Installation and construction method for high-altitude large-angle outwards-inclined special-shaped curtain wall

Abstract

The invention discloses an installation and construction method for a high-altitude large-angle outwards-inclined special-shaped curtain wall. The high-altitude large-angle outwards-inclined special-shaped curtain wall installation construction method comprises the steps that the fulcrum position of a suspension mechanism is determined; the support assembly is assembled according to the fulcrum position of the suspension mechanism, so that an assembled support system is obtained; chemical anchor bolt anchoring is conducted, the pre-embedded plate is placed at the preset position on the parapet wall concrete structure, and therefore the anchored pre-embedded plate is obtained; the suspension mechanism is installed on the support system, the support system is connected with the anchored embedded plate, and therefore the installed suspension mechanism is obtained; installing an inclined track system on the tower to be installed; a parking platform is erected on the to-be-installed tower; and curtain wall plates are installed. The two key problems that under the conditions of large cantilever and large dip angle, the construction coverage range is limited, and the precision is difficult to control are successfully solved through the cantilever lengthening and inclined rail type hanging basket installation technology.

Description

Technical Field

[0001] The present application relates to the technical field of glass curtain wall installation, and in particular to a method for installing and constructing a high-altitude, large-angle, outward-inclined, special-shaped curtain wall. Background Art

[0002] Amidst the booming development of modern architecture, high-rise, irregularly shaped buildings, with their unique and innovative exterior designs, have become a striking and eye-catching feature of city skylines. However, the curtain wall installation challenges posed by the outward-sloping structures of these buildings have long been a thorny issue plaguing the construction industry. Their complex, outward-sloping forms and irregular curves make traditional vertical suspended platforms inadequate for covering the construction area, making them difficult to meet actual construction requirements.

[0003] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned deficiencies of the prior art.

[0004] Application Contents

[0005] The purpose of this application is to provide a high-altitude, large-angle, outward-inclined special-shaped curtain wall installation and construction method to overcome or at least alleviate at least one of the above-mentioned defects of the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides a method for installing and constructing a high-altitude, large-angle, outward-inclined, special-shaped curtain wall. The method comprises:

[0007] Using the core axis of the tower to be installed as a reference, use a total station to accurately lay out and determine the position of the suspension mechanism's fulcrum;

[0008] Assembling the bracket components according to the positions of the suspension mechanism fulcrums, thereby obtaining an assembled bracket system;

[0009] Perform chemical anchoring and place the embedded plate at a predetermined position on the parapet concrete structure, thereby obtaining the embedded plate after anchoring;

[0010] Install the suspension mechanism on the bracket system, and connect the bracket system to the embedded plate that has been anchored, thereby obtaining the installed suspension mechanism;

[0011] Installing the inclined track system on the tower to be installed;

[0012] Set up a docking platform on the tower to be installed;

[0013] The curtain wall keels are transported and installed through the suspension mechanism, the inclined track system and the erection of the docking platform.

[0014] Optionally, the step of using a total station to accurately lay out the core tube axis of the tower to be installed as a reference to determine the position of the suspension mechanism fulcrum includes:

[0015] Using the tower core axis as a reference, a total station was used to precisely locate the suspension mechanism's pivot points. During the measurement process, the distance between the front and rear pivot points was strictly controlled to 4.4m, with an allowable deviation of ≤10mm, while also ensuring that the elevation error was ≤5mm.

[0016] Optionally, assembling the bracket assembly according to the position of the suspension mechanism fulcrum to obtain an assembled bracket system includes:

[0017] Assemble the front bracket according to the position of the front and rear fulcrums. The front bracket is assembled with 80×80×4mm square tubes. During the first installation, the cantilever length is set to 700mm. During the installation process, it is reinforced by using double-track φ8.3mm steel wire ropes. Each track uses ≥4 rope clamps, and the rope clamp spacing is uniformly set to 150mm.

[0018] Lay a 50mm thick wooden pad on the bottom of the rear support, with an area of ​​0.6㎡;

[0019] The counterweights are fixed in series to prevent them from sliding during construction.

[0020] Optionally, the chemical anchoring to place the embedded plate at a predetermined position on the parapet concrete structure, thereby obtaining the anchored embedded plate, includes:

[0021] Place the 250×250×8mm embedded plate at the predetermined position on the parapet concrete structure;

[0022] Use an electric drill to drill holes on the embedded plate and insert 4-M16×190mm chemical anchor bolts into the holes;

[0023] Use a torque wrench to fix the chemical anchor bolts to the embedded plate;

[0024] After the burial is completed, a pull-out test is carried out.

[0025] Optionally, the step of installing the suspension mechanism on the support system and connecting the support system to the anchored embedded plate to obtain the installed suspension mechanism includes:

[0026] Place the suspension mechanism on the bracket system, ensuring that the position of the suspension mechanism corresponds to the position of the embedded plate;

[0027] Use connectors to firmly connect the suspension mechanism to the embedded plate;

[0028] After the connection is completed, check the stability of the suspension mechanism.

[0029] Optionally, the step of installing the inclined track system on the tower to be installed includes:

[0030] Install the upper fixing point, install the I-beam across the parapet, weld the square tube at the rear end, and then fix the I-beam to the concrete at the base of the wall through the embedded plate and 2-M16 chemical anchor bolts; weld the limit steel column at the front end of the I-beam, and control the spacing error to ≤3mm;

[0031] For the installation of the lower fixing point, the I-beam is installed through the floor slab and anchored with three U-bolts. The bolt spacing is 600mm, and one bolt is set at the root and the middle to ensure the reliability of the anchoring. After the anchoring is completed, the gap is filled with fireproof mortar.

[0032] The two ends of the rail wire rope are fixed to the upper and lower I-beam limit columns respectively. During the tensioning process, a dynamometer is used to accurately control the tensioning force to ensure that the measured inclination angle after tensioning is 65°±2° and the tensioning force is controlled at 8~10kN.

[0033] Optionally, setting up a docking platform on the tower to be installed includes:

[0034] The platform for the hanging basket is constructed using cantilevered I-beams and wooden planks. The wooden planks are 50mm thick and should be laid completely to ensure a smooth and safe platform surface. The I-beams on the docking platform are used not only to dock the hanging basket but also to secure the guide ropes. The guide ropes must be installed at an angle that allows the hanging basket to move up and down diagonally along the ropes. The wooden planks should be laid with a spacing of ≤300mm to ensure a smooth and safe platform surface.

[0035] Use steel bars to set up guardrails at the edge of the platform;

[0036] Two steel cables are installed at the front end of the platform and tied downward to the preset structural beams of the tower to be installed. Each steel cable is equipped with a turnbuckle. During the installation process, the sinking amount of the front end of the platform is accurately controlled to ≤5mm by adjusting the turnbuckle, ensuring that the horizontal deviation of the platform is ≤2mm / m.

[0037] Optionally, the transporting and installing of curtain wall keels by using the suspension mechanism, the inclined track system and the provision of a docking platform includes:

[0038] The curtain wall is hoisted in sections according to the dividing lines. When the first section is hoisted, a total station measuring device is used for precise positioning to ensure that the positioning deviation is ≤3mm. During the subsequent hoisting of sections, a laser line projector is used for calibration to strictly control the height difference between adjacent sections to ≤2mm.

[0039] During fixture installation, accurately adjust the fixture spacing to within a range of 0.2 to 0.3 m. During bolt tightening, use a torque wrench to perform initial tightening with a torque set to 20 N·m, then perform final tightening with a torque of 40 N·m. Mark the bolts with anti-loosening marks to prevent them from loosening.

[0040] For welding nodes, welding rods are used for welding operations. During the welding process, the weld height is strictly controlled to be ≥8mm. After welding, a thickness gauge is used to detect the thickness of the applied anti-rust paint to ensure that the thickness is ≥180μm to ensure the corrosion resistance and connection strength of the welding nodes.

[0041] Optionally, after setting up the docking platform on the tower to be installed and before transporting and installing the curtain wall panels through the suspension mechanism, the inclined track system and the setting up of the docking platform, the high-altitude large-angle outward-inclined special-shaped curtain wall installation construction method further includes:

[0042] The suspension mechanism is debugged and load tested, wherein the debugging and load testing of the suspension mechanism includes:

[0043] No-load trial run: Start the hoist and control its running speed within the range of 9.5m / min±5%. During the trial run, check the triggering of the limit switch to ensure that the limit switch can be triggered in time when the platform is ≥300mm away from the track end point. At the same time, perform a performance test on the safety lock. When the basket tilts 3°, the safety lock should issue a warning signal. When it tilts 8°, the safety lock should be able to be completely locked to ensure the safety of the basket operation.

[0044] Rated load test: A uniformly distributed load of 300kg is applied to the hanging basket platform to simulate actual construction conditions. After loading, the hanging basket is operated three times. During this process, testing equipment is used to check the uniformity of the force applied to the wire ropes, ensuring that the tension difference within each rope is ≤10%. Deformation of the suspension mechanism is also observed, with a deflection requirement of ≤L / 200.

[0045] This application utilizes cantilever extension and tilted track-mounted hanging basket installation technology, meticulously designs a customized suspension mechanism, constructs a precise tilting guide system, and implements refined node control. This approach successfully overcomes the two key challenges of limited construction coverage and difficult precision control under conditions of large cantilevers and large inclination angles. This results in a scientific, systematic, and highly targeted construction method specifically for outward-inclined curtain walls. This method provides a practical new approach and method for similar complex projects, with high potential for widespread application. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a flow chart of a method for installing and constructing a high-altitude, large-angle, outward-inclined special-shaped curtain wall according to an embodiment of the present application.

[0047] Figure 2 yes Figure 1 Schematic diagram of the structure of the hanging basket shown.

[0048] Figure 3 yes Figure 1 The structural diagram of the suspension mechanism is shown.

[0049] Figure 4 yes Figure 1 Plan of the tower's tilt-track gondola shown.

[0050] Figure 5 yes Figure 1 A cross-section of the tower's tilted track gondola is shown.

[0051] Figure 6 yes Figure 1 The diagram shows the installation node diagram of the upper end of the tower inclined track hanging basket.

[0052] Figure 7 yes Figure 1 The diagram shows the installation node diagram of the lower end of the tower inclined track type hanging basket.

[0053] Figure 8 yes Figure 1 The tower inclined track type hanging basket basket installation node diagram shown.

[0054] Figure 9 This is a schematic diagram of the actual gondola for the second phase expansion of the international airport's air traffic control project. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be understood as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as limiting the scope of protection of this application.

[0057] like Figure 1 The installation and construction methods of the high-altitude, large-angle, outward-inclined special-shaped curtain wall shown include:

[0058] Using the core axis of the tower to be installed as a reference, use a total station to accurately lay out and determine the position of the suspension mechanism's fulcrum;

[0059] Assembling the bracket components according to the positions of the suspension mechanism fulcrums, thereby obtaining an assembled bracket system;

[0060] Perform chemical anchoring and place the embedded plate at a predetermined position on the parapet concrete structure, thereby obtaining the embedded plate after anchoring;

[0061] Install the suspension mechanism on the bracket system, and connect the bracket system to the embedded plate that has been anchored, thereby obtaining the installed suspension mechanism;

[0062] Installing the inclined track system on the tower to be installed;

[0063] Set up a docking platform on the tower to be installed;

[0064] The curtain wall panels are transported and installed through the suspension mechanism, the inclined track system and the docking platform.

[0065] In this embodiment, the method of using the core tube axis of the tower to be installed as a reference and accurately setting out using a total station to determine the position of the suspension mechanism fulcrum includes:

[0066] Using the tower core axis as a reference, a total station was used to precisely lay out the locations of the suspension mechanism's pivot points. During the measurement process, the distance between the front and rear pivot points was strictly controlled to 4.4m, with an allowable deviation of ≤10mm and an elevation error of ≤5mm. This precise positioning and setting out laid a solid foundation for the subsequent installation of the suspension mechanism.

[0067] In this embodiment, assembling the bracket components according to the positions of the suspension mechanism fulcrums to obtain an assembled bracket system includes:

[0068] According to the position of the front and rear fulcrums, the front bracket is assembled with 80×80×4mm square tubes. The parapet is 1.5m high and 1.4m cantilevered. According to the external eaves structure and actual needs on site, the cantilever length of the hanging basket is not more than 2.0m. The distance between the front and rear fulcrums of the hanging basket is 4.4m. As the construction progresses, it is adjusted to 2.0m according to actual needs. During the installation process, double-track φ8.3mm steel wire ropes are used for tensioning and reinforcement. Each steel wire rope uses ≥4 rope clamps, and the rope clamp spacing is uniformly set to 150mm to ensure the firmness of the tensioning.

[0069] A 50mm thick wooden pad with an area of ​​0.6㎡ is laid on the bottom of the rear support to effectively distribute the load of the counterweight. The counterweights are fixed in series to prevent them from sliding during construction and ensure the stability of the rear support.

[0070] The counterweights are fixed in series to prevent them from sliding during construction. Specifically, a 50mm thick wooden pad is laid on the bottom of the rear support to effectively distribute the load of the counterweights. The counterweights are fixed in series to prevent them from sliding during construction and ensure the stability of the rear support.

[0071] In this embodiment, the chemical anchor bolt anchoring method is used to place the embedded plate at a predetermined position on the parapet concrete structure, thereby obtaining the anchored embedded plate. The method includes:

[0072] Place the 250×250×8mm embedded plate at the predetermined position on the parapet concrete structure;

[0073] Use an electric drill to drill holes on the embedded plate and insert 4-M16×190mm chemical anchor bolts into the holes;

[0074] Use a torque wrench to fix the chemical anchor bolts to the embedded plate;

[0075] After the burial is completed, a pull-out test is carried out.

[0076] Specifically, 4-M16×190mm chemical anchors are used to secure the embedded plate (250×250×8mm) to the parapet concrete structure. During anchor installation, the anchor depth is strictly controlled to be ≥190mm, with a vertical deviation of ≤1°. After installation, a pull-out test is conducted in accordance with regulatory requirements to ensure a single-bolt pull-out force of ≥16kN. Only after passing the test can subsequent construction proceed.

[0077] See also Figures 2 to 4 In this embodiment, the steps of installing a suspension mechanism (e.g., a hanging basket) on a support system and connecting the support system to the anchored embedded plate to obtain an installed suspension mechanism include:

[0078] Place the suspension mechanism on the bracket system, ensuring that the position of the suspension mechanism corresponds to the position of the embedded plate;

[0079] Use connectors to firmly connect the suspension mechanism to the embedded plate;

[0080] After the connection is completed, check the stability of the suspension mechanism.

[0081] See also Figures 5 to 8 In this embodiment, the step of installing the inclined track system on the tower to be installed includes:

[0082] Install the upper fixing point (for example, the upper fixing point can be installed on the 18th floor of the tower to be installed). Install the I-beam across the parapet wall, weld the rear end square tube, and then fix the I-beam to the concrete at the base of the wall using an embedded plate (200×200×8mm) and 2-M16 chemical anchor bolts. Weld a limit steel column at the front end of the I-beam to control the spacing error to ≤3mm.

[0083] Install the lower fixing point (for example, the lower fixing point can be installed on the 13th floor of the tower to be installed). The I-beam is installed through the floor slab and anchored with three U-bolts. The bolt spacing is 600mm, and one bolt is installed at the root and the middle to ensure the reliability of the anchoring. After the anchoring is completed, the gap is filled with fireproof mortar.

[0084] The two ends of the rail wire rope are fixed to the upper and lower I-beam limit columns respectively. During the tensioning process, a dynamometer is used to accurately control the tensioning force to ensure that the measured inclination angle after tensioning is 65°±2° and the tensioning force is controlled at 8~10kN.

[0085] In this embodiment, setting up a docking platform on the tower to be installed includes:

[0086] Using 13 layers of guide rope fixing rods as support, 50mm thick wooden planks are laid. When laying wooden planks, the spacing should be ≤300mm to ensure the flatness and safety of the platform surface.

[0087] Use steel bars to set up guardrails at the edge of the platform;

[0088] Two steel cables are installed at the front end of the platform and tied downward to the preset structural beams of the tower to be installed. Each steel cable is equipped with a turnbuckle. During the installation process, the sinking amount of the front end of the platform is accurately controlled to ≤5mm by adjusting the turnbuckle, ensuring that the horizontal deviation of the platform is ≤2mm / m.

[0089] In this embodiment, the method of transporting and installing curtain wall panels by using the suspension mechanism, the inclined track system, and the provision of a docking platform includes:

[0090] The curtain wall is hoisted in sections according to the dividing lines. When the first section is hoisted, a total station measuring device is used for precise positioning to ensure that the positioning deviation is ≤3mm. During the subsequent hoisting of sections, a laser line projector is used for calibration to strictly control the height difference between adjacent sections to ≤2mm.

[0091] During fixture installation, accurately adjust the fixture spacing to within a range of 0.2 to 0.3 m. During bolt tightening, use a torque wrench to perform initial tightening with a torque set to 20 N·m, then perform final tightening with a torque of 40 N·m. Mark the bolts with anti-loosening marks to prevent them from loosening.

[0092] In this embodiment, during the bolt tightening process, the required torque value can be calculated using the following formula:

[0093] in,

[0094] T is the required torque value (N·m), which represents the torque required to be applied to the bolt to achieve the design preload; θ is the rotation angle (rad) during the bolt tightening process, which is the rotation angle from the beginning of the bolt tightening to the final tightening torque; K(θ) is the torque coefficient, which is a function of the rotation angle θ, indicating that the torque coefficient may change with the change of the rotation angle during the tightening process; F 预紧 is the design required preload (N), which is determined according to the installation requirements of the curtain wall panels and the specifications of the bolts; μ(θ) is the friction coefficient, which is a function of the rotation angle θ, indicating that the friction coefficient may change with the change of the rotation angle during the tightening process; N(θ) is the normal force (N), which is a function of the rotation angle θ, indicating that the normal force may change with the change of the rotation angle during the tightening process; r is the nominal radius of the bolt; λ is the attenuation coefficient (1 / s), which indicates the rate at which the torque decays with time and is affected by factors such as the bolt material, lubrication conditions and tightening speed; t is the tightening time (s), which is the time from the beginning of tightening the bolt to the reaching of the final tightening torque; e -λt is the attenuation factor, which represents the effect of torque attenuation over time.

[0095] The torque value is dynamically adjusted based on the bolt specifications, material properties, lubrication conditions, and rotation angle during tightening to ensure that the preload force of the bolted connection meets the design requirements. Initial and final tightening are performed using a torque wrench, with the torque values ​​set to 20 N·m and 40 N·m, respectively. These values ​​can be fine-tuned based on the calculation results of the above formula to more accurately control the preload force.

[0096] For welding nodes, welding rods are used for welding operations. During the welding process, the weld height is strictly controlled to be ≥8mm. After welding, a thickness gauge is used to detect the thickness of the applied anti-rust paint to ensure that the thickness is ≥180μm to ensure the corrosion resistance and connection strength of the welding nodes.

[0097] In this embodiment, after setting up the docking platform on the tower to be installed, and before transporting and installing the curtain wall panels through the suspension mechanism, the inclined track system, and the setting up of the docking platform, the high-altitude, large-angle, outward-inclined, special-shaped curtain wall installation construction method further includes:

[0098] The suspension mechanism is debugged and load tested, wherein the debugging and load testing of the suspension mechanism includes:

[0099] No-load trial run: Start the hoist and control its running speed within the range of 9.5m / min±5%. During the trial run, check the triggering of the limit switch to ensure that the limit switch can be triggered in time when the platform is ≥300mm away from the track end point. At the same time, perform a performance test on the safety lock. When the basket tilts 3°, the safety lock should issue a warning signal. When it tilts 8°, the safety lock should be able to be completely locked to ensure the safety of the basket operation.

[0100] Rated load test: A uniformly distributed load of 300kg is applied to the hanging basket platform to simulate actual construction conditions. After loading, the hanging basket is operated three times. During this process, testing equipment is used to check the uniformity of the force applied to the wire ropes, ensuring that the tension difference within each rope is ≤10%. Deformation of the suspension mechanism is also observed, with a deflection requirement of ≤L / 200.

[0101] In this embodiment, the safety risk of working at heights can be evaluated using the following formula:

[0102] Among them, R is the safety risk quantification value, which represents the safety risk level of the current high-altitude working environment. It is a dimensionless quantity and the threshold can be set according to the actual situation to divide the risk level; v w is the real-time wind speed (m / s), which can be measured by an anemometer and is a value that can be obtained in real time; v 限 is the maximum wind speed permitted for construction (m / s), which is determined according to safety regulations and is a fixed value. For example, when the wind speed exceeds level 6 (about 12m / s), high-altitude work is usually prohibited; T is the ambient temperature (℃), which is a value that can be obtained in real time; T 舒适 It is the median value of the temperature range that the human body feels comfortable (such as 25℃), which can be adjusted according to actual conditions and is a fixed value; T 舒适，范围 It is half of the temperature range that the human body feels comfortable (if the comfortable range is 20-30℃, then T 舒适，范围 =5), which indicates the sensitivity of the human body to temperature changes and is a fixed value; H is the ambient humidity (%), which is a value that can be obtained in real time; H 适宜 The median value of the humidity range suitable for operation (such as 50%) can be adjusted according to actual conditions and is a fixed value; H 适宜，范围It is half of the humidity range suitable for operation (for example, if the suitable range is 40 - 60%, then \(H_{suitable, range}=10\)), representing the sensitivity of the human body to humidity changes, which is a determined value; \(H\) 作业 is the operation height (m), the vertical distance from the operation surface to the ground, which is a value that can be obtained in real time; \(H\) 安全 is the threshold value of the safe operation height (such as 100m), and additional safety measures may be required when exceeding this height, which is a determined value; \(t\) 作业 is the operation time (hours), the time length from the start of the operation to the current time, which is a value that can be obtained in real time; \(t\) 标准 is the standard operation time (such as 8 hours), and the fatigue degree of workers may need to be considered when exceeding this time, which is a determined value.

[0103] By inputting parameters such as the actual wind speed, operation environment temperature, humidity, operation height, and operation time, the quantitative evaluation value of the safety risk can be calculated. According to the size of the evaluation value, corresponding safety measures can be taken, such as adjusting the operation time, strengthening safety protection, etc., to ensure the safe progress of high-altitude operations.

[0104] For example, assume the following parameters:

[0105] \(v\) w \( = 8m / s\), \(v\) 限 \( = 12m / s\), \(T = 30^{\circ}C\), \(T\) 舒适 , \(T\) 舒适，范围 \( = 25^{\circ}C\), \(T\) 舒适，范围 \( = 5\), \(H = 70\%\), \(H\) 适宜 \( = 50\%\), \(H\) 适宜，范围 \( = 10\%\), \(H\) 作业 \( = 60m\), \(H\) 安全 \( = 100m\), \(t\) 作业 \( = 3\) hours, \(t\) 标准 \( = 8\) hours, then:

[0106]

[0107] For example, it can be set that when \(R > 5\), it is a high risk and immediate safety measures need to be taken; when \(3 < R\leq5\), it is a medium risk and safety monitoring needs to be strengthened; when \(R\leq3\), it is a low risk and normal operation can be carried out.

[0108] In this embodiment, when conducting the rated load test, the following formula can be used to simulate the dynamic behavior of the suspension mechanism under the action of the load:

[0109] Among them,

[0110] m is the total mass of the suspension mechanism and the hanging basket; y is the displacement of the suspension mechanism under the action of wind load; c is the linear damping coefficient; α is the nonlinear damping coefficient, which reflects the nonlinear relationship between wind load and suspension mechanism speed; k is the linear stiffness coefficient; β is the nonlinear stiffness coefficient, which reflects the nonlinear change of suspension mechanism stiffness with displacement; F wind (t) is the wind load that changes with time; γ is the nonlinear coefficient of wind load, which reflects the nonlinear change of wind load with the speed of the suspension mechanism.

[0111] The above model is a second-order nonlinear ordinary differential equation that can simulate the complex dynamic response of the suspension mechanism under wind load, such as limit cycle oscillations and bifurcations. The formula of this application can more accurately simulate the dynamic response of the suspension mechanism under wind load, providing a more reliable theoretical basis for the design of the suspension mechanism and the analysis of wind resistance stability. By inputting parameters such as the mass, damping, elasticity, and load size and change mode of the suspension mechanism, the dynamic response indicators such as displacement and velocity of the suspension mechanism can be calculated. These indicators can be used to evaluate the stability and safety of the suspension mechanism and optimize the design of the suspension mechanism.

[0112] The following further elaborates on the application by taking the construction of the outward-inclined conical curtain wall on the 13th to 18th floors of the tower of the second phase expansion air traffic control project of an international airport as an example. It should be understood that this example does not constitute any limitation to the application.

[0113] Adaptive cantilever extension structure design:

[0114] Double-knot reinforced cantilever: 80×80×4mm square tube is used to make the extended cantilever beam, with the front end cantilever length ≤2.0m, and double-track φ8.3mm steel wire rope knot (breaking tension 53.6kN) is used to solve the problem of horizontal load transfer of the outward-inclined structure and ensure that the deformation of the cantilever end is ≤L / 400 (L is the cantilever length).

[0115] Optimized counterweight configuration: 1000kg counterweight (25kg / piece × 40 pieces) is configured, and ≥0.5㎡ wooden pads are laid on the bottom of the rear bracket to disperse the load. The anti-overturning coefficient is calculated to be ≥3.0 (such as the stability moment at the 18th floor is 48.34kN·m, the overturning moment is 13.95kN·m, and the stability coefficient is 3.47), which meets the wind resistance requirements in the severe cold zone B with strong winds (design wind speed ≥25m / s).

[0116] Inclined track guidance system for precise positioning:

[0117] Bidirectional fixed track: The upper and lower fixed points are made of 20# I-steel (section modulus 237cm 3), the 18th-floor parapet embedded plate (250×250×8mm) is fixed with M16 chemical anchor bolts (pull-out force ≥16kN), and the 13th-floor through-slab U-bolts (3 pieces / place) are anchored to form a guide wire rope (φ8.3mm) track with an inclination angle of ≤65°, which constrains the hanging basket to run obliquely along the outward curved surface, with a positioning deviation of ≤5mm.

[0118] Limiting and anti-deviation device: A φ20mm limiting steel column (spacing deviation ≤3mm) is welded at the front end of the I-beam to prevent the wire rope from sliding; the fitting accuracy of the hanging basket pulley and the track is ≤2mm, ensuring that the running track is fully matched with the inclination angle of the curtain wall (15°~30°).

[0119] Safe transition without landing docking platform:

[0120] Suspended platform construction: A docking platform is constructed on the 13th floor using guide rope fixing rods and 50mm thick wooden springboards with a load-bearing capacity of ≥300kg / ㎡. A 1.2m high protective railing and a 180mm skirting board are set on the edge of the platform to solve the problem of safe transition of the hanging basket from the 13th floor to the 18th floor without ground support.

[0121] Pull-down wire rope balance: The front end of the platform uses a φ8.3mm wire rope to pull it downward (the calculated tension value is ≤20kN) to offset the upward component of the track wire rope and ensure that the platform horizontality deviation is ≤2mm / m.

[0122] Millimeter-level precision control process:

[0123] Three-dimensional coordinate verification: Use a total station with an angle measurement accuracy of ±1″ to establish an independent coordinate system. When positioning the suspension mechanism, check the distance between the front and rear fulcrums (deviation ≤ 10mm) and the elevation (error ≤ 5mm). The deviation between the coordinates of the hanging basket platform and the positioning of the curtain wall panel is controlled to ≤ 5mm.

[0124] Fine adjustment of nodes: The curtain wall panels and the hanging basket platform are connected by customized clamps, the spacing is adjusted to 0.2-0.3m, the bolt torque is controlled by a fixed value of 40N·m, the weld height of the welding node is ≥8mm, and two coats of epoxy zinc-rich primer are applied after welding (thickness ≥60μm / coat), and the total thickness of the anti-corrosion layer is ≥180μm.

[0125] Suspension mechanism force model: Through the ingenious design of the dual balancing mechanism of "counterweight anti-overturning + structural anchor bolt anti-pullout", the cantilever load of the front bracket is effectively offset. Specifically, the gravity (torque) generated by the counterweight block and the anchoring force (torque) applied to the structure by the chemical anchor bolts of the rear bracket work together. The calculation formula is:

[0126]

[0127] Where: G is the weight of the counterweight; F is the total pull-out force of the chemical anchor; L1 / L2 / L3 are the levers; Q is the hanging basket and construction load.

[0128] Through precise mechanical calculations and reasonable parameter configuration, we ensure that the anti-overturning coefficient always meets the requirements and guarantee the stability of the suspension mechanism under complex working conditions.

[0129] Inclined track guidance principle: An inclined steel wire rope fixed at two points is used as the operating track. The breaking tension safety factor of this steel wire rope is ≥9, which provides extremely high safety. The hanging basket pulley group slides obliquely along the track on this inclined steel wire rope. By precisely adjusting the positions of the upper and lower fixed points, with the horizontal spacing strictly controlled to ≤4.4m and the vertical height difference ≤50m, accurate track fitting of the outward-inclined curved surface is achieved. During actual construction, the tension of the guide wire rope is controlled at 15% to 20% of the breaking tension. This not only ensures the service life of the wire rope, but also ensures that its sag is ≤1 / 100 of the span, allowing the hanging basket to operate stably along the designed inclined track.

[0130] A ground-free support transfer mechanism: A docking platform is installed on the 13th floor, connected to the suspension mechanism on the 18th floor, creating a "high-altitude relay" support system. In this system, the load borne by the platform is transmitted to the main structure via I-beam rails. Based on actual monitoring and mechanical analysis, this system effectively prevents the risk of sway during suspended operation, limiting the sway amplitude to ≤100mm. This mechanism provides a reliable guarantee for the safe and stable operation of the suspended basket without ground support.

[0131] Technical Preparation: Construction technicians thoroughly studied the curtain wall design drawings, analyzing every detail and every node. They also carefully familiarized themselves with the hanging basket manual, understanding its performance parameters, operating specifications, and maintenance requirements. Based on this, they meticulously prepared a special construction plan based on the actual project situation.

[0132] Resource Preparation: Based on the construction plan requirements, a high-performance ZLP-630 suspended platform was deployed. Its rated load capacity is 630 kg, but to ensure construction safety, the load limit is 300 kg. A total station with an angle measurement accuracy of ±1″ was used for precise measurement and layout, ensuring the accuracy of construction locations. A chemical anchor puller was also installed to test the pullout force of chemical anchors to ensure anchoring quality.

[0133] Material and component control:

[0134] The wire ropes are checked one by one for broken wires, wear and rust, and the factory certificate and breaking strength test report are verified. Unqualified products are immediately removed from the site.

[0135] Chemical anchor bolts are checked against furnace batch numbers, and 5% of each batch is sampled for pull-out testing. If the pull-out force does not meet the standard, double retest is required. If it still fails, the entire batch will be banned.

[0136] The counterweights should be counted according to the designed quantity, and the weight error of a single piece should be ≤±2%. Damaged or cracked counterweights are strictly prohibited from use.

[0137] Quality control during construction process:

[0138] 1. Measurement and layout control

[0139] An independent coordinate system is established with the main axis of the building as the benchmark. The layout error of the total station is ≤2mm. Important nodes (such as the position of the track fixing rod) are calibrated using the three-level "initial measurement-re-measurement-final measurement" to form a "Measurement and Layout Acceptance Record".

[0140] After the suspension mechanism is positioned, check that the distance deviation between the front and rear fulcrums is ≤10mm and the elevation error is ≤5mm to ensure that the calculation parameters of the anti-overturning moment are accurate.

[0141] 2. Installation process control

[0142] Suspension mechanism: When fixing the I-beam of the tower's inclined track, the tightening torque of the U-bolts should be ≥40N·m, and the gaps between the bolts and the floor slabs should be filled with fireproof mortar.

[0143] Basket platform: A simulated tilt test is conducted before installing the safety lock, with the lock rope triggered at 3° and completely locked within 8°; the leakage protection function is tested after the electrical system is connected, with the operating current ≤30mA and the response time ≤0.1s.

[0144] Node connection: When connecting the curtain wall panels to the hanging basket platform fixture, use a feeler gauge to check that the fitting gap is ≤2mm. Tighten the bolts twice: initial tightening (50% torque) and final tightening (100% torque). Mark important nodes with anti-loosening marks.

[0145] 3. Acceptance of concealed works

[0146] Before concealing the embedded plate welding, chemical anchor bolt burial, rail wire rope fixing points, etc., take video data and fill out the "Concealed Project Acceptance Form". The acceptance content includes the anchor bolt depth, weld length, number of wire rope clips, etc., and it can only be covered after being signed by the supervising engineer.

[0147] Finished product protection measures

[0148] Basket protection: Rubber corner guards are pasted on the edge of the platform to prevent collision with the curtain wall panel; grease is applied to the track wire rope every week to prevent rust from affecting the guiding performance; after the idle basket is powered off, it is covered with waterproof cloth to prevent the electrical components from getting damp.

[0149] Protection of curtain wall panels: During the installation process, it is prohibited to use the hanging basket as a load-bearing fulcrum. When the panels are temporarily stored, wooden planks should be laid on the bottom and the surface should be covered with a protective film. During welding operations, fire-proof asbestos cloth should be set up to prevent welding slag from splashing and damaging the panel coating.

[0150] Table 7.2.4-1 Measures for common quality problems

[0151]

[0152] Safety Management for High-Aerial Work: All personnel performing high-altitude work must wear a five-point double-hook safety harness. The "hang high, use low" principle must be strictly adhered to. Safety harnesses must be independently suspended from a dedicated lifeline (φ18mm high-strength fiber rope) attached to the main structure of the building or from a reliable anchor point. They must not be attached to the hanging basket bracket or wire rope. Workers must wear non-slip, insulated safety shoes, impact-resistant helmets (with chin straps), and high-visibility reflective vests to ensure their safety in complex weather conditions.

[0153] Before daily operations, the safety officer will check the wear of the safety belt buckles and the anti-slip grooves on the soles of the shoes. It is prohibited to wear protective equipment that does not meet safety standards while on duty.

[0154] The platform is protected by a 1.2m high guardrail around the perimeter, with a 0.6m horizontal crossbar in the middle. A 180mm high kickboard, made of steel plate ≥3mm thick, is installed at the bottom to prevent tools and materials from falling. The platform floor is paved with non-slip perforated steel plate. Regular inspections are conducted for cracked welds and plate deformation. If any potential hazards are found, the platform is immediately shut down for inspection and repair.

[0155] In severe weather (wind force ≥ level 5, rain and snow, visibility <50m), it is strictly prohibited to operate a suspended basket. The lifted suspended basket must be lowered to the ground, the power supply must be cut off, and a windproof cable (φ12mm steel wire rope) must be used to securely fix the suspension mechanism to the main building. Each suspended basket must have no less than 4 fixing points.

[0156] Safety control of hanging basket equipment:

[0157] Daily inspection and maintenance of equipment: Establish a "Daily Inspection List for Suspension Baskets" and have professional maintenance personnel check each item:

[0158] Wire rope: Visually inspect for broken wires (replace immediately if more than 3 broken wires are present in a single strand), wear (scrap if diameter reduction exceeds 7%), and rust. Check the number of rope clips (≥4) and their spacing (150-200mm). Check whether the safety bend is displaced.

[0159] Safety lock: Manually trigger the tilt lock function, which should trigger an alarm at 3° and completely lock within 8°. If the movement is not sensitive, send it for inspection and calibration immediately;

[0160] Electrical system: Test the leakage protector (operating current ≤ 30mA, response time ≤ 0.1s), check whether the cable insulation layer is damaged, and the grounding resistance ≤ 4Ω.

[0161] Perform deep maintenance every week, add high-temperature resistant grease to the hoist gearbox, clean the dust inside the safety lock, and record maintenance data for archiving.

[0162] Load control and operating specifications strictly follow the 300kg load limit for hanging baskets. The load must be evenly distributed. Overloading or concentrated stacking of heavy objects is prohibited (single load ≤ 150kg / ㎡). No more than two people are allowed to operate the equipment. Tools must be placed in a dedicated tool bag. Hand-held material operation is prohibited.

[0163] When the platform is in operation, personnel are prohibited from standing on the edge of the platform or climbing the guardrail. During the lifting process, maintain stability and avoid sudden stops and starts. After reaching the working floor, first secure the temporary tie between the platform and the building structure (φ10mm steel wire rope) before proceeding with curtain wall installation.

[0164] Temporary power supply and fire safety:

[0165] The electrical system utilizes a TN-S three-phase, five-wire power supply system. The distribution boxes and switch boxes adhere to the "one machine, one switch, one leakage, one box" principle, and the leakage protector parameters match (rated operating current ≤ 30mA, operating time ≤ 0.1s). The grounding resistance of electrical equipment is tested monthly, and any value greater than 4Ω is immediately investigated for fault detection.

[0166] Nighttime construction lighting uses a safe 36V voltage, with lighting fixtures at least 2.5m above the ground. Power cables must be laid overhead or in conduits. Unauthorized wiring is prohibited. Electricians must inspect cable joints daily for waterproofing and insulation, and live maintenance is prohibited.

[0167] Safety measures for special working conditions:

[0168] Special safety measures for the inclined track-type hanging basket are aimed at the inclined track system of the tower's outward-inclined cone structure. Before installation, the inclination angle of the guide wire rope should be checked (≤65°), the limiting steel column and the track I-beam should be firmly welded (weld height ≥8mm), and the wire rope tension should be checked daily (droop ≤1 / 100 of the span).

[0169] When the hanging basket is running, the operator should closely observe the fit between the guide wheel and the track. If any jamming or abnormal shaking is found, the machine should be stopped immediately and the limit device should be checked for displacement. Forced operation is prohibited.

[0170] When working on multiple layers simultaneously, a double-layer protective shed (upper layer for protection against smashing, lower layer for protection against dust) is installed on each working layer. The shed is constructed using a steel frame, 5mm steel plates, and a fine-mesh screen, with a coverage area extending 1.5m beyond the edge of the working surface. Vertical working intervals should be ≥ 3 layers. If staggering is not possible, an electronic monitoring system should be installed to provide real-time warnings of falling objects from above.

[0171] Construction waste management:

[0172] Standardized waste collection and treatment stations are set up on construction sites, categorizing waste into three categories: recyclables (steel scraps, plastic packaging, and waste glass), hazardous waste (waste oil, paint cans, and chemical reagent bottles), and construction waste (concrete fragments and mortar residue). Clearly marked and equipped with corresponding collection containers, recyclables are regularly collected and reused by qualified organizations. Hazardous waste is handled by professional environmental protection companies and is strictly prohibited from being mixed with regular garbage.

[0173] Waste welding rods and wires generated by welding are collected in leak-proof containers to prevent heavy metal contamination of the soil; glass scraps are packaged in scratch-resistant cloth bags and recycled and processed by glass suppliers.

[0174] Optimizing the factory prefabrication process for suspended platform components, using CNC cutting equipment to increase material utilization (≥90%) and reduce on-site processing waste. Discarded steel, such as angle steel and square tubes, is sorted by specification and used for temporary support or secondary component processing. Wooden pads and packaging materials are reused for edge protection or scaffolding.

[0175] Construction noise control:

[0176] High-frequency noise operations such as cutting and drilling are concentrated in the daytime (6:00-22:00). If continuous operations are required at night, apply for a night construction permit from the environmental protection department in advance and post a notice in the surrounding residential areas.

[0177] Operation hours are strictly controlled in accordance with the "Construction Site Environmental Noise Emission Standard" (GB 12523), with daytime noise levels ≤ 70dB and nighttime noise levels ≤ 55dB. During lunch breaks (12:00-14:00), high-noise operations such as cutting and hammering are prohibited. When necessary, low-noise tools such as rubber hammers should be used.

[0178] Dust pollution prevention and control:

[0179] Welding and Cutting Dust Prevention: Welding operations are equipped with a mobile welding fume purifier (collection efficiency ≥ 90%), while cutting operations are performed within a closed protective hood equipped with a pulse dust collector to collect metal dust in real time. Environmentally friendly silicone adhesive (low VOC content) is used during the curtain wall panel gluing process to reduce the emission of harmful gases.

[0180] Water pollution prevention and control:

[0181] Oil spill control: When changing the oil in the hoist, a leak-proof plastic sheet is laid underneath. Waste oil is collected in dedicated containers and recycled by a qualified hazardous waste disposal company. The machinery maintenance area has a hardened concrete floor and an oil collection trench, equipped with absorbent cotton and sand for emergency spill handling.

[0182] Economic benefits:

[0183] Through the innovative installation process of tilted track-mounted suspended platforms, overhead working time is reduced compared to traditional methods, improving the efficiency of key processes. For example, on the international airport project, the total construction period was shortened by 25% compared to traditional solutions, and the curtain wall construction was completed 30 days ahead of schedule.

[0184] The safety cost is greatly reduced, the precise anti-overturning design, double safety lock protection and full process monitoring achieve a safety accident rate of 0, avoiding work stoppage losses, medical compensation and reputation loss caused by safety accidents.

[0185] Social benefits:

[0186] Technological innovation and industry demonstration: The exclusive installation technology developed for complex structures such as outward-inclined cones and arc surfaces (such as inclined track-type hanging baskets and elevated standard brackets) has formed a replicable technical standard for the construction of high-rise special-shaped curtain walls, filling the technical gap in the domestic construction of complex curtain walls.

[0187] During the implementation of the method, more than 50 professional technicians who mastered high-end hanging basket operations were trained, providing high-quality talents for the industry.

[0188] Through a "three-inspection system" and comprehensive quality control throughout the entire process, the curtain wall installation achieved a 100% first-pass acceptance rate, with over 98% of key processes achieving excellent results. The project received numerous industry observation visits throughout its implementation, becoming a benchmark for high-rise, special-shaped building construction in Northeast China and enhancing the company's brand recognition and market influence.

[0189] Environmental benefits: Green construction and pollution reduction: The comprehensive utilization rate of construction waste reached 85%, scrap steel and glass scraps were 100% recycled, and hazardous waste (waste paint barrels, chemical reagents) was entrusted to professional disposal, reducing landfill volume by 30 tons. Dust emission concentration was controlled at 0.3mg / m 3 Below, lower than the national standard (0.5mg / m 3 ), the noise complaint rate dropped by 70%, achieving "zero disturbance to public" construction.

[0190] By optimizing the guide wire rope and inclined track, the ineffective running distance of the basket is reduced and the energy consumption of the equipment is further reduced by 15%.

[0191] See also Figure 9 , Figure 9 For the second phase expansion air traffic control project of the international airport using the method of this application:

[0192] Project Overview:

[0193] Project scale: The tower has 21 floors above ground and a building height of 99.9 meters. The podium has 4 floors above ground and a building height of 23.4 meters. The curtain wall is a combination of glass curtain wall and aluminum panel curtain wall, including complex shapes such as outward-inclined cones and arc surfaces.

[0194] Construction difficulties: The tower expands outward from floors 13 to 18, and traditional vertically operated hanging baskets cannot cover the construction area.

[0195] Technology Application:

[0196] Guiding system: 20# I-beam fixing rods are set on the 18th and 13th floors, φ8.3mm guide steel wire ropes (breaking strength 53.6kN) are installed, and limiting steel columns are welded at the front end to constrain the hanging basket to run along a 65° inclined track.

[0197] Docking platform: An I-beam + wooden springboard platform is set up on the 13th floor. The tension of the guide rail is offset by pulling down the steel wire rope to ensure the safe docking of the hanging basket.

[0198] Counterweight and anchoring: The counterweight is 1000kg, and a wooden pad is laid on the bottom of the rear bracket. The anti-overturning stability coefficient is 3.47, far exceeding the regulatory requirements (≥3).

[0199] Implementation effect: The construction bottleneck of the tower's layer-by-layer expansion was overcome, and the hanging basket was able to run obliquely to cover the entire working surface. The high-altitude working time was reduced by 40%, and no safety accidents or quality problems caused by the complex structure occurred.

[0200] Although the present application is disclosed as above with reference to preferred embodiments, it is not intended to limit the present application. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

[0201] Finally, it should be pointed out that the above embodiments are intended only to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they may modify the technical solutions described in the above embodiments or replace some of the technical features therein with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for installing and constructing a high-altitude, large-angle, outward-inclined special-shaped curtain wall, characterized in that: The high-altitude, large-angle, outward-inclined special-shaped curtain wall installation and construction method comprises: Using the core axis of the tower to be installed as a reference, use a total station to accurately lay out and determine the position of the suspension mechanism's fulcrum; Assembling the bracket components according to the positions of the suspension mechanism fulcrums, thereby obtaining an assembled bracket system; Perform chemical anchoring and place the embedded plate at a predetermined position on the parapet concrete structure, thereby obtaining the embedded plate after anchoring; Install the suspension mechanism on the bracket system, and connect the bracket system to the embedded plate that has been anchored, thereby obtaining the installed suspension mechanism; Installing the inclined track system on the tower to be installed; Set up a docking platform on the tower to be installed; The curtain wall keels are transported and installed through the suspension mechanism, the inclined track system and the erection of the docking platform.

2. The high-altitude, large-angle, outward-inclined special-shaped curtain wall installation and construction method according to claim 1, characterized in that: The method of using the core tube axis of the tower to be installed as a reference and using a total station to accurately lay out and determine the position of the suspension mechanism support point includes: Using the tower core axis as a reference, a total station was used to precisely locate the suspension mechanism's pivot points. During the measurement process, the distance between the front and rear pivot points was strictly controlled to 4.4m, with an allowable deviation of ≤10mm, while also ensuring that the elevation error was ≤5mm.

3. The high-altitude, large-angle, outward-inclined special-shaped curtain wall installation and construction method according to claim 2, characterized in that: The step of assembling the bracket assembly according to the position of the suspension mechanism fulcrum to obtain an assembled bracket system includes: According to the position of the front and rear fulcrums, assemble the front bracket. The front bracket is assembled with 80×80×4mm square tubes. During the installation process, it is reinforced by using double-track φ8.3mm steel wire ropes. Each track uses ≥4 rope clamps, and the rope clamp spacing is uniformly set to 150mm. Lay a 50mm thick wooden pad on the bottom of the rear support; The counterweights are fixed in series to prevent them from sliding during construction.

4. The high-altitude, large-angle, outward-inclined special-shaped curtain wall installation and construction method according to claim 3 is characterized in that: The chemical anchoring is performed to place the embedded plate at a predetermined position on the parapet concrete structure, thereby obtaining the anchored embedded plate, which includes: Place the 250×250×8mm embedded plate at the predetermined position on the parapet concrete structure; Use an electric drill to drill holes on the embedded plate and insert 4-M16×190mm chemical anchor bolts into the holes; Use a torque wrench to fix the chemical anchor bolts to the embedded plate; After the burial is completed, a pull-out test is carried out.

5. The high-altitude, large-angle, outward-inclined special-shaped curtain wall installation and construction method according to claim 4 is characterized in that: The method of installing the suspension mechanism on the support system and connecting the support system to the embedded plate after anchoring to obtain the installed suspension mechanism includes: Place the suspension mechanism on the bracket system, ensuring that the position of the suspension mechanism corresponds to the position of the embedded plate; Use connectors to firmly connect the suspension mechanism to the embedded plate; After the connection is completed, check the stability of the suspension mechanism.

6. The high-altitude, large-angle, outward-inclined special-shaped curtain wall installation and construction method according to claim 5, characterized in that: The process of installing the inclined track system on the tower to be installed comprises: Install the upper fixing point, install the I-beam across the parapet, weld the square tube at the rear end, and then fix the I-beam to the concrete at the base of the wall through the embedded plate and 2-M16 chemical anchor bolts; weld the limit steel column at the front end of the I-beam, and control the spacing error to ≤3mm; For the installation of the lower fixing point, the I-beam is installed through the floor slab and anchored with three U-bolts. The bolt spacing is 600mm, and one bolt is set at the root and the middle to ensure the reliability of the anchoring. After the anchoring is completed, the gap is filled with fireproof mortar. The two ends of the rail wire rope are fixed to the upper and lower I-beam limit columns respectively. During the tensioning process, a dynamometer is used to accurately control the tensioning force to ensure that the measured inclination angle after tensioning is 65°±2° and the tensioning force is controlled at 8~10kN.

7. The high-altitude, large-angle, outward-inclined special-shaped curtain wall installation and construction method according to claim 6, characterized in that: The step of setting up a docking platform on the tower to be installed comprises: Use I-beam cantilever and wooden planks to build the platform for the hanging basket, and lay 50mm thick wooden planks. When laying the wooden planks, the spacing should be ≤300mm to ensure the flatness and safety of the platform surface. Use steel bars to set up guardrails at the edge of the platform; Two steel cables are installed at the front end of the platform and tied downward to the preset structural beams of the tower to be installed. Each steel cable is equipped with a turnbuckle. During the installation process, the sinking amount of the front end of the platform is accurately controlled to ≤5mm by adjusting the turnbuckle, ensuring that the horizontal deviation of the platform is ≤2mm / m.

8. The high-altitude, large-angle, outward-inclined special-shaped curtain wall installation and construction method according to claim 7, characterized in that: The method of transporting and installing curtain wall keels by using the suspension mechanism, the inclined track system and the docking platform includes: The curtain wall is hoisted in sections according to the dividing lines. When the first section is hoisted, a total station measuring device is used for precise positioning to ensure that the positioning deviation is ≤3mm. During the subsequent hoisting of sections, a laser line projector is used for calibration to strictly control the height difference between adjacent sections to ≤2mm. For welding nodes, welding rods are used for welding operations. During the welding process, the weld height is strictly controlled to be ≥8mm. After welding, a thickness gauge is used to detect the thickness of the applied anti-rust paint to ensure that the thickness is ≥180μm to ensure the corrosion resistance and connection strength of the welding nodes.

9. The high-altitude, large-angle, outward-inclined special-shaped curtain wall installation and construction method according to claim 8, characterized in that: After setting up the docking platform on the tower to be installed, and before transporting and installing the curtain wall panels through the suspension mechanism, the inclined track system and the setting up of the docking platform, the high-altitude large-angle outward-inclined special-shaped curtain wall installation construction method further includes: The suspension mechanism is debugged and load tested, wherein the debugging and load testing of the suspension mechanism includes: No-load trial run: Start the hoist and control its running speed within the range of 9.5m / min±5%. During the trial run, check the triggering of the limit switch to ensure that the limit switch can be triggered in time when the platform is ≥300mm away from the track end point. At the same time, perform a performance test on the safety lock. When the basket tilts 3°, the safety lock should issue a warning signal. When it tilts 8°, the safety lock should be able to be completely locked to ensure the safety of the basket operation. Rated load test: A uniformly distributed load of 300kg is applied to the hanging basket platform to simulate actual construction conditions. After loading, the hanging basket is operated three times. During this process, testing equipment is used to check the uniformity of the force applied to the wire ropes, ensuring that the tension difference within each rope is ≤10%. Deformation of the suspension mechanism is also observed, with a deflection requirement of ≤L / 200.

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