Trends in the development of wind load codes For building structures

Abstract

Ensuring the reliability and safety of buildings and structures depends to a large extent on the correct understanding of the nature, quantitative description and normalization of loads on building structures, including wind loads. These loads have a rather complex physical nature and changeable nature, which require knowledge of thermodynamic processes in the atmosphere, physical properties of wind effects, methods of meteorological observations and climatological description of the area, variability of wind loads, nature of wind blowing of structures and buildings. Such features are to a certain extent reflected in the sections of the codes for the design of building structures containing wind load codes. Most of the parameters of the wind load codes are probabilistic in nature and require the application of statistical methods for their justification. These methods were constantly changing and developing along with the regular revision of building design codes. Therefore, the analysis of the evolution of domestic wind load codes together with their statistical substantiation is an urgent task. Materials devoted to wind loads have been published in various scientific and technical journals, collections of articles, and conference materials. The article contains a systematic review of design codes and publications on the problem of wind load over a 90-year period from the 1930s to the present. The main attention is paid to the analysis of trends in the development of codes for the design of structures in terms of changes in calculation coefficients, the assignment of normative and calculation values ​​of wind load and the involvement of experimental statistical data. The high scientific level of domestic codes DBN B.1.2-2006 "Loads and loadings", which have a modern probabilistic basis and are associated with Eurocode codes, is noted. Scientific results are highlighted that can be included in the following wind load codes.