How to Design the Wind Load Resistance of UHPC Curtain Walls?

UHPC curtain wall wind load resistance design requires the comprehensive integration of three key elements: material strength, connection joints, and support systems. Through project practice in typhoon-prone regions, Qinglong Group has developed a complete wind load calculation and verification system.

Wind tunnel testing is the foundation of wind resistance design. Every major project involves creating 1:50 scale models for wind pressure testing. The Hainan Changying Universal 100 project used this method to identify a negative wind pressure coefficient of 3.5 at corner areas. These data are directly applied to panel thickness and stiffening rib design to ensure safety performance under maximum wind pressure.

The dynamic performance of connection joints is particularly critical. The elastic hanger system developed by Qinglong withstood a Force 12 typhoon in the Shenzhen Yirui Biotechnology Building project. This system allows panels to undergo slight displacement under wind pressure, dissipating energy through friction damping. Test data show that this design can reduce wind-induced vibration response by 40%.

To address wind-induced vibration in super high-rise buildings, we developed a Tuned Mass Damper (TMD) integration solution. At the 198-meter-high section of the Shanghai Qingpu R&D Center, damping devices were pre-embedded inside the UHPC panels, effectively suppressing vortex-induced vibration. This innovation improved the building's comfort level under strong winds by 2 grades.

The wind load resistance database established by Qinglong is providing valuable reference for the industry. Wind pressure data from 100 projects across 30 cities nationwide have been collected to form recommended design parameters for different climate zones. For example, the basic wind pressure in coastal areas is taken as 0.75kN/㎡, while inland cities can appropriately reduce this to 0.45kN/㎡.