bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and manufacturing of mimosa pudica inspired smart window and analysis of scale dependent constraints
Authors: Komaraju Bhavana , Battu Anudeep , Pavan Kumar K , Varadarajan Sudhir , Bingi Jayachandra
Published: September 2020

Bio-inspired design is the practice where the form, function and behaviour of natural entities at different scales used for developing sustainable technologies. During this process, scaling up and miniaturization play an important role. The successful implementation or achievement of bio-inspired features in engineering systems depends on the scale at which the inspiration is taken. Hence the constraint analysis in scale up and miniaturization of bio-inspired design is an important aspect to study. The work take up the mimosa pudica as a bio-inspiration for smart window technology, analyze w.r.t its micro and macroscale design features. Unlike the other works, the macroscale features of mimosa pudica are taken as inspiration and microscale phenomena (Water molecular flow based turgor pressure etc.) are replaced with macroscale viable phenomena (electronics and sensors..). The macro feature inspired smart window is demonstrated with multiple working states. Further, the constraint analysis in the scaling up process of bio-inspired smart window is presented. The analysis indicates the advantages w.r.t accuracy and responding time at the cost of high power consumption and also posts the requirements to achieve the trade-off. This work also emphasizes on the significance of scale based design & constraint analysis, and importance of scale in bio-inspired engineering.
An Alternate Method for Finding Optimal Solution to Solid Transportation Problem under Fuzzy Environment
Authors: Vidhya V. , Ganesan K.
Published: September 2020

In this paper we develop a new algorithm for the initial fuzzy basic feasible solution to a solid transportation problem with imprecise parameters. All the decision variables are assumed to be triangular fuzzy numbers. Using parametric form of triangular fuzzy numbers such as left fuzziness index, right fuzziness index, modal value and by using proposed algorithm we obtained the initial basic fuzzy feasible solution to the problem without changing to its crisp equivalent form. We further discuss the optimality by applying the modified distribution method. A numerical example is solved to show the effectiveness of the proposed algorithm.
Conceptual Model Analysis on Effects of Detain in Construction Industry by Identifying Various Causes - A Case Study
Authors: Alami Florance , Krishnaraj L.
Published: September 2020

In construction, the time extended further than the mentioned date in the document, or beyond the time decided on by the participants for the completion of a task is defined as the Detain. The study defines the main reasons and effects of detain in building sectors. Mind razing identified a variety of detained parameters in construction sector. In total, forty-six (46) variables were shortlisted from previews literatures to form part of the survey questionnaire and classified into nine (9) major parameters. Descriptive analysis, ranking analysis and simple percentages were used by SPSS software version 22 to analyze the data. Based on this research, the most contributing parameters are Contractor related parameters (Lack of interaction and synchronization between owner and contractor “86.6%”in Kabul and “73.3 %” in Chennai) Consultant related parameters (Poor site management & poor financial control on site “84.1%” in Kabul and “80.0 %” in Chennai); Owner related parameters (Selecting inappropriate contractors “76.8 %” in Kabul and “57.8%” in Chennai) participants selected and few advices were given to decrease and minimize detain in construction sector.
Visual Flow on Eye-Activity and Application of Learning Techniques for Visual Fatigue Analysis
Authors: Bhanu Priya D. , Jotheeswaran Jeevanandam , Subramaniyam Murali
Published: September 2020

All Smartphones have become a necessity rather than a utility. Not a single person can deny that our mobile phones go wherever we go. Phones were created as a means for more accessible communication over distance. The purpose of a phone has dramatically changed over the years by the technology advancement and the arrival of smartphones which provides many applications and make us stick to it. This study understands the correlation between the activity of eyes and flow level of the eye. Also, how the visual activity parameters are calculated will be discussed. This study enhances the understanding of visual fatigue caused due to the digital medium. Examine the subject’s eye flow level with smartphone and VDT utilisation. Besides, the application of learning algorithms, including machine learning/deep learning is massive with regards to analysing visual fatigue. The purpose of this study also going to discuss the application of both machine learning and deep learning on analysing visual fatigue caused by Digital Medium.
A study on mechanical and durability properties of coconut shell concrete using coconut fiber and sawdust
Authors: Prakash P , Anandh S , Sindhu Nachiar S , Gilbert Gilssy Mary
Published: September 2020

Sawdust was used as a partial replacement material for sand in coconut shell concrete and coconut fiber were also added with concrete to enhance the properties. The mechanical and durability properties studied are compressive strength test, split tensile test, flexural test, impact test and water absorption, volume of permeable pore voids, rapid chloride penetration test, sorptivity respectively. From the test conducted, the properties of coconut shell concrete with coconut fiber and sawdust gave a better result.
Urban Sprawl Analysis Using Remote Sensing Data And Its Impact On Surface Water Bodies: Case Study Of Surat, India
Authors: Sridhar M B , Sathyanathan R , Subramani R , Sudalaimathu Karuppasamy
Published: September 2020

Urbanization is the process in which population shifts from rural to cities or urban centers for an improved standard of living due to economic growth and development. As the migration rate increases, urban cities undergo major changes in land use and land cover which trigger several negative effects such as overcrowding, water scarcity, air pollution, loss of productive agricultural lands and forest cover. Remote sensing and Geographical Information System (GIS) are used for monitoring the emerging urbanization of the cities using satellite images. In this study, the land use land cover classification of Surat city has been studied for 26 years (1993-2019). The results showed that the urban built-up area in the city has increased by 175.2% over the years. In this study, the contemporary situation of surface water bodies of Surat city was examined by the intersection of urban land use areas and the digitized surface water bodies. The result reveals the reduction and disappearance of surface water bodies due to the encroachment of urban land-use. This study is done to raise the awareness paid for surface water management issues during the urban expansion process.
Calculation of three-layer composite beams using difference equations of successive approximation method
Authors: Filatov Vladimir , Gabbasov Radek , Quyen Hoang Thi Linh
Published: September 2020

Beams are considered the most popular bending elements used in building structures. With the load-bearing capacity and production characteristics, it is possible to use many different materials to combine them into beams to receive high economic-technical efficiency. Besides, because of the development of structural material industry, the manufacturing and construction technology, the form of beams is as diverse as composite wood beams, foundation beams, force-sensitive composite beams prior to installation grafting, steel-concrete combination beams. So there are many researches about solving the problems of multi-layer structures in general and multi-layer beams in particular by different calculation methods. In this paper, based on the theory of multi-layer composite rods and plates of A.R Rzhanitsyn the solutions of calculation analysis of three-layer beams that is subjected to discontinuous loads using difference equations of successive approximation method (MSA) are presented. The obtained results with good convergence show high accuracy of the numerical method with the use of difference equations of successive approximation method.
Non-linear optimization of frames with variable section stiffness of columns using Genetic Algorithm
Authors: Thuy Van Tran Thi , Trung Kien Nguyen
Published: September 2020

Recently, in structural engineering, many main elements in structural systems such as columns or girders are designed with variable cross-section for certain purposes. In addition, in order to determine the appropriate sizes or suitable shapes of structural elements for optimal volume of material under the effect of certain loading or with the given sizes of elements the structures can be subjected maximum loading, it is required to studied the optimization problem. This paper presents the non-linear weight optimization problem of frames with variable section stiffness of columns according to the strength, stiffness and stability criteria with the help of finite element method. The non-linear optimization problem is solved by the Genetic Algorithm. The calculation procedure of non-linear optimization of plane frames with variable section stiffness of columns is established and implemented using Matlab calculation programming software. From the results of numerical examples, the conclusions and recommendations will be proposed.
To the dynamically loaded reinforced-concrete elements’ calculation in the absence of adhesion between concrete and reinforcement
Authors: Tamrazyan A G , Popov D S , Ubysz A
Published: September 2020

This work is devoted to the methodology for calculating the compressed reinforced concrete elements under dynamic loading, which takes into account the lack of adhesion of tensile reinforcement to concrete. As experiments have shown, the lack of adhesion between concrete and reinforcement leads not only to a decrease in the bearing capacity, but also to a qualitative change in the strain diagrams’ shape in the sections. The calculations according to the current regulatory documents do not take into account the fact that the reinforcement does not adhere to concrete, as a result, it is difficult to determine the actual bearing capacity of the element. The dynamic impact of loads adds complexity to these types of calculations. This approach makes it possible to perform the calculation in the elastic, elastoplastic and plastic stages of work, while taking into account the absence of reinforcement adhesion with concrete in determining the height of the concrete compressed zone.
Finite-element analysis of plate stability under conditions of nonlinear creep
Authors: Yazyev S B , Chepurnenko A S , Lapina A P , Xuanzhen Song
Published: September 2020

Resolving equations are obtained for the finite element analysis of the stability of plates and shells with allowance for nonlinear creep. The issue of plate stability under creep process is investigated by the example of a round plate rigidly clamped along the contour with an initial deflection under the action of radial compressive forces. It has been established that for plates made of a material that obeys the nonlinear Maxwell-Gurevich law, there is a long critical load p
∞. When the load is less than the long critical (p < p∞), the deflection growth rate decays, i.e. buckling does not occur, at p = p∞ the deflection increases at a constant speed, and at p > p
∞, the rate of growth of the deflection increases.
Behavior of corrosion-damaged compressed reinforced concrete elements under dynamic loading
Authors: Tamrazyan A G , Mineev M S , Fedorov V S
Published: September 2020

The article discusses the issues related to the operation of compressed corroded reinforced concrete elements under dynamic (shock) impacts. The experimental data of the samples subjected to flow-accelerated corrosion are presented. Modeling of such samples was carried out by means of the Ansys software package. In this paper we present a static and dynamic calculation of the experimental samples in the Ansys software package.

The breaking load comparison of the samples obtained during the experimental tests and in the Ansys software package, which has fairly good convergence, is made. The comparison of the experimental and obtained as a result of calculation in Ansys diagrams of the corroded-damaged reinforced concrete element and tensile reinforcement concrete compressed zone deformation is presented. The values of dynamic hardening coefficient were obtained for the first time depending on the corrosion damage section’s length.
The energy method for calculating the cantilever strip bending flat form stability taking into account its own weight development
Authors: Yazyev S B , Zotov I M , Lapina A P , Chepurnenko A S , Vysokovskiy D A
Published: September 2020

An effective version of the energy method is recommended when calculating the rectangular cantilever strips for stability of a flat bending shape taking into account its own weight. The essence of this method’s variant is to use the Lagrange variational principle instead of the condition for the potential strain energy equality and the external forces work. The proposed approach makes it possible to perform the calculations’ machine implementation and take into account an arbitrary number of the series members. The solution to the problem for the cantilever beam is presented taking into account its own weight and the concentrated force action.
Calculation of Damage to Buildings and Structures by Lightning According to the Thunderstorms’ Visual and Instrumental Observations
Authors: Adzhiev A Kh , Gyatov R A , Kerefova Z M
Published: September 2020

The materials and construction of buildings and structures used should be linked to the number of lightning strikes per year. Lightning protection of buildings and structures should be based on the parameters of thunderstorms in the territory of the project design. Thunderstorm is one of the most dangerous meteorological phenomena. Both ground objects and aircrafts are affected by thunderstorm activity: airplanes and rockets. The main objective of this work is a comparative assessment of the buildings and structures impact by lightning, depending on the methodology for determining the thunderstorms duration in hours for the territories in the North Caucasus. The analysis on the basis of data from the thunderstorm direction finding net (TDFN) of the FSI “VGI” and data from weather stations has been performed. To solve this problem, a study on the relationship between the number of days with a thunderstorm and the duration of thunderstorms in hours for the territories in the North Caucasus has been performed on the FSI “VGI” (TDFN) data basis. In order to determine the above-mentioned statistical characteristics of thunderstorms and their variations in the North Caucasus, for the first time in Russia, the LS 8000 lightning recorder manufactured by “Vaisala” Finland was used.
The design criteria evaluation for the rigidity of the structure foundation with various models for moving the grillage and head wall
Authors: Degtyarev V G , Kozhenko N V , Bakhtamyan N A
Published: September 2020

Taking into account the nonlinearity of the soil during geotechnical calculation, including modeling the base stiffness, makes it possible to correctly determine the structures’ stress-strain state (SSS), as well as to consider their work in the base – foundation – structure system.
The work research of two-layer combined reinforced elements in pure bending
Authors: Zhurtov A V , Edokov R A , Khutezhev A Kh , Stas N N
Published: September 2020

The experimental-theoretical studies’ results on the work of two-layer combined reinforced elements with pure bending are presented. The full-scale tests of single-layer and two-layer elements with combined reinforcement showed that the vermiculite-concrete layer increases stiffness and crack resistance by 15–20%. The proposed numerical method for calculating the bilayer elements on bending forces provides high convergence (95%) with the full-scale experiments’ results.
Analysis of various factors’ influence on the interaction forces of the concrete element’s steel case and core
Authors: Peresypkin E N , Peresypkin S E , Tutarishev B Z , Tutarishev Z N
Published: September 2020

Pipe-concrete structures are effectively used in the high-rise and long-span structures’ construction. This complex material has the properties that distinguish them from the conventional metal and reinforced concrete structures. However, the wider use of pipe concrete in construction, despite a large number of studies, is constrained by the lack of documents governing the calculation, design, production process technology and rather significant discrepancies in the experimental data of various authors on determining the interaction forces of the concrete element’s case and core. This is explained by the influence on their size: the method of applying the load (axial or with eccentricity, to the entire cross section or only to the core), its action duration, the ratio of the wall thickness to the cross section size, deformability and strength of concrete, the ratio of steel and concrete amount in the cross section. In this paper, based on the solution of the Lame problem for a circular cylinder, we obtain the formulas for the interaction forces between the core and the case, taking into account various factors. The yield strength of the case steel and the ultimate deformation of the concrete core are accepted as the criteria for the structure’s strength. Axial compression is considered without loss of shape stability, i.e. with a structure length not exceeding the five cross-sectional diameters, which usually corresponds to the length of columns in civil buildings.
Determination of the ultimate load for centrally compressed concrete filled steel tubular columns based on the deformation theory of plasticity
Authors: Grigoryan M N , Urvachev P M , Chepurnenko A S , Polyakova T V
Published: September 2020

The article presents a methodology for determining the stress-strain state and breaking load for concrete filled steel tubular columns in a physically non-linear setting. The calculation is performed step by step, for each step in the load, the problem is reduced to a system of three linear algebraic equations. The results are compared with known analytical dependences, as well as with the results of calculations in a three-dimensional formulation using the finite element method.
Architectural bionics and the search for optimal solutions in the unique structures’ design
Authors: Mayatskaya I A , Yazyeva S B , Lapina A P , Davydova V V
Published: September 2020

The problem of the building structures’ optimization is considered in architectural bionic modeling on the bionic principles’ basis. The architects realize that the plastic of buildings can be completely arbitrary, but nature provides them with the best solutions. For this, it is necessary to study the structural laws of natural objects and use the ideas for both the structural elements and the entire structure when designing. For the further use of various materials in construction, it is necessary to take into account the variety of architectural solutions. Bionics makes it possible to find the most unusual in form and optimal in structure designs for the design of a wide variety of structures.
Experience in architectural renovation of the cultural objects and the monuments of historical heritage
Authors: Berdnik T O
Published: September 2020

The article explores the phenomenon of the architectural structures’ renovation, which are the objects of cultural and historical heritage. The renovation concept of an architectural monument located on the Black Sea coast of the Krasnodar Territory in the Russian Federation is given. An art history analysis of the artistic, compositional and stylistic features of the object’s architecture is carried out in the context of its belonging to the type of a country estate of the late XIX - early XX centuries. The design solution of the interiors, exteriors of the building and the surrounding area is presented. A historical reference is given on the building operation from the time of its construction until the decision on the need for renovation. The article describes the condition of the object before renovation, as well as those changes that have been made to the appearance of the building and its planning structure, which made it possible to give it the elite suburban housing function. The conclusion is made about the cultural significance and economic efficiency of the historical heritage objects’ renovation in the context of the tourist infrastructure development in the region.
The concept of the settlements’ urban linear spaces formation in the southern region of Russia (on the example of Taganrog street in Rostov-on-Don)
Authors: Meskhi B Ch , Evenko M G , Vorobeva A M
Published: September 2020

Modern urban development policy in our country is aimed at creating a comfortable environment for settlements. The Federal Program “Formation of a Comfortable Urban Environment for 2018-2022” adopted in the country, provides for a set of measures aimed at improving the quality and comfort of the environment in the settlements territories in order to improve the ecological state and the cities’ appearance. Such attention to the public space of the cities is determined primarily by the fact that they are the important urban development nodes, which generally determine the appearance of the city, its sanitary and hygienic indicators, aesthetic characteristics, etc.
Study of the residential structure’s development planning influence on the insolation regime and natural illumination of the territory
Authors: Slepnev P A
Published: September 2020

The problem of residential buildings’ insolation is one of the fundamental in the housing planning projects’ development. Currently, two normalized parameters are estimated in Russia: the insolation itself and the coefficient of natural light exposure. These two parameters together govern the planning decisions’ adoption, including from the standpoint of the premises and territories’ natural disinfection. At the same time, these two parameters make it possible to regulate the spot development and prevent the cases of standards violation. There are several generally accepted types of buildings characteristic of modern cities: group, perimeter, lowercase, free. Each type of building is characterized by its own layout of buildings. Accordingly, each scheme determines the insolation mode and natural illumination of buildings and territories. Mathematical analysis and full-scale experiment will allow to evaluate the advantages and disadvantages of the considered types of residential areas’ development. In addition to the planning structure, insolation and natural illumination of territories are affected by the number of storeys in the building. The higher is the number of storeys, the less are the considered indicators. Accordingly, when considering the issues of insolation and natural light, along with the planning structure of residential buildings, attention should be paid to the number of storeys in the building. The theoretical and field studies presented in this work will allow in practice, when developing the new planning solutions, as well as reconstructing the existing buildings, to adopt the type of residential planning that most fully meets the regulatory requirements for insolation and natural light.
Architectural symbolism in tradition and modernity
Authors: Astakhova E
Published: September 2020

The article considers the architectural form and its components: physical, artistic, symbolic forms. Symbolism in architectural form has been used since antiquity as a way of transmitting certain sacred information in an associative way. The symbolism of the architectural form has traditionally been addressed at several levels: digital / numerical symbolism; graphic characters; conceptually - planning and conceptual-spatial levels. Modern architectural objects partially use the traditional methods of symbolism and are more characterized by the use of associations, metaphors and direct imitation. All techniques are illustrated both by the existing architectural objects, classical and modern, as well as by the example of architectural competitions on space exploration Marstopia, Moontopia, Moon Trip.
The architectural environment authenticity preservation in the updating and renovating urban space context (on the example of the Rostov-on-Don city)
Authors: Sagalaev A.V.
Published: September 2020

The article discusses the aspects of maintaining the urban space authenticity in the territories’ updating and renovation context. The improvement process was examined by us from the point of view of the social stratification theories by Sorokin P. A., authenticity and the “spirit of the place” as the historical foundation of the Rostov-on-Don city, relevant for the city. The conditions of the city’s preservation historical image are considered taking into account the general actualization of spaces on the example of the renovation and capital works’ photo-analysis in Soborny lane, Sadovaya street, the parks “Osenny” and “Levoberezhny” as well as the design proposals of the linear park Temernik” Rostov-on-Don. Using the photo-analysis method of the territories “before” and “after” renovation, we were able to find positive trends in spatial changes. In our work, we draw attention to similar features of the city’s architectural fabric authenticity, which can be correlated with the “spirit of the place” united by the Rostov streets’ historical foundation preservation vector. We tried to form a conclusion about the updating possibility of the architectural space without losing its historical content. Through a description of the urban “fragment” and its positive changes. A number of modern and historical publications, as well as the informative works on the research topic have been used as the analytical and theoretical basis.
The identity of the medieval fortress architecture on the river Godlih and of the Humara settlement
Authors: Treiman J F
Published: September 2020

The article describes the scientific hypothesis about the architectural and spatial identity of a medieval fortress at the mouth of the Godlich river and the Khumarinsky fortification on the Kuban river. It was revealed that the planning structure as well as the architectural and spatial organization of these medieval monuments are similar and consist of three parts: the citadel, the fortress and the open settlement. The citadel was a monumental multi-tiered tower, surrounded by a courtyard and a fortress wall. The fortress along the perimeter was surrounded by a defensive wall, fortified with square towers in plan. The open settlement did not have artificial fortifications and was located in an inaccessible place in the immediate vicinity of the citadel and fortress. The architecture and construction of the walls and towers of both fortresses are made in the Byzantine construction culture traditions. The masonry of the fortresses’ walls and towers is a lining with shell-like rows of stones with a filling between them and stone fragments in lime mortar. Since the fortress at the mouth of the Godlich river was severely destroyed as a result of the Tuapse-Adler railway construction, it is possible to rely on the identified analogue to carry out a hypothetical reconstruction, which will serve as a theoretical justification for its restoration and museumification.
The effective air exchange organization scheme selection in the working area at the asbestos-cement products manufacturing enterprises
Authors: Stefanenko I V , Burkhanova R A , Azarov V N
Published: September 2020

The article explores various schemes of air exchange organizing in the molding shop of an enterprise for the asbestos-cement product’s manufacturing. To find the air exchange value, a system of balance equations for the workshop and the working area is proposed and solved, characterizing coefficients are determined. Based on the data on the disperse composition of dust and aerodynamic characteristics, the optimal air exchange scheme for the enterprises producing building materials is proposed.
Volumetric discretization element with invariant displacements approximation in the SSS numerical analysis problems for the building structures
Authors: Klochkov Yu V , Nikolaev A P , Gureeva N A , Sobolevskaya T A , Kiseleva R Z
Published: September 2020

The article describes the sought quantities invariant approximation method in relation to the volumetric discretization element in the form of a parallelepiped with the main nodes located at its vertices. The displacement vector components and their partial derivatives of the first order were selected as the sought-for unknowns of the volume discretization element. An approximating expression when implementing the invariant approximation technique is written for the displacement vector of an element inner zone point and not for components of this vector isolated from each other. The approximating expressions obtained on the sought quantities’ invariant approximation basis contain the curvilinear coordinates system parameters used. The discretization volume element compatibility is improved due to the use of Lagrange multipliers in additional nodes located in the middle of the parallelepiped bases’ edges. The Lagrange correction factors ensure the displacement vectors normal components derivatives’ equality along the normals to the element base edges’ midpoints. The expanded stiffness matrix and the column of the volumetric discretization element nodal forces are formed by minimizing the conditional Lagrange functional.
The numerical geometry optimization of the spatial structures’ nodal connector made of a massive part
Authors: Alpatov V Yu , Balzannikov M I
Published: September 2020

Many elements of spatial trussed structures are converged at the nodes. The structural assembly operates in a difficult stress state. It is possible to study the distribution of stresses inside the nodal connector, which is a massive part, using the calculated software systems. The authors performed a study of the MARKHI system node’s stress-strain state, analyzed the surface stresses level and stresses inside the nodal connector.
Effective modules of a layered elastic creep medium with power creep kernels
Authors: Bobyleva T N , Shamaev A S
Published: September 2020

The paper considers the question of constructing the effective characteristics of a layered composite material when periodically repeating layers consist of an isotropic elastically creeping material. For the elastic composites, such characteristics are well known and can be obtained explicitly. In this paper, the effective characteristics of the layered elastic-creeping composite are obtained explicitly when the creep kernel are the power-law functions. The elements of the compliance matrix are presented as the sum of the terms corresponding to the instantaneous elastic compliance, unlimited and limited as the loading time increases due to the creep of the composite individual phases.
Hamiltonian approach to the problem of modeling the hybrid system’s dynamics in air flow
Authors: Tymoshenko D V , Ilyukhin A A , Klovo A G
Published: September 2020

The dynamics problem of a hybrid mechanical system modeling the behavior of a wing in an aerodynamic flow is investigated. The research method is based on a kinetic analogy between the elastic rod pendulum oscillation and plane deformation problems, which makes it possible to bring the deformation equations system to a Hamiltonian form.
The project decisions’ assessment algorithm for the foundation pit fencing based on the Theory of Active Systems
Authors: Zheglova Y G , Titarenko B P
Published: September 2020

Currently, a lot of new construction is underway in the large cities and megacities territories. Large residential complexes and shopping centers are erected at the sites of former industrial zones and factories. The issue of the accidents in foundation pits arising from the errors in their barriers’ projecting has recently been an acute question. And this is directly related to the fact that construction has to be carried out in very difficult straitened development conditions with the presence of existing utilities and underground facilities. The main designer’s task is the selection of an optimal project solution. Any project decision for the foundation pit barrier is characterized by both the technical characteristics, in particular the materials used, and its construction cost. Therefore, the designer faces a difficult question of the price and quality ratio for this project decision. And it is complicated by the fact that the specific engineering and geological conditions imply the possibility of various project decisions for the foundation pit fencing and the materials corresponding to the calculations results for the limiting states. This paper describes in detail the methodology for assessing the project decisions for foundation pit fencing and the choice of the materials used in barriers’ design based on the active systems theory.
The Analytical Methods for Modelling the Two-Dimensional in the Open Water Circuits Development
Authors: Kokhanenko V N , Burtseva O A , Evtushenko S I , Kondratenko A I
Published: September 2020

The basic system of non-stationary two-dimensional open water circuit motion equations, which does not contradict the previously known system for a stationary circuit, is obtained.
Methodology for the selection of the integrated development territories for the multi-story residential building construction with the eco-standards implementation
Authors: Sheina S G , Panasenko M V , Fedorovskaya A A
Published: September 2020

In modern conditions, the tasks of transition to the territorial sustainable development are complex and cannot be reduced only to the sectoral issues. The solution of the tasks set must be based on taking into account the natural environment development laws, as well as the laws of the public institutions’ development and the economic mechanisms development. An economic policy with an analysis of the state of the Rostov Region economy sectors is presented in the Strategy for the Socio-Economic Development of the Rostov Region 2020-2030 (hereinafter referred to as Strategy 2030), which also considers the key trends in the construction industry. According to Strategy 2030, the Rostov Region, according to many indicators of the construction complex, is consistently among the leaders in Russia. The volume of work performed by the type of economic activity “Construction” is steadily growing. The Don region is in the TOP-10 of the constituent entities of the Russian Federation with the maximum housing commissioning volume.
Method for calculating the garret window light transmittance coefficient at clear sky CIE
Authors: Guketlov Kh M , Khachetlov H A , Kibishev K A
Published: September 2020

The method for calculating the anti-aircraft lamps’ transmittance, which makes it possible to take into account the brightness distribution dynamics of the clear sky CIE over time, depending on the Sun position in the sky has been developed. The proposed method will significantly increase the natural illumination calculating accuracy in the spaces with garret windows in the daily and annual cycles.
Determination of modeling conditions for the strip foundation reinforcement construction by the method of bringing the foundation plate with fixed formwork in the chute experimental studies
Authors: Subbotin V A , Subbotin A I , Skibin G M , Subbotin I A
Published: September 2020

The article discusses the conditions for creating a model for conducting experimental studies in a chute of a patented reinforcement design of existing strip foundations. It is proposed to simulate and investigate the effectiveness of the new construction of the strip foundation reinforcing, allowing to take into account the rheological processes in the soil base when carrying out the measures for structural reinforcement, using a shaped sheet in the conjunction with monolithic elements. Based on the rules of modeling and similarity theory, it is proposed to determine the optimal conditions for experimental modeling of a solution to strengthen the existing monolithic reinforced concrete strip foundations by working together with a monolithic reinforced concrete slab, divided by a shaped sheet in height into two parts (upper and lower) with the injection wells for the hardening mortar intrusion directly under the fixed formwork from a shaped sheet.
Automation identification of construction work and structural elements in BIM development
Authors: Tyurin I A
Published: September 2020

With the massive transition of construction projects to information modeling, the question of the design work automation arises. For decades, design engineers together with design automation engineers, have improved the two-dimensional drawing system, automating all possible routine operations, but with the widespread introduction of information modeling technologies, most of the developments in the field of automation cease to be relevant. The main objective of the study is to determine the priority tasks of design automation using the information modeling technologies. As a result of the study, the automation tasks were identified and a methodology for solving them at the design stage using the information modeling technologies, was proposed. The research results described in the article allow the identification of construction work and structural elements, increase the information model elements’ detail level and perform the resource calculations in an automated mode.
Coordinate support of geographic information space
Authors: Bobkina V A , Arseniev D.M. , Zhiltsova A.V.
Published: September 2020

Today, the transition of mankind to the information society era is becoming an important state problem. Coordinate support of the space around us, timely and high-quality recording of the changes taking place in it, a thorough results’ analysis and reflection is ensured by geodetic technologies, and their innovative development, continuous improvement ultimately contribute to the successful and dynamic development of modern society. However, today we are witnessing contradictions and inconsistencies between the technological geodetic processes and the regulatory documents governing the methodology for performing geodetic work to support various sectors of the economy. To everyone’s surprise, the existing instructions have not been revised since the last century and do not include the use of modern digital technologies for geodetic activities. This methodology should include a global process for the search, collection, storage, processing, including analysis and distribution, and as a result, the information provision concerning the objects and processes to the end user.
Alternative navigation systems use for satellite positioning in Russia
Authors: Yakovlev V V , Korzhenevskaya I V , Kirilchik L F
Published: September 2020

The article provides a comparative analysis of the joint application and accuracy of determining the locations by GLONASS, Galileo, BeiDou satellites, obtained from the navigation messages and available forecasting algorithms.

Nowadays the high-precision satellite definitions are based not only on the two-frequency measurement mode use, but also on the information inclusion from various existing satellite systems in processing [1,2]. Practical experiments performed in 2016 at latitude B=47° and presented in [3], confirmed the advantages of the GPS and GLONASS satellite systems’ joint use. To date, alternative GNSSs have appeared - the European “Galileo” and the Chinese “BeiDou”, the capabilities’ studies of which are not given due attention to. Therefore, we will try to compare the location determination accuracy by GLONASS, Galileo, BeiDou satellites received by the navigation messages, by comparing them with the exact data provided by the International GNSS Service (IGS), as well as with the available GNSS prediction algorithms available on the satellite observation equipment manufacturer Trimble site.
The patterns’ changes study in the proportion of simultaneously stopped cars in the city’s road network
Authors: Topilin I V
Published: September 2020

The article presents the results of the theoretical and experimental studies of the patterns’ changes in the proportion of simultaneously stopped cars in the city’s road network. Ergodicity of the traffic flow, i.e. it is shown that the studied parameters measured by a test car for a sufficiently long period of time are equal to the average indicators of many cars located in a given area of the road network in the same time period.
“Green” technologies in housing: the experience of Russia
Authors: Bachurinskaya I. A. , Vasileva N.V. , Yudenko M.N. , Nikolikhina S.A.
Published: September 2020

In modern economic conditions, the environmental factors, including the housing construction, are becoming increasingly important. There is no universal model of economic development in the world that does not disturb the balance of economic, social and environmental interests. Nevertheless, scientists from many countries are working in this direction, realizing the scale of the serious negative consequences of the existing economic development model functioning. The development of housing on the basis of innovative technologies of «green» construction will allow talking about a new model of sustainable socio-economic development, taking into account the economic, environmental and social factors. The article focuses on innovation in the green building technologies’ use. A comparative analysis of the foreign and Russian national rating systems for the buildings’ assessing is presented, the advantages of «green» construction, determined by environmental friendliness and energy efficiency, are highlighted, the pros and cons of “green” construction are considered. The examples of innovative “green” technologies in housing construction in Russia are given. Special attention is paid to the development and analysis of the institutional norms governing green construction in Russia at the present stage. The author presents the position of calculating the integral effect (IE) due to the use of innovative technologies and building materials at the stage of evaluation and implementation of an innovative construction project in green housing. In conclusion, the possible ways of activating the processes of “green” housing construction using innovative technologies are given.
Development of a methodology for assessing the integral effectiveness of an investment project for the camping site construction in the coastal zone
Authors: Tsopa N , Akimova E , Malakhova V , Akimov S
Published: September 2020

The article analyzes the main factors for the campsites placement, as well as the classification of campsites by type. The analysis of the regulatory framework for the camping operation in the coastal zone on the territory of the Russian Federation. The assessment of the main factors for the auto camping location, as well as the advantages of auto tourism in comparison with the other types of tourism. An economic examination of the investment project effectiveness for the construction of a camping site was conducted on the basis of such indicators as: net present value, profitability index, internal rate of return and payback period. In the process of managerial examination of the investment project for the construction of a camping site with a hotel and entertainment complex, an assessment of the project management effectiveness was carried out. A methodology for assessing the integral effectiveness of an investment project according to the following criteria of functional efficiency is proposed: economic, organizational, social, environmental, legal, energy, technological, psychological, political and ethical.
A model for predicting the design work timing using an integrated moving average (ARIMA)
Authors: Zelentsov L B , Mayilyan L D , Pirko D V
Published: September 2020

The article discusses the issues of automating the company standards’ development for labor consumption taking into account the projects’ uniqueness and the significant impact of the human factor on labor productivity, which can be indirectly measured at the stage of operational management with the pace and work intensity. In the proposed method, due to the higher frequency of information retrieval and the use of the integrated moving average model (ARIMA), at the early stage of the design work, it is possible to identify and predict their possible deviations from the planned time parameters, and then based on this, analyze and make the corrective management solutions to optimize their time parameters. This approach, combined with the leading design specialists’ expert evaluations, makes it possible to set the planned values for the complexity and duration of work, which are then specified and updated during the specific project’s implementation. The use of the methodology is considered in the context of the application for the collection and processing the large amounts of information of an intelligent design management system (IMS “Design”) developed at DSTU.
Logistic aspects of the apartment buildings’ heat management in St. Petersburg
Authors: Tereshkina T R , Verstina N G , Semyonov A S
Published: September 2020

Some economic aspects of heat energy consumption in conjunction with the feasibility assessment of applying the logistics approach to the buildings’ heat supply are considered in the article. The regression model for calculation of the expected energy consumption is offered. The model allows to consider the influence of various factors and to increase the objectivity and reliability of the apartment houses data for evaluating the heat consumption effectiveness. The inhabited residential district “Baltic Pearl” located in Kwasniewski district of St. Petersburg was chosen as the research subject. According to the authors, management of apartment houses heat consumption with the use of the regression analysis will allow to increase the accuracy of through scheduling and will provide control over effectiveness and reliability of the consumers’ heat supply processes. That in turn will promote the logistic coordination of the material, information and financial flows as well as the optimization of the thermal energy movement parameters, taking into account ensuring environmental and economic security of Russian regions.
Public private partnership as a housing development tool
Authors: Shvydenko N V , Axenov A A , Vinogradova E V , Seferyan L A
Published: September 2020

The article discusses the prospects for the public-private partnerships’ (PPP) development in relation to solving the housing problem. The thesis on the need to form the organizational, legal and financial foundations of the PPP mechanism for the mass construction of affordable, comfortable and ecological (“green”) housing, including integrated territorial development, is consistently put forward. The scientific results of the study include the strategic objectives’ formulation for improving PPP in housing construction in the Rostov Region, the rationale for creating a coordination center for supporting the PPP projects, the proposed algorithm for selecting the PPP projects based on a criteria system for evaluating the effectiveness of green housing projects, including the environmental, social and economic indicators.