Bearing capacity and rigidity of short plastic-concrete-tubal vertical columns under transverse load

Dolzhenko, A. V.; Naumov, A. E.; Shevchenkо, A. E.

doi:10.1088/1757-899x/327/4/042024

Cited by 7 publications

(5 citation statements)

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“…Авторами ранее были исследованы прочностные и деформативные характеристики ПТБ элементов, работающих на вертикальные нагрузки, представляющих собой заполненные тяжелым бетоном полипропиленовые и полиэтиленовые трубы технического назначения, распространенные в инженерном строительстве. Экспериментальные исследования при центральном сжатии коротких ПТБ стоек наружным диаметром 110 мм и высотой 400 мм, заполненных бетоном класса В15, с ручным уплотнением бетона заполнения показали существенное (до 35 %) увеличение прочности заключенного в трубу бетона по сравнению с кубиковой того же класса вместе с высокой степенью сплошности и монолитности бетона ядра [1,2,3,4].…”

Section: численные исследования напряженно-деформированного состояния пластикотрубобетонного центрально-сжатого короткого стержняunclassified

Numerical Researches of the Stressed-Strained State of Plastic Tubed Concrete Pier Under Central Compression Load

Долженко¹,

Naumov²,

Шевченко³

et al. 2018

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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Numerical Researches of the Stressed-Strained State of Plastic Tubed Concrete Pier Under Central Compression Load

Долженко¹,

Naumov²,

Шевченко³

et al. 2018

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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“…Previously, the authors investigated the strength and deformative characteristics of PCT elements, which are polypropylene and polyethylene tubes for technical purposes filled with heavy concrete, which are common in engineering construction. Experimental studies with central compression of short PCT columns with an outer diameter of 110 mm and a height of 400 mm filled with class B15 concrete, with manual compaction of concrete filling showed a significant (up to 35%) increase in the strength of concrete embedded in a tube compared to cubic of the same class together with high the degree of continuity and solidity of the concrete core [5,6,7]. The conducted literary search showed that the work of bent polymer-tube-concrete constructions has been little studied and requires numerical and experimental studies.…”

Section: Introductionmentioning

confidence: 99%

Strength and Deformation of Bendable Plastic-Concrete-Tubal Structures

Dolzhenko

Naumov

Klyuev

et al. 2019

MSF

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In modern construction production, structures with the use of tube concrete elements are increasingly used [1]. The use of such structures can significantly reduce the weight of the building, as well as reduce the cost of construction and installation works by 2-3 times compared with similar structures made of classical reinforced concrete. At the same time, labor costs are reduced by 4–5 times. In comparison with metal structures, the cost is significantly reduced and the steel consumption is reduced by a factor of 2–3 with a slight increase in weight. Currently in our country the use of tube concrete structures is not widespread due to insufficient study of their work under various influences. The tube in tube concrete structures simultaneously plays the role of a shell, as well as longitudinal and transverse reinforcement. For a classic tube concrete, the tube is able to perceive the resulting forces from different angles and in all directions. Concrete in the plastic tube, being in conditions of triaxial compression and withstands stresses considerably exceeding the cube and prism strength of concrete. In such structures, the tube prevents the formation of microcracks in the concrete core.

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“…Previously, the authors suggested using plastic pipes as a shell for tube concrete columns and justified the possibility of using centrally compressed pipe concrete elements as a shell for low compressive loads [3] while maintaining the main advantages of classic tube concrete. The early works of the authors [4,5] addressed issues of rationality of using short PCT columns as resource efficient structures in civil engineering and methodological aspects of quantitative analysis of the stress-strain state of structures taking into account the factors of actual work under load and experimentally determined physical and mechanical properties of PCT materials.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies of the Parameters of the Contact Problem in the Design of Plastic Tube Concrete Structures

Dolzhenko

Naumov

Klyuev

et al. 2019

MSF

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The article presents numerical studies of the stress-strain state of the centrally compressed short plastic-concrete-tubal vertical constructions (PCT). The authors experimentally obtained and analyzed the effect of friction on the boundary between the layers of the concrete core and the plastic tube on the stress-strain state of the PCT vertical constructions. The need to carry out these studies is associated with a deficiency of theoretical and numerical studies of this phenomenon, including for the traditional pipe concrete in a steel tube. In this regard, mathematical modeling and the creation of engineering methods for calculating the PCT based on the study of the factual joint operation of the concrete core and the cylindrical plastic shell has significant scientific potential. The calculations and experimental analysis demonstrated the validity with engineering accuracy of using the mathematical model of a short PCT column for engineering calculations and structural analysis. It has been established that the use of an analytical model makes it possible to investigate the influence of the variation of the physical and mechanical characteristics properties of the materials of the core and tube of the PCT on the parameters of the stress-strain state design and to carry out a rational design of the PCT elements in the structures of civil and industrial buildings with reference to the materials actually used widely represented in the market.

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Bearing capacity and rigidity of short plastic-concrete-tubal vertical columns under transverse load

Cited by 7 publications

References 0 publications

Numerical Researches of the Stressed-Strained State of Plastic Tubed Concrete Pier Under Central Compression Load

Numerical Researches of the Stressed-Strained State of Plastic Tubed Concrete Pier Under Central Compression Load

Strength and Deformation of Bendable Plastic-Concrete-Tubal Structures

Experimental Studies of the Parameters of the Contact Problem in the Design of Plastic Tube Concrete Structures

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