bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative analysis of the various types of structures for the electric transmission power cables supports’ static work in the software complexes implementing the finite elements method
Authors: Sabitov L S , Ziganshin A D , Radaykin O V , Akhtyamova L Sh , Yazyev S B
Published: September 2020

The aim of the work was to conduct a comparative analysis of the static work of two structural types of steel poles of power lines (HVPC): in the form of a closed profile rods-shells with height-varying wall thickness and in the form of a trellised trihedral design made according to the patent [1]. In this case, both types of supports were considered for three different heights-under power lines of 10 kV - 9-11 m high, 35 kV - 20.6 m high and 110 kV - 22.5 m high, respectively. The bulk of the research was carried out at the ANSYS PC, where the joint work of the structural system “steel support of an overhead power transmission cable - a prefabricated and dismantled reinforced concrete foundation of a new type [2] - soil base” was considered. For this, the authors proposed a computer simulation technique that takes into account the spatial work of the structural system elements and the physical nonlinearity of the materials they are made of. At the same time, the Mises strength theory was used for steel, Williams-Warnake yield criterion was used for concrete, and Drucker-Prager yield criterion was used for the base soil. In addition, all the necessary geometric, power, and physical characteristics of the model were obtained on the basis of the current building codes for the energy facilities’ design. The auxiliary engineering calculations taking into account these codes were performed in the LIRA-SAPR 2017 PC in a linear formulation.
To the multi-hollow reinforced concrete floor panels’ calculation according to the two groups of the limit states
Authors: Vasiliev A S , Plekhanova E A
Published: September 2020

It is known that multi-hollow panels for simplification in the calculations are presented in the form of I-beams (T-shaped) beams and are considered according to the beam theory. The material for such structures is reinforced concrete - a composite material that combines the mutual work of concrete and steel reinforcement. The purpose of this work is to study how the cross-sectional representation shape of the multi-hollow panels made of the reinforced concrete structural material affects the samples of various lengths, by establishing the action of the above factors (the way the cross-section and length are represented) on the bearing and deformation ability, as well as the cracking load. We examined the various length panels’ samples, freely supported and working on bending, with a cross section in a natural form, in comparison with the similar length I-beam samples. The load was sequentially applied to the samples in increments of 1 kN, until the yield strength of the reinforcement in the stretched zone was reached. A numerical study of multi-hollow panels was carried out, taking into account the physical nonlinearity of reinforced concrete, with the formation of a plastic hinge in the middle of the span. The load-deflection graphs are obtained when modeling the corresponding lengths of the samples with a natural and I-section shape. It was found that the length of the panel affects the calculation results of the shapes under consideration, and the shorter the length, the more obvious the deviation in the load-deflection graphs. The correction factors to refine the calculations of reinforced concrete slabs for cracking, deformation and breaking loads are proposed.
The building structures’ bearing capacity assessment with the nomogram method
Authors: Pirumyan N V , Stakyan M G
Published: September 2020

The complex assessments of the main jointly acting and heterogeneous factors (geometric parameters, stress concentration, surface hardening and compressive stresses) on the building structures elements and units’ fatigue resistance, which in early studies were taken into account in a differential way, are considered. In this paper, for the factors’ complex assessments, the method of prioritizing the choice of one of them, which is dictated by the requirements for building structures (design, technological, operational, technical maintenance, repair and restoration), is adopted. As a priority factor, in particular, the technology of surface hardening is considered, the use of which significantly increases the structural elements’ bearing capacity and allows the application of relatively cheap low - and medium-carbon structural steels as the main material. Using the method of system analysis, the classification and grouping of the parameters of these factors and fatigue resistance indicators was performed and their database was created. The statistical data processing was performed and the regression equations between the specified parameters and indicators were obtained. Using the principle of the priority of factors, systems, the obtained equations for applying the interrelated values of these indicators in calculations for the bearing capacity of structural elements are formed. Using the equations of the obtained systems in I…IV quadrants using the grid (x,y), considering the logical sequence of determining the fatigue resistance and the priority influencing factor’s principle, by means of the nomogram method three nomograms are composed, with the priority to the factors considered, which allow to determine the whole complex of these indicators promptly and taking into consideration the production environment by the simple graphical constructions means.
The strengthening technologies’ application in building steel structural elements
Authors: Pirumyan N V , Stakyan M G
Published: September 2020

The issues of increasing the bearing capacity and fatigue resistance of structural building elements, working surfaces and edge transition sections affected by the surface plastic deformation, are considered. The regression relationships between the influencing factors’ parameters and fatigue resistance coefficients are revealed. Taking into account their relationship, the multiparametric functional relationships and systems of equations are compiled making possible to determine the optimal values of the remaining parameters in the case of the priority factor proposed parameter’s (coefficient) presence.
Fiber reinforcement as an alternative to the compressed zone linear reinforcement and the flexible concrete elements stretched zone prestressing
Authors: Mayilyan L R , Shilov P A , Shilov A A
Published: September 2020

The results of a numerical experiment in the framework of a theoretical study of the strength and crack resistance of the reinforced concrete beams available or non-available in fiber reinforcement are presented. The fiber reinforcement presence influence on the strength and crack resistance of the reinforced concrete beams’ normal sections is determined by varying the following parameters: working reinforcement class; percentage of reinforcement with steel reinforcement; the presence and degree of the reinforced zone reinforcement prestressing; the presence or absence of the beam compressed zone reinforcement; the steel fiber reinforcement presence. Reinforcement of concrete with steel fiber had a significant impact on the theoretical strength and crack resistance of the reinforced concrete elements’ normal sections, both in the presence and in the absence of the working reinforcement prestressing. The calculation showed that in some cases the presence of fiber reinforcement will eliminate the prestressing of the working reinforcement or significantly reduce its level, abandon the reinforcement in the compressed zone and, under the certain conditions, replace the high-strength prestressed reinforcement A600 with the reinforcement A400 without increasing the total consumption of steel by the sample.
The effect of contact friction forces on the stress - strain state of an inclined base during the construction of buildings on complex terrain
Authors: Barykin B Yu , Barykin A B
Published: September 2020

The paper considers the interaction of contact friction forces in the system “base - inclined foundation - holding structure” and their influence on the stress-strain state of the soil base in the zone of the foundation structure’s adjacency to the holding structure. The main features of the contact friction forces’ distribution, the places of their application and the calculation algorithm are determined. The design scheme of the inclined foundation is developed taking into account the occurrence of a generalized total friction force. Based on the obtained dependences, the additions and refinements to the existing methodology for calculating foundations on an inclined soil base using a variable stiffness coefficient have been made.
The stress state numerical study of a rectangular cross-section beam with round drillings
Authors: Saiyan S G , Paushkin A G
Published: September 2020

The study of the rectangular cross section beam’s stress state, weakened by round drillings has been performed. The results’ reliability is confirmed by calculation in the LIRA SAPR and ANSYS Mechanical APDL software packages. The results have been compared with the solution by the materials resistance methods.
The water structures’ operability analysis, taking into account damage and certain negative factors
Authors: Degtyarev G V , Bakhtamyan N A
Published: September 2020

Damage to individual structures or their elements at water structures can lead to irreversible consequences with significant damage and tragedies. The influence assessment degree of the plastic deformations, local subsidence of soil on the structure performance is an urgent task that requires attention.
Oscillations of the variable cross beams under seismic and technogenic influences (part I)
Authors: Kulterbaev Kh P , Baragunova L A , Shogenova M M , Bulanov S G
Published: September 2020

Free compressed beam transverse vibrations of a variable cross section carrying a distributed mass are considered. The mathematical model of oscillations is presented as a boundary value problem from the basic partial differential equation of the fourth order hyperbolic type in spatial coordinate, the second order in time and boundary conditions. The technical theory of the rods’ bending vibrations, based on the Bernoulli hypothesis about the invariance of flat beam cross-sections, has been used. The task is to determine the eigenvalues, eigenmodes of oscillation and the attenuation coefficient (extended Sturm-Liouville problem). It has been argued that solving the problem by the analytical methods is impractical due to the large transformations and calculations volume. The variables separation methods, finite differences and computer technology have been used. An algorithm for solving the problem, implemented in the Matlab software environment in the form of high-precision graphical and analytical calculations, has been developed. On a concrete example of a beam, verification of the proposed mathematical model has been demonstrated. The practical conclusions have been made.
Experimental studies of the reinforcement percentage effect on the modulus of soil deformation fixed by cementation
Authors: Prokopov A Yu , Sychev I V , Revyakin A A , Soboleva O N
Published: September 2020

The article presents the experimental studies’ results on the subsidence soils reinforcement percentage influence during cementation on the deformation characteristics of a soil base after fixing. A nonlinear dependence of the fixed soil deformation modulus on the reinforcement percentage and the initial (natural) deformation modulus is established. High convergence of the obtained theoretical and experimental data is proved.
Architectural design and manual graphics in the student’s educational activities, their relationship with the mental peculiarities of a future specialist
Authors: Kupriyanova E V
Published: September 2020

The article presents the results of the scientific studies of the plasticity / rigidity of thinking among the bachelors of the Academy of Architecture and Arts, receiving training in the specialties: architecture, design of the architectural environment. In the field of modern architectural design, there is a process of reanimating the importance of hand-made graphics as an indispensable component of professional competence, which cannot but affect the content of training programs in training the specialists in this field. The author proves the hypothesis that there is a relationship between the abilities of students to use manual graphics in the design of projects with such a property of thinking as creative flexibility. The deliberate development of this ability through the educational tools will optimize the students’ assimilation of basic professional competencies in the field of architecture and design, increase the competitiveness of a university graduate.
Architectural features of modern low-rise housing for large families in Russia (on the Rostov region example)
Authors: Kuleshova A M , Molchanov V M , Kuleshova I M
Published: September 2020

The main direction of the Russian demographic policy is to increase the number of large families by stimulating this category of the population with numerous federal supporting programs, including those aimed at improving the level of housing provision and comfortable living conditions. The research on certain aspects of housing design for large families was carried out by a number of authors, but a single concept has not yet been formed. This article discusses the development of housing architecture for large families, starting from the Soviet period, the main types of modern buildings of this housing type, the methods of organizing apartments in different urban conditions, as well as the typological features that affect the modern housing architecture formation for large families.
The Adyghe (Circassians) interior of the XVIII - XX centuries
Authors: Unezheva Z S
Published: September 2020

The article discusses the differences and monotony of the traditional home and the interior decoration of different population strata. In some cases, the nobility and gentry needs were the reason and basis for a slight increase in the houses’ construction and interior, which started being differentiated from the poor in terms of population. The article covers the XVIII - XX centuries, when the small changes started taking place in the interior and in construction, related to the climatic conditions and places of residence.
Housing architecture of Yerevan. Typology, Forecast
Authors: Safaryan A Yu , Safaryan Yu A
Published: September 2020

The stages and features of the housing architecture formation in Yerevan in 1920-2020 are presented. The typological principles of their architectural and planning decisions are considered. The authors emphasize the creative contribution of famous Armenian architects who laid the Yerevan’s housing architecture formation foundation. A number of recommendations for the modernization of housing built in Yerevan during the 1920-2020 period are given.
Modern social housing
Authors: Evenko M G , Doroginin Yu V
Published: September 2020

It is customary to consider social housing as housing provided to the citizens without sufficient financial ability to purchase or rent a house at market prices. The bulk of such housing is provided by the state, but there is subsidization and construction at the employer and non-profit organizations’ expense.
Space structure features of the Couple’s retreat garden in the context of traditional private gardens of Suzhou
Authors: Tceluiko D S
Published: September 2020

The article is devoted to the study of the Couple’s retreat garden’s spatial elements. The paper considers the history of the territory formation. One of the most important personalities in the history of the garden is Shen Bincheng. It was he who made the estate in the way we know it today. The garden was created under the influence of the Qing Dynasty culture. However, it is very different from other “classical” gardens of the Suzhou city and the Jiangnan region. The planning structure of the garden has been studied in detail. It consists of three sections: Western garden, central district and Eastern garden. The object under consideration is unique, since the garden part is divided into two zones in it, each of which is not large in the area and the center of each site is a stone mountain. The The Couple’s retreat garden can be more attributed to landscape gardens, which are created for the observation from the outside and are not intended for various kinds of interactivity.
Actual issues of the settlements’ historical preservation center of the Kuban
Authors: Subbotin O S
Published: September 2020

The main architectural and urban issues in the ratio of old and new in the historical center of settlements are considered. Attention is focused on the scale of “intrusions” in the specified center during the 20th century. The assessment of the current urban development situation in this period is given. The concrete examples of the formation and development of these centers in the historical retrospective of the Kuban settlements are given. Some historically valuable city-forming objects are noted. Particular importance is given to the preservation of the historical environment and objects of architectural heritage. Attention is drawn to the principles of “green” architecture for their implementation in the historical center.
An analytical reading of the planning structure in Munich
Authors: Gelfond A L , Erofeeva I V , Moiseenko V A
Published: September 2020

The Munich example demonstrates the architectural and cultural approach to the analysis of the large cities’ planning structure. In the context of the urban planning fabric’s historical development, the main planning axes are singled out and a conceptual model of mega ensembles is built. Particular attention is paid to the city’s hydrography, the main components of which are the Isar River, the Nymphenburg canals and the Northern system of the Munich canals, which began to be formed in the 17th century and had finally been developed by the beginning of the 20th century. Munich’s northwest quadrant, formed much earlier than the other three, was chosen as the main object of study, on the territory of which the urban triptych was identified as the main system-forming mega-ensemble, formed, firstly, by the city’s historical center with two other triptych elements emanating from it Brynner Strasse and Ludwig Strasse, respectively, secondly, the Olympic Park and thirdly, the Nymphenburg Palace and Park complex, connected with the second element of the triptych by the Nymphenburg-Biedersteiner Canal.
Opportunities for integrating the historical industrial enterprises into the modern urban environment in Rostov-on-Don
Authors: Vereshchagin E I , Mokina Al Yu
Published: September 2020

Today, historical industrial facilities and their territory, located earlier on the outskirts, industrial enterprises with the growth and development of cities, were included in their architectural and planning structure. There is currently a clear tendency to orient the historical industrial heritage objects to urban public spaces using the re-functionalization methods in the historical industrial heritage reconstruction in our country and foreign design practice. The relevance of the industrial facilities’ reconstruction in Rostov-on-Don is due to the presence of irrationally used urban areas and the need to create the universal modern spaces for work, leisure and entertainment in the central residential quarters of the city. The study examined two industrial heritage sites and presented the design solutions for them.
Christian Temple Tkhaba-Yerdy in architecture history of the North-East Caucasus
Authors: Pishchulina V V
Published: September 2020

The article is devoted to the study of the Tkhaba-Yerdy medieval temple’s architectural features in the village of Dzheyra, Ingushetia, its comparison with other three-church basilicas. The scientific novelty of the article is due to the fact that a comprehensive study of the planning, volumetric and spatial solutions and the building material of the temple based on the results of physico-chemical analysis allows dating it to the 7th century. The activities of Kartli and, presumably, Armenia should be associated with the construction of basilicic temples in the north-eastern Caucasus. The temples of this composition in the Assin gorge of Ingushetia, Tkhaba-Yerdy and Albi-Erda can be attributed to a number of signs as variants of the three-church basilica, or the Armenian church hall with a detour. In Armenia, this type was distributed until the 7th century. In Kartli, three-church basilicas were built until the 14th century.
Sacred topography of Anakopia fortress and its surroundings (Abkhazia)
Authors: Pishchulina V V , Bgazhba O Kh , Argun A V
Published: September 2020

The article highlights the Abasgians Christianization processes started by Byzantium in the VI century and their interaction with the Abasgians mythology. However, the traditional mythological representations and beliefs of the Abasgians were not supplanted by Christianity, as well as by the ancient philosophy. The topography of the early church buildings on the territory of Anacopia and its surroundings shows that in the church buildings the Abasgian people preserved the ancient system of sacred places and their landscape-visual connections. The sacred meaning of Anacopia has been stably maintained for millennia, but has undergone transformations. According to a complex of sources, it was concluded that the sacred (cultural) significance of this place was the basis of the worshipers’ power over their fellow tribesmen; religious and political center around which a system of sacred topography had been formed up to the time of the Abkhazian kingdom.
Complex monitoring of natural-technogenic sphere in preserving of cultural heritage
Authors: Nesterova A N
Published: September 2020

Complex monitoring includes a range of essential factors that allow to fulfil effective activity on preserving cultural heritage and to track technical condition of objects. Performance of monitoring of objects of historical-cultural heritage and adjacent territory promotes the piling of necessary bulk of data about technical condition of memorials, the causes of appearance of ruins and making meliorative and governing decisions.

Complex monitoring – is the system of observing and control, covering most or all of the components natural-technogenic sphere such as dangerous geological processes and phenomena, monitoring of the changes of ecological condition of environment, monitoring of sources of technogenic impact ant etc. [1].

In order to get more accurate data, it is important to examine all constituents of complex monitoring separately. The structure of complex monitoring includes: geotechnical monitoring, monitoring of technical condition of the object of research, ecological monitoring.
Improving the adhesive properties of painting thermal insulation with cement-containing surfaces
Authors: Kramarenko A V , Dinoshuva Ya P
Published: September 2020

The article describes the main methods of increasing adhesion, analyzes the cement-containing component that was added to the heat-insulating material based on the experiment, draws the appropriate conclusions about the change in the adhesive properties of the resulting composition.
Zeolite tuff as strength improver in cements
Authors: Smorodinova T N , Kotvanova M K , Sologubova I A , Pavlova S S
Published: September 2020

This study aims to obtain cement with valuable properties by introducing additives enhancing concrete strength. Zeolite tuff of the Lyulinskoe deposit (Russia) that had not been studied before was tested as a strength improver. The elemental and phase zeolite tuff compositions were established by X-ray fluorescence and X-ray phase analysis. Electrical conductivity and cement paste pH were measured, and the pozzolanic activity of zeolite additive was evaluated. The Portland cement hydration in the presence of zeolite leads binds not only calcium ions, but also sulfate ions. The obtained kinetic curves of electrical conductivity and pH level gave stage wise description of Portland cement hydration and strength development, which reveals the possibility of managing the curing process. It was established that 5% zeolite ground to 5–10 μm increases the compressive strength by 15% in 7 days and by 21% in 28 days.
Research on the hot-deformed powder materials splicing surfaces’ quantitative characteristics
Authors: Goncharova T V , Bandura Yu N , Pashyan D A , Prous N G , Sukhomlinova V V
Published: September 2020

This article presents an experimental determination of the powder materials splicing surfaces’ quantitative characteristics obtained by hot processing.

This study analyzes the hot deformed powder material’s microstructures. We consider what changes the powder grains have undergone and what are the single crystals of different sizes, a certain configuration and color, as well as the crystallographic planes’ direction with respect to the thin section plane. In the course of the work, spheroidization of particles and their coagulation due to the absorption of small particles by large particles have been observed.

The influence of the initial particles’ size on the structure formation of powder alloys by using the homogenization features during sintering has also been investigated. The deformation character of the porous steel particles’ material compacts from two types of a mixture based on coarse and fine iron powder with different porosity is considered. As a result, after sintering, an increase in semi-finished products and a corresponding increase in porosity were observed. In this case, the effect nature of the dependence on the porosity of samples of powders of various sizes on plastic deformation is traced on thin sections of the porous semi-finished products. With a greater degree of compaction, the activation of the surfaces collapsing during hot stamping of pores and their rapid coalescence after reaching physical contact are detected.

The work revealed that the investigated non-porous hot-deformed steel is almost uniform in structure due to the complete deformation of all particles of various sizes original iron powder. The clear boundaries of the particles’ coalescence surfaces on the studied samples are traced.

In the course of this study, certain dependences of the splicing quality on interparticle contact surfaces during hot pressure treatment of powder semi-finished products and the properties of the obtained hot-deformed powder materials on the considered technological parameters [1, 2], for example, such as the particles’ size, determining the interparticle splicing surfaces boundaries length, differences in the mixture particles’ deformability, leading to a decrease in the volume of material deformed during hot processing pouring powder semi-finished products.
Constructing a transformation curve of the age resistance coefficient
Authors: Matseevich T A , Korolev E V , Askadsky A A
Published: September 2020

One of the possible approaches to the analysis of the materials’ age resistance coefficient dependence physical mechanism is proposed. The material’s durability at constant voltage is described using the Zhurkov equation and at alternating voltage it is described using the Bailey criterion. Under the action of small deformations on the material, its structure is ordered, which is expressed in a decrease the structurally sensitive coefficient value in the Zhurkov equation. This leads to an increase in durability by 20%. The resistance coefficient dependence is of an extreme character and can be maximum observed at the time to failure lg tp
≈ 2 (sec).
Finite element calculation model of the piled rafts
Authors: Dzhankulaev A.Ya. , Guenko N.A. , Dzhankulayev A.A. , Dyshekov H.M.
Published: September 2020

Finite element model for calculating piled rafts in difficult geological conditions.
A chemical reaction model in a porous medium
Authors: Kuzmina L I , Osipov Yu V
Published: September 2020

Chemical reactions in a porous medium are found in many natural phenomena and technological processes. Reactive substances dissolved in groundwater can significantly change the soil strength. The precipitate formed as a result of the reaction changes the porous medium structure and affects the porosity and permeability. A one-dimensional model of the reaction of two reagents in a homogeneous porous medium with a linear reaction function is considered. The model includes the mass balance equations of each reagent and precipitate, and the kinetic equation of precipitate growth. It is assumed that the precipitate is stationary and the growth rate of the precipitate is proportional to the reagents’ concentration. A carrier fluid with constant concentration reagents is injected at the empty porous medium entrance. The reaction front moves in a porous medium at a constant speed. The exact solution to the problem is constructed by eliminating the unknown functions and lowering the equations’ order. A Riemann invariant that relates the concentration of sediment and reagents to the system’s characteristics was found. The reaction’s numerical simulation is performed. It is shown that, for a long time, the reagents’ concentrations and the precipitate tend to final limit values. Sediment profiles always decrease monotonously, and the type of the profiles’ convexity changes.
Improving the economic and operational reliability of the designed structures by improving the acoustic methods for diagnosing invisible material microdefects
Authors: Arshinov G A
Published: September 2020

Annotation

The study aimed at increasing the economic and operational reliability of various designed building structures, improving non-destructive acoustic methods for detecting hidden microdefects in the materials used has been carried out. Construction, water, oil, gas pipelines must have the strength to ensure the trouble-free operation during the entire period of their operation, which determines the economic and operational reliability of structures. Strength can be significantly reduced if the latent microdefects are available in the material. In the field of such structural disturbances, material destruction, leading to loss of stability and bearing capacity of structural elements, accompanied by huge economic losses, environmental degradation and, in the worst case, human losses can develop. Therefore, it is necessary to improve the non-destructive acoustic methods for detecting latent microdefects. The mathematically refined models that describe the propagation of nonlinear deformation waves in thin-walled structural elements should be constructed for this. This is possible if the real physical and mechanical parameters, leading to more accurate characteristics of the deformation waves required for acoustic methods of the materials’ defectoscopy are taken into account. Such models include nonlinear mathematical models describing the propagation of deformation waves in rods and cylindrical shells, when the real hereditary properties of the material, the possibility of developing large deformations in them, and the effects lost in the framework of models that consider only the linearly elastic properties of structural elements are taken into account. Such a simplification causes unacceptable errors in the calculation of wave parameters and, accordingly, gives far-from-truth results of an acoustic study of the presence of invisible microdefects in the material of thin-walled structural elements that weaken their strength, and the economic and operational reliability of the designed structures and pipelines depends on it.
Algorithms for creating ruled surfaces according to various initial conditions
Authors: Zamyatin A V , Zamyatina E A , Sopchak N A
Published: September 2020

The article considers the algorithms for creating the ruled surfaces according to various initial conditions. Ruled surfaces are widely used in the development of technical objects, building structures, surfaces of road dumps, dams, etc. This is due to the manufacturability of such surfaces’ production. They can consist of rectilinear elements from various materials widely produced by modern industry. A lot of research is devoted to the development of algorithms for creating various types of the ruled surfaces. But most of them consider certain types of surfaces. In this paper, an attempt to create the most general algorithm for creating various types of the ruled surfaces is made. This will significantly expand the range of the ruled surfaces used in practical problems. The algorithms are implemented using the Object ARX technology for the AutoCAD system, which can greatly simplify the development, while using the extensive capabilities of AutoCAD. The algorithms developed in the article can be applied in the design tasks of various objects using ruled surfaces, as well as for developing the new types of ruled surfaces and studying their properties.
The educational organizations buildings and infrastructure health indicators’ monitoring by means of information systems
Authors: Basina N I , Pozharskaya E N , Popova S L , Rybalka Yu A
Published: September 2020

The development of computerized monitoring systems for the educational environment health-saving indicators is currently one of the most urgent tasks of pedagogical research. The article presents the experience of using the information system developed by the Don State Technical University and used to conduct the monitoring studies in 1210 educational institutions of the Rostov region. The information system for monitoring the education sector includes monitoring the indicators of the educational organizations’ property complex, the technical condition of the school building and the institutions’ visual environment design. The information system used in the Rostov Region is the first computerized system for monitoring the environment of educational institutions in the Russian Federation, which allows automatic control of the environmental factors for students and institutions’ property complex technical re-equipment optimization to ensure the health activities of schools throughout the region.
A new generation rice card design for organic rice farming
Authors: Vladimirov S A , Safranova T I , Prikhodko I A
Published: September 2020

The article proposes the construction of a new generation rice card. The results of a new generation rice card’s construction and operation in “Agrofirm Achuyevskaya” LLC in the Slavyansk region of the Krasnodar Territory are presented. This map makes it possible to highly efficiently control the groundwater level, which, in turn, allows to maintain the required parameters of soil moisture with the necessary and sufficient accuracy. A mathematical model to reduce the price of rice irrigation system construction has been developed, based on the integrated approach to the managerial decisions’ formation in the process of choosing the best option for the construction of an ameliorative system with predicted system’s operational parameters. It helps to quantify the influence strength and direction of the factors taken into account, to perform the multivariate forecast calculations based on the resources available at the construction time, scientific and technical level, construction technologies and materials. The economic effect of this rice map introduction made it possible to increase the yield of green mass of alfalfa to 650 c / ha, and corn to 720 c / ha. An increase in rice crop and the associated rice crop rotation was obtained. The decrease in groundwater levels has improved the ecological and reclamation condition of the rice fields’ soils. Optimization of the managerial decision-making process during the irrigation system construction allowed to reduce the amount of labor costs by 5%, energy resources by 20%. The increase in rice yield amounted to 15%, while reducing its cost by 5%.
Improving design solutions for the organization of construction production and the construction site equipment taking into account environmental safety during the reconstruction of facilities
Authors: Manzhilevskaya S E , Petrenko L K , Azarov V N
Published: September 2020

The designing process of the work organization for the buildings’ reconstruction has a number of features, such as the cramped conditions, tight deadlines, increased danger of work, etc. The design solutions’ development for the reconstruction work organization in any case should not lower the safety level for the construction workers and personnel of the reconstruction object, as well as damage the environment, in particular, air pollution by the dust particles from the construction processes, therefore, work execution projects should take into account the organizational and technological measures for labor protection and environmental safety of the territory where the reconstruction works are carried out. Environmental management included in the reconstruction of facilities should cover all the time both the space of the construction site and the processes organization that can minimize harm to the neighboring territory. This article discusses the measures to implement environmental monitoring in the work schedule at the construction site and construction equipment with cost-effective measures to combat the air pollution. The introduction of economically viable means of combating air pollution into design solutions, as well as the construction production effective organization, reducing the environmental burden on the territory, will allow the contractor to increase its competitive advantage when participating in tenders and determining the contractual price for the building reconstruction. The choice of cost-effective protective measures can save the costs, subsequently determining the profit of reconstruction work.
The Amur region volumes housing theoretical substantiation and forecasting
Authors: Aksenov A A , Shvydenko N V , Aksenova E G , Meshcheryakov S V
Published: September 2020

The article substantiates the need to determine the target volumes of housing construction in the Amur Region, taking into account the investment development attractiveness, the regional authorities’ policy, the land resources’ availability, engineering networks, the availability of building materials under various scenarios of economic development. The work involves a medium-term forecasting model for the regional housing market development with a 3-year planning horizon. The problem in obtaining quantitative estimates of market development (the price ratio, housing demand and supply) when changing the planned volume of housing commissioning and macroeconomic indicators has been solved. The data obtained as a result of the study can be used in developing the socio-economic policy of the Federation subject, forming a regional budget for the planning period, developing and implementing programs to provide affordable and comfortable housing for the population and the housing development in the region. The forecasting results on the Rostov Region and the Stavropol Territory examples were tested by the authors and reported in the framework of the International Scientific and Technical Conferences “Construction and Architecture: Theory and Practice of Industry Development” (CATPID-2018, October 8-12, 2018, Nalchik) and “Construction and architecture: theory and practice of innovative development” (CATPID-2019, October 1-5, 2019, Kislovodsk).
The monolithic buildings complex renovation’s organizational and technological model creation
Authors: Topchiy D V , Bolotova A S
Published: September 2020

Reliability and quality of monolithic construction works are determined by analyzing the system of preparing certain technological operations for implementation, establishing and ensuring the order, sequence and time schedule of works, and all types of resources supply. Periodic inspections of compliance with construction norms and regulations are held in the course of construction and erection works. As a follow-up on such inspections, the prescriptive orders on the detected nonconformities rectification and the violations within a specified time limit are issued. There is no provision for the time consumed by the corrective action in the calendar plan, and consequently the actual duration of construction as often as not exceeds the scheduled term to a great extent. In this connection, there is a task of assessing the level of the violations’ impact on the functioning efficiency and the production processes organizational quality. This paper explains how to create a proper database model to account for the defects and irregularities in monolithic construction and the details specifications of the technical failures impacting the organizational and technological construction reliability. The information technology use enables to calculate the various performance indicators quickly so as to streamline the defect and failure detection procedures adhered to by a contractor. The specialists in the field of risk analysis and assessment, experts and insurance companies, as well as the organizations conducting the assessment can use the methods described herein.
The influence of the technological and organizational factors on the construction process
Authors: Zilberova I Yu , Petrov K S , Neama Mohsen Al Fatla Abdullah
Published: September 2020

The article identifies the groups of factors that influence the process of building construction. The influence of the buildings’ construction specifics was taken into account. It was established that the necessary and sufficient for assessing the specifics of building construction issue is to take into account the factors that have the most significant impact, namely: the effect of construction site tightness; the factors complicating the structures’ transport; the factors complicating the structures’ enlarged assembly; the factors complicating the structures’ installation; the factors of production technology; the factors describing the construction planning.
Assessment and quality management of construction and installation works
Authors: Kuleshov I V
Published: September 2020

The work is devoted to the study of procedures for assessing the quality of construction and installation works. It is emphasized that there are significant differences in the parameters for assessing the state of an object and a process. When the process is flowing, it most often requires smoothness, the absence of spasmodic changes. Violation of these requirements affects the technological process final result - the finished product’s quality. It was revealed that the quality of the process can be determined by decomposing it into the operations and evaluating deviations in synchronization, coordination, technological modes and the costs of their implementation. However, the sequentially carried out processes, as follows from the theory of metasystems, can be evaluated by the readiness of the next operation. In this regard, the task of optimal availability control is further posed and solved.
Innovative technologies in on-line construction production management
Authors: Pobegailov O A , Zhdanov A N , Rodionov A A
Published: September 2020

The article considers the problem of using on-line programming and management programs in the organization and construction technology. The introduction substantiates the importance and significance of the on-line construction management problem, reports on the universal model development of such management. The methods and study section give an idea of the on-line construction management methods. A visual diagram of the control model is proposed. The results and discussion section explore the prospects for using the programs based on this technology. The application areas of innovative software in construction are proposed. A review of such systems’ real application examples in the large construction companies’ practice is given. In conclusion, it is concluded that there is a significant reduction in human factors to ensure high quality construction, reducing time and labor costs when applying the proposed method of construction management and the merits of the model developed by the authors.
The mechanism of the construction enterprise’s strategic planning
Authors: Nebritov B N
Published: September 2020

The minimalism of the construction enterprise’s strategic planning, which meets the industry specifics. The main components of such a mechanism and their relationship are highlighted. The structural mechanisms are the blocks; the analytical mechanisms are target, strategic. The contents of the blocks are disclosed. The strategic planning mechanism is presented as a defining part of a unified management system for the construction organization activities, which determines the desired state of the control object and forms a program for achieving the goals. Strategic planning is considered as a process, the initial stage of which is the organization’s mission formation, conducting marketing research, developing goals and strategies, determining the desired parameters of the firm’s “order portfolio” dictated by the strategic settings. Within the framework of studies related to the strategic planning mechanism, the solutions to a number of problems published in the scientific publishing houses are proposed. During the studies, the key concepts and directions of the strategic planning are clarified, the methods of domestic and foreign authors that define the strategic planning processes are described. The proposed strategic planning mechanism activities of the construction company provides an opportunity to systematically approach the issues of finding the ways to achieve the well-being of the company in the short and long term.
Modern directions of low-rise housing construction development in the world: economic and technological aspect
Authors: Sekisov A , Ovchinnikova S , Grebneva V , Chernyshova M
Published: September 2020

Today, all over the world, the focus is on the use of the new technologies that would significantly improve the construction quality. The paper considers the low-rise construction development as a whole, analyzes one of the most promising areas of architectural and construction development in the world - modular construction, explores all the positive and negative aspects of modular buildings.
Updating the algorithm for processing laser scanning data using linear objects as an example
Authors: Gura D A , Pavlyukova A P , Solodunov A A
Published: September 2020

An increased specification degree concerning the received information about the object as one of the three-dimensional laser scanning technology’s main advantages is determined in the article according to the results analyzes of the Russian and foreign sources. Information redundancy of data at the stage of their processing can be considered as a disadvantage. This is illustrated in the article by the example of processing laser scanning data in the Credo 3D Scan program for the purpose of monitoring the air routes status. In the case under consideration, it was necessary to determine the deflection of the air routes wires over a point cloud. Before directly measuring the deflection, it is necessary to follow the procedure for processing the raw data described in the article. One of the algorithm stages is the automated search for supports and wires provided for the Credo 3D Scan program. It was found that the team accelerates the search for wires among an array of other objects. However, there is no command to calculate the numerical value of the wire deflection, that is why it is necessary to measure the distance from the points corresponding to the Earth’s surface to the lower point of each wire manually. It has been determined that the geoinformation data operative collection task has been generally resolved, while the process of their processing requires optimization. To do this, it is necessary to improve the “Power Transmission Lines Recognition” function by adding a function for automated deflection detection with visualization of each wire given value in the inscription form both in a three-dimensional model and in plan using a conventional symbol.