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RISS 인기검색어
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- 저자 : ( Aleksandr Sokolov ) (검색결과 2 건)
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Factors and Tendencies in the Development of Protest Activities in Russia
( Aleksandr Sokolov ) 한국외국어대학교 러시아연구소 2012 슬라브연구 Vol.28 No.2
The paper considers the protest activity in Russia. The research conducts the survey data experts from 22 regions of Russia. The article examines the growth dynamics of protest activity. The author identifies the causes and factors of protest activity. The article highlighted the regional characteristics of protest activity. The influence of acts and omissions of the authorities on the formation and development of protest activity is characterized. The paper is assessment of the prospects of protest activity in the country.
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Curvature-based analysis of concrete beams reinforced with steel bars and fibres
Gintaris Kaklauskas,Aleksandr Sokolov,Ashkan Shakeri,Pui-Lam Ng,Joaquim A.O. Barros 국제구조공학회 2022 Structural Engineering and Mechanics, An Int'l Jou Vol.81 No.3
Steel fibre-reinforced concrete (SFRC) is an emerging class of composite for construction. However, a reliable method to assess the flexural behaviour of SFRC structural member is in lack. An analytical technique is proposed for determining the moment-curvature response of concrete beams reinforced with steel fibres and longitudinal bars (R/SFRC members). The behaviour of the tensile zone of such members is highly complex due to the interaction between the residual (tension softening) stresses of SFRC and the tension stiffening stresses. The current study suggests a transparent and mechanically sound method to combine these two stress concepts. Tension stiffening is modelled by the reinforcement-related approach assuming that the corresponding stresses act in the area of tensile reinforcement. The effect is quantified based on the analogy between the R/SFRC member and the equivalent RC member having identical geometry and materials except fibres. It is assumed that the resultant tension stiffening force for the R/SFRC member can be calculated as for the equivalent RC member providing that the reinforcement strain in the cracked section of these members is the same. The resultant tension stiffening force can be defined from the moment-curvature relation of the equivalent RC member using an inverse technique. The residual stress is calculated using an existing model that eliminates the need for dedicated mechanical testing. The proposed analytical technique was validated against test data of R/SFRC beams and slabs.
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