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Dive into the research topics where Y. Ribakov is active.

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Featured researches published by Y. Ribakov.


Mechanics of Advanced Materials and Structures | 2012

Laboratory Tests of Two-Layer Beams Consisting of Normal and Fibered High Strength Concrete: Ductility and Technological Aspects

Klaus Holschemacher; Iakov Iskhakov; Y. Ribakov; T. Mueller

General concepts for the design of two-layer beams, consisting of fibered high strength concrete in a compressed zone and normal strength concrete without fibers in the tensile one, were developed about 2 years ago. It was shown that such beams are effective when the reinforced concrete (RC) section carries rather big bending moments. Steel fibers have little effect on beams’ elastic deformations, but increase the ultimate ones, due to the additional energy dissipation potential of fibers. Changing the fibers’ content, a required ductility level can be achieved. Providing proper ductility is important for design of structures to seismic, wind, and other dynamic loadings. The idea of two-layer beams was further developed for pre-stressed beams that become, in this case, high performance concrete elements. It was demonstrated that calculation of fibers’ content for such elements is important, like that of reinforcing steel bars for usual RC beams. The current study is focused on finding optimal fiber content, yielding the highest Poisson coefficient, and consequently higher ductility of the beams section. Fiber weight ratio is used as an alternative to fiber volume ratio as the first is a more accurate parameter for the definition of fiber content in the concrete mixture. Additionally, manufacturing technology and its influence on distribution of fibers in the beams cross sections were investigated, as this distribution has a direct influence on the sections ductility. The experimental results, obtained in the frame of this study, form a basis for general technological provisions, related to manufacturing of two-layer beams.


Construction and Building Materials | 2012

Using mathematical modeling for design of self compacting high strength concrete with metakaolin admixture

L. Dvorkin; A. Bezusyak; N. Lushnikova; Y. Ribakov


Structural Design of Tall and Special Buildings | 2011

A method for design of seismic resistant structures with viscoelastic dampers

Y. Ribakov; G. Agranovich


Structural Design of Tall and Special Buildings | 2009

Using seismic isolation columns for retrofitting buildings with soft stories

V. Briman; Y. Ribakov


Earthquake Engineering and Engineering Vibration | 2010

Reduction of Structural Response to Near Fault Earthquakes by Seismic Isolation Columns and Variable Friction Dampers

Y. Ribakov


Structural Design of Tall and Special Buildings | 2011

Control of structural seismic response by a limited set of active dampers

Y. Ribakov; G. Agranovich


Structural Design of Tall and Special Buildings | 2011

Using viscous and variable friction dampers for improving structural seismic response

Y. Ribakov


Structural Design of Tall and Special Buildings | 2011

Base‐isolated structures with selective controlled semi‐active friction dampers

Y. Ribakov


Structural Control & Health Monitoring | 2004

A method for fast simulation of seismically excited active controlled MDOF structures

G. Agranovich; Y. Ribakov; B. Blostotsky


Structural Design of Tall and Special Buildings | 2014

Collapse analysis of real RC spatial structures using known failure schemes of ferro-cement shell models

I. Iskhakov; Y. Ribakov

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Klaus Holschemacher

Leipzig University of Applied Sciences

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T. Mueller

Leipzig University of Applied Sciences

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