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  • Information model of the construction process on the example of bricklaying

    The issues of construction and practical application of 4D BIM models relate to the current issues of the development of organizational and technological design of construction at the international level. The purpose of the work is to describe the information model of the construction process on the example of brickwork. To achieve this goal, the following tasks are solved: the structure of the source infor-mation necessary to describe the changes in the construction process in space and time is developed; analytical dependencies describing the changes in the construc-tion process in space at each moment of time are obtained; the procedure for evaluating the effectiveness of organizational and technological decisions made by the designer and contractor when performing bricklaying is given. The methods of algebra and analytical geometry were used in the research. As the initial informa-tion, the data provided in the national classifier of construction resources and the register of estimated reserves are used. Analytical models are formed as a result of applying a systematic approach and methods of mathematical logic. Conclusions: 1. To build an information model of a separate construction process, it is advisable to use the existing base of estimated standards in construction. 2. It is recom-mended to apply the well-known equations describing the change in duration from the volume of labor and material and technical resources. 3. Evaluation of effi-ciency using the information model involves a comparison of at least 13 variants of the organization of work on the device of the brick masonry.

    Keywords: construction process, construction duration, construction information model, labor productivity, machine productivity, leading construction machine, machine useful power utilization factor, labor resources, material and technical resources

  • Technical criteria for choosing an excavator for pit development

    Information modeling of construction processes should be attributed to the actual problems of development of technology and organization of construction. An important part of the information model is the geometric description of the technological sites (excavator faces). When designing technological sites (faces) of excavators, it is recommended to use the maximum digging radius on the ground surface as a criterion, taking into account the conditions of work (types of soil). To calculate the minimum value of the digging radius, a mathematical expression is proposed, which contains a complex indicator describing the physical and mechanical characteristics of the soil (tga). The results obtained allow us to cut off earthmoving machines at the decision-making stage by the size of the maximum digging radius on the earth's surface. These results describe the first step in the information modeling of the process of excavation by an excavator.

    Keywords: excavator, technological parking, digging radius, slope angle of the ground slope, geometric dimensions of the face, pit, distance from the edge of the bottom of the pit to the excavator support, information model, productivity, robotization

  • Selection of the optimal set of leading machines for excavation depending on a number of influencing production and geotechnical factors

    The aim of the study was to identify the optimal choice of the set of leading machines according to the ratio of such parameters as "Time" and "Cost." Within the framework of the study, the scheme of selection of the set of machines in accordance with geotechnical and production conditions of the construction area and economic conditions of the potential customer was determined, as well as a table of selection of machines depending on the initial parameters was drawn up.

    Keywords: excavations, a set of leading machines, soil category, distance of soil transportation, the volume of the pit, the volume of the excavator bucket, continuity of work, cost, work duration, cars dump trucks

  • Simulation of the design activity diversification of innovative enterprise

    In modern construction production, the volume of management, technical, economic and legal information has increased significantly. This increase relates to the design of buildings and structures, to the documentation of construction processes, as well as to the obtaining of permits and the assessment of compliance with the requirements of technical regulations. The reason for this growth is the widespread use of digital technologies by design, construction, regulatory and Supervisory organizations. The purpose of the work is to systematize and synchronize the documentary support with the stages of the life cycle of capital construction projects from the initiation of the capital investment project to the commissioning of the capital construction project. As a result of the formalization of the system-forming principles of documentary support for each stage of the life cycle of the capital construction project, the problems of documenting the construction industry are formulated: first, the need to automate the filling of standard forms of primary accounting and reporting, second, the improvement of information transfer and storage technologies, third, ensuring reliable protection of information that describes the processes of construction of buildings and structures. These problems should be solved in accordance with the national legislation of urban planning, approved standards of technical regulation and the current regulations for the technical safety of buildings and structures.

    Keywords: documentary support of construction, life cycle, capital construction, capital investments, direct investments, design of construction projects, construction and installation works, regulatory and technical support, information

  • Quantitative assessment of the potential of the technological process in construction

    The use of the concept of "potential" in the performance of research in construction, as a rule, does not imply its quantitative assessment. The purpose of this work is to offer a quantitative assessment for the indicator "internal potential of the construction process". The use of statistical and abstract-logical methods of research allowed to develop a system of quantitative evaluation for the indicator "internal potential of construction technology". Practical application the value of this indicator in relation to a single technological process in construction can be used to calculate the speed (or duration) of construction, as well as prospects for development under the influence of scientific and technological progress.

    Keywords: internal potential of construction technology, organizational and technological solution, organizational and economic solution, speed of construction, intensity of construction and installation works, duration of construction of buildings and structures

  • Assessment of reliability in construction

    eliability, construction processes, duration, mechanized work, manual work, probability, distribution, accumulated probability curve, sampling interval.increase of reliability of calculation of the design value of duration of production of the construction works performed manually. The importance of increasing the reliability of determining the design value of the duration of works for manual construction processes is emphasized

    Keywords: eliability, construction processes, duration, mechanized work, manual work, probability, distribution, accumulated probability curve, sampling interval.increase of reliability of calculation of the design value of duration of production of the constructio