Magazine of Civil Engineering, No.8(76), 2017
S.H. Bayramukov, Z.N. Dolaeva
Research in the area of dynamic programming in optimization of
comprehensive housing stock modernization has shown that there are a
number of important issues that require effective and rapid solutions.
The purpose of
research is the organization of repair and construction works by
modeling the organizational and technological solutions to the use of
energy-saving technologies for the comprehensive modernization of the
M.B. Kitain, K.I. Strelets, M.V. Petrochenko
spatter properties and ways of spatter formation were analyzed in the
article. It was deter-mined that solidified spatter can be considered
as an active agent in environment pollution due to high dispersion, and
there is a mass excess comparing with spatter spray.
V.A. Rybakov, M. Al Ali, A.P. Panteleev, K.A. Fedotova, A.V. Smirnov,
the article as an alternative îf strengthening of existing rafters or
replacing them by new timber elements there is an offer to consider the
replacing timber rafters by elements of steel thin-walled structures
(STWS). The authors have proposed the methodology for calculation the
statically indeterminate frame structures with the use of force method.
M.P. Fedorov, A.N. Chusov, V.I. Maslikov, D.V. Molodtsov, I. Togo
authors propose the simulation models of river flow management during
extreme river discharges for à hydro complex with a hydroelectric power
plant (HPP) on a main river and a flood control facility on its side
tributary, including the case of their joint operation as part of a
system of flood control facilities distributed on a drainage basin.
J.C.L. Castro, D.D. Zaborova, T.A. Musorina, I.E. Arkhipov
paper is focused on having a different approach to energy efficiency
and the way it is employed in industry. It considers the real case of
Latin-America where normal temperature during day drastically changes
from 0 to 25 degrees.
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N.I. Vatin, A.Yu. Ivanov, Y.L. Rutman, S.A. Chernogorskiy, K.V. Shvetsov
article deals with an economic optimization problem of structures
designed on areas exposed to seismic hazard. Profit
(cost-effectiveness) from building usage due its design life-cycle is
considered as objective function in this optimization task. Building
damage state evaluation procedure and repair cost estimation method are
proposed in this study.
T.V. Bobrova, P.M. Panchenko
of spatial-time modeling to the rate setting of operational sequence is
a practical way to reduce the labor required for this work without
losing any accuracy and authenticity of the results was analyzed. The
methodology provided the analytical algorithm of rate calculation in MS
Excel is synchronized with the visualization of operational sequence in
Y.U. Albert, A.A. Dolgaya, T.V. Ivanova, O.P. Nesterova, A.M.
Uzdin, J. Guan, D.À. Ivashintzov, O.K. Voronkov, V.B. Shtilman, S.G.
Shulman, A.A. Khrapkov
The subject of investigations is seismic input models for tuned mass
damper designing. Some features of simulating design accelerograms for
estimating seismic stability of a structure with a mass damper are
N.K. Yerzhanova, Zh.A. Mussin, S.K. Dzholdasov, N.N. Bakbergenov
Authors offer a device that is designed to finding critical section and
critical depth in open flows which are defined by consecutive
measurements of dynamic pressure and depth of flow by means of the
device in various cross sections and section findings where the dynamic
pressure is equal to a half of flow depth, and depth is critical depth,
i.e. equality is observed.
V.N. Smirnov, E.B. Shestakova, S.V. Chizhov, A.A. Antonyuk, L.A. Lediaev, I.A. Indeykin, E.S. Evtukov
To ensure reliable and safe operation of the bridge structure
throughout the life cycle, it is necessary to analyze and take into
account many important factors, including the interaction of the main
load-bearing structures. The presented work has new theoretical
information, which gives the main provisions in the field of design of
artificial structures for high-speed railroads.
Tangential and normal stresses are arises foundation area from the
frost heave process. Currently known is the analysis of the tangential
stresses based on adfreezing of the frozen soil to the lateral surface
of foundation. However, the differences in values of normal stresses
may be due to the fact that no single approach to normal stress
evaluation has been developed yet.
Dz. Grasmanis, D.O. Sovetnikov, D.V. Baranova
The target of this paper is assessment the suitability of CEN standards
for the calculation of energy performance of the domestic hot water
systems and search for the optimal solutions (methods and default
values) for Latvian conditions.
The resolving equations were obtained and a calculation technique was
developed with allowance for the nonlinear creep of three-layer plates
and shallow shells with a lightweight filler. The problem was reduced
to a system of three differential equations with respect to the stress
function, displacement and deflection function.
M.P. Kuz'min, L.M. Larionov, V.V. Kondratiev, M.Yu. Kuz'mina, V.G. Grigoriev, A.S. Kuz'mina
In the course of laboratory research, which included optical
crystallography, there have been established the reasons accounting for
the extent of burnt rock activity when in contact with cement during
the cement stone formation. The benefit of the burnt rock as an active
mineral additive, compared to the fly ash used by the cement plants,
was confirmed as well.
I.N. Serpik, A.V. Alekseytsev, P.Yu. Balabin, N.S. Kurchenko,
An algorithm for discrete optimization of steel flat rod systems was
developed on the basis of an evolutionary search. The task is to
minimize the weight of the bars via taking into account constraints on
stresses, displacements, and overall stability. The cross-sectional
dimensions of the bars and the coordinates of their node connections
A.V. Bushmanova, Yu.G. Barabanshchikov, K.V. Semenov, A.Ya. Struchkova, S.S. Manovitsky
The article deals with the research of the thermal cracking resistance
of massive concrete and reinforced foundation slabs of buildings and
structures in the building period. The article examines the results of
the analysis of the thermal stress state of a massive foundation slab
with a fixed thickness of thermal insulation as well as the results of
changing the minimum thickness of the insulation on a surface,
providing the cracking resistance of the structures on different plate
heights, with and without taking into account the hardening temperature
influence on the concrete modulus of the deformation.
A.V. Chechevichkin, N.I. Vatin, V.V. Samonin, M.A. Grekov
A new material is proposed for complex purification of hot water from
iron and hydrogen sulphide – natural zeolite modified by
manganese dioxide. It has been shown experimentally that this filtering
material has high efficiency of water purification from iron and
hydrogen sulphide, low mechanical degradability during operation, as
well as low water consumption for washing during regeneration of the
E.A. Loktionova, D.R. Miftakhova
The aim of the work is to determine the influence of the clogging
degree of the pipeline on its throughput. This paper describes the
results of hydraulic tests of a pressure pipeline with clogging of two
types: expanded clay gravel and medium-grained sand.
M.V. Sukhoterin, S.O. Baryshnikov, T.P. Knysh
The paper focuses on obtaining numerical results for a rectangular
Reissner plate with clamped contour under the influence of a uniform
load using the iteration superposition method of four types of
trigonometric series (correcting functions). The initial function of
bendings is selected as a quartic polynomial which turns into zero on
the contour and is a specific solution to the main bending equation.
Kh.V. Il'ina, N.M. Gavrilova, E.A. Bondarenko, M.Ju. Andrianova, A.N. Chusov
Water samples from streams in suburban region of new builds were
analyzed in order to suggest methods and parameters for pollution
monitoring. Concentrations of total nitrogen (TN) varied from 0.6 to
9.0 mg/L, ammonium – from 0 to 6.8 mg/L, total organic carbon
(TOC) from 8.3 to 21.1 mg/L.
S.G. Srungeri, N.N. Alekseev, I.A. Kovalenko, O.N. Stolyarov
Predicting the creep behaviour of geosynthetics is very important for
determining the design life of geosynthetic based structures. In this
paper, geogrids and geotextiles made of two major types of synthetic
polymer namely, polyester and polypropylene were investigated for
accelerated creep test. In short-term measurements, creep was
accelerated by temperature in equal steps.
I.A. Indeykin, S.V. Chizhov, E.B. Shestakova, A.A. Antonyuk, E.S. Evtukov, K.N. Kulagin, V.V. Karpov, G.D. Golitsynsky
In the article the analysis of factors is produced influencing on the
possible loss of dynamic stability of bars of the latticed truss under
act of kinematics indignations of ends of bar at the general vibrations
of flight structure caused by dynamic factors accompanying moving of
the temporal loading on a bridge.
A.V. Benin, A.S. Semenov, S.G. Semenov, M.O. Beliaev, V.S. Modestov
The methodology for identification of mechanical characteristics of the
nonlinear material model for concrete, taking into account the
elastic-plastic deformation and the damage accumulation under
monotonous and cyclic loading, is proposed.