EFFECTIVENESS OF ARCHITECTURAL CHANGESAND URBAN DESIGN OPTIONS ON THE NOISEREDUCTION IN URBAN STREETS WITHDIFFUSELY REFLECTING BOUNDARIES

摘要

A radiosity-based theoretical/computer model has been developed to predict the sound fieldsrnin urban streets with diffusely reflecting boundaries. Using the model a parametrical studyrnhas been carried out to investigate the effectiveness of architectural changes and urban designrnoptions on the noise reduction in urban streets with diffusely reflecting boundaries. Therntreatments studied include increasing boundary absorption evenly, adding absorbent patchesrnon the fa?ades or the ground, reducing building height, and arranging gaps between buildings.