Security and destruction of technical systems

Varlamov, A A; Rimshin, Vladimir; Tverskoi, S Y

doi:10.1016/j.ifacol.2018.11.190

Cited by 28 publications

(11 citation statements)

References 1 publication

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“…According to the results of consideration of acquaintance with modern options for the improvement of embankments, a tendency emerges there to create a certain compositional plan inseparably related to comfort and multifunctionality [10].…”

Section: Resultsmentioning

confidence: 99%

Methodical Approaches to the Development of Embankment Arrangement Projects

Danilchenko

Kas'yanov

2019

E3S Web Conf.

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the main research question is the problem of methodological approaches to the development of embankment arrangement projects. Recently, in our country, great importance has been attached not only to the improvement or reconstruction of embankments, but also to comprehensively addressing many issues, such as the preservation of the historical heritage of our culture, ecology, safety, economy, multifunctionality, etc. The aim of the study is a systematic integrated approach to solving the tasks of arranging embankments, the proposed systems perform several functionals at once and allow to solve environmental, technical, aesthetic and economic problems. To solve the problem of arranging embankments, normative documents, domestic and foreign experience, innovative technologies, modern materials and advanced methods for improving embankments were studied.

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Section: Resultsmentioning

confidence: 99%

Methodical Approaches to the Development of Embankment Arrangement Projects

Danilchenko

Kas'yanov

2019

E3S Web Conf.

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“…The damage effect to the support nodes of beams and columns on the power resistance. The effect of node damage (changes in boundary conditions) is illustrated on the main elements of building frames -beams and columns [17][18][19][20][21][22][23][24][25].…”

Section: Wherementioning

confidence: 99%

“…The beam B-1 bending moments in pinching equal: (19) mid-span (20) and the angle of the reference section rotation is zero. The beam B-2 bending moments are described by the equation 21which leads to the calculation of the reference moments (22) and mid-span moments (23) wherein the angle of the reference section free rotation (24) It follows that the beam B-1 without destruction can perceive as a uniform load (25) and beam B-2, respectively (26) that is half as much. Thus, if the B-1 beam will lose the ability to perceive the supporting moments due to damage to the supporting sections, and the beam itself will receive an articulated design scheme, then the resource of its bearing capacity will be reduced by half.…”

Section: Wherementioning

confidence: 99%

Reserves and exposure assessment of reinforced concrete structures safety while reducing its power resistance

2019

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Structural safety of buildings is such an engineering state of the structures operability, foundations, the features of their joint power resistance to expected loads and impacts, taking into account their possible combinations in direction, intensity and mode, which ensures the established functional use with established reliability. The structural safety of buildings depends on design, on compositional and structural solutions, technological measures during construction and operation, which must be provided at all stages of the facility’s existence (construction, operation, repair, reconstruction, dismantling and dismantling). It is necessary to take into account the structural safety parameters of reinforced concrete structures that have received corrosion damage during solving the problems of construction and reconstruction of buildings and structures. Suggestions to quantify the reserves and exposure of structural safety and, accordingly, the reduction in power resistance of corrosion-damaged reinforced concrete structures are presented in this article.

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“…Steel shell -polymer concrete. Evaluation and calculation of the resource of building structures is currently given special attention [7][8][9][10]. An assessment of the work of an integrated design is most efficiently carried out on the basis of the energy theory of degradation [11,12].…”

Section: Introductionmentioning

confidence: 99%

The theory of degradation for polymer concrete in complex stress state

2019

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The article discusses the features of the application of the theory of degradation to the work of an integrated structure operating in a complex stress state. The analysis of the work of an integrated structure consisting of a steel shell filled with concrete (core structure). Based on the analysis of the construction work, we obtained the relations connecting the deformations of the steel shell and the polymer concrete core of the complex structure. The obtained relations made it possible to apply the diagrams of concrete work for uniaxial compression to analyze the possibility of using concrete as a core of an integrated structure. Experimental studies of the polymer concrete core of the structure were conducted. In total, ten concrete compositions were made and investigated. The compositions of concrete differed in cementitious: cement and polyester resin. As a filler used sand, gravel, ground clay, marble flour, soda and fine mineral fibers. Samples were tested for central and eccentric compression. During the tests used the methods used in testing cement concrete. As a result of the tests, complete schedules of the work of materials for uniaxial compression were obtained. The analysis of the energy characteristics of concrete schedules based on the theory of degradation is carried out. As a result of the discussion of the results obtained, conclusions are drawn about the possibility of using polymer concrete as the supporting core of an integrated structure with an external steel shell.

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Security and destruction of technical systems

Cited by 28 publications

References 1 publication

Methodical Approaches to the Development of Embankment Arrangement Projects

Methodical Approaches to the Development of Embankment Arrangement Projects

Reserves and exposure assessment of reinforced concrete structures safety while reducing its power resistance

The theory of degradation for polymer concrete in complex stress state

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