BEARING CAPACITY CALCULATION OF REINFORCED CONCRETE CRANE BEAMS UNDER BIAXIAL BENDING
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2018, Vol 175, Issue 9
Abstract
The method of calculating the bearing capacity in the normal section of biaxial bended reinforced concrete T-section crane beams is developed. The problem of difficulty applying the deformation model in the study of biaxial deformed elements is successfully solved by the introduction of the rectangular stress distribution in a concrete compressed area and deformative criterion of strength. Analytical formulas are derived for the determination of all unknown parameters when calculating for biaxial bending: the neutral axis depth, the angle of inclination of the neutral axis, and the internal bending moment. The method is proposed for calculating beams with a trapezoidal shape of the concrete compressed area, taking into account all provisions of the effective normative documents and, unlike the existing ones, allows performing calculations without the use of numerical methods. The developed method of calculating provides the necessary accuracy of the calculations and can be implemented in the form of an engineering algorithm.
Authors and Affiliations
Olha Harkava, Bogdan Barilyak
MODEL OF THE TRACTION ASYNCHRONOUS ELECTRIC DRIVE IN THE MODE ELECTRODYNAMIC BRAKING WITH A SCALAR CONTROL SYSTEM
This article is devoted to the problem of traction asynchronous electric drive operation in normal and abnormal conditions in the mode of electrodynamic braking. The proposed simulation model allows us to study the dynam...
INSPECTION OF MODERN BUILT-IN DEVICES FOR CONTROL AXLEBOX UNIT OF PASSENGER WAGONS FOR HIGH-SPEED TRAFFIC
The article defines the criteria for which it is necessary to evaluate and select the built-in monitoring tools. The review of modern built-in devices for monitoring the technical condition of the passenger compartment o...
THE INFLUENCE OF MULTICOMPONENT ADDITIVES ON EFFECTIVE VISCOSITY OF THE MECHANICALLY ACTIVATED CEMENT SUSPENSIONS
The questions of influence of prescription factors (microsilica, superplasticizer Super PK, polypropylene fiber) on changing of effective viscosity mechanical activated cement containing suspensions that are using in tec...
INCREASING THE QUALITY OF SERVICE OF PARTICIPANTS FOR THE ACCOUNT OF IMPLEMENTING A SPEED MOTION AT THE RAILWAY DIRECTION
In article questions of improvement of quality of service of passengers due to introduction of the high-speed movement on the railway direction Konstantinovka - Odessa are considered. Options of rationalization of travel...
MATHEMATICAL MODEL OF INTERACTION OF WAY AND MOBILE COMPOSITION IN AREA OF RAIL JOINTS
A mathematical model characterizing work of rails under action of the vertical loading from mobile composition on the areas of way direct and crooked is developed, and also on the areas of the found in an area rail joint...