This work is carried out as part of the study of the frame-rod structure with elements of thin-walled profiles. The results of a numerical study of a three-bolt connection of a thin-walled galvanized plate 1.5 mm thick with a plate of 3 mm thick on adjustable voltage bolts are presented. The calculation models are created by volume elements in Ansys software taking into account the strength properties of materials.

Keywords: galvanized thin-walled profiles, bolted joints, rod structures, thin-walled profiles, finite element method

Discusses the results of experimental rimentale-theoretical research of the building frame based on the tone-kostenich cold-formed profiles. In the course of research, the stress-strain state of the RA-we from thin-walled profiles was studied; the method of preliminary modeling of structural elements using FEM was developed; the design of the test bench and the composition of the test program of frames from thin-boned steel pro-files was developed; the comparison of the results of theoretical and experimental studies; the completion of numerical calculations of the con-struction nodes; the features of work under load and its compliance with the applied design scheme are studied.

Keywords: thin-Walled profile, construction Tests, finite element Method, Test bench

Discusses the research in the field of design of frame structures, the cross-trusses of thin-walled beams , preliminary finite element analysis of a thin-walled profile model with shelves of a bulk shaped element. Achievement in the analysis model, the corresponding test purposes.Determination of measurement error and results obtained in the calculation.Adjustment of the model.In this work, according to the results of the calculation, the mounting points of the strain gauge are taken close to the shaped element. Restrictions of displacements were introduced into the computational model for leveling the difference between the calculations and the experimental results. The results of the study profiles.

Keywords: method finite elements, thin-walled profile, core structures

This article presents the rationale for the selection of measuring instruments (strain gauges) for testing light steel thin-walled structures (LSTC) to determine the stress-strain state. Article discrebes in detail optimal sensor's installation locations, the required measures for correct value.

Keywords: thin-walled profile, test, frame, strain gauge, compression, tension, tension, bending, loss of stability