75504 2712-8172 Magazine of Civil Engineering 18 1 133 2025 1-109
RAR RUS 13301-13301 56437725200 0000-0002-6687-7249 Moscow State University of Civil Engineering (National Research University) Garanzha Igor garigo@mail.ru
Moscow, Russia
 56826221800 0000-0002-1825-2738 Moscow State University of Civil Engineering (National Research University) Tanasoglo Anton a.v.tan@mail.ru
Moscow, Russian Federation
0009-0000-8795-7128 Moscow State University of Civil Engineering (National Research University) Ademola Habeeb ademolahabeeb07@gmail.com
Moscow, Russian Federation
Moscow State University of Civil Engineering (National Research University) Pisareva Milena milena.pisareva.02@bk.ru
Moscow, Russian Federation
Dynamic behavior of power transmission line supports under wind influence In this article, we give experimental research on the dynamic behavior of steel supports of overhead power lines (OHPL) under the action of wind loads. The methodology and scheme of the experiment were created in two stages on the corner dead-end and intermediate supports of OHPL 220 kV “TPP Zmiev – Zalyutino”. In the first stage, excitation of the support’s oscillations was achieved using wind exposure; in the second stage, there were recorded free oscillations of the system “support – current wires”, which were created by means of handmade resonance. There are presented graphs of stress variations in the structural elements of tower lattice supports under wind action along and across the OHPL. There were experimentally determined basic natural frequencies of steel supports, which are shown on the damping graphs of free oscillations. Analysis of the obtained spectra of longitudinal velocity wind pulsations allowed conclusions about the stationary nature of wind flow. There is a determination of the necessity of the frequency detuning of OHPL support from the natural frequency of 2.2 Hz because external action with the given frequency is possible at the current wire breakage in one of the phases. The first three natural frequencies of oscillations for overhead line support were determined experimentally. Frequencies below 0.75 Hz are associated with the effect of wind on current wires. Analysis of the results made it possible to clarify that the wind at angle of 90° to the overhead line route not only exerts maximum static pressure but is also almost twice as susceptible to the considered “support – wires” system in dynamics. The presented methodology makes it possible to study the dynamic properties and study the response of structures to wind influences not only of overhead line supports but also of wind power installations and antenna supports of radio relays and cellular communications. 10.34910/MCE.133.1 624.014:621.315.1 dynamic behavior wind load natural frequency forced oscillation overhead power line fast Fourier transform https://engstroy.spbstu.ru/article/2025.133.1/
RAR RUS 13302-13302 57204363802 0000-0002-2880-8103 Kalashnikov Izhevsk State Technical University Gumeniuk Aleksandr aleksandrgumenyuk2017@yandex.ru
Izhevsk, Russia
 55987955900 0000-0001-8118-8866 Kalashnikov Izhevsk State Technical University Gordina Anastasiya afspirit@rambler.ru
Izhevsk, Russia
 0009-0009-8950-2907 Kalashnikov Izhevsk State Technical University Petrynin Semyon petryninofficial@yandex.ru
Izhevsk , Russian Federation
 0000-0002-3331-9443 Moscow State University of Civil Engineering (MGSU) National Research University Buryanov Aleksandr rga-service@mail.ru
Moscow, Russia
 Novosibirsk State Technical University Skiba Vladimir bauman@bmstu.ru
Novosibirsk, Russian Federation
 Influence of electric current on the mineral matrix of technogenic anhydrite The current conditions for the development of industrial and civil engineering in the regions with a negative average daily temperature require an increase in the economic efficiency of heating systems and reduction of the material consumption for its production and operation. One of the solutions to this problem is electrically conductive concrete. Cost reduction is achieved through the use of binders of anthropogenic origin. The electrically conductive concrete samples with dimensions of 70 × 70 × 70 mm and prototype product with dimensions of 500 × 500 × 50 mm were used for the assessment of the effect of the micro heating elements on the performance and physicochemical properties of mineral matrix. The electrically conductive concrete was based on waste of anthropogenic origin (fluorine-anhydrite) and fine aggregates. The additives in the form of 7 % technical soot suspension and 1 % of carbon fiber were used as micro heating elements. The physical and technical studies were carried out on the 28th day after 3 cycles of heating and cooling of the samples. The obtained results confirm that carbon fiber reduces the specific volume resistance up to 8.5 kOhm⋅cm. It allows the usage of proposed compositions for the manufacture of large-format heating elements. The experimental operation of large-format heating elements based on the developed compositions made it possible to determine its thermophysical characteristics. The heating of the elements surface from 21.9 to 28.5 °C for 40 minutes were obtained. Thus, the use of the developed prototype as heating elements is possibly provided that the pre-installed electrodes are protected from electrochemical corrosion. The electrochemical corrosion must be established through the use of methods of physicochemical analysis. 10.34910/MCE.133.2 666.91 fluoroanhydrite modification carbon fiber mineral matrix microstructure composite materials electrical properties electrochemical corrosion micro heating elements https://engstroy.spbstu.ru/article/2025.133.2/
RAR RUS 13303-13303 57191530761 0000-0002-4765-5819 Moscow State University of Civil Engineering (National Research University) Alekseytsev Anatoly aalexw@mail.ru
Moscow, Russia
 Technical University in Košice Kvocak Vincent vincent.kvocak@tuke.sk 0000-0003-0768-8808 Moscow State University of Civil Engineering (National Research University) Popov Dmitry popovds89@mail.ru
Moscow, Russian Federation
 Technical University in Košice Al Ali Mohamad mohamad.alali@tuke.sk Dynamic behavior of a reinforced concrete slab of a pedestrian bridge with stiff rebars Evaluation of the ultimate bearing capacity of a reinforced concrete slab of a pedestrian bridge with stiff rebars is a relevant issue investigated in the article. Dynamic analysis takes account of low velocities of dynamic loading. A 3D model of a structure is made. A stiff rebar is a U-shaped perforated profile welded to the plate. The focus of the computation methodology is the model verification. Towards this end, mechanical characteristics of materials are experimentally identified; full-size specimens are made and subjected to static load testing. The numerical study focuses on analyzing two sessions of loading by an impactor located in the center of a span. The impactor has symmetrical and nonsymmetrical impact spots. Dynamic loading is proposed to be simulated in several stages. At the final stage, the structure vibrates together with the impactor. The Menétrey–Willam model is chosen to describe the deformation of concrete; the stress-strain state of the structure and stiff rebars is described by a curvilinear diagram that conveys strengthening and shows the actual behavior of the rebars. An implicit integration scheme is employed to identify detailed dependences showing the time-dependent change in the stress-strain state components affecting structural safety. The conclusion is that nonsymmetrical loading is the most substantial dynamic effect, and stiff rebars can greatly increase the survivability of the system subjected to impacts of man-induced origin. 10.34910/MCE.133.3 624.03 dynamics rigid reinforcement accidental failure numerical modelling reinforced concrete slabs mechanical impact https://engstroy.spbstu.ru/article/2025.133.3/
RAR RUS 13304-13304 Sebelas Maret University Pradipta Bondan Kartika bondankartika@student.uns.ac.id
Surakarta, Indonesia
 Sebelas Maret University Bhayusukma Muhammad Yani muhammadyani@staff.uns.ac.id
Surakarta, Indonesia
 Sebelas Maret University As'ad Sholihin sholihinasad@staff.uns.ac.id
Surakarta, Indonesia
 Axial capacity and ductility of reinforced concrete columns with strip plate steel and conventional stirrup reinforcements A column is a vertical structural element that transmits loads to the foundation and is required to withstand a variety of loads. The incorporation of reinforcing bars serves to enhance the axial capacity and mitigate the risk of sudden collapse of the column. The potential use of alternative materials for stirrup reinforcement represents a topic of significant interest within the academic community. Prior research has demonstrated that the stirrup reinforcement ratio exerts a significant influence on the strength and ductility of concrete. Specifically, higher ratios have been shown to lead to enhanced performance in both of these attributes. This study examined the behavior of core concrete in reinforced concrete columns with varying types of reinforcing bars, including 3×25 mm, 3×30 mm, 4×25 mm strip plate steel, and 10 mm diameter deformed conventional stirrups. A total of thirteen columns were tested until collapse in order to evaluate a number of factors, including column shortening, peak axial load, column stress, reinforcement and core concrete strain, and a comparison of theoretical and actual confined core concrete compressive strength. The study demonstrated that the incorporation of strip plate stirrups in reinforced concrete columns exerted a marginal influence on the column’s axial capacity. The columns reinforced with conventional stirrups exhibited enhanced peak axial load, column stress, and restraint strength, accompanied by a reduction in column shortening. Conversely, the columns with 3×30 mm strip plates demonstrated superior ductility. An elevated stirrup reinforcement ratio was observed to enhance the compressive strength of confined concrete, although a discrepancy was noted between the theoretical calculations and the actual values. 10.34910/MCE.133.4 624.012.3 strip plate steel axial capacity transverse reinforcement compressive strength performance reinforced concrete column https://engstroy.spbstu.ru/article/2025.133.4/
RAR RUS 13305-13305 57190863290 https://orcid.org/0000-0002-0274-0673 Industrial University of Tyumen Maltseva Tatyana maltsevatv@tyuiu.ru
Tyumen, Russia
 0000-0003-3832-5321 Industrial University of Tyumen Dmitriev Andrey dmitrievav@tyuiu.ru
Tyumen, Russian Federation
 0000-0002-3380-0835 Industrial University of Tyumen Sokolov Vladimir sokolovvg@tyuiu.ru
Tyumen, Russian Federation
 Natural vibrations of buried pipeline section To ensure reliable operation of the pipeline, the design takes into account the natural vibration of the structure caused by the uniform flow of the product along the pipeline. A pipeline section in the form of a steel-concrete cylindrical shell placed in the soil condition is considered. The inner part of the pipeline is made of steel, and the exterior is covered with a concrete layer 30–50 mm thick. Determination of natural vibration frequencies for a two-layer cylindrical shell in the soil is clarified using two methods. The first method is analytical, according to which the dependence for the frequency is obtained using the half momentless theory of cylindrical shells. The second is numerical and is based on the finite element method (FEM) with the construction of the computational model in the Lira Sapr environment. Modeling of steel and concrete layers of the composite shell in the software package was carried out by 4-node plates, which are combined into a common structure by means of absolutely rigid bodies (ARB). Two cases of taking into account the soil condition surrounding the shell were considered. In the first case, a soil mass (with dimensions of 5.3×5.3 m) is created by volumetric bodies, while in the second case, the pastel coefficient for the concrete layer is specified. It was found that the second method of setting the soil conditions allowed to reduce the time of data input by 5–6 times with the same results obtained. The discrepancy between the frequencies of natural vibration for the object of study determined by the analytical method and FEM does not exceed 10 %, and for the first 3 frequencies of the spectrum is not more than 6 %, therefore, both methods are applicable. The use of an analytical expression made it possible to obtain results an order of magnitude faster with the pastel coefficient than with the help of numerical soil modeling using volumetric elements. 10.34910/MCE.133.5 624.074.433 natural vibration finite element method half momentless theory of cylindrical shells frequency of vibrations linear-elastic soil https://engstroy.spbstu.ru/article/2025.133.5/
RAR RUS 13306-13306 Peter the Great St. Petersburg Polytechnic University Lukash Kseniia lukashksusha@gmail.com
St. Petersburg, Russia
 Peter the Great St. Petersburg Polytechnic University Shurshilin Egor Shurshilinegor@yandex.ru
St. Petersburg, Russia
 57212393243 0000-0001-9578-7245 Peter the Great St. Petersburg Polytechnic University Olekhnovich Yanis oyanis@list.ru
St. Petersburg, Russia
 57196054199 0000-0002-0840-6828 Peter the Great St. Petersburg Polytechnic University Radaev Anton TW-inc@yandex.ru
St. Petersburg, Russia
 Correlation model for cost and technical characteristics of thermal insulation material used in enclosing structure Research relevance is determined by the need for development of the effective design and organizational-technological solutions at the stage of design or renovation of housing construction objects in the conditions of tightening requirements for the duration, cost, and quality of construction projects being implemented, as well as the limitations of scientific developments used for determination of the characteristics for the above-mentioned solutions in terms of the completeness of the factors under consideration and the objectivity of taking into account the relationships between them. Problem statement: The paper considers a design solution formed in relation to the enclosing structure within housing construction object, which involves the use of thermal insulation material as a separate layer of the structure. It is necessary to form mathematical description of the relationships between the technical and cost characteristics of the thermal insulation material and the energy and economic efficiency indicators of the design solution. Research aim: development of tools to determine the characteristics of design solutions formed in relation to the enclosing structure within housing construction object, based on energy and economic efficiency criteria. Research tasks are the following: review and comparative analysis of scientific developments in the field of determination of characteristics for design solutions formed in relation to enclosing structures within housing construction objects; development of analytical model describing correlation between the specific cost and technical characteristics of thermal insulation material used as a separate layer of the enclosing structure; implementation of the model on a practical example; formation of recommendations for the use of the model during solution of the problems related to determination of characteristics of design solutions for enclosing structures. Results. The analytical model has been developed that describes the linear dependence of the specific cost of thermal insulation material used in the enclosing structure on its technical characteristics. The results of the implementation of the analytical model on a practical example confirmed its high practical significance. Findings. The developed analytical model can be used for predictive calculation of the specific cost of thermal insulation material corresponding to the mineral wool on the basis of the specified values for its technical characteristics. Due to the composition of the factors taken into account, the developed analytical model can be effectively integrated into the structure of tools for determination of the characteristics for design solutions related to enclosing structures within housing construction object on the basis of energy and economic efficiency criteria. 10.34910/MCE.133.6 699.86 housing construction object enclosing structure mathematical model correlation thermal insulation material specific cost technical characteristics https://engstroy.spbstu.ru/article/2025.133.6/
RAR RUS 13307-13307 57205077565 0000-0002-0827-6816 Peter the Great St. Petersburg Polytechnic University Goncharenko Dmitry honcharenkodmitry@gmail.com
St. Petersburg, Russian Federation
 Kobykhno Iliya 57192920041 0000-0001-5054-3482 Peter the Great St. Petersburg Polytechnic University Bobrynina Elizaveta bobrynina_ev@spbstu.ru
St. Petersburg, Russian Federation
 Peter the Great St. Petersburg Polytechnic University Yadykin Vladimir
St. Petersburg, Russia
 Aluminum surface treatment for shear strength improvement of the laminate composites In this paper, the effect of surface treatment on the adhesion between D16AM aluminum alloy and thermoplastic polyurethane is studied. Adhesion between the metal and polymer plays a key role in the formation of the strength properties of the metal-polymer based laminar composites, which are nowadays widely used in load-bearing structures like beams, columns, roofs, pedestrian bridges, etc. The effects of the metal surface treatment, such as chemical etching, electrochemical anodizing, laser treatment, and a combination of the mentioned processing, on the composite’s shear strength were examined. The morphology of the metal surface after treatment was studied via scanning electron microscopy and atomic force microscopy. The true value of the adhesive strength was calculated, taking into account the micro- and macro-relief of the surface and its actual surface area determined via atomic force microscopy. A combined method of metal surface treatment to increase adhesion to a polymer is proposed, the method includes chemical or electrochemical etching followed by laser treatment. It was shown that complex treatment of the aluminum surface allows to increase the shear strength of composites by 50 %. It is established that with chemical etching or laser treatment, the value of the true adhesive strength remains virtually unchanged, however, when using the combined method, its significant increase is observed. 10.34910/MCE.133.7 67.017 metal-polymer laminate composite adhesion laser surface treatment etching anodizing atomic force microscopy https://engstroy.spbstu.ru/article/2025.133.7/
RAR RUS 13308-13308 0000-0003-0169-3323 Gazprom Invest LLC Sapelkin Roman Rom_1976@mail.ru
St. Petersburg, Russia
 57204360846 0000-0001-5708-1786 Voronezh State Technical University Matreninskiy Sergei gso09@yandex.ru
Voronezh, Russian Federation
 57195990417 0000-0003-2385-5426 Moscow State University of Civil Engineering (National Research University) Mishchenko Valery oseun@yandex.ru
Moscow, Russian Federation
0000-0002-1030-8370 Peter the Great St. Petersburg Polytechnic University Tarasov Vladimir vtarasov1000@yandex.ru
St. Petersburg, Russia
 Protective coatings of building structures and pipelines for operation in the Arctic The article is devoted to the study of the efficiency of using insulating (protective) coatings of building structures and pipeline transport for their reliable and trouble-free operation in extreme conditions of the Arctic zone. Innovative construction and composite materials – rubber concrete and rubber mastic, which have a combination of high physical, mechanical, and operational characteristics, are proposed to be used as protective coatings. A mandatory condition for the structure formation of rubber concrete and rubber mastic with the formation of a durable and corrosion-resistant protective layer is the dosed introduction of thermal energy into the composite material during an experimentally established period of time, which ensures the production of a protective coating with high specified properties. To establish rational technological modes of structure formation of the rubber-containing protective layer, experimental studies were carried out to optimize the temperature and time modes of introducing thermal energy into the composite material of the protective coating. Optimization of the technological modes of forming a protective coating from rubber concrete for reinforced concrete building structures was carried out on a developed and manufactured experimental heat-generating stand with a working element in the form of an uninsulated metal wire. Optimization of technological modes of formation of protective coating from rubber mastic for pipe metal was carried out on an experimental stand using induction heating. It was proposed to use a number of industrial wastes (fly ash, rubber crumb, etc.) as a filler in rubber concrete and in rubber mastic. A comparative analysis of the characteristics of the protective coating of pipe metal based on rubber mastic with the characteristics of the currently widely used multilayer polyethylene coating was carried out. The competitive advantages of rubber-containing protective coating of pipe metal are determined. 10.34910/MCE.133.8 621.644 : 620.193 : 667.6 protective coating building structures pipe metal Arctic industrial safety rubber mastic rubber concrete recycling industrial waste thermal energy vulcanization heating wire induction temperature-time conditions https://engstroy.spbstu.ru/article/2025.133.8/
RAR RUS 13309-13309 0000-0002-6782-2514 Petersburg State Transport University Abu-Khasan Mahmud abukhasan@pgups.ru
St. Petersburg, Russian Federation
 0000-0002-8297-1630 JSC "Atomenergoproekt", St-Petersburg Branch Babsky Aleksandr aebabskiy@spbaep.ru
St. Petersburg, Russian Federation
 0000-0002-6473-5669 JSC "Atomenergoproekt", St-Petersburg Branch Oleinikov Ilya oleinikov.i.i@gmail.com
St. Petersburg, Russian Federation
 JSC "Atomenergoproekt", St-Petersburg Branch Oleinikova Irina zuenko_irina@mail.ru
St. Petersburg, Russian Federation
 0000-0002-1030-8370 Peter the Great St. Petersburg Polytechnic University Tarasov Vladimir vtarasov1000@yandex.ru
St. Petersburg, Russia
 Dynamic and statically equivalent approaches for analysis of the turbine foundations under the emergency load The article presents the results of the research of the emergency loads effect on reinforced concrete turbine foundations of different types. Computational experiments were performed in a specialized finite element analysis program NX/NASTRAN. Calculations of the high-power turbine foundations of frame, wall, and vibration-insulated structures have been carried out. Emergency loads associated with a short circuit and a loss of synchronization (generator failure) were taken into account in the calculations by equivalent static and dynamic approaches. The comparison was carried out according to the calculated values of displacements and forces, in the elements of the computational model, where extreme values of forces were expected from the design experience. The results of the comparative analysis indicate that the use of a widespread statically equivalent approach often leads to a multiple overestimation of forces and displacements, in comparison with using of dynamic approach. Therefore, strength and dynamic analysis of high-power turbine foundations under emergency loads, it is necessary to apply a dynamic approach. A statically equivalent approach can be used for analysis of foundations for turbine units of relatively low power. 10.34910/MCE.133.9 699.842 turbine foundation vibration-insulated turbine foundation dynamic analysis emergency unbalance short circuit on the generator https://engstroy.spbstu.ru/article/2025.133.9/