bluuebunny/crossref_metadata_2025_split huggingface dataset:
Selection of well screen parameters as aspect of water well design
Authors: Akulshin A A , Shcherbakov V I , Uchaev A S 
Published: December 2019

Abstract
This paper addresses an essential problem within the scope of the issues of optimum design, construction and operation of water supply systems and their elements. The water well is the core element of the groundwater intake structure. The quality of water well design and construction workmanship are pivotal for successful operation of the intake structure in general. Poor well design and errors in well construction result in malfunctioning of the whole water supply system. Selecting an appropriate water well screen to conform to specific geological conditions and to ensure the longevity of the well structure itself is a complicated engineering problem. The estimation of well screen parameters covers such dimensions as length, diameter, open area ratio and aperture (slot) size. Those characteristics must be determined taking into account that the entrance velocities must not exceed the entrance velocity limit for a particular screen, i.e. V
ent ≤ V
lim.
Comparing pipelines made of different materials for replacement of old on-site pipelines of Kinel pumping-filtration plant
Authors: Gorshkalev P A , Chernosvitov M D , Nikitina D S 
Published: December 2019

Abstract
The article focuses on the pumping-filtering plan (PFP) in the town of Kinel and describes the pipes of various diameters made of modern materials. The authors compare characteristics of pipelines produced by four different manufacturers to choose pipeline materials which are most suitable for this particular pumping-filtering plan. The comparative analysis of the pipeline materials makes it also possible to decide on several options for use in reconstruction. The authors further consider characteristics of materials from which pipelines for water supply and heating systems are made. They describe metallic materials (steel, copper, zinc, stainless steel) and polymers (polyethylene, polyvinyl chloride, polypropylene and fiberglass). In the end the researchers share their experience and explain how water supply pipelines made of different materials operate in normal working conditions.
Study of mutual work of Coanda channels in local ventilation systems
Authors: Kireev V M , Goltsov A B , Alifanova A I 
Published: December 2019

Abstract
Today, the Coanda effect is widely used in many technical areas, in particular, ventilation systems. However, this effect occurs only when a certain combination of many factors affecting the moving stream. The occurrence of the Coanda effect is unstable and is easily disturbed when interacting with another air flow of a non-coincident trajectory. The article describes the method of air supply, which consists in the use of two channels arranged in series in which a stable Coanda effect occurs. The arising effect is explained by the interpretation of the fundamental laws of hydrodynamics. The article presents the results of an experiment on the use of the proposed solution in the recirculation system of aspiration, with the use of which there was an increase in the efficiency of work by 51%
Modelling and optimizing engineering network systems
Authors: Lvovich I Ya , Preobrazhenskiy A P , Choporov O N 
Published: December 2019

Abstract
This paper is connected with the necessity of problem orientation of invariant methods of mathematical modelling and numerical optimization on formation of effective engineering network systems with cluster structure both at the stage of their functioning and development. In this regard, several problems are considered. Optimization modelling of engineering network system efficiency with cluster structure is carried out. Numerical optimization of engineering network system resource efficiency is demonstrated. Numerical optimization of structural and resource (combined) efficiency of the engineering network system is carried out. The results of the paper can be useful in choosing an effective implementation of the complex components of engineering networks on the basis of a computational experiment, to carry out a cluster structuring of the engineering network system of the network system by private indicators and integrated assessments of the efficiency of the functioning of its constituent objects.
Use of compressed gas heat utilizers in gas-compressor units
Authors: Medvedeva O N , Astashev S I 
Published: December 2019

Abstract
The study considers the possibility of using the Ranque-Hilsch vortex tube in the construction of a heat exchanger for heating fuel gas to ensure normal operation of the gas-pumping units used to pump gas into the underground gas storages. According to the results of the gas-hydrodynamic and thermal methods for calculating structural elements, a final equation was obtained describing combined operation of the vortex tube and heat exchanger. The calculation method allows taking into account the impact of the main temperature and design parameters. The results of technical and economic calculations and thermal modeling based on the SOLIDWORKS program make it possible to judge the effectiveness of the proposed design.
Study of factors affecting reliability and efficiency of heat supply system
Authors: Biryuzova E A 
Published: December 2019

Abstract
Reliable and uninterrupted supply of heat to consumers is the most important task of the heating system. Due to the connection to the heat network of a large number of dissimilar consumers, the heat supply system operates year-round. Damage to heat networks can lead to disconnection of consumers, disruption of internal engineering systems, and reduction of their operation parameters, which can be dangerous, especially during the heating period at low outdoor temperatures. To ensure the reliability and efficiency of the heat supply system, it is necessary to fulfill all the requirements of the technical operation rules, conduct timely rounds and inspections and identify damage to the heating network at an early stage. It is also necessary to identify factors affecting the reliability and, consequently, the efficiency of the heating system, identifying “risk zones” by the magnitude of damage, based on the results of the calculation. As well as the development of measures to identify and prevent failures in the heating system.
Automated damping tank of sewage pumping stations
Authors: Skibo D V , Tolstoy M Y , Chizhik K I 
Published: December 2019

Abstract
In this paper, we consider the problems of operating facilities of the wastewater system. The technical equipment of the existing sewage pumping stations on the territory of the Russian Federation was analyzed and evaluated. The analysis of the regulatory and technical documentation and environmental standards governing the procedure for the discharge of wastewater from settlements in the Soviet Union during the period 1962-1985 has been carried out, and design solutions of this period have been compared to modern environmental requirements. The factors affecting the operation of sewage equipment are determined, taking into account its design capabilities and the actual state in the development of the urban environment. The innovative solution “Automated damping tank of sewage pumping stations” is presented as an additional structure for optimizing operating modes and improving the reliability of sewage pumping stations, as well as environmental protection. The conditions for the adaptation of innovative development in the technological process of existing wastewater systems are determined.
Treatment of waste and drainage water by biosorption method in Voronezh region
Authors: Akulshin A A , Shcherbakov V I , Kulmedov B M 
Published: December 2019

Abstract
This paperwork studies a biosorption method in waste and drainage water treatment in the Don river basin under Voronezh climate conditions. The research question is: how an effective biosorption method in the Voronezh region. In this experiment Eichhornia (water hyacinth) is used as a biosorbent plant and the authors analyze the removing of some contaminants with eichhornia from wastewater. The experiment took place in the Rozhdestvenskaya Khava village of the Novousmansky district in the Voronezh region. According to experimental parameters in a period of 30 days, the effectiveness of this method is examined. An experiment is compared with similar previous experiments. Finally, at the end of this article the authors list conclusions and some recommendations according to the results of the experiment.
Optimal design of foundations by means of nonlinear calculation methods
Authors: Dezhina I Yu 
Published: December 2019

Abstract
This paper proposes using the defining equations from the theory of adaptive evolution of mechanical systems (which is based on the variational principles of nonlinear structural mechanics) to design the shape and size of foundations. It presents an expression for finding the potential energy of a system and the deformation energy density, as well as the variational Lagrange equation. The paper formulates a nonlinear boundary problem solved by finite-element analysis. The solution imposes a constraint on the modulus of elasticity to take into account the physico-mechanical properties of the materials. A calculation algorithm and an ADPL program are written for ANSYS. The paper also presents a solution to the problem of finding the rational foundation shaped for the case of plain strain. The solution-derived rational foundation shape is shown. The authors plot the stresses and energy densities as a function of evolution at the onset and finish of iterative processes. Note that the resulting foundation shape is more stable, more accurately positioned in the soil, and can carry a greater load compared to more conventional shapes.
Forecast of settlement of single pile based on hereditary creep
Authors: Sychkina E N 
Published: December 2019

Abstract
The various calculation models are proposed in the literature for the purpose of description the creep behavior of soil bases. The objective of the paper is to develop an algorithm to predict long-term settlement of piles based on the rheological deformation model using Koltunov’s creep kernel. The paper discusses the results of single pile tests on weathered claystones and sandstones. Based on experimental results and theoretical study the author developed an automated algorithm for the calculation of settlement of pile on weathered claystones and sandstones. The following tasks are solved: 1) to describe the research technique; 2) to analyze the results of testing single piles; 3) to perform numerical calculation of settlement of piles; 4) to describe the capabilities of the developed algorithm for the calculation of pile settlement; 5) to compare the results of field tests, numerical simulation and calculation of the proposed method; 6) to state conclusions. The result shows that the proposed method is an excellent option for identifying the parameters of creep core for the prediction of long-term settlement of piles on claystones and sandstones.
Assessment of operating environment of concrete lining of sewage collector tunnels
Authors: Kulikova E Yu 
Published: December 2019

Abstract
The most important task in the field of design and construction of urban underground structures is the durability of their lining, which is a failure-free operation of the structure for a given period at a minimum cost of its construction. The quality of building processes, service life of underground structures and capital costs depend on the type of lining and technology of its construction. In this paper, on the basis of collector tunnels examinations the conditions of their work were revealed. Studies showed that the failure of the lining of sewers or its partial destruction occurs under the influence of the following factors: water-abrasive wear of the tunnel tray; gas and chemical corrosion, caused by the aggressiveness of the media flowing through the tunnels; biological corrosion; leaching of free lime from concrete under the influence of external groundwater, etc. It is revealed that the collector tunnels are subject to erosion of the tray associated with the abrasion effect of solids characteristic of the masses flowing through the tunnel. The effect of abrasives is exacerbated by the presence of “fistula”, cracks and chemical effects, which leads to weakening of the material and the tray design.
Comparative analysis of stability of embankment on the basis of torsional ring shear test
Authors: Sobolev E S , Morev D S 
Published: December 2019

AbstractDesigning slopes and embankments is an important geotechnical stage in the framework of industrial, civil and transport construction. For analytical and numerical stability calculations for the first limiting state, soil strength parameters are required, obtained, as a rule, based on the results of field and laboratory studies. Currently, a significant number of methods and equipment for soil testing for shear have been developed. In this paper we focus on the method of testing of cohesive soils under torsional shear ring. It is believed that this type of shear tests most accurately repeats the mechanical process observed during the destruction of slopes and embankments with the formation of fixed cut surfaces and taking into account large shear deformations. This paper contains information on the design of an experimental instrument for a ring (cylindrical) shear of cohesive soil samples. The processing of the results of torsional shear with different speeds is presented, the parameters and methods for finding them. The main purpose of the tests - determination of residual strength parameters: the angle of internal friction and cohesion. Examples are given of using the parameters obtained during tests of a torsional shear for numerical simulation of embankment from cohesive soil.
Consideration of parameters of underground structures interaction with soils when solving geotechnical problems
Authors: Ter-Martirosyan A Z , Sidorov V V , Almakaeva A S 
Published: December 2019

Abstract
The article is devoted to determining the influence of the strength reduction factor on the interaction that occurs between the soil mass and underground structures. The objectives of this paper are the study of the strength characteristics at the contact of the soil and the material of the structure, the calculation of the strength reduction factor and application it in the numerical simulation of various geotechnical problems. Strength characteristics are obtained on direct shear apparatus. Concrete is used as construction material. The strength reduction factor is calculated as the ratio between the limit shear strength of the soil-concrete and the limit shear strength of the soil-soil. The results of numerical simulation show that when using interface elements and reducing the strength properties at the soil-concrete contact, the displacement of structures, as well as the forces arising in them, will change compared to cases where their interaction is not simulated. In reality, at the contact of the soil mass and underground structures there is a gap and slippage, and the use of interfaces allows more accurately taking into account these processes.
Statistical analysis of field measurements during the excavation of mine workings and their assessment
Authors: Yatimov A J , Yatimov T A , Yatimov U A 
Published: December 2019

Abstract
The article describes the production experience and a static analysis of the results of field measurements during the excavation of mine workings by contour blasting. A decision to perform field measurements during excavation and a statistical analysis of the results is made in order to assess the possibility of their use for normalization. The high degree of correspondence of the actual distribution of the results of field measurements to the normal law makes it possible to successfully use all the statistical characteristics of the theoretical distribution in analytical studies and in solving problems of improving technology and normalizing using the contour blasting method. The bulk of the results of downhole measurements of the parameters of contour blasting is in a narrow range of two standards ẋ ± Sx
which allows us to further consider these ratios as criteria for the development of regulatory tolerances for the execution of a Blasting Pattern (BP) that provides practically acceptable contouring accuracy and the quality of the newly formed surface space.
Investigation of possibilities of automated design of bolted connections in nanoCAD editor for building structures
Authors: Kuvshinov N S 
Published: December 2019

Abstract
The article discusses the use of the Russian editor nanoCAD, replacing foreign editors AutoCAD and Autodesk Invenor, for computer-aided design of bolted connections in building structures. It is shown that there are various means for computer-aided design. These include the Mechanics tab and the Bolted Joint tool from the “Design” group, which after calling and specifying the starting and ending points of the connection, opens the “Fastening Details” dialog box. The latest lists bolts, made according to USDD (Unified system of design documentation) standards. Changing the diameter of the bolt metric thread, the type of washer and nut, the authors carry out a preliminary automated selection of the connection, based on the dimensions of the parts to be joined in building structures. If there are no necessary connection components in the “Fastening details” dialog box, they are selected from the Editor’s Element Base in the “Part selection” dialog box. Optimization and refinement of the parameters of pre-designed connections is carried out on the Tab Table parameters of the dialog box “GOST 7796–70 Isp. 1, 3, 4”. For the final check, the Calculation tab and one of the options, the design schemes that are opened in it, are used.
Developing professional competences in training construction engineering specialists
Authors: Dubovikova E P 
Published: December 2019

Abstract
The article considers the possibilities of developing general and professional competences in students trained under the engineering specialties in an institution of higher education. Modern universities aim at developing general and professional competences, which are characteristic of the future professional activities of graduates. The article notes that training should result in forming soft skills and professional competences in the field of construction, in compliance with the requirements of FGOS VPO 3+. Theoretical basics of the optimal training of engineers in the context of the competency-based approach are described. Obviously, there is a need for training competitive specialists in the field of construction, capable of working in modern economic environment, based on the integration of the educational process and production. A future specialist must be able to successfully fulfill the tasks of their professional activity, and that means that while still studying they need to acquire both non-technical and professional competences, which will facilitate their social mobility and stability in the labor market.
Mounting clamps of building constructions
Authors: Slabinskiy A I , Lebedev S G 
Published: December 2019

Abstract
The article considers an innovative mounting clamp, which allows creating fundamentally new dismountable building constructions, engineering structures and outfits. While considering different methods of structural morphology, the article geometrically interprets the space-planning and technology requirements set for the framework of the designed building surface. The whole complex of the research, development and engineering works was performed, and it confirmed the proposed performance characteristics of the innovative mounting clamp – ball clamp. In the course of works a number of analogs of mounting clamps used in the constructions’ assembly were analyzed, their disadvantages were determined, and an innovative mounting clamp – ball clamp – was engineered. The advantages of the ball clamp as compared to its analogs were confirmed by the computations and tests performed at the laboratory of SUSU (NRU). Using the 3D computer modeling allowed creating a new design of the ball clamp manufactured by the cold-forming method. The 3D modeling provided a possibility to develop the design documentation and make preparations for series production of the ball clamp, as well as improve the capacity of its manufacture and considerably reduce the prime cost.
Geometric modelling of building forms using BIM, VR, AR-technology
Authors: Tretyakova Z O , Voronina M V , Merkulova V A 
Published: December 2019

Abstract
Modern conditions set new tasks for designers and impose previously not arisen requirements. Along with the design, an important factor is the further presentation of the construction project to the potential consumer. The use of modern VR and AR technologies allows us to bring several advantages to the design that complements the living, real world with digital models. Therefore, there was a need to change the methods of teaching the design for students of construction, considering these factors. Purpose of research - to create a complete information model of the building with the help of computer-aided design, as well as the research of the impact of augmented reality technologies on the design conditions and presentation of the project. Method of research: observation, comparison, and analysis of the results of research of information and computer technologies, observation, comparison and using the experience of the university. The article presents the positive results of creating an information model of the building with the help of graphic programs. Traditional and progressive methods of design, new opportunities of VR and AR-technologies are considered.
Architectural education: translating internal potential into external actual
Authors: Davydova O V 
Published: December 2019

Abstract
The interrelations of economic development waves with waves of thinking, perception, understanding and processing of information for new architectural concepts are considered. A model is presented for translating the internal potential into the external relevant in the educational process using the forms of full-time and distance, traditional methodological support and digital opportunities. Self-assessment of the results of education - internal and external increments, through self-assessment of cognitive (knowledge), creative (creative), organizational (managerial), communicative, value-semantic competences, helps self-determination in what you love (passion), what the world needs (purpose), what are you good at (vocation) and for what do you get money (profession). The methodology of the discipline “Compositional modeling” in solving the problems of critical regionalism of modern architecture is considered on the example of the theme “Russian architecture from antiquity to the Middle Ages”
Improvement issues of architectural solutions of buildings and structures for botanical gardens in context of green economical aims
Authors: Vavilova T Ya 
Published: December 2019

Abstract
In Russia, the ways of increasing the socio-economic role of natural protected areas actively investigated. The main directions of improvement of their infrastructure are considered. They relate to the following tasks of the “green” economy: preventing the loss of natural capital, improving the quality of life, resource conservation, ecotourism development, etc. In the course of work, Russian and foreign approaches to building design and to the improvement of sites of institutions for natural protected areas were studied. By the botanical gardens examples, the possibilities of increasing the scientific and consumer properties of the territories researched. Recommendations for the formation of a diversified nomenclature of visitor centers are given. The author draws a conclusion about the need to develop representative technical standards and regulations for urban planning and architectural design for the main categories of natural protected areas.