INVESTIGATION OF VIBRATIONS OF REINFORCED CONCRETE RIBBED SHELLS

The study of vibrational movements and transients in deformable shells is of great practical importance. Structures in the form of plates and shells interacting with the elastic medium are widely used in engineering and construction. The article studies the stress-strain state (SSS) of flat reinforced concrete ribbed shells under the action of short-term and long-term loads. It is assumed that the rheological properties of reinforced concrete obey the linear theory of hereditary creep. The analysis of the results of testing the strength and stability of shells, supported by ribs, and their comparison with similar results of the calculation of smooth shells, both for linear-elastic deformation and creep problems. It is shown that the study of reinforced concrete shells cannot take into account factors such as geometric nonlinearity and transverse shifts.