Study on the Wind Impact on Temporary Structures Considering the Barriers That Arise When Changing Different Parameters of Structures in a Three-Dimensional Setting

The article is devoted to a numerical study of wind impact on temporary structures in the presence and absence of airstreams from neighboring objects when their dimensions change. Barriers with a simple geometric shape are located at certain distances from temporary structures. Effects on wind flow structures, modeled with the help of modern ANSYS software complex, were analyzed on the example of a real object from light construction structures, which is a «tent with double-slope coating». According to the results of numerical modeling, the presence of neighboring objects in the wind path, as well as their shape transformation by reducing or increasing geometric dimensions, changes the flow pattern of the investigated temporary structure and thus leads to a redistribution of aerodynamic coefficients over the surface. This influence is not taken into account in domestic (SP 20.13330.2016) and foreign (EN 1991-1-4) standards, which makes it difficult to determine the most accurate adverse wind load not only for temporary structures but also for capital ones. These regulations only consider different densities around a building under construction. Therefore, the wind load on structures needs to be clarified considering barriers.