Issues of further development and improvement of design standards for wood structures

Abstract

The current state of design of wooden structures against the background of the historical development of design standards is analyzed, the tasks of their further development are formulated. The strength criteria ensuring progress in the design of unique and spatial wooden structures are considered. Examples of unique large-span coatings, principles of their design with providing a spatial scheme are presented. In addition, the methodology for the nonlinear analysis of such systems with due regard for the duration of action of the load and of redistribution of internal stresses, especially under unsymmetrical loads, including with due regard for the coverings between the ribs experiencing a complex stress state is proposed. The application of the calculation method considered provides material savings and at the same time increases the reliability and survivability of the structure. Some possible additions and proposals on the structure and content of the new version of the norms are proposed. Taking into account continuity and achievements of the technical progress the necessity of development of new standards on the basis of advanced technologies of production, design and calculation of designs on the computer is proved.