周围建筑物对龙卷风导致的底层建筑物风载荷的影响
Low-rise buildings located in the urban areas are generally surrounded by buildings of similarsize. The interference of surrounding buildings has been found to be significant on wind loads instraight-line winds. In this study, systematic experiments of tornado-induced wind loads and flowpatterns around a typical low-rise gable-roof building with different layouts of surroundingbuildings were carried out in a laboratory. Effects of spacing, height ratios of the surroundingbuildings to the test building and specific building orientations were considered. The resultsindicate that the reduction of the horizontal load is caused by sheltering effect from thesurrounding buildings. The uplift load, however, could increase or decrease dependent onbuilding orientation, layout and the type of the surrounding buildings. The complicated flowpatterns around the test building are discussed and correlated to the wind loads. This studywould improve the understanding of tornado-induced loads on a low-rise gable-roof building