Installation technology of complex irregular eaves aluminum panel curtain wall

Views:178 Author:Site Editor Publish Time:2025-06-03 11:18:17 Orgin:Site

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1、Construction process flow

Construction preparation → pre embedding of embedded parts → construction of hanging basket and attached frame → installation of steel dragon skeleton → reverse design of aluminum plate dimensions → lifting and temporary fixation of aluminum plate → connection between aluminum plate and mesh shell nodes → optimization of drainage system → waterproofing and rust prevention treatment of aluminum plate → water spraying test → dismantling of hanging basket.

2、Operation points

(1)Pre embedding of embedded parts

The outermost beam of the building is made of steel reinforced concrete beams, and the steel dragon skeleton is fixed on the steel reinforced concrete beams. Before pouring the concrete, the installation position of the embedded parts is determined, and the embedded components of the dragon skeleton are fixed to the steel frame by bolts and welding according to the design requirements. Then, the hoop reinforcement is tied and the concrete is poured until the concrete strength meets the standard. It is ensured that after the beam is formed, the embedded parts are tightly connected to the beam.

▲Pre embedding of keel embedded parts

▲Pre embedded parts processing

(2)Construction of homework platform track

Based on the actual situation of the project, the floor height of the construction operation, and the environment where the track at the bottom of the work platform is located, the corresponding track connection form shall be formulated. Because simple tracks must be simple and materials can be easily found or replaced with existing steel materials on site, the form and fixing method of the track must be scientific, safe, concise, and practical. When moving the platform car, loosen the top screw and push the platform car along the I-beam track. When it needs to be fixed, tighten the fixing screw to lock the anti overturning wheel rolling along the I-beam wing plate and fix the car.

▲Rail platform car

(3)Precautions for Mechanical Processing of Parts in Platform Vehicle Systems

All components of this platform's vehicle system are made of customized steel parts, which are all mechanically and manually manufactured. Bearings, shaft sleeves, rollers, etc. require mechanical cutting and polishing processing. Therefore, high-quality carbon structural steel of grade 45 is selected for easier cutting and processing, while also ensuring mechanical performance.

▲Fixed measures for track platform cars

(4)Production and installation of steel dragon skeleton

Using computer-aided design (BII) technology, the length dimensions of each keel at different positions are accurately designed according to design requirements. After the keel is formed, the steel needs to be hot-dip galvanized. Galvanizing is a treatment method of coating the surface of steel with a zinc layer. In this process, the steel is immersed in a molten liquid containing zinc, forming a zinc protective film to prevent oxidation and corrosion. Hot dip galvanizing is suitable for environments that require stronger corrosion resistance. Process and number all the keels in the factory before transporting them to the construction site. Each keel and connecting node is lifted to the corresponding position in the air by a crane, and the keel frame is installed by workers in a hanging basket. After installation, inspect the overall steel dragon skeleton, adjust the bone adjustment device to ensure that the distance and angle meet the design requirements, and fix the nodes after positioning. Finally, check all connection points to ensure that the fasteners are secure.

▲Installation of Steel Dragon Skeleton

（5）Reverse design of aluminum plate dimensions

Three dimensional laser scanning technology is used on the construction site to measure the dimensions of the constructed dragon skeleton, and the accurate dimensions and shapes of each aluminum plate unit corresponding to the dragon skeleton are calculated and designed. When implementing 3D laser scanning on the construction site, it is necessary to ensure that the construction site is relatively clear and free of obstacles, so that the laser scanning equipment can capture the target completely. Install laser scanning equipment in the appropriate position to ensure that it can comprehensively scan the target area. The data generated by the scanner is usually point cloud data, which needs to be processed by professional software to generate accurate 3D models. Integrate the 3D model into the Building Information Modeling (BII) design software for subsequent processing of aluminum panels.

(6)Precision machining of irregular aluminum plates

Design of irregular aluminum plates using computer-aided design (BIM) and computer-aided manufacturing (CAM) technologies. BIM software is used to design accurate drawings of irregular aluminum plates, while CAI software converts the design into instructions that can be understood by CNC machine tools. Use a Computer Mumerica1 Contro1 (CNC) machine tool to process and preload the aluminum plate into the designed shape. CNC technology can provide a high degree of automation and precision, automatically operating according to predetermined design graphics and specifications. Ensure that the aluminum plates used meet the design requirements and have no obvious defects on the surface that can affect the appearance and quality of the final product. Implement strict process control during processing, including appropriate cutting speed. Control of parameters such as feed rate and cutting depth. This helps prevent excessive or insufficient cutting, ensuring the accuracy of machining. After cutting and shaping, use measuring tools such as coordinate measuring machines to ensure that the size and shape of the product meet the design requirements. After the acceptance is completed, the aluminum plate surface is treated with powder coating for corrosion prevention and beautification. Powder coating is a process of electrostatically spraying powder coating onto the aluminum surface, and then curing at high temperature to form a coating. Powder coatings typically have strong weather resistance and corrosion resistance, making them suitable for outdoor environments. It can also provide a variety of color and surface effect options. Finally, number the different aluminum plates according to their installation positions and installation sequences.

(7)Lifting and temporary fixation of aluminum plates

Transport the aluminum plates processed by the factory to the site, and use a crane to hang the aluminum plates to the predetermined lifting points according to the design requirements based on the numbers. Once the aluminum plate is suspended in the correct position, workers use temporary supports, slings, lifting frames, and other equipment in the basket to stabilize the aluminum plate at the suspension point for temporary fixation, preventing it from moving or tilting during subsequent construction.

▲Aluminum plate hoisting

(7)Connection between aluminum plate and mesh shell nodes

Weld L-shaped aluminum corner brackets at the corresponding positions on the keel in advance, reserve anchoring holes at the corresponding positions on the aluminum plate, and after the aluminum plate is temporarily fixed in place, workers fix the aluminum plate to the L-shaped aluminum corner brackets with fasteners in the air. Ultimately, ensure that each unit aluminum plate is fixed in the corresponding position on the keel frame.

▲Aluminum panel curtain wall installation

▲Installation of roof aluminum panels

(9)Optimization of drainage system for curtain wall structure

Pre design the size of the drainage channel, and the width and depth of the drainage channel need to be determined according to the design of the building and the amount of rainwater. The width of the groove should be sufficient to accommodate the expected rainwater flow, while the depth of the groove should consider the stability of the water flow and the height of the mouth. The drainage channel is made of stainless steel material, which helps prevent corrosion and damage to the channel. At the bottom of the mouth, a stainless steel drainage groove is welded along the direction of the mouth aluminum plate, while ensuring that the drainage groove has a slope of 0.5% to 1% per meter, so that rainwater can quickly flow into the drainage groove. Use sealant to waterproof the connection between the drainage channel and the eaves aluminum curtain wall, ensuring that the gap between the channel and the building structure is sealed. Set maintenance holes at low points or appropriate locations in the drainage channel for cleaning and maintenance when needed. Finally, connect the drainage channel to the overall drainage system of the building to ensure that the discharged rainwater can smoothly enter the rainwater drainage system.

(10)铝板幕墙的防水与防锈处理Waterproof and Rust Prevention Treatment of Aluminum Curtain Wall

。After the installation and fixation of the aluminum plate is completed, waterproof tape, glue injection, and high-quality sealing strips should be used at the joint gaps of the aluminum plate. First, stick waterproof tape at the bottom of the seam as the first layer of waterproof structure; Then, the aluminum panel joints are treated with adhesive injection, and waterproof glue is poured into the gaps to form a continuous waterproof barrier, which is the second layer of waterproof structure; Finally, high-quality sealing strips are arranged on the surface of the joint, which are made of rubber material and can maintain elasticity under different temperature and weather conditions, ensuring the sealing of the gap and serving as the third layer waterproof structure. It is also necessary to design a slope at the joint of the aluminum plate to allow water to flow smoothly downstream and prevent water from accumulating at the joint. After the installation and overlapping of the curtain wall body, all exposed parts of the aluminum panel wall shall be sandblasted for rust prevention. Sandblasting treatment of aluminum surface can form microscopic concave convex structures on the surface, increase surface area, and improve the effect of anodizing. Anodizing is a method of generating a protective film through electrolysis, which can enhance the corrosion resistance of aluminum.

▲Waterproof treatment of aluminum panel curtain wall

(11)Curtain wall water spraying test

Ensure that the installation of the curtain wall system has been completed, including all sealing and connecting parts, and confirm that all curtain wall components and materials have been installed in accordance with the design specifications. Block non testing areas to ensure specificity of testing, which typically includes blocking all openings, ventilation holes, doors, windows, and other non testing areas. Start the water spraying test equipment to spray the water onto the surface of the curtain wall at the design standard pressure and method. Ensure that the water flow covers the entire testing area, including possible sealing joints and connections. During the testing process, observe the waterproof performance of various parts of the curtain wall system. Pay special attention to possible leakage points, such as seams, corners, openings, etc. Meanwhile, record any abnormal phenomena during the testing period. Stop watering the testing equipment after the testing time has ended. Check the waterproof performance of the curtain wall system and record any issues found. Write a water spray test report, detailing the testing conditions, identified issues, problem-solving methods, and evaluation of the waterproof performance of the system. The report usually needs to be submitted to relevant regulatory agencies or construction parties.