Edition 4

ARCHITECTURE AND CIVIL ENGINEERING

BUILDING STRUCTURES, BUILDINGS AND CONSTRUCTIONS

Experimental design of a spatial lattice metal structure for covering an industrial building

Alpatov V. Yu., Soloviev A.V. 4-8 p

The article presents information on the development of a new technical solution for the spatially-barrel construction of the covering. The authors propose a metal three-dimensional lattice construction, assembled from corner sections using sheetshapes in knots. On the proposed solution the authors obtained a patent. To prove the validity of the previously stated assumptions about the properties of the future design, namely its reliability and safety, the authors carried out experimental design work. The proposed coating design was designed, manufactured and applied as a covering for a production building. After the installation of the roof experimental design tests were carried out by design load. The load was simulated by loading the cover with sandbags. During the tests the stresses were measured in the most important rods. The results of the measurements showed compliance with the calculated forecasts.

Studies of deflections of statically determined reinforced concrete beams based on a nonlinear deformation model

Panfilov, D. A., Chiglintsev V. Yu., Romanchikov V. V., Giltsov, Yu. V. 9-13 p

In this paper theoretical studies of statically determinated bending reinforced concrete beams of rectangular cross-section on deformation indexes under the effect of a short-time uniformly distributed load are viewed. These theoretical studies are based on the main points of the nonlinear deformation model that takes into account the nonlinear work of concrete and fitments taking into account discrete cracking. The results of calculating the deformation of beams by the method of SP 63.13330.2012 and by authors’ method are proposed as well as the results of a numerical experiment with the identification of the stress-strain state of statically determinated beams in the form of a finite element model in the program complex «Lira CAD-2017R3» using a linear and non-linear setting of characteristics of concrete and rein-forcement. Based on the results of theoretical studies, the calculation results by the methodology of the current standard with a numerical experiment, as well as with the authors’ calculation methodology are compared. All calculations and loading schemes in this technique are given taking into account the possibility of further experimental studies.

Determination of lateral pressure of light concrete mix laid in the formwork according with existing techniques and installation process modeling from the position of operational impacts

Ryazanova G. N., Prokopeva, A. Yu. 14-19 p

The analysis of existing Russian and foreign methods for determination of lateral pressure of light concrete mix laid in the formwork, its scope and technological factors is proposed as well as the study of the processes associated with the laying of light concrete mixture in the formwork system from the position of the resulting operational impacts. The results reveal that the pressure on the formwork for these methods depends on speed of concreting of the structure, and the distribution of lateral pressure light concrete mixture according to the height of the formwork is similar to the effects of heavy concrete and may be made by analogy with the plots of hydrostatic pressure, it is necessary to bring the properties of light concrete mix that consolidate by vibration to the properties of the heavy liquids with the corresponding density values.

Calculation of the advanced reiforced concrete die under impulse loading

Snegireva A. I., Kretov D. A. 20-24 p

The description of the model of reinforced concrete die for hydraulic stamping developed in the framework of scientific and practical work is provided. This invention differs from existing analogues in its increased durability. For the die the calculation method is developed and equations of motion of the structural elements for the explosive load are made up. A theoretical calculation of the structure in the mathematical environment of Mathcad is carried out. The obtained data are compared with earlier researches. By comparison the advanced die is less susceptible to deformation than the existing model. Thus the proposed die is more durable.

Results of experimental research of reinforced concrete beams resistance in the zone of shear bending

Filatov V. B., Goryntsev V. O., Binder, V. P. 25-31 p

The results of an experimental study of the strength and stress-strain state of reinforced concrete beams in the zone of shear bending are presented. The study was carried out on samples with a small percentage of longitudinal section reinforcement. The technique of testing, data on the rigidity and crack resistance of test specimens under loading, the nature of their destruction are presented. Comparison of experimental values of failure loads with calculated values obtained by the methods of domestic and foreign design standards is performed. It is shown that the empirical basis of the calculation methods limits the range of satisfactory correspondence between the calculated and experimental values of the strength of inclined sections of reinforced concrete beams under the action of shear forces. The conclusion is made about the need to improve the design models to ensure the constructive safety of design solutions.

ARCHITECTURE AND CIVIL ENGINEERING

HEAT SUPPLY, VENTILATION, AIR CONDITIONING, GAS SUPPLY AND LIGHTING

Development and research of high efficient fans of recuperators for decentralized installation in residential complexes

Matveev A. G. 32-37 p

The article deals with the introduction of decentralized fans of recuperators of exhaust air heat, including using high-heat-conducting heat pipes with an intermediate coolant as a heat exchanger. The considered criteria form a comparative basis for the developed designs of heat recuperators for ventilation air in buildings, including heat pipes. The energy and economic efficiency of such recuperators is analyzed. Areas are singled out where the use of heat recuperators is much more effective than increasing the capacity of heat pumps. As a result of ongoing research, cooling or heating modules based on aluminum, aluminum-copper radiators with integrated heat pipes will be developed as innovative products.

ARCHITECTURE AND CIVIL ENGINEERING

WATER SUPPLY, SEWAGE, CONSTRUCTION SYSTEMS FOR PROTECTION OF WATER RESOURCES

The dependence of the physico-chemical composition of drinking water Samara from the magnitude of its zeta-potential

Kichigin V. I., Zinovieva V. V., Zolotenkov V. O., Zotkina L. A. 38-43 p

The results of studies of physicochemical composition of drinking water and the magnitude of its Zeta potential establishing the degree of dependency of these indicators. Samples were taken in winter and summer. It is shown that variation of values for such parameters as alkalinity, hardness, contents of Ca2+ and Mg2+ slightly on the individual areas of sampling. It is established that values of indic ators of quality of drinking water from underground water intakes was more stable than from a surface source. In artesian water values the Zeta potential (ζ-potential) was 3-7 times lower than in the Volga. The alkalinity of the water year was slightly above winter. There were relations between the value of the Zeta potential and alkalinity of the water as well as turbidity and hardness. In most cases, the magnitude of the accuracy of the approximation was greater than 0.9.

The zeta-potential as a universal technological indicator of water quality

Kichigin V. I., Chernyagina E. D. 44-53 p

Were identified based on the changes in ζ-potential from physical and chemical indicators of source and waste waters. It is established that in the process of washing vehicles changed significantly such water quality parameters as its color, turbidity and alkalinity. Change the values of other indicators were within the statistical errors. It is proved that the increase of colour of water (and, probably, its turbidity) the range of values of the zeta-potential (ζ-potential) has narrowed. In the waste water compared to the original, the range of alkalinity values was much wider, but with a smaller range of changes in ζ-potential.

Purification of natural waters of iron and manganese

Nazarov V. D., Nazarov M. V., Razumov V. Yu., Dremina M. A., Osipova A. A. 54-59 p

It is established that application of the latest material and reagents for preparation of drinking water, allows to increase a loading filter run due to small contaminant capacity of the mineral filtering material and to lower economic costs by reagent economy as efficiency of water purification is reached even in case of its small doses.

Design solutions for construction of the main collector of rain sewage and centralized treatment facilities of the surface flow of the Volga stock in Samara

Shuvalov M. V., Strelkov A. K. 60-66 p

The main design decisions of the design and working documentation for the construction of the main collector of rain sewage and centralized treatment facilities for surface run off of the Volga slope in Samara are presented. The route of the main collector of rain sewerage adopted in the project provides the possibility to connect eleven existing releases of untreated surface sewage located in the zones of sanitary protection of water intakes of the drinking water supply system of Samara. The scheme for the purification of surface wastewater envisages a four-step treatment of water, including disinfection with UV irradiation.

ARCHITECTURE AND CIVIL ENGINEERING

BUILDING MATERIALS AND PRODUCTS

Estimation of effeciency of impervious screen at the Don main channel

Ishchenko A.V., Baev O. A. 67-72 p

The article gives an evaluation of the efficiency of the Don main canal impervious screen, field observation on the canal section before and after reconstruction are carried out. To estimate the effectiveness of the impervious measure, comparative calculations are carried out for the canal section before the reconstruction (in the earthen channel) and after it (with facing from geocomposite bentonite mats), conclusions are drawn and recommendations for channel operation are made.

ARCHITECTURE AND CIVIL ENGINEERING

THEORY AND HISTORY OF ARCHITECTURE, RESTORATION AND RECONSTRUCTION OF ARCHITECTURAL HERITAGE

Development of urban typology of Talian markets in the context of local features

Georgievskaya A. O. 73-78 p

The purpose of the paper is to identify the typology of Italian markets in the urban context. On the basis of interdisciplinary research and the author’s observations the paper considers the key factors influencing the relevance, functioning and location of Italian markets in the urban structure. The analysis takes into account cultural, historical and economic features of the development of the typology, including the integration into the urban lifestyle through the working time of Italian markets. The results of the study allow us to understand the identity of Italian markets and to draw parallels with the Russian ones.

The renaissance architectural treatises

Danilova E. V. 79-83 p

The article is devoted to the architectural theory created in the Renaissance. During this period, for the first time since Antiquity, a classical theory of architecture was created and developed, which until today largely determines modern theory. In the architectural theory of the Renaissance separate sections were developed, which eventually turned into separate directions, and retain their autonomy today. The article deals with the features of the historical evolution of architectural theory in the 15th-16th centuries, the theoretical contributions of the authors of the theory and topics that are common to all treatises are analyzed. The conclusion is made about the constants of the theory of architecture that determine its meaning and structure, regardless of the features of historical periods.

ARCHITECTURE AND CIVIL ENGINEERING

ARCHITECTURE OF BUILDINGS AND CONSTRUCTIONS. CREATIVE CONCEPTS OF ARCHITECTURAL ACTIVITY

Artistic features of planning of dwelling interior

Artemieva T. G. 84-87 p

In the article the specific of decision of artistic problems of planning of dwelling interior opens up within the framework of opposition or adequacy of relations between an order and project; the ground of necessity of the stylistic program is given as one of factors of determination of algorithms of planning of dwelling interior taking into account mental filters and cultural potentials of customer and performer. Determination of term “of контрастильность” is given as it applies to the choice of receptions of harmonization of dwelling environment. The choice of project strategy and methods of implementation of the stylistic program is offered depending on qualificatory the program of descriptions, spatial potential of initial situation and dualism of the put tasks.

The cluster strategy for sustainable development of the agglomeration on the example Samara-Togliatti agglomeration

Akhmedova E. A., Gogoleva A. V.88-92 p

The article considers the actual cluster approach to planning for sustainable development of the agglomeration territories. The authors base their study on the frame structure built in the Metropolitan area of educational, industrial, economic and financial information exchange networks. The article concludes, that the urban planning policy of development of the Samara-Togliatti agglomeration based on cluster strategy, will allow the universities in the region, including support to the University, national research University create a platform of innovation cluster infrastructure of the region.

Architectural and historical environment under the conditions of a dynamically developing megapolis

Vavilonskaya T.V. 93-98 p

The article reveals the main milestones of the development of the architectural and historical environment of the city of Samara as a dynamically developing metropolis. The studies conducted in the post-Soviet period aimed at preserving the environment and resulting from security activities and practical works of the same period aimed at updating the architectural and historical environment and resulting from urban development are critically interpreted. The article reveals the causes of the violation of the integrity of the architectural and historical environment of a large Volga city. One of the main reasons is the contradiction between the various objectives of security and urban development. Part of the analyzed researches and studies were carried out with the participation and (or) under the guidance of the author of this article.

Integraton of high-rise buildings in historical environment

Generalova E. M. 99-105 p

The article views the urbanization processes which are linked with continuous transformation of city for increasing of its effectiveness in accordance with requirements to the environment. The actual questions of the method of interaction of different historical layers in urban environment are broached. The methods and means of integration of old and new are discovered on the example of design of modern high-rise complexes with their inclusion into historical objects structure. For scientific justification of criteria of integration of existing buildings and new development in terms of vertical urban growth the concept of «hybridization method» is proposed. This method assumes that the relationship of the old and the new is based on complementary interaction principles. The examples of effective integration of high-rise buildings and historic houses are given with a comprehensive analysis of town planning, space planning, social and economic, demographic, environmental, technological and the other factors.

Virtual architecture of megapolis public buildings

Karakova T. V., Vorontsova Yu. S. 106-109 p

The article reveals the aspects of virtual architecture as a new design philosophy, operating an idea of combining of real and digital (virtual) reality and abandoning the traditional space metrics. New approaches to the organization of architectural space, as well as techniques for visual expansion and transformation of space using the latest technologies and materials are considered. The relationship between virtual and real architecture in the space of megacities is determined as well as visual illusions arising from the interaction of these relations. Different manifestations in virtuality as video-mapping, media facades, etc. are analyzed.

Modern methods of aerial photography for architectural and planning analysis of cultural heritage objects

Litvinov D. V. 110-114 p

In the article the results of research works of a large-scale object of cultural heritage of the Earth mound of the Krasnoyarsk fortress with application of aerial photography from the unmanned aerial vehicle are presented. The Krasnoyarsk fortress is a unique monument of military fortification architecture of Russia of the first half of the XVIII century and one of the largest defensive lines in Russia, created for protection of the southeastern edge of the European Russia against attacks of nomads. The results of vertical and oblique aerial photography allow to reveal the general architectural and planning composition of the Earth mound of fortress as well as to see all the area of a complex and to define the territorial unity with other fortification constructions. The methods of use of unmanned aerial vehicles give materials about the object in study and allow to bind its spatial location to the coordinate system of the terrain, to create three-dimensional model of the area, to compare the received images with the available historical cards and plans, which will significantly facilitate the task of registering the Fortress with the security authorities and withdrawing its territory from economic use.

«Theory of architecture» of A. I. Nekrasov in the context of the philosophy of space

Orlov D. N., Orlova N.A. 115-121 p

The article gives a brief overview of the main philosophical and cultural approaches to the problem of space in architecture. There are three main approaches – utopian (or hypothetical), normative, and reflective. The importance of professional architectural discourse on the subject as one of the most complete is emphasized. The famous work of A. Nekrasov “Theory of architecture” which presents a holistic, detailed, allowing extrapolation of new historical material, the concept of evolution of architectural form and space is discussed. Analysis of the work of Nekrasov is given in the context of his philosophical concepts. The assumption about cultural interdisciplinary importance of the work of Nekrasov is put forward with the aim of involving architecture into the general cultural discourse of culturologists and philosophers.

ARCHITECTURE AND CIVIL ENGINEERING

URBAN PLANNING, PLANNING OF RURAL SETTLEMENTS

Problems and prospects of optimizing of cities light environment

Orlova L.N. 122-126 p

The problem of optimizing the light environment of cities is one of the major problems in current urban planning. Natural light environment is a distribution of the optical radiation spectrum in space, perceived in the form of visual and other psycho-physiological reactions and physical and biological state of the environment of his life. Health and sanitary-epidemiological welfare of the population, municipal economy, efficiency of capital investment in the construction and preservation of non-renewable natural energy resources of the country are determined by level of utilization of natural light. In article on the basis of the study methodological bases of formation of the light environment are proposed and a number of promising directions of optimization as the main formative, environmental and economic factors of structural-spatial development of cities are revealed.

ENERGY ENGINEERING

ELECTRIC POWER STATIONS, NETWORKS, AND GRIDS

Microgrid based on a group of autonomous operating syncchronous generators

Artyukhov I. I., Stepanov S. F., Bochkarev D. A., Tulepova G. N., Zemtsov A. I. 127-131 p

The current level of power electronics development allows creating and implementing new technologies for generation, transmission and distribution of electricity. Electric machines with variable shaft speed can be used as an energy source now. The functions of providing the parameters of the generated electric power are transferred to the converter devices. The combination of controlled energy sources and electrical receivers in microgrids allows reducing energy losses, increasing the reliability of electricity supply. The article is devoted to the constructions of a microgrid based on several autonomously operating synchronous generators. As an example, microgrid for power supply of compressor station based on own use generators of gas compressor units is considered.

Compensated distribution line with increased natural loading

Kuvshinov A. A., Vakhnina V. V., Chernenko A. N. 132-139 p

Two ways of increasing of a distribution line natural loading with losses up to the capacity level, limited by the economic current density or by the current density of a heating of phase conductors are considered. The article shows that crosscurrent capacity compensation does not impose technical limitations on the possibility of natural loading of a distribution line increasing, in contrast to series capacitance, whose capabilities are limited by the active resistance of phase wires. The ratio of crosscurrent capacity compensation necessary to increase natural load of a distribution line to the capacity level limited by the economic current density or allowable by the current density of a heating of phase conductors is determined.