75504 2712-8172 Magazine of Civil Engineering 1 36 2013 1-135
RAR RUS 3-11 57189360151 0000-0001-6867-4050 West Pomeranian University of Technology Szczecin Orlovich Romuald orlowicz@yandex.ru
al. Piastów 17, 70-310 Szczecin, Poland
 Peter the Great Saint Petersburg Polytechnic University Rubtsov Nikita nrubtsov@stpr.ru
Polytechnicheskay, 29
 Peter the Great Saint Petersburg Polytechnic University Zimin Sergej zimin_sergei@mail.ru
Polytechnicheskay, 29
 Towards the anchors behavior in multilayer building envelope with face brick layer Due to increasing regulatory requirements for exterior wall thermal insulation properties multi-layer building envelope is widely used. National practice of using multi-layer exterior walls revealed their increased deficiency. The strength properties of the anchor ties are not regulated and often unknown. 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. The most common mistakes in applying anchors are analyzed. The results of foreign researchers are given. Two series of experimental studies of bearing capacity and deformability of anchors are presented. The dependencies of the pulling force on the type of anchors and strength properties of masonry mortar joints are obtained. 10.5862/MCE.36.1 framed monolithic buildings face brick layer layered masonry anchors test https://engstroy.spbstu.ru/article/2013.36.1/ 01.pdf
RAR RUS 12-20 LLC "OZIS-Venture" Fedotov Sergey fed87@mail.ru
4/1 Vavilovyh St., St. Petersburg, Russia, 195257
 Peter the Great Saint Petersburg Polytechnic University, PRDI “Venchur” Ulybin Alexey ulybin@mail.ru
Polytechnicheskay, 29
 Shabrov Nikolay shabrov@rwwws.ru The methodology of determining the corrosion of steel structures The problems of determining the corrosive wear of steel structures are considered. 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. Low reliability of the method based on evaluating the thickness of the corrosion oxides is substantiated. The problems of determining the original section of the elements are outlined. The algorithm for determining the corrosive wear is developed. An example of its application on a real object is shown. 10.5862/MCE.36.2 corrosive wear steel structures ultrasonic thickness measurement inspection of building structures https://engstroy.spbstu.ru/article/2013.36.2/ 02.pdf
RAR RUS 21-26 Belgorod State Technological University named after V.G. Shukhov Klyuev Sergey Klyuyev@yandex.ru NII VSU “INTER/TEK” Guryanov Yu. External reinforcing of fiber concrete constructions by carbon fiber tapes Strengthening the concrete and reinforced concrete structures with carbon fiber tapes is very actively applied in Europe nowadays. In Russia composites based on carbon fiber have also widely spread recently. The main advantages of these materials for strengthening structures are its high specific strength (strength-weight ratio) and strength-to-density ratio. Experimental studies on strengthening and restoration of the constructions were held. Flexible fiber concrete constructions based on man-made sand filler were used in the experiment. . Corrugated steel fiber was used as the internal reinforcement. Composite based on carbon fiber was used as the external reinforcement. The technology of the external reinforcement is given. Recommendations for strengthening the flexible fiber concrete constructions are made in the article. 10.5862/MCE.36.3 strengthening bendable constructions carbon fiber https://engstroy.spbstu.ru/article/2013.36.3/ 03.pdf
RAR RUS 27-38 Saratov State Technical University Ovchinnikov Ilya bridgeart@mail.ru Perm National Research Polytechnic University Ovchinnikov Igor Application of nonlinear deformation model for the analysis of behavior of reinforced plates on elastic foundation, interacting with chloride-containing environments. The basic relations In transport construction the reinforced structures such as heavy-wall and thin-wall slabs and plates on elastic foundation are widely used. The design model of slab (plate) on elastic foundation is used for calculating road pavements, slabs for reinforcing fill slopes, bridge decks and other structures. The constructing a deformation model of the reinforced plate interacting with a chloride-containing environments, based on the Vlasov-Leontiev elastic base is considered. The method based on the theory of structure parameters is used. The model of the structure is represented as symbiosis of models. A system of resolving equations of the model is given. The article is the first part of the research. In the second part the numerical results obtained in the software developed by authors will be given. 10.5862/MCE.36.4 deformation model corrosion of reinforced concrete plate on elastic foundation chloride corrosion road pavement https://engstroy.spbstu.ru/article/2013.36.4/ 04.pdf
RAR RUS 39-47 6602693779 Peter the Great St. Petersburg Polytechnic University Petinov Sergey sergei.petinov@gmail.com
29 Politechnicheskaya St., St. Petersburg, 195251, Russia
 Guchinsky Ruslan Fatigue assessment of tubular structures Fatigue assessment of welded joints in tubular structures in industrial applications according to the current design codes is based on the block-type presentation of the loading histories. An approximate procedure of the long-term stress distribution transformation to the block-type 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 ac-curacy 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. Technique of analysis may be used to choose sufficiently reliable versions of the detail. 10.5862/MCE.36.5 Fatigue damage accumulation «Strain-Life» approach S-N criteria Fatigue of tubular structures FEA modeling of tubular and pipeline structures https://engstroy.spbstu.ru/article/2013.36.5/ 05.pdf
RAR RUS 48-56 Vologda State University Utkin Vladimir UtkinVoGTU@mail.ru
Vologda, Russia
 Vologda State Technical University Shepelina Elena lenashepelina12@mail.ru Calculation of reliability of foundation beds according to the strength criterion with limited information about the load This article deals with a safety problem of upkeep of buildings and structures, specifically soil reliability according to the strength criterion with absolutely limited information about pressure by building foundation on the ground. 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. Design equations for determination of upper and lower values of reliability in the interval, method of risk calculation are presented in the article. Solutions on the definite value of foundation reliability by the estimated range of reliability are applied. 10.5862/MCE.36.6 foundation bed pressure ground reliability information random value https://engstroy.spbstu.ru/article/2013.36.6/ 06.pdf
RAR RUS 57-64 Peter the Great St. Petersburg Polytechnic University Bukhartsev Vladimir gts.bu@cef.spbstu.ru
29 Politechnicheskaya St., St. Petersburg, 195251, Russia
 Peter the Great Saint Petersburg Polytechnic University Huan Vu Manh ksenbor@gmail.com
Polytechnicheskay, 29
 Stability assessment of concrete structures on not bedrock foundation Shift stability assessment of concrete structures is the main task in the design. In addition to the linearly sliding shift in the plane of the structure foot there is often a danger of loss of stability of the construction according to the rotational shift. To assess the stability of the construction according to this scheme a design procedure was developed, using a limit equilibrium procedure. 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. In the study we used the solution, based on nonlinear law of distribution of normal stresses used for structures with the rectangular foot. 10.5862/MCE.36.7 stability of concrete structures limit state design Coulomb criterion shift with rotation the equilibrium conditions the distribution of normal stresses https://engstroy.spbstu.ru/article/2013.36.7/ 07.pdf
RAR RUS 65-74 Peter the Great Saint Petersburg Polytechnic University Liang Li hitliliang@gmail.com
Polytechnicheskay, 29
 Peter the Great Saint Petersburg Polytechnic University Shkhinek Karl karl-1303@mail.ru
Polytechnicheskay, 29
 The ultimate bearing capacity of ice beams It is usually proposed that bearing capacity of the ice beam during its interaction with a sloping hydraulic structure is exhausted when tensile stresses in the beam’s cross-section reach some limit. But besides the tensile stress there is a compressive stress during the interaction with a sloping structure. This can change our estimations of the ultimate bearing capacity and load exerted on the structure. 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 LS-DYNA. Results of the mathematical modeling were compared with data of physical experiments conducted by Sodhi. Good correlation of the results gave possibility to conduct wide numerical experiments and to suggest corrections to the existing methodology. 10.5862/MCE.36.8 ultimate bearing capacity ice beam load sloping hydraulic structures LS-DYNA https://engstroy.spbstu.ru/article/2013.36.8/ 08.pdf
RAR RUS 75-81 54938263800 St. Petersburg State University of Architecture and Civil Engineering Lukashevich Anatoliy a.luk@bk.ru
2-nd Krasnoarmeiskaya St. 4, 190005 St. Petersburg, Russia
 Peter the Great St. Petersburg Polytechnic University Rozin Leonid smitu@cef.spbstu.ru
Saint Petersburg, Russia
On the decision of contact problems of structural mechanics with unilateral constraints and friction by step-by-step analysis Constructively nonlinear problems with unilateral constraints and friction with unknown in advance contact zone are frequent in the calculation of various structures. Nowadays the numerical solution of contact problems is being realized usually on the basis of different schemes of finite-element method. 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 step-by-step 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. The problems of structures and buildings analysis with unilateral constraints and friction both for static and dynamic loads are considered and taking into account the complicated conditions of contact and other factors, which approximate the design scheme to the real structure conditions. 10.5862/MCE.36.9 contact problem unilateral constraints friction step-by-step analysis working scheme discrete model contact element https://engstroy.spbstu.ru/article/2013.36.9/ 09.pdf
RAR RUS 82-86 Saint-Petersburg State Technological University of Plant Polymers Kadashevich Yu. Saint-Petersburg State Technological University of Plant Polymers Pomytkin S. sppom@yandex.ru Endochronic theory of plasticity generalizing SandersKlyushnikov theory The importance of exact estimation of plastic deformations in the soils and building materials is noted. The defining relations for stresses and endochronic type deformations generalizing the theory of Sanders-Klyushnikov were proposed. Quasi-statistical equations of the new theory are based on the Novozhilov’s idea about the independence of motion of piecewise-linear plane yield surfaces and the technology of conversion from flow theory to endochronic theory. The practical formulas for calculating the uniaxial active and reversible loading of the material are presented. The similarity and difference between the new theory and the Sanders-Klyushnikov’s version are demonstrated on the several examples. 10.5862/MCE.36.10 plasticity theory endochronic approach defining relations quasi-statistical variant https://engstroy.spbstu.ru/article/2013.36.10/ 10.pdf
RAR RUS 87-96 56091980300 0000-0003-3850-424X Peter the Great St. Petersburg Polytechnic University Lalin Vladimir vllalin@yandex.ru
29 Politechnicheskaya St., St. Petersburg, 195251, Russia
 Peter the Great St. Petersburg Polytechnic University Rozin Leonid smitu@cef.spbstu.ru
Saint Petersburg, Russia
Peter the Great Saint Petersburg Polytechnic University Kushova Darya dasha_kushova@mail.ru
Polytechnicheskay, 29
 Variational functionals for two-dimensional equilibrium and stability problems of Cosserat-Timoshenko elastic rods This article deals with nonlinear two-dimensional problem of the theory of elastic CosseratTimoshenko rods in the material (Lagrangian) description with energy conjugate stress and deformation vectors. 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. Exact solution of the stability problem accounting for the deformations of bending, shear and tension-compression was obtained for the pivotally supported rod. 10.5862/MCE.36.11 large displacements and rotations energy conjugate forces and deformations variational functional equations of stability https://engstroy.spbstu.ru/article/2013.36.11/ 11.pdf
RAR RUS 97-102 Polzunov Altai State Technical University Kikot Andrey deltaing@mail.ru
Barnaul, Russia
 I.I. Polzunov Altai State Technical University Grigoriev V. Influence of flange width and wall parameters on effectiveness of cold-formed steel Sigma-profile in bending behavior The effectiveness of bending behavior of cold-formed 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. As a criterion of effectiveness it was accepted the ratio of maximum bending moment available in the zone of elastic behavior of the section to its area reflecting the material consumption. Effective section characteristics are calculated in accordance with Eurocode 3. It was taken into account the local buckling parts of section and distortional buckling. Variable parameters are: flange width and portion of the wall adjacent to the flange. Calculations were executed by computer program CFSteel. Analysis of obtained results is presented. 10.5862/MCE.36.12 cold-formed steel profile Sigma-section bending effectiveness CFSteel https://engstroy.spbstu.ru/article/2013.36.12/ 12.pdf
RAR RUS 103-109 Peter the Great Saint Petersburg Polytechnic University Isaev Sergey isaev3612@yandex.ru
Polytechnicheskay, 29
 M-6585-2013 6508103761 0000-0002-1196-8004 Peter the Great Saint Petersburg Polytechnic University Vatin Nikolai vatin@mail.ru
Polytechnicheskay, 29
 PLC Battery Company “Rigel” Baranov P. PLC Battery Company “Rigel” Sudakov A. Central Aerohydrodynamic Institute named after N.E. Zhukovsky Usachov A. Petersburg State Transport University Yegorov V. Development and verification of multiblock computational technologies for solution of unsteady problems of high building aerodynamics in the framework of URANS approach Recently in building aerodynamics the school of computer simulation of wind influence on the building became urgent. The widespread high building construction plays significant role here. 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 high-altitude 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. Periodic character of local and integrated wind loadings on a high-altitude building is analyzed. 10.5862/MCE.36.13 high buildings wind influence unsteady flow power load pulsation ripples calculation verification multiblock grids models of turbulence URANS program package https://engstroy.spbstu.ru/article/2013.36.13/ 13.pdf