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Full-Text Articles in Engineering
Numerical Simulation Of Nonlinear Vibrations Of Discrete Mass With Harmonic Force Perturbation, M. Yusupov, B. A. Akhmedov, Olga Karpova
Numerical Simulation Of Nonlinear Vibrations Of Discrete Mass With Harmonic Force Perturbation, M. Yusupov, B. A. Akhmedov, Olga Karpova
Acta of Turin Polytechnic University in Tashkent
The problem of vibration of a single-mass system under the force excitation of vibration associated with a fixed base by a weightless nonlinear viscoelastic spring is considered. To take into account the rheological properties of the spring material, the Boltzmann-Volterra principle was used. Mathematical models of the problem under consideration are obtained, which are described by integro-differential equations. A solution method based on the use of quadrature formulas has been developed and a computer program has been compiled on its basis, the results obtained are presented in the form of graphs. The influence of nonlinear and rheological properties of a …
Investigation Of Way Embankment Stability On Movement Of High Speed Trains, Mirzakhid Khamitovich Miralimov, Shakhboz Ulugbekovich Normurodov
Investigation Of Way Embankment Stability On Movement Of High Speed Trains, Mirzakhid Khamitovich Miralimov, Shakhboz Ulugbekovich Normurodov
Journal of Tashkent Institute of Railway Engineers
In this paper is considered the problem related with a stressed state of railway embankments taking into account of dynamic loadings from high-speed trains. In the offered technical method is giving wave nature transmissions of dynamic loading from the passenger trains and their interaction of soil layers with various parameters. The design procedure gives a clear physical and mathematical pattern, where all formulas are in detail shown and simple for understanding. Calculation is conducted numerically in two stages. Considering from classical principles of structural mechanics, the first calculation stage of the railway structures includes deformation of the railway sleepers taking …
Development Of Diagram Methods In Calculations Of Reinforced Concrete Structures, Sagatov Bakhodir, Tillayev Mirjalol
Development Of Diagram Methods In Calculations Of Reinforced Concrete Structures, Sagatov Bakhodir, Tillayev Mirjalol
Problems of Architecture and Construction
The paper gives short analysis of the practical use of strain diagrams in design of reinforced concrete structures. Basic principles to obtain experimental diagrams under simple static, regime and dynamic loading are given along with the conditions they have to meet. Further developments of the diagram methods of design are noted.
To Analysis Of The Stressed Condition And Long Durability Of Cylindrical And Conic Pipes Of Polymeric Materials, A. Abdusattarov, F.E. Abduqodirov, D.N. Shamsiyev
To Analysis Of The Stressed Condition And Long Durability Of Cylindrical And Conic Pipes Of Polymeric Materials, A. Abdusattarov, F.E. Abduqodirov, D.N. Shamsiyev
Journal of Tashkent Institute of Railway Engineers
The article considers the solution of the problem of long-term strength and damage of a conical pipe and a hollow cylinder bonded to a thin-walled shell under the action of internal pressure, taking into account the influence of visco-elastic properties of the material on the stress-strain state
Gis-Based Approach For Sinkhole Occurrence Risk Mitigation In Urban Areas For Historic Wieliczka Salt Mine, Agnieszka Malinowska, Ryszard Hejmanowski
Gis-Based Approach For Sinkhole Occurrence Risk Mitigation In Urban Areas For Historic Wieliczka Salt Mine, Agnieszka Malinowska, Ryszard Hejmanowski
Gorniy vestnik Uzbekistana
The article presents the results of the definition of a new methodology for assessing the risk of flooding a shallow slotted mine, which was carried out on the square above the Wieliczka Salt Mine, which is a world heritage. Vertical stresses are estimated on the basis of the theoretical state of rock mass deformation in the area of test chambers. In addition, the risk for chambers indicated in the zone was calculated based on the theory of arctic pressure. The final stage of the study was spatial analysis, which led to the identification of chambers, potentially subject to the influence …
Strength Of Reinforced Concrete Beams Hardenedwith High-Strength Polymers, N Asatov, U. Jurayev, B. Sagatov
Strength Of Reinforced Concrete Beams Hardenedwith High-Strength Polymers, N Asatov, U. Jurayev, B. Sagatov
Problems of Architecture and Construction
The article reflects the methodology, results and features of the studies conducted to assess the strength of rectangular reinforced concrete beams in transverse bending. The technique of using high-strength polymer composites to reinforce reinforced concrete elements is shown. The characteristics of the tested samples, testing methods, the effect of the main factors affecting the strength of the beams are also discussed.