A comprehensive procedure for estimating the stressed-strained state of a reinforced concrete bridge under the action of variable environmental temperatures

Kovalchuk, Vitalii; Onyshchenko, Artur; Fedorenko, Olexander; Habrel, Mykoła; Parneta, Bogdan; Voznyak, Oleg M.; Markul, Ruslan; Parneta, Маriana; Rybak, Roman

doi:10.15587/1729-4061.2021.228960

Cited by 12 publications

(7 citation statements)

References 9 publications

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“…The study of the temperature field in a three-layer model (defective ferroconcrete pipe reinforced with a metal corrugated structure) [20] has established the nonuniformity of temperature distribution across the layers, which leads to a contact effect defined by non-ideal conditions of heat exchange at the junction between the layers. Similar calculation outcomes of temperature fields have been achieved in the studies on multilayered bridge structures [21,22].…”

Section: Literature Reviewsupporting

confidence: 74%

“…These papers mainly deal with the heating of the solid through the coating, with the issues of head conduction over the coating and exchange of heat with the solid and the ambient environment not being elaborated on. Papers [20][21][22] present temperature distributions in piecewise inhomogeneous solids and estimate their impact on the strength of structural elements. The study of the temperature field in a three-layer model (defective ferroconcrete pipe reinforced with a metal corrugated structure) [20] has established the nonuniformity of temperature distribution across the layers, which leads to a contact effect defined by non-ideal conditions of heat exchange at the junction between the layers.…”

Section: Literature Reviewmentioning

confidence: 99%

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Temperature field of metal structures of transport facilities with a thin protective coating

Gera¹,

Kovalchuk²,

Dmytruk³

2022

Math. Model. Comput.

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A study of the temperature field in metal structures of transport facilities with corrosion-resistant coating under the conditions of changes in ambient temperature has been conducted. The results of experimentally determined temperature distribution in the surface vicinity of a galvanized metal sheet are presented. The data were obtained over the day at positive and negative surface temperatures. Given a generalized boundary condition for the heat conduction problem, with a solid heated by a localized heat flow through a thin coating, there has been obtained and analyzed a temperature field. The temperature distribution across the surface outside the heating region during heat propagation along the coating was analyzed. Experimental data and model calculations, as well as temperature calculations allowing for the coating and not, have been compared. It has been established that the effect of coating on the temperature distribution in the metal structure, when the solid is heated by a localized heat flow through a thin coating, is insignificant.

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Section: Literature Reviewsupporting

confidence: 74%

Section: Literature Reviewmentioning

confidence: 99%

Temperature field of metal structures of transport facilities with a thin protective coating

Gera¹,

Kovalchuk²,

Dmytruk³

2022

Math. Model. Comput.

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“…The influence of temperature on the stressed state of bridges is described in [15]. It was established that at the border of various metal beams and reinforced concrete slabs there is a jump in temperature stresses.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining the residual service life of polymer-modified asphalt concrete pavement on road bridges

Onyshchenko,

Kovalchuk,

Zagorodniy

et al. 2023

EEJET

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The object of research is the asphalt pavement of road bridges. Its residual period was assessed taking into account the joint effect of the ambient temperature and vehicles. It has been established that a set of negative factors affects the reduction of the service life (residual resource) of asphalt pavement on bridges. These include different modulus of elasticity of reinforced concrete base and asphalt pavement and the difference in coefficients of linear thermal expansion. As well as loads from the wheels of vehicles, temperature fluctuations, alternating freezing-thawing of water in pores and damaged places. It was found that one of the reasons for reducing the residual life of asphalt pavement on reinforced concrete road bridges is the insufficient study and use of polymers in order to adjust the properties of asphalt concrete. Taking into account the joint influence of temperature and transport in assessing the crack resistance of asphalt pavement on reinforced concrete road bridges would allow a more objective assessment of the residual life of such coatings and their service life. Arrangement of asphalt pavement with improved properties, due to polymeric latex, could increase its residual life. This, in turn, would lead to a reduction in costs for the repair and maintenance of not only asphalt pavement but also the road bridge as a whole

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“…The studies carried out [2,7,[10][11][12][13][14][15][16][17][18][19] identified the main prefabricated units and parts that fail: engine, gearbox, synchronizer, vibration exciter, propeller shafts, couplings, photographs of such failures are shown in Fig. 7.17.…”

Section: Research Of Indicators Of Reliability Of Technical Systemsmentioning

confidence: 99%

Study of reliability of technical systems reliability

Nazarenko

Делембовський

Dedov

et al. 2021

Dynamic Processes in Technological Technical Systems

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The main states of reliability of a technical system and its elements are investigated by the example of vibration platforms for compacting concrete mixtures. Experimental studies on the development of vibration platforms for failure have been carried out. Complex indicators were used, which were the coefficient of technical utilization, the coefficient of availability and durability. The received data of malfunctions was made by fixing by groups of prefabricated units, parts and elements to determine the data on their operating time. Based on these data, the analysis of the operating time of the main elements to failure and the most frequently out of order was carried out. The conducted research identified the main prefabricated units and failing parts: engine, gearbox, synchronizer, vibration exciter, propeller shafts, couplings. At the same time, propeller shafts and couplings most often failed. In some cases, the destruction of bearings in vibration exciters has been evidenced. The parameters of the Weibull distribution law have been determined and graphs have been constructed for the model of reliability and failures of propeller shafts of vibration platforms. A graph of the dependence of reliability on the operating time and graphs of the regularities of the distribution of resource indicators and the distribution function, which served as information for the development of recommendations, were built.

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A comprehensive procedure for estimating the stressed-strained state of a reinforced concrete bridge under the action of variable environmental temperatures

Cited by 12 publications

References 9 publications

Temperature field of metal structures of transport facilities with a thin protective coating

Temperature field of metal structures of transport facilities with a thin protective coating

Determining the residual service life of polymer-modified asphalt concrete pavement on road bridges

Study of reliability of technical systems reliability

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