title: Determination of the characteristics of the construction machinery fleet using optimization modeling methods
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
Creators: name: ÐÐ»ÑÑÐºÐ¾, ÐÐ°ÑÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: Ð¾Ð¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ
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Ð¿Ð°ÑÐº ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÐ½ÑÑ Ð¼Ð°ÑÐ¸Ð½
ÑÑÐ¾Ð¸Ð¼Ð¾ÑÑÑ Ð°ÑÐµÐ½Ð´Ñ
Ð»Ð¸Ð½ÐµÐ¹Ð½Ð¾-ÑÑÐ°ÐºÑÐ¸Ð¾Ð½Ð½Ð¾Ðµ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
optimization
productivity
construction machinery fleet
rental cost
linear-fractional programming

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description: This research aims the optimization of determination of characteristics of construction machinery fleet. The object of the research is a construction machinery park, which includes various models of cyclic machines related to certain technological groups that perform different stages of the construction process. Aggregate and detailed optimization models were developed. The aggregate model is necessary to determine the generalized characteristics of the technological groups of the machinery fleet, the detailed one is needed to justify the optimal composition of technological groups, taking into account the renting cost of the machines and the productivity of technological groups.
The main method of optimization is linear programming, which helps to describe the complex nonlinear relationships between the quantitative characteristics of the fleet with linear mathematical functions. The main goal of the method is determining the optimal solution of a combination of the unknown variables values among many alternative solutions.
In the process of the research, the methodology for determining the characteristics of a fleet of construction machines was developed and implemented using a practical example. Based on the obtained results, the analysis of the sensitivity of the calculated characteristics to changes of the initial data was carried out and the conclusion was drawn on the adequacy of the obtained data, as well as the practical significance of the developed methodology.