In coastal areas where typhoons frequently occur, the wind pressure resistance of doors and windows is directly related to building safety and living experience. This article simulates the extreme test of a level 8 typhoon (wind speed of about 20.8-24.4m/s), combined with the key design and measured data of aluminum alloy doors and windows, to analyze how they can hold the line in the storm.
1. Test background and standards
According to the national standard "Standard for Aluminum Alloy Windows for Buildings" (GB/T8478-2017), the wind pressure corresponding to a level 8 typhoon is about 600-800Pa. In the experiment, a wind pressure tester was used to gradually pressurize to the equivalent wind pressure value to observe the deformation, sealing and structural stability of doors and windows. The test process includes initial state recording → gradual pressurization → limit pressure → damage analysis to ensure that the data meets the engineering safety requirements.
2. Materials and Structure: Core Support for Wind Pressure Resistance 5. Conclusion: Safety is a calculation problem, but also a detail problem
High-strength Profiles
The experiment uses 6063-T6 aluminum alloy profiles, which have a tensile strength of ≥160MPa, a wall thickness of ≥1.4mm, and a Webster hardness of ＞8HW, ensuring that the frame is not easily deformed under wind pressure. For example, Meishino doors and windows use a multi-cavity structure design and combine four load-bearing reinforcement ribs to significantly improve the overall rigidity.
Glass and Sealing System
Xinyi tempered glass (thickness ≥5mm) is used, and seamless sealing is achieved through EPDM sealing strips. Tests show that this type of combination can complete drainage within 0.3 seconds under the impact of simulated heavy rain, and there is no leakage.
3. Design Optimization: Details Determine Success or Failure
Middle-mud reinforcement design: Window sashes with a width of more than 1.8m need to be equipped with a reinforced middle mullion, which is fixed with connectors instead of screws to avoid fracture caused by stress concentration.
Multi-cavity structure: Through geometric optimization (such as the golden ratio of wave crest height and wave distance 1:3), the wind pressure is dispersed to the surrounding fixed points, and the deformation rate is reduced by 40%.
Installation process: The anchors are made of highly durable materials, combined with standardized installation procedures to ensure that the window frame and the wall are firmly connected.
4. Actual performance: Data verification of safety threshold
In the 8-level typhoon simulation test, the ultimate pressure-bearing value of qualified doors and windows reached 900Pa (exceeding the national standard A-level standard), the deflection of the main components was
The wind pressure resistance of aluminum alloy doors and windows requires comprehensive material strength, structural design and installation technology. Through scientific testing and standard implementation, modern doors and windows can calmly cope with the challenges of 8-level or even higher wind pressure. When choosing, it is recommended to pay attention to the tensile strength, salt spray test duration (≥240 hours) and products that meet the regional wind pressure level to build a solid line of defense for building safety.
