№ 1 (2010)
- Жылы: 2010
- Мақалалар: 13
- URL: https://journal-vniispk.ru/1815-5235/issue/view/23516
Articles
ANALYSIS OF VARIOUS APPROACHES IN RESEARCHES OF CREEP OF MATERIAL OF SHALLOW RIBBED SHELLS
Аннотация
Different approaches in forming the governing equations for the creeping problems of shallow ribbed shells based on various presentations of total energy functional and the ways of estimating results of influence function are analyzed. The examples of getting solutions for the shells made of acrylic plastic are given.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):4-12
4-12
GREEN'S FUNCTION FOR RIGIDLY FIXED PLATE
Аннотация
A problem of finding of displacements of a rigidly fixed plate loaded by concentrated force is examined. As an example, there was taken a triangle plate for which the function of Green was built with the help of the system «Mathematica». The computer program realizing the algorithm is presented and graphic representation of close value of Green's function for real problem is given.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):13-15
13-15
15-19
THE CALCULATION OF THE STRENGTH OF CONCRETE-FILED STEEL TUBE COLUMNS
Аннотация
The calculation of the strength of normal sections of eсcentrically loaded pipe-concrete elements should be used in the structures of high-rise buildings. Nonlinear deformation model of reinforced concrete for three-axis tensely - deformed conditions is accepted for the analytical description of joint work of concrete core and external steel holder.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):20-25
20-25
The semispatial theory of torsion of a composite layered core of any section
Аннотация
It to job the unidirectional layer represents kvazi the homogeneous the anisotropic environment which elastic properties are defined by elastic properties of components, i.e. properties of fibers and matrixes, their quantitative parity, and also structure of an arrangement of fibers and their orientation. Because physic mechanical properties of layers can differ from each other is defined the resulted mechanical characteristics of cross-section section.
For the decision of a problem of the generalized torsion the decision of a problem on pure torsion for each layer i is found. After substitution preliminary certain functions for each layer i in the right parts of the equation from the decision of the non-uniform differential equation there is a value for each layer i. As functions are preliminary defined, from the decision of the non-uniform differential equation there is a value for each layer i. Thus, on the found functions the system of the equations together with boundary conditions allows mathematical to formulate a problem for definition separately of function and separately of function for each layer i. For the decision of system of the equations the method consecutive approach is used. Calculation comes to an end at sufficient affinity of results next approach. Therefore the form of the decision favorably differs from the decision offered by other authors that allows receiving directly decisions in moving.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):26-35
26-35
ARBITRARY SHELL ANALYSIS BASED ON FEM IN MIXED FORMULATION WITH THE APPLICATION OF APPROXIMATION OF TENSOR FIELDS
Аннотация
The authors present an algorithm of forming the mixed matrix of relation of the forces and the displacements for six face FE with node unknown displacements and stresses. The algorithm is based on the Reissner's functional and theory of elasticity without simplified hypotheses. The method of approximation of vector и tensor fields was used for the representation of the displacements and stresses related with node unknown parameters. The possibility of using the worked out FE was shown for thin
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):36a-42
36a-42
GEOMETRICALLY NONLINEAR NUMERICAL STABILITY ANALYSIS OF SPACE TRUSSES
Аннотация
Algorithms for direct computing of singular states of space trusses at singular states and subsequent continuation of load paths are described in the paper. An example of geometrically nonlinear stability analysis of lattice shell is presented.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):42a-50
42a-50
DYNAMIC DEFORMING CYLINDRICAL GLASS-AND-PLASTIC PIPES, FILLED BY LIQUID, UNDER INNER IMPULSE LOADING
Аннотация
The manuscript is devoted to the working out of non-classical model of dynamical behavior of thin walled cylindrical pipe containing compressive liquid under action of blast pressure. A chemical explosive is situated on the axis of the pipe.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):51-60
51-60
60a-65
Protection of construction projects from action of the seismic wave when blasting in soft soil
Аннотация
Results of the study on the influence of the explosive waves in soft soil are presented when camouflet-blasting on protected projects. On the basis of experimental research, regularities of the changes of parameters of tense-deformed conditions of soil is established which has allowed to simplify the method of design and to account characteristics of soil.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):66-70
66-70
RECOMMENDATIONS FOR MODERN REDACTION OF STANDARDS AND RULES OF BUILDING IN SEISMIC REGIONS
Аннотация
Recommendations for modern reduction of standards and rules for building in seismic regions are given due to the natural dynamic tests of buildings and to investigation of consequences of hard earthquakes.
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):70a-75
70a-75
SEISMIC RESISTANCE OF ROLLER COMPACTED CONCRETE DAM
Аннотация
The seismic resistance of 100 m high RCC dam of symmetrical profile is considered on action of strong earthquakes (horizontal and vertical accelerograms 0,2 and 0,4 g). The method of seismic response of system "dam-foundation-reservoir" is con
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):76-78
76-78
MIKhALEV LEONID VIKTOROVICh
Structural Mechanics of Engineering Constructions and Buildings. 2010;(1):79-80
79-80