Magazine of Civil Engineering, No.1(77), 2018
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S.V. Solskiy, N.L. Orlova, A.S. Velichko
The article presents the results of the analysis of seepage flow
character in an embankment dams with impervious diaphragm made of
claycement concrete, using the Gotsatlinskaya HPP as an example. The
process of slits colmatage was considered in the claycementconcrete
diaphragm (CCCD), that be caused in the zone of tensile forces or by
seismic actions. 

B.I. Giyasov, V.I. Ledenyov, I.V. Matveeva
The
paper offers a combined method for calculation of energy
characteristics of such fields; specular reflected energy is calculated
by ray tracing, and diffusely scattered one is calculated by a
numerical energy method. The paper describes the basic principles for
making the combined design model and offers scattering factors of
reflexible sound energy that are necessary for the implementation of
design model and were obtained from experiments and calculations. The
accuracy of the combined method was assessed by a comparative analysis,
and experimental and calculation data in production facilities of
various proportions. 

Yu.Ya. Tyukalov
The
solution of the plane problems of elasticity theory on the basis of
stress approximation is considered. To construct the solution, the
additional energy functional is used. With the help of the principle of
possible displacements, algebraic equations of equilibrium of the nodes
of the grid of finite elements are constructed. Equilibrium equations
are included in the functional of additional energy by means of
Lagrange multipliers. 

M.V. Gravit, O.V. Nedryshkin, O.T. Ogidan
The
paper presents the results of tests for fire resistance of samples of
fire curtains. The ability of intumescent formulations to effectively
prevent the spread of heat has been studied. The article presents the
results of testing various compositions of Intumescent fire retardant
coating (IFRC) with the addition of latex for fire curtains based on
silica fiber. 

M.R. Petrichenko, D.V. Nemova, E.V. Kotov, D.S. Tarasova, V.V. Sergeev
The
purpose of this article is development of the theory of heat and mass
transfer in capillaryporous media, air flows and building structures.
The engineering purpose is ā concept development of a closed
ventilating circuit with convective heat flow to reduce the pressure on
the environment, improve the comfort of the building and reduce
operating costs. 

V.N. Kabanov
Construction projects of buildings and structures, as well as plans of
construction and installation works are often subjected to fair
criticism from the Proproducers of the work. Such criticism is that
the calculated cost value and long lastingSTI CMP does not take into
account the specificity of real contractors. 

O.A. Tusnina,
Finite
element analysis of the crane secondary truss of topblown oxygen
vessel plant with the span of 36m is considered in the paper. Analysis
of crane secondary truss is quiet difficult because of necessity of
taking into account actual stiffness of its joints and also because of
the fact that lower belt of truss made of thinwalled closed profile is
experiencing restrained torsion because of eccentrically crane load
acting. 


V.I. Travush, D.V. Konin, A.S. Krylov
The
strength of reinforced concrete beams made of highperformance concrete
and fiber reinforced concrete was evaluated in a purebending test. The
efficiency of using straight steel fiber in bending structures was
evaluated. The fracture pattern of models was described. 


M.M. Mirsaidov, T.Z. Sultanov, R.A. Abdikarimov,
The paper provides the methods for evaluating the strength parameters
of earth dams under forced oscillations. The methods of solving the
problem are based on the expansion of sought for solution in terms of
eigenmodes of elastic structure oscillations. 


P.S. Barashkova, L.M. Molodkina
Comparative study of the backflushing and chemical regeneration after
natural water filtration using standard 12μmthick tracketched
membrane and new 20μmthick irradiated on both sides (with argon
ions with the mileage less than the film thickness) was performed. 


L.V. Zakrevskaya, A.A. Gavrilenko, S.N. Avdeev, I.A. Gandelsman, A.V. Kireev
The focus in the release of construction materials is determined by
waste recycling, saving energy costs and environmental management by
means of reducing dump areas. The production of magnesia binders from
dolomite waste meets all these requirements. 


M.R. Petrichenko, E.V. Kotov, D.V. Nemova, D.S. Tarasova, V.V. Sergeev
The aim of the work is to determine the velocity of air flow in the gap
of a ventilated facade with different width of the gap, the height of
the building and climatic conditions by the method CFD (Computational
Fluid Dynamics)  simulation of convective heat flux. 


V.V. Terleev, A.O. Nikonorov, R.S. Ginevsky, V.A. Lazarev, I.
Togo, A.G. Topaj, K.G. Moiseev, V.A. Pavlova, K.A. Layshev, M.V.
Arkhipov, A.Yu. Melnichuk, I.A. Dunaieva, W. Mirschel
Designing of underground constructions, such as irrigation and drainage
systems, requires engineering surveys. Such surveys include the study
of the hydrological conditions of the territory, which are determined
by the hydrophysical properties of soils, such as their waterretention
capacity. 