Modeling the operation of structures made of dispersed-reinforced concrete with an alternating dynamic load of high intensity

Epifanov

Asminin

et al. 2022

The article analyzes fires in the Russian Federation, which are a complex physical phenomenon in conjunction with the physical features of the objects under consideration, on which the fire occurred. From the point of view of solving an engineering problem, a possible variant of the development of fires in a shopping and entertainment center is considered. It has been established that, despite a significant difference in the quantitative ratio, fires at objects with a massive stay of people, in comparison with fires at other objects, simultaneously affect a larger number of people, as a result of which they can have much more tragic consequences. As a result of the analysis carried out on the study of objects with a massive stay of people, in our case, at the proposed object of extinguishing a fire and carrying out emergency rescue operations, it can be noted that at the time of the fire there were quite a lot of people at the protection object. In this paper, when calculating the provision of resources for fire departments when extinguishing a fire using the example of the object under study, a mathematical model is proposed related to the structural model, where the object is represented as a system with its device and functioning mechanism. A scheme has been developed for the alignment of forces and means at the time of localization of the fire in accordance with the chosen scenario for the development of the fire. Modeling of a possible situation in case of fire was carried out on the example of the Passage shopping and entertainment center in Voronezh.

Simulation of a possible situation in case of fire at facilities with a massive presence of people

Epifanov

Asminin

et al. 2022

Mathematical model and methodology for providing resources to fire departments in case of fire in a shopping and entertainment center

Zyazina

Osipov

2022

The problem of ensuring safety in case of fire of large objects is considered as a problem of engineering-oriented physics. The article discusses the concepts of the methodology for providing resources for fire departments in extinguishing fires and conducting emergency rescue operations. An algorithm of necessary actions in case of fire was obtained, including the provision of labor resources, material and technical resources and working capital. When extinguishing fires and carrying out rescue operations on large fires, and in our case at facilities with a massive stay of people, an algorithm of actions has been developed to provide resources for fire departments, for the implementation of which the rear is responsible in the person of the head of the rear. A mathematical model and methodology have been developed for providing fire departments with resources when extinguishing a fire and conducting emergency rescue operations using the example of the Passage shopping and entertainment center in Voronezh. We received an algorithm of certain actions that ensures fire extinguishing and emergency rescue operations, labor resources (fire brigade personnel), material and technical resources (fire vehicles, fire fighting and rescue weapons and equipment), working capital (gasoline, oils, foaming agents and other consumables). When extinguishing fires and carrying out rescue operations on large fires, and in our case at facilities with a massive stay of people, the rear, represented by the head of the rear, is responsible for the algorithm of actions to provide resources for fire departments. Recommendations were given to officials when extinguishing the fire in question. A scheme for the alignment of forces and means has been developed.

Using an object-oriented environment to create programs using control statements and loops

Akamsina

Lemeshkin³

2022

The features of the development of packages of applied programs using control operators and loops in the object-oriented environment of C ++ Builder are considered. The examples of work with the use of control operators and loops in C ++ Builder developed by the authors and the corresponding algorithms are presented in the form of block diagrams, program codes and program interfaces. The technology of using the corresponding operators in the development of branching and cyclic algorithms in solving engineering problems is described. The features of using in practice the debugging tools of the environment when debugging programs with branches and loops are stated. The analysis of the hierarchy of conditional operators from the point of view of the optimality of its organization and the syntax for describing various variants of cyclic structures in the C ++ Builder language are carried out. The external specification and the main features of the solution of the assigned tasks are considered. It is substantiated that the development of algorithms and programs using control operators and loops in the C ++ Builder environment is the basis for solving engineering problems using software on a computer. The proposed approaches and algorithms can be used in practice as they can serve as a complex example in solving the set engineering and technical problems.