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Information × Registration Number 0223U002099, 0120U102065 , R & D reports Title The development of theoretical foundations and experimental verification of new effective ways to increase the bearing capacity and waterproofness of the soil of the subgrade of railways popup.stage_title Head Vatulia Glib L., Доктор технічних наук Registration Date 09-02-2023 Organization Ukrainian State University of Railway Transport popup.description2 Object of research: properties of subgrade soils and soil foundations of structures, phenomena and processes occurring under conditions of complex and long-term loads, exposure to electric currents, potentials and excess charges, aggressive environments, thermal and force effects. Subject of study: unstable soils of subgrade, ground foundations of transport and other structures. Research methods: to perform research tasks and prove scientific hypotheses, a choice of known research methods was made and original ones were developed. The study of the physical and mechanical properties of materials was carried out using standard methods, the phase composition of the cement stone and its microstructure using a complex of physical and chemical methods: optical microscopy, IR spectroscopy. The following have been proposed and implemented: an improved technology for the installation of a laying layer for a ballastless bridge deck and a technology for creating a polymer soil composite at the base of a reinforced concrete culvert by injecting a polyurethane polymer into the soil; an improved method for searching for a rational section of a structure of a steel-reinforced concrete superstructure with a reinforced concrete upper chord; a method for calculating the value of the reduced mass of a railway track (including a sleeper base) using a spatial model of dynamic deformations of a railway track based on the theory of elasticity, taking into account the boundaries of the space involved in the vibrations of each rail support at the calculated time. The following have been developed: composition of a polymer-mineral composite based on Portland cement, vinyl acetate polymer and chemical additives, rationalization algorithm for cross-sections and an algorithm for optimal design of the structural system of a steel-reinforced concrete bridge using the example of a three-span bridge structure Product Description popup.authors Aks'onova Nataliya Anatoliyivna Aloshyn Serhii Oleksandrovych Bychenok Ihor V Borziak Olha Serhiivna Vatulia Glib Leonidovych Gerasimenko Oleg Stepanovich Deryzemlia Svetlana V. Zhuravel Vitalii V Zinchenko Vladyslava V Zinchenko Oleksiy S Zvierieva Alina S. Kaliuzhna Olena Viacheslavivna Kamchatna Svetlana M Kovalev Maksim O. Krykun Oksana Petrivna Leibuk Yaroslav Serhiiovych Lobiak Oleksii V. Miroshnichenko Sergij V Novikova Mariia Andriivna Opanasenko Elena Viktorovna Orel Yevhen F. Pavliuchenkov Myhailo Vasylovych Panchenko Serhii V. Pertenko Dmytro Grygorovych Pluhin Andrii Arkadiiovich Pluhin Dmytro A. Plugin Oleksii Andriyovich Potapov Dmitry Oleksandrovych Trykoz Lyudmila V. popup.nrat_date 2023-02-09 Close