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超高层建筑如何抵御强风？玻璃幕墙的结构设计揭秘！

Release time:

Feb 14,2025

When facing the challenge of strong winds, super tall buildings need to adopt a series of effective structural and design measures to ensure their stability. Among them, the glass curtain wall, as the enclosure structure of super tall buildings, plays a crucial role in resisting strong winds. The following is a detailed analysis of how super tall buildings resist strong winds and the structural design of glass curtain walls.

1. Main measures for super tall buildings to resist strong winds

Optimize building design:

Using a streamlined conical design helps the wind flow smoothly, reducing air separation and turbulence, thereby lowering the impact of wind pressure.

By precise calculations and simulations, optimize the shape and size of the building to reduce wind resistance and the impact of wind forces on the building.

Use wind dampers:

Wind dampers are devices that can absorb and dissipate wind energy, counteracting the swaying of the building in the wind through their movement.

For example, the "Eye of Wisdom" damper installed at the top of the Shanghai Tower, weighing thousands of tons, can generate opposite movements under strong winds through computer control to counteract the building's sway, ensuring safety.

Strengthen structural support:

Using a composite structure of a reinforced concrete core tube and a steel structure outer frame enhances the overall lateral and torsional stiffness of the structure.

By setting up giant columns, truss steel supports, and other combined components, the stability and load-bearing capacity of the building are enhanced.

2. Revealing the structural design of glass curtain walls

Selection of panel materials:

Glass curtain walls typically use high-performance glass materials, such as ultra-white glass and LOW-E glass, which not only have good light transmission and excellent thermal insulation and soundproofing properties but also possess good wind pressure resistance and UV resistance.

Design of structural forms:

The structural forms of glass curtain walls are diverse, including frame-type and point-supported types. These structural forms achieve a close connection and effective support between the curtain wall and the main structure through scientifically reasonable layouts and meticulous construction techniques.

Frame-type curtain walls fix glass panels together through a metal frame, forming an integral structure. Point-supported curtain walls support glass panels on the main structure through metal supports and connectors, offering better transparency and flexibility.

Consideration of displacement capacity:

The curtain wall has a certain displacement capacity relative to the main structure, which helps reduce the stress on the curtain wall under strong winds.

Through reasonable design, the curtain wall can withstand a certain amount of displacement, thus maintaining its integrity and stability.

Enhancement of wind pressure resistance performance:

During the design process of the curtain wall, strict calculations and tests for wind pressure resistance performance are conducted.

By increasing the thickness of the curtain wall, using stronger connectors and support structures, etc., the wind pressure resistance performance of the curtain wall is enhanced.

Maintenance and upkeep:

Regularly inspect and maintain the glass curtain wall to promptly identify and address potential safety hazards.

Clean the surface of the curtain wall to maintain its good light transmission and aesthetic appearance.

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3. Practical case

Taking the Kingdom Tower in Jeddah, Saudi Arabia as an example, this building reaches a height of 1007 meters, making it one of the tallest buildings in the world. Its curtain wall features a semi-hidden frame structure, with glass consisting of 10mm + 16mm air layer + 10mm hollow.

The design of the curtain wall fully considers the extreme weather conditions such as strong winds and sandstorms that frequently occur in Saudi Arabia, using high-performance glass materials and advanced structural design techniques to ensure the stability and safety of the curtain wall.

In summary, super tall buildings need to adopt various measures to resist strong winds, among which the structural design of glass curtain walls is a crucial part.

By optimizing building design, using wind dampers, strengthening structural support, and scientifically designing glass curtain walls, the wind resistance performance of super tall buildings can be effectively improved, ensuring their stability and safety.

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