ISRA (India) = 4.971 ISI (Dubai, UAE) = 0.829 GIF (Australia) = 0.564 JIF = 1.500 SIS (USA) = 0.912 РИНЦ (Russia) = 0.126 ESJI (KZ) = 8.997 SJIF (Morocco) = 5.667 ICV (Poland) = 6.630 PIF (India) = 1.940 IBI (India) = 4.260 OAJI (USA) =

The results of experimental-theoretical studies of precast-monolithic reinforced concrete shells of complex geometry, assembled from enlarged elements at the assembly stage, are presented. The studies were carried out on full-scale composite shells 116 m, 96x88, 48x48 m and 18x36 m, its enlarged elements 3x18 m and 3x24 m, as well as on a shell model at a scale of 1:15, 1:10 and 1:4. The stress-strain state of composite shells was investigated for different versions of mounting and uncoiling. Recommendations are given on rational methods of erection and incineration of shells from enlarged elements for public buildings.

The dynamic parameters of long-span prestressed one and two-belt hanging roofs, for which the seismic wavelengths are commensurate with the dimensions of the structure in plan, are considered. Calculated expressions have been obtained to determine the dynamic parameters for symmetric and skew-symmetric oscillations depending on the length of seismic waves.To ensure the operational safety of unique buildings and structures, we studied the change in the structural properties of materials from unfavorable operating conditions, long-term, beyond design-basis static loads, high-intensity dynamic effects, compliance of the support contours and the possibility of local damage and from the failure of cables of the structures under study.