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How are the standards for wind pressure resistance of architectural glass curtain walls in Foshan tempered glass factories differentiated?

Release time:

Mar 18,2025

The standards for wind pressure resistance of glass curtain walls mainly include the following aspects:

1. Performance Indicators

Deformation Limit:

Under the standard value of wind load, the deformation of the glass curtain wall should not exceed the specified value, and no damage should occur, such as cracks, panel breakage, local yielding, adhesive failure, etc.

The relative and absolute deflection of the curtain wall support system and panels should meet the requirements of relevant specifications. For example, for component-type glass curtain walls, the relative deflection of the main load-bearing members should not be greater than 1/180 of the span, and the absolute deflection should not be greater than 20 mm (30 mm when the span exceeds 4500 mm).

Wind Pressure Resistance Performance Grading:

The wind pressure resistance performance of glass curtain walls is divided into several grades, and the specific grading indicators are determined according to the standard value of wind load.

For example, according to the standard GB/T 21086-2007 for "Building Curtain Walls", the wind pressure resistance performance grading indicator P3 starts from 1.0 kPa, and each increase of 0.5 kPa is a grade, up to 5.0 kPa and above.

In actual projects, the appropriate wind pressure resistance performance grade should be determined according to factors such as the climate conditions, building height, and shape coefficient of the building location.

2. Design Calculation

Standard Value Calculation of Wind Load:

The standard value of wind load should be calculated according to the provisions of the national standard "Code for Building Structure Loads" GB 50009.

The calculation should consider factors such as ground roughness category, building height, shape coefficient, and gust factor.

Glass and Component Design:

According to the calculated standard value of wind load, design appropriate glass thickness, profile specifications, and connectors, etc.

The glass curtain wall should use safety glass, such as tempered glass and laminated glass, to improve its wind pressure resistance.

The design of components should meet the requirements of strength and stiffness to ensure that no damage occurs under wind load.

3. Inspection and Acceptance

Wind Pressure Resistance Performance Test:

After the glass curtain wall is completed, a wind pressure resistance performance test should be carried out.

During the test, the deformation and damage of the curtain wall are measured by simulating the wind load.

The test results should meet the design requirements and relevant standard provisions.

Acceptance and Evaluation:

Based on the test results, the wind pressure resistance performance of the glass curtain wall is evaluated.

If the requirements are not met, rectification or reinforcement should be carried out until the requirements are met.

4. Other Notes

Regional Differences:

For areas affected by tropical storms and typhoons, the wind pressure resistance requirements for glass curtain walls are higher.

In these areas, the wind load under extreme climate conditions should be fully considered during the design.

Non-Seismic Design:

In non-seismic design areas, the wind pressure resistance of the glass curtain wall is the main consideration.

In seismic design areas, in addition to wind load, the impact of earthquakes on the curtain wall should also be considered.

In summary, the standard for wind pressure resistance of glass curtain walls is a comprehensive requirement involving multiple aspects such as performance indicators, design calculations, and inspection and acceptance.

In actual projects, the appropriate wind pressure resistance performance grade should be determined according to the specific situation, and corresponding design and construction measures should be taken to ensure the safety and reliability of the glass curtain wall under wind load.

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