About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Vitaly I. Kolchunov, Academician of RAACS, Doctor of Technical Sciences, Professor, National Research Moscow State University of Civil Engineering, Moscow, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0001-5290-3429 Sergey Yu. Savin, Candidate of Technical Sciences, Associate Professor, National Research Moscow State University of Civil Engineering, Moscow, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0002-6697-3388 Pavel A. Kaydas, National Research Moscow State University of Civil Engineering, Moscow, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID ID: 0000-0002-7169-2652 |
| Title of the article | Deformation of precast monolithic reinforced concrete elements of frames in a special design situation |
| Abstract. | Precast monolithic structural systems have higher resistance to accidental impacts than purely precast solutions. The deformation and force distribution in such structures is specific due to the concentrated shears at the contact joint of the precast and monolithic part of the section. However, the issues of taking into account the influence of the contact joints of the composite section on the deformation of structures in limit states as a result of realisation of a special design situation remain poorly investigated. The aim of the study was to investigate the influence of structural features of precast monolithic reinforced concrete multi-storey building frames on their deformation in the limit states caused by emergency impacts. The objectives of the study were to develop a methodology for numerical modelling of precast monolithic reinforced concrete structures under emergency conditions; to determine the stress-strain state of the elements of such frames in a special design situation using the proposed methodology; to compare the obtained results with the data of experimental studies; to assess the dynamic overloading of precast monolithic frame structures in a special design situation. Results. A numerical modelling technique is proposed and verified on the background of experimental data, which makes it possible to take into account the deformability of composite section elements at the formation of normal and longitudinal cracks in them along the contact joint. The results of the parametric study of the influence of the structural features of the contact joint are presented: the ratio of the strength of concrete of the precast and monolithic part of the section, the pitch of the transverse reinforcement bars, on the deformability of the frame elements and energy dissipation. Conclusions. It is shown that as the load increases from 0.2 to 0.6 of the operational load, the value of dynamic overloading decreases on average from 1.8 to 1.6. |
| Keywords. | reinforced concrete, precast-monolithic frame, contact joint, special design situation, energy balance |
| For citations: | Kolchunov V.I., Savin S.Yu., Kaydas P.A. Deformation of precast monolithic reinforced concrete elements of frames in a special design situation // News of KSUAE, 2025, № 2(72), p. 65-76, DOI: 10.48612/NewsKSUAE/72.6, EDN: |
