Wind Tunnel Study of Peak Wind Force Coefficients for Designing Cladding/Components of Gable-Roofed Open-Type Structures

抄録

The present paper discusses the peak wind force coefficients for designing the claddings and its immediately supporting structures of open type membrane structures based on a wind tunnel experiment. Three types of gable-end configurations, i.e. enclosed, open and partially-enclosed (semi-open) types are tested. The wind tunnel experiment is carried out in two kinds of turbulent boundary layers corresponding to open-country and urban terrains. The wind pressures are measured simultaneously at many points both on the external and internal surfaces. First, the distributions of mean wind force coefficients are investigated to understand the characteristics of the wind forces, focusing on the effects of gable wall configuration. Then, the maximum and minimum peak wind force coefficients irrespective of wind direction are examined. Furthermore, the characteristics of internal pressures on open and semi-open type structures are investigated. Based on the results, an estimation method for evaluating the peak wind force coefficients for open and semi-open type structures is proposed.