The impact of restrictive pedestrian barriers on road safetyD.V. Khodeev1, Department of Industrial and Civil Construction, Associate Professor, Cand.Techn.Sci.
S.Yu. Surnenkov2, Department of Industrial and Civil Construction, postgraduate student
R.A. Zelenov3, Department of Industrial and Civil Construction, student
1,2,3«South-West State University», Russia, Kursk
1assistentproekt@yandex.ru;
2surnenkov2015@mail.ru;
3rodio26052018@gmail.comAbstract. The article discusses the problems of deterioration of pedestrian visibility at pedestrian crossings. Examples of reduced visibility under certain conditions are considered. Some mechanisms of visual perception of drivers are described. Options have been developed to increase the visibility of pedestrians at pedestrian crossings equipped with pedestrian restrictive fences by changing the installation scheme of fences as well as the use of certain types of fences.
Key words: road maintenance, road repairs, restrictive fences, visibility, road safety.
A systematic approach to managing the life cycle of a construction project based on foreign experienceK.S. Petrov1, Department of Urban Construction and Management, Senior Lecturer
V.I. Firsov2, Department of Urban Construction and Management, graduate student
I.A. Chernyavskiy3, Department of Urban Construction and Management, Master’s degree student
E.G. Popov4, Department of Urban Construction and Management, Master’s degree student
1,2,3,4Don State Technical University (DSTU), Russia, Rostov-on-Don
4pks81@bk.ruAbstract. Currently, life cycle management of construction projects involves the active use of digitalization and process automation tools. Studying foreign experience in this area allows us to find effective approaches and methods for systematizing and increasing the efficiency of implementing the concept of life cycle management of buildings in modern realities.
Key words: information modeling, building life cycle, digitalization, construction industry, project management.
The results of the survey of the technical condition of the retaining wall in KurskL.V. Chaykovskaya1, Department of Industrial and Civil Engineering, lecturer
D.A. Bredikhin2, student
R.M. Esedullaev3, student
G.V. Dedikin4, student
E. Scurcan5, student
1,2,3,4,5«South-West State University», Russia, Kursk
1lilizubkova@mail.ru;
2mr.bredikhin2012@mail.ru;
3suiti46@mail.ru;
4dr.dredus@mail.ru;
5skurkan.evgeniya.2001@mail.ruAbstract. The article presents the results of a survey of a retaining wall in the city of Kursk, describes the possible causes of destruction, the current state of the facility, and suggests possible ways to restore the retaining wall.
Key words: retaining wall, inspection.
Calculations of non-normalized parameters of noise pulses when choosing means to reduce it in industrial buildingsI.L. Shubin1, Doctor of Technical Sciences
A.I. Antonov2, Doctor of Technical Sciences
V.I. Ledenev3, Doctor of Technical Sciences
I.V. Matveeva4, Candidate of Technical Sciences
1,3Research Institute of Building Physics Russian Academy of Architecture and Construction Sciences (NIISF RAASN), Russia, Moscow
2,3,4Tambov state technical University, Russia, Tambov
Abstract. Currently, the normalization of pulse noise is carried out according to two indicators, both for all time-variable noises, namely, by the equivalent A-corrected sound level LAekv, dB, and by the maximum A-corrected sound level L
Amax, dB. Based on the available hygienic studies of pulse noise, it is shown in the article that these normalized characteristics are not enough to assess the negative effects of pulse noise on the human body. When developing noise protection measures, it is necessary to evaluate other currently non-normalized indicators. Such indicators include the temporal modulation of pulse noise and the rate of its attenuation. To calculate them, the article suggests using a combined method that makes it possible to determine the indicators, taking into account the nature of sound reflection from fences and the shape of the premises. The proposed method is implemented as a calculation module in the developed software package for the calculation and design of noise protection in rooms with pulsed noise sources.
Key words: pulse noise, abnormal noise indicators, noise reduction measures, industrial buildings.
Evaluation of the effectiveness of reducing reflected noise behind the screen when installing sound-absorbing cladding in a roomA.I. Antonov1, Doctor of Technical Sciences
V.P. Gusev2, Doctor of Technical Sciences
O.A. Zhogoleva3, Candidate of Technical Sciences
V.I. Ledenev4, Doctor of Technical Sciences
1,2,3,4Research Institute of Building Physics Russian Academy of Architecture and Construction Sciences (NIISF RAASN), Russia, Moscow
1,3,4Tambov state technical University, Russia, Tambov
Abstract. In industrial premises with powerful noise sources, shielding is used to reduce direct noise in workplaces that are not connected to the source. The acoustic efficiency of shielding largely depends on the presence of reflected noise in the room and its level. For this reason, in order to increase the efficiency of screens in the premises, sound-absorbing cladding is additionally arranged, which reduces the reflected component of noise. To assess the acoustic efficiency of cladding in rooms with a screen, it is proposed to use a combined calculation method that takes into account the mirror-diffuse nature of sound reflection from the screen and the room fences. The article provides an example of evaluating the acoustic efficiency of reducing reflected noise in a room with a screen when sound-absorbing cladding is installed in it.
Key words: industrial premises, noise shielding, sound-absorbing cladding, noise calculation, noise protection measures.
Statistics of cadastral works in relation to immovable objects in settlements of the Kursk regionTatyana M. Novikova1, Department of «Expertise and Management of Real Estate, Mining», Associate Professor,
Candidate of Geographical Sciences
Veronika A. Skorik2, Construction and Architecture of the direction «Land Management and Cadastres», Bachelor
Daniil S. Loshakov3, Construction and Architecture of the direction «Land Management and Cadastres», Bachelor
Maria O. Mukovnina4, Construction and Architecture of the direction «Land Management and Cadastres», Bachelor
1,2,3,4«South-West State University», Russia, Kursk
1abetatyana@yandex.ru;
2belka.flay@mail.ru;
3dannya.1099@gmail.com;
4mariahmukovnina@yandex.ruAbstract. In the interests of the population of the Russian Federation, together with the Ministry of Economic Development and the heads of regions, Rosreestr provided an opportunity for the external reception of documents at the MFC in all regions of the country. The extraterritorial principle is the ability to apply for registration of rights at the office of reception and issuance of documents, regardless of the location of the real estate object. Such an opportunity is provided for the applicant with Federal Law No. 218FZ “On State Registration of Real Estate”, which entered into force on January 1, 2017 [6] In the Kursk region, the exterritorial principle has been in operation since February 2021. During this time, the Kurds have submitted 2,000 extraterritorial applications. These indicators reflect the positive dynamics of the development of real estate policy in the Russian Federation.
Key words: extraterritorial principle, unified state register of real estate (EGRN), registration of ownership rights, limitation (encumbrance) of rights to a real estate object, immovable property, electronic services.
Usage of green accessible roof area to improve the energy efficiency of public buildingsT.O. Tsurik1, Department of Architecture, Urban Planning and Graphics, Associate professor, Ph.D. in Cultural Studies
K.S. Litvinova2, Department of Architecture, Urban Planning and Graphics, student
A.R. Tsukurova3, Department of Architecture, Urban Planning and Graphics, student
1,2,3«South-West State University», Russia, Kursk
1TsurikTO@yandex.ru;
289611990087k@mail.ru;
3tsukurovaanna.com@mail.ruAbstract. The article analyzes foreign and domestic experience and substantiates the relevance of using green roofs in Russia. A comparative analysis of green exploited and non-exploited roofs is carried out. The advantages of ecosystem services of green roofs involved in improving the energy efficiency of buildings and the comfort of the urban environment are revealed. The recommendations of the technological level and the assortment nature of plants are proposed to ensure the optimal functioning of the roof with semi-intensive landscaping in the temperate climate of most Russian cities.
Key words: semi-intensive green roof, operated roof, energy efficiency of the building, environmental aspects, resource saving, comfortable urban environment.
The effect of adhesive additives DAD-TA and AZOL 1006 on the properties of bitumen binder in asphalt concrete mixD.V. Khodeev1, Department of Industrial and Civil Construction, Associate Professor
S.Yu. Surnenko 2, Department of Industrial and Civil Engineering, postgraduate student
1,2,3«South-West State University», Russia, Kursk
1assistentproekt@yandex.ru;
2surnenkov2015@mail.ruAbstract. The article discusses the main conditions for the use of bitumen binder in the production and laying of asphalt concrete mixtures. The laboratory received: a sample of petroleum road viscous bitumen grade BND 100/130, produced by the product of JSC Achinsk Oil Refinery of the Eastern Oil Company, a sample of crushed stone fr. 1015 mm in an amount of 11.2 kg, adhesive additives DADTA (hereinafter referred to as DAD) and AZOL 1006 (hereinafter referred to as AZOL) (additive for warm asphalt, manufactured by OJSC Kotlas Chemical Plant). Sample of crushed stone fr. 1015 mm was delivered to determine the quality of adhesion of the bitumen binder to the crushed stone surface in accordance with GOST R 58406.2 Appendix D. The adhesive additive DAD in the amount of 0.8% by weight of the bitumen was introduced into the original petroleum road bitumen viscous grade BND 100/130 at a temperature of 140°C and stirring was carried out for 5 minutes. The resulting sample of bitumen BND 100/130 + 0.8% DAD was assigned the number 0075 2022. The adhesive additive AZOL in the amount of 0.5% by weight of the bitumen was added to the original petroleum road bitumen viscous grade BND 100/130 at a temperature of 140°C and stirring for 5 minutes. The resulting sample of bitumen BND 100/130 + 0.5% AZOL was assigned the number – 0076 2022.
Key words: road construction, asphalt concrete mixtures, complex binder, adhesive additives.
Selected aspects of the use of fiberglass pipes in heat distribution networksY.S. Zakharov1, leading researcher of Institute, Candidate of Technical Sciences
1Research Institute of Building Physics Russian Academy of Architecture and Construction Sciences (NIISF RAASN),
Russia, Moscow
Abstract. Heat supply in Russia is of great social importance and increasing its reliability, quality and efficiency is a non-alternative task. The state of heating networks in Russia is catastrophic and requires a sharp increase in the volume of network renewal, decommissioning the most dilapidated pipelines with the highest accident rates and heat losses.
Troublefree operation of heat supply systems, restoration of damaged and emergency pipelines are tasks that cannot be solved solely by increasing funding, but require the introduction of modern design and technological solutions.
Despite the fact that pre-insulated steel pipes are mainly used in the construction of heating networks, work continues in the Russian Federation to introduce pre-insulated polymer pipes into the practice of constructing heating distribution networks.
The article discusses the use of pre-insulated fiberglass pipes in the construction of heat distribution networks.
Key words: heating networks, thermal insulation, fiberglass, pipes, temperature, pressure, operation, assessment, restoration.
Reduction of daylight factor by stationary sun protection devices taking into account orientation of light openingI.A. Shmarov1, Candidate of Technical Sciences
E.V. Korkina2, Candidate of Technical Sciences
V.V. Zemtsov3, Doctor of Technical Sciences
1,2,3Research Institute of Building Physics Russian Academy of Architecture and Construction Sciences (NIISF RAASN), Russia, Moscow
2Moscow State University of Civil Engineering (National Research University), Russia, Moscow
Abstract. Rational design of indoor sun protection systems requires an integrated approach that takes into account both direct and scattered solar radiation. Research in this area highlights the importance of using daylight to improve the energy efficiency of buildings, while at the same time providing a comfortable environment for being indoors. The development of effective sun protection systems should be based on the geographical location of the building, climatic conditions and room lighting specifications.
Key words: luminous flux, daylighting, daylight factor, equidistant projection of the sky, energy efficiency.
Energy-efficient facade system HILTIA.A. Kapustin1, vicepresident of engineering
D.A. Senotov2, head of standardization and certification department
A.A. Dikov3, certification engineer
1,2,3Hilti Distribution LTD, Russia, Khimki
1Anton.Kapustin@hilti.com;
2Dmitriy.Senotov@hilti.com;
3Alexander.Dikov@hilti.comAbstract. A wide variety of types of suspended facade systems (NFS) provides a wide choice of options for finishing external walls for architects and designers. At the same time, the energy efficiency aspect of the applied technical solutions of NFS is most important for customers and developers, as it allows significant savings on the operation of buildings and structures both at the design and construction stage, and after construction is completed. This can be achieved through more energy-efficient solutions that reduce the thickness of the thermal insulation used. In addition, there are special preferential tax conditions for owners of energy-efficient buildings and structures. This article describes the developments of Hilti Distribution LTD JSC, which make it possible to achieve a high level of energy efficiency of a construction site. Thoughtful and technologically advanced solutions for brackets make it possible to achieve a large difference in heat loss compared to classic systems made of aluminum alloys or galvanized steel. The article describes the regulatory and legislative prerequisites for the use of energy efficient solutions at construction sites, the current course of the Ministry of Construction of the Russian Federation towards tightening energy efficiency requirements. The expected benefits from the use of new energy-efficient NFS brackets are shown. In addition, a comparison with classical solutions is provided, based on research conducted by the leading research institute NIISF RAASN. The expected positive effect from the introduction of these products into the practice of design and construction of multi-apartment residential buildings and other construction projects is described.
Key words: hinged facade system, bracket with perforation, thermal protection shell of the ermal characteristics, energy efficiency, thermal energy consumption, energy efficiency.
Analytical solution of calculating the deformation of a cable-stayed systemN.A. Buzalo1, Candidate of Technical Sciences
I.D. Platonova2, Candidate of Technical Sciences
R.R. Ponomarev3, graduate student
A.A. Filileev4, graduate student
V.A. Smirnov5, Candidate of Technical Sciences
1,2,3,4SouthRussian State Polytechnic University (NPI) named after M.I. Platova, Russia, Novocherkassk
5Research Institute of Building Physics Russian Academy of Architecture and Construction Sciences (NIISF RAASN), Russia, Moscow
5Moscow State University of Civil Engineering (National Research University), Russia, Moscow
1buzalo_n@mail.ru;
2 irinplatonova@yandex.ru;
3tiberium777@mail.ru;
4Fil08@bk.ru;
5belohvost@list.ruAbstract. Features of cable-stayed systems are considered. The method of calculation of combined constructions with different type of suspension, including systems with inclined suspensions, has been applied. All bearing elements are considered to be in the elastic phase. The determination of the strain equations takes into account the longitudinal deformations of the suspensions as well as the longitudinal force arising in the bar panels. The basic matrix equation for determining the horizontal and vertical movements of all components of the structure has been obtained for the cantilever cable-stayed system. This is a mathematical model of the system. It allows you to determine the state of the structure at the current time. This means that it opens the way to regulating the stress-strain state.
Key words: cable-stayed coverings, calculation taking into account geometric nonlinearity, movements, stress-strain state.
Influence of technology factors on strength characteristics of layers of multilayer reinforced concrete structuresTatyana A. Barabanova1, assistant professor, Candidate of Technical Sciences
Oleg A. Korol2, lassistant professor, Candidate of Technical Sciences
1,2Moscow State University of Civil Engineering (National Research University), Russia, Moscow
1BarabanovaTA@mgsu.ru,
2KorolOA@mgsu.ruAbstract. The strength of multilayer reinforced concrete structures is ensured mainly by physical and mechanical properties and the joint work of concrete and reinforcement. The rods of working reinforcement are predominantly placed near the surface of the structure, taking into account the construction of a protective layer, thus protecting the reinforcement from external atmospheric, temperature and other influences. Thanks to the use of a combination of various coefficients, including the working condition coefficient, designers are able to foresee possible changes in the strength properties of reinforced concrete structure materials at various stages of its life cycle.
Factors influencing the strength of reinforced concrete structures also include unaccounted strength losses during the formation of the structure of freshly laid concrete, associated with the influence of temperature and humidity environmental conditions during the period of concrete strength gain.
Current standards recommend determining the compressive strength of concrete on cube samples, thus obtaining information about it within the height of the concrete sample, assuming that the data obtained relate to the entire volume of the concrete conglomerate; in addition, the strength properties along the cross section of the structure are determined by cutting cores to the required depth or by nondestructive methods.
Key words: technological factors, strength characteristics of reinforced concrete structures, multilayer structures, climatic destruction.
Bending of a circular slab on a combined foundationN.M. Atarov1, Associate Professor, Candidate of Technical Sciences
1Moscow State University of Civil Engineering (National Research University), Russia, Moscow
1kanz@mgsu.ruAbstract. The article discusses the problem of bending a circular plate on the surface of a differentiated base, consisting of two layers. The upper layer is similar to a Winkler base, allowing only structural deformations, while the lower layer has two characteristics. The general solution to this plate bending problem, yes, is expressed in cylindrical functions, and the statement of boundary conditions are considered. A numerical example is provided for calculating the plate under the influence of a uniformly distributed load.
Key words: combined base, compression and shear stiffness coefficients of the base, cylindrical functions, modified Bessel functions.
Features of the methodology for calculating reinforced concrete flat-stressed structures of composite sectionA.V. Shleenko1, Department of Industrial and Civil Engineering, Associate Professor, Candidate of Economic Sciences
D.D. Sidorov2, Department of Industrial and Civil Engineering, student
1,2«South-West State University», Russia, Kursk
1shleenko77@mail.ru;
2den46rus@mail.ruAbstract. This article discusses the methodology for calculating reinforced concrete flat-stressed structures of composite cross-section.
The study is based on an analysis of existing regulatory documents and laboratory research results. The features of the application of the calculation method are discussed, the factors influencing the behavior and deformations of such structures are determined. The main attention is paid to the analysis of the work of longitudinal and transverse reinforcement in a composite section, as well as the interaction between the components of the structure. The results of the study can be used to improve the accuracy and efficiency of the methodology for calculating reinforced concrete flat-stressed structures with a composite section.
Key words: scalar damage variable, models, strength, flat-stressed structures, methodology, calculation.