The paper describes an automated wireless monitoring system developed for stress-strain state of main pipelines. Since the most damages occur in the main pipelines’ areas of intense plastic deformation, their remote control in such areas is of significant interest, and one of the solutions to the problem is the proposed measuring system based on Si-whisker sensitive elements.
The mechanisms of laser forming are analyzed. The experimental result are presented. Treatment recommendation of carbon steel 65Г and stainless steel 12Х18Н10Т are presented. The conditions and peculiarities of laser forming of low-carbon steel disks are explored.
In an article the calculation model of normal cracks formation is formed in the general theory of concrete and reinforced concrete elements and structures deformation. The method of determining of their step and the disclosure width depending on the stress-strain state is offered.
The influence of the concentrated force position (in the middle of the span and eccentricity) on the deformation of reinforced concrete arches loaded single short-term load is represented.
Mathematical model of asphalf carpet wavefornation and example of calculation bearing capacity of flu top layer of asphalt pavement against wave formation on areas of heavy braking traffic was described.
The paper presents a method of an advanced integrated assessment of technical condition of brick buildings as a whole as of their deformation of the skeleton of the fixed-engineering-geological conditions of the old building. The research is carried out on the example of a group of buildings of old housing system, located in Lviv at Dzerelna Street.
Operation of the old buildings of the Lviv city is close to a century conditional term. The owners of these buildings, regardless of their form of ownership, should follow structural safety of buildings associated with the reliability of operation. They must have the appropriate specialists or hire them to determine the technical building condition of the old building. These buildings have long been subject to examination to continue the period of efficient service of housing.
Purpose. The aim of the research is the analysis of integrated observations of parameters of physical fields in the CSG of Transcarpathia, the establishment of the space-time dependence of observable quantities, identify their characteristics and connections of these fields with the geodynamic situation in the region to build a geomechanical model of the system of Transcarpathia, the process of accumulation and release of energy of elastic-deformation processes. Methodology.
The main aim of this work is the study of dynamics of crustal movements in Europe for the period from 2000 to 2010. Absolute and regional annual vectors of velocity of displacement of permanent stations are estimated and schematic maps of annual rate of displacement vectors are created, conditional crustal blocks (CCB) which stable kinematics of horizontal displacements of permanent stations are selected. Average annual velocities and directions of movement of these blocks are estimated. These results will be further used to study the crustal deformation in surveying region.
GNSS has become common practice in determining movements and deformations of the earth crust in the global and regional scale. The results of observations at 147 permanent GNSS-stations located in Europe have been used to calculate the parameters of crust deformation. Using the Delaunay triangulation, our study region was divided into a network of triangles. Calculated velocity of the dilatation are belonging to the centers of the elementary triangle which was divided our study region. Schemes of the dilatations distribution in Europe from 2000 to 2010 have been created.