined tie rods on the other side.

6. A wall-attached scaffolding system based on anti-eddy current stability according to claim 5, characterized in that: The judgment result (2) also includes: when the 24-hour wind speed measurement is below the local average wind speed, all inclined rods (104) added to cope with strong vortexes are removed to open up construction space to meet construction requirements.

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