Magazine of Civil Engineering, No.3(63), 2016
V.N. Medvedev, S.D. Semeniuk
Economic efficiency of the CBEBS (composite bearing element of
building structures) construction is achieved through the multipurpose usage of a strengthening
element, which provides reliable adhesion between a steel supporting sheet and concrete,
sustains a lateral load along durability of oblique sections, provides inflexibility during
concrete mix feeding, sustains stretching and compressing forces along
the durability sections to longitudinal axes of the element.
The article deals with the results of numerical modeling
of the 3D stress-strain state (SSS) of a 100 m high dam with reinforced concrete face.
It is shown that at the location of the dam in a gorge of any shape, the reinforced
concrete face is compressed in the direction from one side to the other and in the direction
along the slope it may have tensile stresses.
Taking into consideration the experimental data on the longitudinal and the normal to the wall
velocity fluctuations and the correlation coefficient between the fluctuations, the turbulent
friction components near the wall were determined.
M.R. Garifullin, A.V. Barabash, E.A. Naumova, O.V. Zhuvak, T. Jokinen, M. Heinisuo
Recently, buildings and structures erected in Russia and abroad
have to comply with stringent economic requirements. Buildings should not only be reliable
and safe, have a beautiful architectural design, but also meet the criteria of rationality
and energy efficiency. In practice, this usually means the need for additional comparative
analysis in order to determine the optimal solution to the engineering task. Usually such
an analysis is time-consuming and requires huge computational efforts. In this regard,
surrogate modeling can be an effective tool for solving such problems. This article provides
a brief description of surrogate models and the basic techniques of their construction,
describes the construction process of a surrogate model to calculate initial rotational
welded RHS joints made of high strength steel (HSS).
V.G. Burlov, A.M. Grobitski, A.M. Grobitskaya
The article considers the model of the administrative decision based
on synthesis It allows knowing the results of task implementation in advance. With this model
it is possible to create conditions
for a guaranteed solution to the task.