No 2 (2016)

Articles
VISUALIZATION OF THE REVERSED MOTION WHEN SOLVING PROBLEMS IN MECHANICS BY GRAPHICAL METHODS
Matveev V.M., Romanova V.A., Strashnov S.V.
Abstract
The article considers the possibility to visualize the process of solving graphic problems of mechanics of mechanisms in dynamic mode by creating a mini-film, which can be used by a teacher in lectures or in practical classes, and by students for self-studying the course "The- ory of mechanisms and machines"
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):3-9
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ENGINEERING PEDAGOGY AND NEW WAYS TO ACCELERATE LEARNING: THEORIES, METHODS AND PRACTICES
Balykhin G.A., Balykhin M.G.
Abstract
Modern production technologies are "short-lived". They quickly progressed continuously increasing knowledge-based, requiring all engineers, included in the process, not only the ap- propriate level of intellectual development, but scientific and social development, which ad- vance and give an opportunity to see and evaluate the possible options for follow-turns technological. The ability to predict the processes of technological and social development become vital for the competitiveness of engineering and technical professionals. It requires continuous training and psychological self to the success of the subject in the new environment.
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):9-14
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THIN-WALLED SHELL STRUCTURES ON THE BASE OF JOACHIMSTHAL'S CANAL SURFACES
Ivanov V.N., Valensya R.G.
Abstract
The article concerns with the questions of the forming of the space thin-walled structures on the base of the Joachimsthal's canal surfaces. The Joachimsthal's canal surfaces are formed by the system of the circles lying in the planes of pencil. This allows making such structures without using of complex types of shuttering and these surfaces give an opportunity to create different interesting forms of the spatial thin-walled construction.
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):15-21
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SOIL BASEMENT ESTIMATIONS OF THE CROSS-SHAPED ISOLATED FOUNDATIONS
Ivanov S.P., Glushkov A.V.
Abstract
The article presents the results of analytical numerical calculations of the cruciform foun- dations under the uniformly distributed load. The distributions of the stresses and displace- ments in active zone of the cross-shaped foundations are featured. The comparison of experi- mental and analytical settlements of complex form foundations is carried out. Multifactor power dependences are gained to define the settlements of cruciform foundations on cohesive and non-cohesive soil basement. The ability of the effective foundation forms using the condi- tion of the maximum allowable settlement is featured.
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):21-29
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TRANSVERSE BENDING OF A THIN PERFORATED PLATE WEAKENED BY RECTILINEAR CRACKS WITH END ZONES OF PLASTIC DEFORMATION
Kazbekov B.B.
Abstract
We give a problem solution for transverse bending of a thin plate, clamped at holes edges and weakened by doubly periodic system of rectilinear through cracks with unequal length, collinear to abscissa and ordinate axes plastic end zones. We construct the general representa- tion of the solutions describing the class of problems with a doubly periodic distribution of moments out of the circular holes and rectilinear cracks with end zones of plastic deforma- tions. Satisfying the boundary conditions, the solution of the plate bending theory problem is reduced to two infinite systems of algebraic equations and two singular integral equations. Then, each of the singular integral equations reduces to finite system of linear algebraic equa- tions
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):29-38
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THE PRACTICAL REALIZATION OF A MATHEMATICAL (COMPUTERIZED) MODEL OF A CONCRETE RIBBED SLAB
Markovich A.S.
Abstract
In the past few decades, the method of final elements was wildly used in testing stress- strain state on computer building structures. As a rule, discrete final element's model of any structure consists of the final elements number of different sizes, which are joined to each oth- er. Wrong docking of badly compatible final elements leads to deformation of calculated model generally and as a result to wrong calculation data knowingly.This problem was especially acute in the early stage of development of numerical methods, and it is relevant today.The author of the article intends to return tothe discussion of this issue. As the object of study, concrete ribbed slab was considered there, for modeling which required using different types of final elements.
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):39-44
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STUDY OF THE BENDING MOMENT IN FORMING CURVED PROFILE METHOD FOR ROLLING MILL FORMING
Morozov Y.А., Verkhov E.Y., Frolov A.A., Krutina E.V.
Abstract
The results of modeling the bending process on the basis of broad band balance method works using terms Tresca and Huber-Mises are compared. The authors use four different ini- tial distributions of the yield strength of the strip thickness. Curves of change of bending mo- ments to quantify the uncertainty regarding the experimental studies are presented
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):45-51
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AXISYMMETRIC PROBLEM IN PLASTICITY THEORY OF THICK-WALLED SHELL WITH ACCOUNTING FOR INHOMOGENEITY OF CONCRETE AT SUBZERO TEMPERATURES
ANDREEV V.I.
Abstract
Thick-walled shells are found in many engineering structures, particularly in the con- struction of thermal power. Another example of practical application is the design of storage facilities for cryogenic liquids. We consider the problem calculating finite cylinder which is in an axisymmetric tem- perature field, the material of which has a non-linear stress-strain diagram. Chart options depend on the temperature
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):51-54
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MODELLING OF THE T-SECTION RODS IN THE ANALYSIS OF BUILDING STRUCTURES BY FINITE ELEMENT METHOD
AGAPOV V.P.
Abstract
The technique of finite-element modeling of the T-section rods, based on the use of three-dimensional theory and super element technology, is described. A brief summary of the calculation formulas and a description of the algorithm realized in the program PRINS is pre- sented. The test task is considered. The calculation results obtained by the program PRINS are compared with the analytical solution.
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):55-59
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FINITE ELEMENT SIZE INFLUENCE UPON DESIGN STRESS-STRAIN STATE OF ARCH DAM
Kozlov D.V., Volkov V.I., Golyshev A.I., Uchevatkin A.A.
Abstract
FE size influence upon the design stress-strain state of arch dam is investigated keeping in mind the mathematical substantiation the effectiveness of constructive solutions to strengthen the structure
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):59-63
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THE FEATURES OF MATHEMATICAL FINITE-ELEMENT MODELING OF THE SYSTEM "NEWLY BUILT CONCRETE STRUCTURES - NON ROCK FOUNDATION"
Rubin O.D., Shestopalov P.V.
Abstract
An improved method of numerical finite-element modeling of concrete structures built on nonrock foundations is provided. The dimensions of the modeled fragment reason to the depth limit of the compressible foundations strata. The increase in deformation modulus of the foun- dations strata with an increase in the depth of the soil layers is taken into account
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):63-67
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ESTIMATEDCHARACTERISTICS OF SUB GRADE SOILS
Kayumov A.D., Hudaykulov R.M.
Abstract
In the paper, results of studies of estimated characteristics of grounds in saline areas of Uzbekistan used in the sub grade soil construction of automobile roads are given. As the result of interpretation of experimental data, the graphic analytical dependences for determination of estimated characteristics of grounds according to the type and quantity of salinization, density, and humidityof soils were derived
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):68-75
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FATIGUE OF A ROADWAY SLAB OF HIGHWAY BRIDGES WITH WELDED ROD MESHES
Novak N.Y.
Abstract
The problem of prefabricated reinforcing meshes with contact welding application for roadway slabs of highway bridges is considered. The experimental study results for welded joints of reinforcement bars and full-size samples of reinforced concrete slab are given. The possibility of the use of welded meshes as alternative to "knitted" is shown
Structural Mechanics of Engineering Constructions and Buildings. 2016;(2):75-80
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