A Wind Load Distribution Approach for Tall Buildings Based on High Frequency Force Balance Measurements
摘要
The high frequency force balance (HFFB) techniqueWind load distribution isTall building commonly used to measure the base moments, forces and torsion of tall buildingsTall building. Using this wind tunnelWind tunnel technique, it is not possible to directly obtain the distribution of varying fluctuating wind loadsWind loads along the height of tall buildingsTall building. Several researchers have developed different approaches to predict the wind load distributionWind load distribution based on HFFB results. However, most of the existing approaches are focused on estimating the generalised wind loadsWind loads and dynamic wind loadsWind loads. Also, they are generally complex and not particularly practical for wind and structural engineers. In this research, a direct HFFB-based wind load distributionWind load distribution approach is presented in the time domain for tall buildingsTall building. A 1:300 scale rigid model of an IAWE benchmark tall buildingTall building, was chosen as the subject for the HFFB-based wind load distributionWind load distribution approach study. A pressure-tapped model of the same building was used in separate wind tunnel testsWind tunnel test to obtain surface pressure distributions to validate the HFFB estimations. The results show that the proposed HFFB approach predicts the vertical distributions of the wind forces with acceptable accuracy for carrying out the concept stage of tall buildingTall building design.