In the article, a floating liquefied natural gas plant located on a marine gravity platform in the Murmansk region was chosen as the object of research. The results of the development and selection of optimal concrete compositions using fiber fillers and modifying additives are presented. A set of works has been performed to determine the effect of basalt fiber fibers, as well as plasticizing additives on the structure and strength of fine-grained fiber concrete. Their advantages are shown and proposed for use in the constructions of tank hulls and other objects on a marine gravity platform.

Keywords: fibroconcrete, gas storage tanks, gravity platform, basalt fiber, superplasticizer

The paper analyzes various approaches to identifying and recognizing license plates in intelligent transport networks. A deep learning model has been proposed for localizing and recognizing license plates in natural images, which can achieve satisfactory results in terms of recognition accuracy and speed compared to traditional ones. Evaluations of the effectiveness of the deep learning model are provided.

Keywords: VANET, intelligent transport networks, YOLO, city traffic management system, steganography, deep learning, deep learning, information security, convolutional neural network, CNN

The paper describes the process of modeling 3D structures of synthetic gas burners, with the analysis of the simulation results obtained for several types of models and the selection of optimal modes for them. The main use of the burner is planned for boiler equipment for household needs in private as well as apartment buildings, in the absence of central heating. In addition, the article provides a justification for the thermal parameters at the inlet and outlet of the burner.

Keywords: synthesis gas, combustion, design parameters, combustion chamber, nozzle, modeling

The article is devoted to modeling heating of fuel oil using a pulsed fluid flow in the SolidWorks Flow Simulation software module. In the future, the use of this technological solution can be considered by a number of industries in the Russian Federation and abroad. The purpose of this article is to describe the results of a computer model of the technological process under study. The computer calculation of the fuel oil heating model using a pulse flow makes it possible to evaluate the efficiency of the process and determine the optimal parameters to achieve maximum efficiency. This will help to reduce the cost of heating fuel oil and increase the efficiency of industrial equipment of enterprises.

Keywords: fuel oil, oil, coolant, shock unit, diaphragm pump, pulse flow, turbulent mode, cavitation, solidworks flow simulation

The issues of optimization of ribbed reinforced concrete slabs with prestressing of reinforcement, taking into account geometric, strength and cost indicators, are considered. The study was car-ried out on the basis of an analysis of the sales market for building materials, the basics of rein-forced concrete resistance and the provisions of regulatory documents, design activities in the Russian Federation, as well as the works of domestic and foreign scientists. The research method is structural-analytical analysis taking into account the relationships of the factors under study. Analytical and graphic materials are presented, revealing the regularities between the geometric dimensions and the cost of components. The proposed method for determining the efficiency of a structure, taking into account the cost indicators of materials, indicates the feasibility of its ap-plication in design practice. Recommendations for design are given to ensure that structures of the minimum cost are obtained and that meet the requirements of strength and durability.

Keywords: reinforced concrete, strength, structure, reinforcement, diameter, price, cost, efficiency, dimen-sions, analysis, element

The article presents the parameters of the operation of water-jet elevator units, which are widely used in heat supply systems. A new design of a water-jet elevator unit with a pulsed heat transfer medium, adjustable depending on the outside air temperature without using a mixing pump, is proposed. A description of the design and principle of operation of a water-jet elevator unit with a pulsed heat carrier suspension is given. To confirm the effectiveness of the proposed technical solution, laboratory hydraulic tests of the.

Keywords: Elevator, weather control, heating system, controller, pump, valve, sensor, temperature, heat energy, tariff

In this article, a scheme of an Elevator with weather regulation is proposed and comparative results of a study of the temperature of the return pipeline with and without regulation are presented. An Elevator with weather control adjusts the temperature relative to the outside air temperature, while a heat point with a classic Elevator returns water to the main line with a constant, higher temperature. The estimated savings from the implementation of the event Elevator with weather control in the building of the administrative building No. 10 in physical terms amounted to 71.13 Gcal, and in monetary terms 124,828 thousand rubles. the payback Period of this event was 1.3 years.

Keywords: Elevator, weather control, heating system, controller, pump, valve, sensor, temperature, heat energy, tariff

The article presents the results of a study of the deflections of a monolithic flat floor with a different grid of columns with prestressed reinforcement without adhesion to concrete. To analyze the deflections, numerical studies of slabs with different rectangular columns and thicknesses were performed. The studies were performed using the LIRA CAD software package. The aspect ratio of rectangular cells of monolithic flat floors is determined, for which the application of prestressing is ineffective on the short side of the cell or most effective on the long side. It was revealed that the use of high-strength reinforcement of the "monostrand" type is most effective for a grid of columns 5x9m from the volume of the studied cell sides. It was found that the application of post-tension on the short side of the slab cell practically does not affect the total deflection of the cell - with the aspect ratio a / b> 1.2. The conclusion is drawn about the increase in the efficiency of using contour reinforcement with an increase in the deflections that affect the amount of rope repulsion. The results can be used in the design of slabs using prestressed reinforcement without adhesion to concrete of the "monostrand" type.

Keywords: rope, high-strength reinforcement, finite element, monostrand, repulse, prestressing, post-stressing, deflection

The article provides a technical solution to increase the bearing capacity and reduce the deformability of the subsiding base of a house. The design features of the fixed base and enclosing rows of bored piles are described. The article was published in the framework of the program of the International Forum "Victorious may 1945".

Keywords: row, anchoring grounds, reinforcement, soil, cement, cementation, directional hydraulic fracturing

In this paper, research on the development of methods for the production of thermoplastic elastomers for construction purposes based on styrene-butadiene-styrene rubber filled with expanded perlite, studied the performance characteristics of these materials. Various methods for the modification of thermoplastic elastomers, their processing modes and methods of controlling their properties are considered.

Keywords: thermoplastic elastomers, expanded perlite, production methods, material characteristics, density, physical and mechanical properties

The paper describes the implementation of a fiber-optic single-channel vibration sensor built on the basis of two fiber Bragg gratings, a broadband source, a photodetector and a sound card of a computer used as an ADC

Keywords: vibration, fiber optic sensor, fiber Bragg grating, Fourier transform

In this article the scheme solution of a heating system by a floor with use of the heat exchanger-supercharger is offered and comparative results of research of a heat transfer coefficient of a surface of heat exchange of the offered system of heating of a floor with traditional are resulted. As a result of the study, the parameters characterizing the operation of the floor heating system were determined. With the established mode of operation of the floor heating system, the heat transfer coefficient of the heat exchange surface is 15% higher than with the traditional one.enterprise.

Keywords: Underfloor heating, heating, coolant, shock unit, temperature, hydraulic shock, pipeline, air, heat exchanger-blower, pump, leakage

The optimum coefficients for the use of materials for combined beams in a wide range of loads are obtained in the article. The principles of designing and calculating the strength of Steel Reinforced Concrete slabs are outlined in accordance with SR 266.1325800.2016 ""Steel Reinforced Concrete Structures. Design rules"". Strength calculations are performed, the results of a numerical experiment are compared and analyzed. The optimal utilization factor of materials obtained in accordance with the specified regulatory document was established. The results obtained can be used in the design of combined beams of different cross-sections and spans. The purpose of this study is to find the optimum reinforcement of the floor beams. To strengthen the proposed installation of prestressed reinforcement in the lower girdle of the beam, which increases the strength and reduces the deflections of the beams. In such ceilings, the bending moment from external loads is distributed between the structural elements: the beam and the reinforced concrete overlap, in accordance with the ratio of the stiffnesses of these components. As a result of the study, the optimal diameters of prestressed reinforcement for steel beams by spans from 6 to 9 m were determined and for the calculated linear load from 5 to 30 kN/m. The proposed reinforcement option allows to increase bearing capacity, reduce deflections, reduce labor costs for building reconstruction, and also increase the reliability and durability of the structure.

Keywords: Steel reinforced concrete, floors, combined beams, profiled sheet, coefficient of use of materials

The article describes the design solution for the device of enclosing rows of bored piles and pile-anchors, ensuring the stability of the walls of the pit in the construction of structures under construction and excluding their influence on the adjacent structures. The results of calculations of the enclosing series are presented..The article describes the design solution for the device of enclosing rows of bored piles and pile-anchors, ensuring the stability of the walls of the pit in the construction of structures under construction and excluding their influence on the adjacent structures. The results of calculations of the enclosing series are presented.

Keywords: pile a row, the CFA piles-anchors, the fence of the pit

The complexity and high cost of multiplexing optical fiber sensors is still the main limitation for the widespread introduction of sensory systems, both distributed and quasi-distributed, and point-like. The article proposes a new multiplexing method that takes advantage of both broadband and two-frequency radio-photon multiplexing systems. The simplest broadband radiator is taken from the first, but a complicated and expensive system of spectrometry is not used to determine the central wavelength of fiber Bragg gratings. From the second, a recording system is used at the beat frequency between two components, but an expensive system for generating two- and polyharmonic probing systems is not used. The multiplexing parameter is determined by the frequency of separation between the transparency windows of a fiber Bragg grating, for example, with two phase π-shifts, which differs by a certain value for each of the sensors. The mechanism of modeling of gratings of the specified type is given, in principle the possibility of multiplexing of various number of sensors is shown. When using sensor networks built on the basis of passive optical, the number of multiplexed sensors can reach 256, with all sensors having the same Bragg wave of the wave, and can be combined into tree, bus and other topologies.

Keywords: fiber Bragg grating, phase inhomogeneity, fiber optic sensor, multiplexing, transparency window, frequency difference between transparency windows, beat frequency