WIND TUNNEL EXPERIMENTS ON WIND LOAD ACTING ON THE ROOF SURFACE OF LOW-RISE BUILDINGS LOCATED AROUND A HIGH-RISE BUILDING

Abstract

Most previous studies have clarified the interference effects between only two or three buildings, and very few have assessed the effects of a high-rise building within an urban district on its surrounding buildings. In our previous studies, wind tunnel experiments were conducted to analyze the effect of a high-rise building on the wind pressure acting on surrounding low-rise buildings, and it was found that a large negative pressure is generated locally on the roof of a low-rise building located immediately leeward side of the high-rise building. However, there has been no discussion regarding the degree to which exterior material damages can occur under strong wind conditions, and the risk of structural damage has not been shown. This study analyzed the properties of negative peak wind pressure and wind loads acting on the roof surface of low-rise buildings located near a high-rise building. The analysis is based on wind tunnel experiment results with various densities of low-rise buildings and various shapes of a high-rise building. Then, the risk of structural damage based on wind loads acting on the roof surface of the low-rise building was evaluated by comparing them with the bearing capacity of the metal roof.