Study on wind environment assessment criterion considering the influence of turbulence

Abstract

Turbulence affects the human sensation of wind, the wind-induced damage to buildings. The statistical values of winds measured by 3-cup anemometers are also affected by the turbulence. For this reason, it is important to study the influence of turbulence on the wind environment assessment criterion proposed by Wind Engineering Institute Co., Ltd. several decades ago, which was based on the mean wind speeds measured by 3-cup anemometers. The present paper discusses the influences of turbulence on the criterion using the results of field observation, a wind tunnel experiment, and a questionnaire survey about the human sensation of wind that was given to the residents and pedestrians in Tokyo. Based on the results, we have proposed a new criterion for evaluating the pedestrian-level wind environment, in which the influence of turbulence is considered.