Structural solutions and work under load of free-standing blocks of steel clamp scaffolds.

The paper provides a detailed analysis of the work under load structures of clamp scaffolds and systematizes the features of considering loads and impacts when performing strength calculations. The article analyzes the stress-strain state of free-standing forests. An algorithm for calculating free-standing forests is proposed, considering the features of structural schemes of blocks that are not specified in the normative literature. Based on the results of the analysis of data from a series of numerical experiments, constructive measures are proposed to ensure the load-bearing capacity, rigidity and stability against overturning of spatial blocks of free-standing forests, which will allow installing blocks with a height-to-size ratio exceeding 3,5:1 in open areas (outside buildings and structures) without attachment to existing structures. Considering the eccentric connection of scaffolding elements leads to a complex deformation of columns (oblique eccentric compression), i.e. to increase in the resulting bending moments up to 100%. Using of diaphragms in the design of free-standing clamp scaffolds blocks reduces the displacements of the block nodes by up to 16% in comparison with blocks without a diaphragm Another feature of scaffolds is that they are used for not only classic buildings and structures and for the maintenance and repair of various space stations and aircrafts. [ABSTRACT FROM AUTHOR]