bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Influence of the Negative Properties of Heaving Soil on the Stability of Frame-Rod Structural Systems
Authors: Dubrakova K O , Solodilova V A 
Published: March 2021

Abstract
This article discusses the influence of the negative properties of heaving soil on the stability of frame-rod structural systems during the operation of buildings and structures. It is known that the loads and influences arising during the operation of buildings and structures can lead to loss of stability of both an individual element and the entire structural system as a whole. It is extremely difficult to accident-free work operation of buildings and structures, the foundation layer of which are heaving soils. Therefore, it is necessary to develop a methodology for determining the critical stability parameters of frame-rod structural systems that takes into account the heaving properties of base soils. In the process of loss of stability, elements of frame-rod structural systems under the influence of force factors due to the influence of constrained conditions can experience both passive and active bifurcation. With the manifestation of the negative properties of heaving soils, vertical deformations of the base occur, which can lead to a change in the type of bifurcation of both an individual element and the entire structural system as a whole. Based on the assumption that the element will pass from passive bifurcation to active at the moment when the work performed by internal forces is compensated by the work of the heaving forces, an expression is obtained to determine the critical deformation of the base soil. A statically indefinable single-span frame is considered, the right strut of which is loaded with force P and the left one with force αP. Using the displacement method, the critical stability parameters of the specified rod system were determined before and after the manifestation of the negative properties of the base soil. Based on the numerical analysis, it was concluded that the right pillar of the frame loses stability actively, involving the left one in the general bifurcation. After manifestation of the negative properties of the base soil, the type of bifurcation of the frame elements changes, leading to significant changes in the stability parameters. In this case, the critical deformation of the heaving linearly increases with an increase in the geometric dimensions of the frame and decreases with an increase in the load application coefficient α at 0,6<α<0,8 and 1,0<α<1,1. In the range 0,8>α> 1,0, these parameters are directly proportional.
Alternative Scenarios for Sustainable Redevelopment of Soviet Industrial Brownfields in Russia
Authors: Vavilova T Ya 
Published: March 2021

Abstract
The role of redevelopment of former industrial territories considered in connection with the tasks of environmental and social improvement of Russian megacities. Theoretical bases and practice of industrial areas reorganization in the world and in Russia analyzed. Urban planning features and economic restrictions determine the different ordering of the former industrial territories and the degree of development their functional and spatial relationships. Therefore, there are various opportunities for their new diversified use. Examples based on regional and local characteristics shown. A systematize attempt to the main direction of the reorganization approaches was made. Three directions that correspond to the goals of sustainable development and improving the quality of life highlighted. They received the conventional names “oasis”, “service” and “buffer”. Their brief characteristics are given.
The Strength of the Reference Node of the Beams, Taking into Account the Temperature Effects
Authors: Kuznetsov V S , Shaposhnikova Yu A 
Published: March 2021

Abstract
The features of the resistance of the support nodes of flexible reinforced concrete crossbars are considered taking into account the temperature effects. As the main area of work, a theoretical study of the influence of temperature effects on the strength and configuration of embedded metal parts and welds of the support nodes of prefabricated crossbars of various types is presented, which is an expression of the result achieved. The documents of the regulatory framework governing the design and construction activities in the Russian Federation, the existing constructive solutions of the support nodes, as well as the works of domestic and foreign scientists corresponding to the studies in this area are used. Research methods are structural and analytical analysis. Regulatory and scientific-methodological materials were studied, which made it possible to establish the parameters and factors affecting the constructive solution of the support nodes of flexible concrete elements. On this basis, proposals for improving the calculation and design solutions of support nodes are substantiated. Proposals have been developed for the calculation and design of support nodes taking into account temperature effects. It was revealed that the influence of temperature deformations significantly affects the operation of the support unit. The boundary ranges of temperatures and element sizes are determined at which the consideration of temperature effects is necessary. The features of the stress-strain state of the support node are clarified. Design recommendations are provided that provide strength and durability of the structure.
Ecologically Dependent Architectural Space as One of the Main Objects of Study in Higher Architectural School
Authors: Kazantsev P 
Published: March 2021

Abstract
The restoration of the source ecosystems lost during the urban development of the territory is due to the formation of spatial cells that are friendly to the elements of an ecosystem. Thus, education and research in sustainable architecture has to be focused on studying the principles and ways of forming an “ecologically dependent architectural space”, starting with obvious dependencies. Five levels of such a program can be as follows: 1. Principles and methods of forming a climate-oriented architectural space (entry level); 2. Architecture and renewable energy engineering systems interconnection; 3. Green systems in architecture, including city farms and algaetecture; 4. Transformable architectural forms and adaptive landscape design to the dynamics of weather and climatic conditions; 5. The specifics of architecture and urban design integrating natural ecosystems (graduate level). Graduation level main attention is focused on the study of water sensitive urban design and related concepts, as well as the concepts of renovation of the littoral marine zone. One of the obvious outcomes of experience is the need for a specialized educational program “sustainable architecture and design” in a higher architectural school.
Conceptual Modeling of Construction Industry Enterprises Management Under Conditions of Economic Instability
Authors: Acri E P , Vorontsova N V , Suslova N V 
Published: March 2021

Abstract
The present article addresses the problems of effective management of building contractors under conditions of economic instability. The issue of sustainable development of enterprises is of particular relevance in the aftermath of the global financial and economic crisis, that has hit the world economy and has led to a significant deterioration of the key indicators o global economy, to declining trust in markets sustainable, in solvency of enterprises or even in suitability of economic systems around the world. One of the main reasons for this situation was the inefficient activities of the large enterprises, which assumed excessive risks in core activities, and after that they have hidden their failed results. The transition of the Russian Federation to a market economy has demanded from domestic economic science to review basic provisions of the concept of construction industry enterprises management. This is due to the fact that the unpredictability of rapid changes in the economic environment appeared and is growing at both micro and macro-level of fast-growing market. This resulted in an objective need to develop appropriate management methods for construction companies in conditions of instability and uncertainty engendered by the unpredictable changes of modern market. Complexity and uncertainty of the given problem have led to multifaceted research associated with development of management methods for the complex for socio-economic facilities in conditions of uncertainty of global economics.
Calculation of Single-Row Foundations for Loads Acting in a Plane Perpendicular to the Row Plane
Authors: Kalachuk T G , Shirina N V , Chernysh A S 
Published: March 2021

Abstract
Basements and foundations are designed following the current regulatory documents. In the case of a faulty design, even a flawlessly executed structure will no longer meet the operational requirements. Global construction experience shows that most of the accidents in constructed structures are caused by errors made during the construction of foundations. This paper describes the methodology for calculating single-row foundations for loads acting in a plane perpendicular to the row plane. In each specific case, a large number of alternative decisions can be made by the designer. The calculation of foundations using this technique will ensure the reliability and quality of the design and construction of buildings and structures.
Formation of a Safe Environment in the Design of Adjacent Territories of an Apartment Buildings
Authors: Filonenko E I , Schekaleva M A 
Published: March 2021

Abstract
This article discusses the role of the theme “design of living space” in the structure of the course and diploma design of students in the direction of the preparation of the “design environment”. The practice-integrated process of organizing theoretical and practical training at the Vladivostok State University of Economics and Service is focused on real objects, among which one of the most important places is occupied by the organization of living space. As part of this topic, the use of the attic of a high-rise residential building for arranging the attic floor of apartments in order to increase living space for individual families, as well as their functional zoning, which implies the possibility of a full-fledged, comfortable, ergonomic human existence of modern Russian society, is considered.
On the example of the final qualifying work, the authors of the article consider the most important aspects in the design of the attic space of a residential building of an average number of floors.
Specifics of Daylight in Atrium Spaces of Architectural Objects
Authors: Medvedeva N , Kolesnikov S 
Published: March 2021

Abstract
The research objective is identifying the specifics of daylight in atrium spaces to create a comfortable architectural environment.
The paper authors have set the tasks to study current regulatory standards for daylight in the atrium building rooms, consider modern scientific developments of side, top, and combined daylighting of premises, and systematize the components to be considered in the architectural design of daylighting in atrium spaces.
The paper analyzes scientific literature sources and international standards on daylight in atrium spaces. The authors justify the impact of physical factors of the atrium space daylight on emotional and psychological perception and space-planning design of architectural objects.
Comparable results have been obtained based on both the analysis of scientific literature sources and international standards and the international experience in the design of atrium buildings. The international experience of designing daylight in atrium spaces characterized by a moderate climate and insolation conditions similar to Russian ones has been analyzed. The development of new social, spatial, and functional relations under the high urbanization conditions creates the need for the emotional and physical comfort of the living space. The relevance of the study material is justified by enhancing the comfort of the designed or reconstructed buildings.
Research on the Hydraulic Conductivity Properties of the Soil Subgrade of the Central Yakutia
Authors: Kamenchukov A V , Nikolaeva G O 
Published: March 2021

Abstract
This work presents the results of research on the effects of compaction, moisture content and temperature on the coefficient of hydraulic conductivity of frozen and not frozen soils. Moisture permeability - the property of non-saturated soil to pass through its pores a non-continuous stream of water under the influence of moisture gradients, which provide gradients of absorption force. These forces arise due to the interaction of water with the surface of mineral particles and air. This is more a diffusion process than a filtration process. Clay soils of the earth bed within the depth of the seasonal thawing layer were selected for conducting studies of moisture-conducting properties of soils. Three series of tests were conducted. During all three series of tests graphs of dependence of coefficient of moisture conductivity (KW) are constructed and corresponding conclusions are drawn. When establishing experimental regularities, statistical data of experiments performed with 5-fold repetition were analyzed. Conclusions are reached concerning the migration of moisture in frozen and not frozen soils.
Monitoring of a Seismic Isolation Object on Fluoroplastic Gaskets
Authors: Lapin V A , Yerzhanov S E 
Published: March 2021

Abstract
A special testing ground is used to study the seismic insulating properties of buildings in Almaty. It includes buildings with conventional tape foundations with a cross-tape system, seismic-insulating kinematic and supports with fluoroplastic gaskets. The buildings are equipped with engineering-seismometric service stations (stations 20,21,22). The results of experimental studies of the house on fluoroplastic gaskets, performed in the late 80s, are analyzed. The results are compared with instrumental records during the earthquakes of May 31, 2012 and August 16, 2014. The period of the maximum of the spectrum coincides with the resonance at the initial stages of vibration tests 0.44-0.47 sec. Using a single-mass calculation scheme, taking into account the presence of dry friction forces, the calculation of the dynamic model of the building on the impact of an unsteady random process is performed. The median acceleration values at the base correspond to the data of the “Seismic Zoning Map of the Republic of Kazakhstan” for earthquakes with a recurrence of 475 years and 2475 years. Probabilistic estimates of displacement values at the support level are obtained.
Adaptation of Ecclesiastic Heritage: Do Non-Offensive New Uses Exist?
Authors: Sedova A 
Published: March 2021

Abstract
The current trends, affecting religions worldwide, have led to the wide-spread “emptiness” of ecclesiastic architecture that forms a part of the backdrop and fabric of our lives, cities, and countryside. These changes have forced scholars and practitioners from many walks of life to seek adaptation solutions for these endangered structures, which influence the public image of their respective religions and nations. Through the analysis of the Church’s public image in different countries, a study of the increasing numbers of obsolete and abandoned religious buildings across the globe, and by examining different adaptation strategies worldwide, this paper seeks to illustrate the variety of adaptation solutions, and answer which of them can be defined non-offensive.
Memorial Park Evolution
Authors: Sarkisyants M G 
Published: March 2021

Abstract
This article chronologically presents the genesis of memorial parks in the European civilization. It demonstrates the transformation of sacred landscape architecture into ritual facilities using the synthetic semantic of architecture and monumental art (cenotaphs, garden sculpture, fountains). Memorial parks became a means of identifying specific places and events in space, thus preserving the memories of certain times. The location of memorial parks within cities turned them into one of the key city-forming elements of the urban environment. Being an integral part of community lives, gardens and parks appeared pursuant to both the material and spiritual needs of people and became one of the attributes of civilization.
The analysis of planning and dimensional-spatial methods in park construction helped classify them into types and identify their city-forming role from ancient times up to nowadays. Also, the authors could expose the memorial park transformation and adaptation processes depending on the changes to the social and economic formations.
The symbol is always more important than a genuine person or thing.
M. Pasturo.
Experimental Studies of the Cylindrical Mesh Shell Model
Authors: Siyanov A , Soshina T 
Published: March 2021

Abstract
Experimental studies of the effect of full and one-sided external load on a metal cylindrical mesh shell have been conducted. Regularities of stress and displacement distribution over the surface are recorded. The regions with the largest internal force factors and deformation parameters were identified. The values of the experimental critical load and the number of half wave of the form of stability loss are obtained. The risk of unilateral application of the load was established when the critical load was reduced and the maximum displacement exceeded.
Improving the Efficiency of I-Beams with a Thin Transverse Corrugated Web Plate
Authors: Tishkov N L , Stepanenko A N 
Published: March 2021

Abstract
The article describes a way to increase the stability of the transversely corrugated thin web plate of an I-beam due to the use of a double corrugation profile (multi-corrugation). The results of a numerical experiment (performed at LIRA-CAD software) of a large-scale models of beams with transversely corrugated web plates of various profiles (including double corrugation profile), with identical spans, cross sections, boundary conditions, loads, and material characteristics are presented. Distribution diagram of normal and shear stresses in cross sections, deflections, and the forms of buckling of corrugated web plates with safety factors for various models are presented. Based on the calculation results, a comparative analysis of the stress-strain state of the beam models was completed.
Modelling of Crack Development Trajectories in Continuous Thin-Walled Steel-Reinforced Concrete Beams under Moving Load
Authors: Averin A N , Averina T A 
Published: March 2021

Abstract
The scheme and its testing for calculating continuous thin-walled steel-reinforced concrete beams for constant and temporary load taking into account crack opening are described. The moving load is set in the form of a concentrated force applied with eccentricity with respect to the axis of the bar. For a bar experiencing bending and torsion deformations, analytical expressions for forces and displacements depending on the position of the temporary load are obtained, enveloping bending moment and bimoment diagrams are constructed. Based on the diagrams, the largest normal tension stresses were calculated at the lower points of the main beams and at the points of the reinforced concrete slab. An algorithm for calculating a continuous steel-reinforced concrete beam for a moving load is described taking into account crack opening. Trajectories of crack opening in a steel-reinforced concrete slab under a moving load are constructed.
Transport Framework of Urban Agglomeration: Structure and Features of Development
Authors: Sukhinin S A 
Published: March 2021

Abstract
Transport is an important element in formation and development of urban agglomerations. The predominance of road transport in transportation within agglomeration gives reason to argue that the basis of agglomeration transport framework is precisely roads. Roads and highways penetrate the agglomeration space, acting as communication lines, creating its road frame by which we understand the totality of road network and transport service facilities. As a special spatial formation the transport framework of agglomeration has its own structure, features and properties due to a variety of natural-geographical, historical, demographic, settlement, socio-economic factors. The structure, configuration and features of transport framework determine the efficiency of entire agglomeration, level and quality of life of its residents, and the attractiveness of agglomeration for placing business objects. The need to study the transport framework of agglomeration is due to the important function of integrator, which it performs in territorial organization of agglomeration, connecting all other elements with traffic flows. At the same time, the transport framework is experiencing certain problems, which is reflected in the development of the entire agglomeration. Their solution is possible in our opinion by improving the transport framework of agglomeration.
Improving the Safety of Pipelines in Protective Cases at Low Temperatures
Authors: Fedorov Y Y , Vasiliev S V , Savvina A V 
Published: March 2021

Abstract
Model experimental studies have been carried out and the cause of emergencies with pipes in protective cases used in the construction of pipelines has been identified. The design of a protective case has been developed, which excludes deformation or destruction of the pipeline when water freezes in the annulus. Model tests of the pipeline in the case, using polyethylene foam as an element that compensates for the expansion of water during freezing, showed complete exclusion of deformation of the pipeline during freezing. The developed design has shown its efficiency and possibility of widespread use to increase the reliability of pipelines in protective cases operating at temperature below freeezing point.
Light Spaces and Forms in the City Light Planning Structure
Authors: Karpenko V E 
Published: March 2021

Abstract
Artificial light is an effective and modern means of designing an urban environment, including architectural forms and spaces. Various functions and lighting concepts suggest the identification of the lighting nature of urban elements in the planning structure. Artistic and light parameters of forms and spaces can be measured using psychological and artistic compositional methods. Artificial light as part of the composition is used in optical and modern visual art, emphasizing its importance in landscape design, in revealing the semiotics of the city, in light landscapes formation. The analysis of artistic-psychological and comparatively estimated quantitative data of light forms and light spaces can be taken into account when creating a harmonious architectural and light environment. The theory of the city light-planning structure, lighting spaces and forms is given, the methods of their lighting on the embankments, in the historical part of the city are described, the mechanisms of their psychological impact and the measurement of subjective perception are revealed. The light-spatial parameters and lighting criteria are described. Variants and perspective proposals are put forward for creating light spaces based on the sum of the expressed light plastic of facades and the volumetric-spatial composition of buildings, landscape, light spaces as the intersection of communications and the harmonious interaction of light forms in the structure of the historic city centre. The reliability of the study can be provided by the earlier used “semantic differential” method.