Magazine of Civil Engineering, №1(36), 2013
Building structures. Structural mechanics
STRUCTURES 
Search Subject plan for this halfyear 

R.B. Orlovich, N.M. Rubtsov, S.S.
Zimin
Purpose of the study was
to assess the state of the question, to analyze existing design
solutions used
in the construction in Russian Federation and also to conduct a series
of
laboratory tests to determine their bearing capacity of the main anchor
ties
currently used. Two series of
experimental studies of bearing capacity and deformability of anchors
are
presented. 

S.D. Fedotov, A.V. Ulybin, N.N.
Shabrov
The results of applying ultrasonic method to
determine the remaining profile of the structure are described. The
main
advantages and disadvantages of ultrasonic thickness meters
comparing to mechanical devices are given. The algorithm for
determining the corrosive wear is
developed. An example of its application on a real object is shown. 

S.V. Klyuyev, Yu.V. Guryanov


CALCULATIONS  
I.I. Ovchinnikov, I.G. Ovchinnikov
The constructing a deformation model of the
reinforced plate interacting with a chloridecontaining environments,
based on
the VlasovLeontiev elastic base is considered. A system of resolving
equations of the model is
given. The article is the first part of the research. 

R.V. Guchinsky, S.V. Petinov
An approximate procedure of the longterm stress distribution
transformation
to the blocktype format is developed. It allows reducing the number of
equivalent cyclic stress fragments compared to those required by the
rules for
fatigue design and provides accuracy of fatigue analysis of tubular
frame
structures. Efficiency of the developed approach is illustrated in
example of
fatigue assessment of the tubular frame bridge structure. 

METHODS  
V.S. Utkin, E.A. Shepelina
For solving the problem
of pressure of foundation on the ground the new ways for calculating
reliability and for the first time truncated distribution for
description of
random value were used. Calculated reliability of foundation is
expressed as an
interval of numeric values. 

V.N. Buhartsev, Vu Manh Huan
The proposed methodology
is based on the exact analytical formula for the elements of the flat
foot of
structure of rectangular and triangular forms and subsequent synthesis
of these
solutions for the construction with foot of any form. For structures
with an
arbitrary foot shape the linear distribution of normal stresses on the
plane of
the foot is used. 

Li Liang, K.N. Shkhinek
The purpose of the study was to estimate influence
of the longitudinal compressive stress on the ice beam’s
ultimate bearing
capacity. The solution was obtained with the program complex LSDYNA.
Results
of the mathematical modeling were compared with data of physical
experiments
conducted by Sodhi. 

FUNDAMENTALS  
A.A. Lukashevich, L.A. Rozin
A computational model of contact of elastic systems with using the
contact
finite elements in form of plane
frame or space frame is proposed. The numerical method, based on the
discrete model and
stepbystep schemes, allows the analysis of
contact interaction in problems of structural mechanics and has
advantages when the problem decision depends
on character and history of the
loading facilities. 

Yu.I. Kadashevich, S.P. Pomytkin
The defining relations for stresses and endochronic
type deformations generalizing the theory of SandersKlyushnikov were
proposed.
Quasistatistical equations of the new theory are based on the
Novozhilov’s
idea about the independence of motion of piecewiselinear plane yield
surfaces
and the technology of conversion from flow theory to endochronic
theory. 

V.V. Lalin, L.A. Rozin, D.A. Kushova
Equivalence of the differential and variational
formulations of the problem was proved for smooth solutions. The
expression for
the second variation of the Lagrangian functional was derived. The
differential
equations for the stability problem were obtained from the second
variation of
the Lagrangian functional. Two types of equation of plane problems of
stability
of equilibrium are obtained: variational equations for initial system
of
differential equations and Euler equations for the second variation of
the
Lagrangian functional. 

SOFTWARE  
A.A. Kikot, V.V. Grigoriev
The effectiveness of bending behavior of
coldformed steel profiles is studied.
The purpose of the study was to estimate the influence of section
parameters  flange width and size of the wall portion, adjacent to the
flange
– on effectiveness of the operation of flexural element
consisting of two Sigma
sections. Calculations were executed by computer program
CFSteel. 

S.A. Isaev, N.I. Vatin, P.A. Baranov, A.G. Sudakov,
A.Ye. Usachov, V.V. Yegorov
In this article the genesis of multiblock calculation
methodology for modeling wind influence on the high buildings is
presented. The methodology of calculation of wind influence on
the highaltitude constructions, based on using multibank overlapping
grids of
various scales is developed. The methodology is verified on the test
problem of
a flow around a cube with short circuit with the help of model of shear
stress
transport. 