Magazine of Civil Engineering, №4(30), 2012
Engineering surveying of terrains. Hydraulic construction.


 METHODS

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Дополнительное образование по направлению Строительство

Журнал Гидротехника

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Reliability of earth dams on compound base

G.Ya. Bulatov, D.S. Gatanov
Reliability of earth dams on compound base

The proposed method allows calculating the required parameters of structural and technological protection activities. In addition, the solution of such problems as predicting the behavior of the dam and its degree of reliability for a given expected deformation from external influence is found. The reliability forecasting of conventional dams, without undermining, can also be made.
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Monitoring of fill dam constructed in Ust-Luga on soft foundation soils

B.V. Balashov, N.D. Belyayev, E.B. Mikhalenko, T.A. Tazeyev
Monitoring of fill dam constructed in Ust-Luga on soft foundation soils

The object of this study was the dam as part of a complex for transshipment of liquefied petroleum gases in the commercial port of Ust-Luga. During the work monitoring of facilities was carried out in order to control the security status of hydraulic structures under construction and to evaluate their impact on the environment.
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 CALCULATIONS
Composition and properties of foam glass crystal materials from compound of broken glass and high calcium slag

Yu.E. Senitskiy, N.Yu. Kuzmin
The oscillations of ship lock bottom

The accurate design relations intended to study the natural and forced vibrations of the bottom of the ship lock are provided. The degree of filling of the lock, as well as the added mass of water is considered. The various coupling conditions of the bottom and walls of buildings are taken into account.
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Determining the bearing capacity of soil foundation reinforced by geogrid

A.N. Badanin, E.S. Kolosov
Determining the bearing capacity of soil foundation reinforced by geogrid

The article deals with improving the construction properties of soils due to their reinforcement by geosynthetics, namely the geogrid. The definition of carrying capacity of geogrid reinforced foundation is concidered in terms of spatial task for the case when the ratio of base length to its width is not more than 5.
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 HEAT ENGINEERING
Selection procedure of seismic-load reduction factor K1 at a given level of ductility factor

S.A. Kudryavtsev, A.V. Kazharskiy
Numerical simulation of moisture migration depending on the rate of soil freezing

This paper includes description of a numerical simulation method and study about humidity changing in frozen soils, depending on the rate of soil freezing. The influence of soil humidity changing on the values of strength characteristics during the process of thawing is evaluated.
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The Finite Elements Research for Calculation of Thin-Walled Bar Systems

V.I. Shtykov, A.B. Ponomarev
Additional requirements for protective filtering materials of closed drainage laying in the seasonal soil frost zone

The article introduces the filtration model, taking into account the freezing of water in the geotextile. The model analysis allows obtaining conclusions about changes in the porosity and the coefficient of filtration of geotextile with according to changes in ice content. The diameter of the geotextile fiber, the initial porosity and the experimentally determined water loss geotextiles are considered.
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 HYDRAULICS

Yu.A. Kantsiber, V.I. Shtykov
Evaluating drainage outflow from residential and industrial areas of North-West Russia

The article presents a method of estimating the design characteristics of the drainage from residential and industrial areas of North-West Russia, intended to substantiate structures and parameters of drainage systems, to account the volume of waste water and to determine maximum allowable discharge of water into diversion chamber.
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The time of groundwater free surface lowering before foundation pit construction

A.D. Girgidov
The time of groundwater free surface lowering before foundation pit construction

On the basis of plane free surface gravitations groundwater flow model and some assumptions similar to ones employing in infiltration and quasistationary problems the time of the necessary lowering of free surface before the building of pit is considered.
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