75504 2712-8172 Magazine of Civil Engineering 8 26 2011 1-98
RAR RUS 5-12 56352359500 0000-0002-5156-7352 Volgograd State Technical University Sergey Korniyenko svkorn2009@yandex.ru
28, Lenina Ave., Volgograd, Russia, 400005
 The estimation of enclosing structures edge zones influence on thermal performance and energy efficiency of buildings One of priority directions in modern building is maintenance of energy efficiency of buildings and constructions. This problem can be realized by perfection of architectural, constructive and technical decisions. The particular interest is represented by an influence estimation of temperature and moisture mode of enclosing structures on a thermal performance and energy efficiency of buildings. The analysis of the data available in the literature has shown absence of effective calculation methods of temperature and moisture mode in edge zones of enclosing structures that complicates the decision of this problem. The purpose of the given work is an estimation of edge zones influence on a thermal performance and energy efficiency of buildings. The design procedure of energy parameters of a building for the heating period, realized in the computer program is developed. The given technique allows settling an invoice power inputs on heating, hot water supply, an electrical supply. Power inputs on heating include conduction heat-losses through an envelope of a building taking into account edge zones, ventilation heat-losses and leakage air (infiltration), internal household thermal emissions, heat-receipt from solar radiation. On an example it is shown that the account of edge zones raises conduction heat-losses through an envelope of a building on 37 %, the expense of thermal energy on building heating on 32 %, and the expense thermal and electric energy on 13 %. Consequently, thermal and moisture mode in edge zones of enclosing structures makes essential impact on building power consumption. Perfection of the constructive decision leads to decrease of transmission heat-losses through an envelope of a building on 29 %, the expense of thermal energy on building heating on 25 %, the expense of thermal and electric energy on 10 %. Thus, perfection of edge zones of enclosing structures has high potential of energy efficiency. 10.5862/MCE.26.1 energy efficiency heating hot water supply power supply heat-losses edge zones of enclosing structures https://engstroy.spbstu.ru/article/2011.26.1/ kornienko.pdf
RAR RUS 13-18 Ural Research Institute of Architecture and Construction Veselov Vladimir 9022700088@mail.ru Ural Federal University named after the first President of Russia B.N. Yeltsin Belyakov V. Frost-protected shallow foundation: work in seasonally-freezing grounds, practice of thermal calculation 10.5862/MCE.26.2 energy efficiency heating hot water supply power supply heat-losses edge zones of enclosing structures the computer program https://engstroy.spbstu.ru/article/2011.26.2/ veselov.pdf
RAR RUS 19-24 Military engineering-technical institute Ivanov A. Military engineering-technical institute Тrеmbitskiy Мaksim tryamhello_86@mail.ru Foam concrete of certain average density for thermal insulation of attic floors Energy efficiency of building depends on several factors, including the summary heat losses through the building envelope – walls, windows, attic and basement floors. The leakage of heat through the attic overlap is 10-20%, depending on the number of floors of building. An additional factor, confirming the relevance of the reduction of heat loss through the attic floor, is the problem of the icicles on the roofs. Studies have shown that the most economical and durable insulation, applied to the attic ceilings, is a monolithic foam concrete with natural hardening. For producing foam concrete with required physical and mechanical properties we have developed a calculation-experimental method. This method is based on the manufacturing sequence of eight operations. The developed technique allows to receive foam concrete with natural hardening with a high accuracy with given density in the interval 100-190 kg/m3. 10.5862/MCE.26.3 methodology average density foam concrete mixture insulation cement water-cement ratio https://engstroy.spbstu.ru/article/2011.26.3/ trembickiy.pdf
RAR RUS 25-28 Khakass Technical Institute – branch of Siberian Federal University Portnyagin Denis my4455@yandex.ru Khakass Technical Institute Selivanov Yu. Khakass Technical Institute Selivanov V. Khakass Technical Institute Shiltsina A. Composition and properties of foam glass crystal materials from compound of broken glass and high calcium slag The aim of this work is to decrease the consumption of broken glass shortage for obtaining heat insulation materials on its base. The results of research of composition and properties of foam glass crystal materials from compounds of broken glass and high calcium slag obtained in burning of brown coal in Kansk-Achinsk field are shown. It is stated that compounds from mixture of broken glass and high calcium slag in quantity of 30-40% granulated with 30% of liquid glass of density 1400 kg/m3 after burning pending 3 hours with endurance 20 minutes at 800°C provide the production of granulated and modular foam crystal materials. Bulk density of granulated materials is 180-200 kg/m3, compressive strength in cylinder is 1,0-1,1 MPa. Average density of modular materials is 320-400 kg/m3, compressive strength is 4,1-5,3 MPa. 10.5862/MCE.26.4 foam glass crystal materials granulated modular broken glass high calcium slag https://engstroy.spbstu.ru/article/2011.26.4/ portnyagin.pdf
RAR RUS 29-34 Norilsk Industrial Institute Lichman Nelli norvuz.nii@norcom.ru The use of Norilsk region’s sulfur and hes ash for hydraulic engineering and reconstruction As a result of the industrial activity millions of tons of industrial wastes are piled in the industrially developed countries. They occupy huge spaces, worsen ecological situation and require proper recovery. The paper contains the information about the ways of technical sulfur and ash recovery from the thermal power station which are used for obtaining artificial fillers and as components in the hydraulic concretes. Comparative characteristics that identify preferential parameters of sulfur concrete with respect to cement concretes are presented. Also the possibility of using technical sulfur and compositions based on it in hydraulic engineering as an anti-screen were investigated. Studies have revealed the fundamental possibility of obtaining high-quality sulfur compounds on the basis of industrial wastes and their field of application was determined. 10.5862/MCE.26.5 sulfur binder sulfur composites ash from heat stations recycling of industrial wastes hydraulic engineering https://engstroy.spbstu.ru/article/2011.26.5/ lichman.pdf
RAR RUS 35-40 7004630127 Ufa State Petroleum Technological University Babkov Vadim babkov.ugntu@gmail.com
1, Kosmonavtov St., Ufa, Russia, 450062
 Ufa State Petroleum Technological University Samofeev Nikita volvita@inbox.ru Ufa State Petroleum Technical University Chuikin A. A silicate brick in external walls constructions of apartment houses: condition analysis, durability forecast and methods of its increasing Practice shows, that constructive elements the most damaged by the environmental conditions are external walls of apartment houses and, accordingly, these constructive elements demand a complex estimation of their condition about decreasing of their operational characteristics which provide their bearing ability and heat-shielding properties, and development of ways of a prolongation of an operational resource. In the given work the structure of silicate brick is analyzed, questions of a technical condition, the forecast and ways of prolongation of a residual operational resource of external walls of buildings on the basis of a silicate brick of construction 40 - 70 уеаrs are considered. The analysis is made using physical and chemical methods on an example of an available housing of this category in cities of Republic Bashkortostan. The received results of a condition of buildings external walls laying allow to make a conclusion about decreasing of silicate brick external wall bearing ability for the long period of operation (?70 years) within the limits of up to 10-15% due to reduction of effective section by 7-12%, decreasing in durability of a facing brick to 15-20%. Materials (a brick and a masonry mortar) of external walls of buildings deeper layers are in much better or even in practically initial condition that is proved out by the big number of inhabited objects inspections. Prolongation of a residual operational resource of an external wall on the basis of a silicate brick is possible by its protection by waterproofing materials (plaster systems, waterproof getting compositions) in a combination of the named systems of hydro-protection with effective facade heat-insulation. 10.5862/MCE.26.6 carbonisation of the structure-phase hydrosilicate erosion of the exterior walls prolongation and durability increase serviceability https://engstroy.spbstu.ru/article/2011.26.6/ babkov.pdf
RAR RUS 41-50 LSR Group Grinfeld Gleb gleb.grinfeld@aeroc.ru Peter the Great Saint Petersburg Polytechnic University Kuptaraeva P. Autoclaved aerated concrete masonry with external insulation. Features of moisture conditions during the initial period of operation Building designs at the moment of commissioning include the initial (building and technological) moisture. Thermal insulation systems influence on the yield of the initial moisture from the structures. However, there are no specific design requirements about determining initial moisture content in insulation systems. In this article the features of the initial period of operation on an example of aerated concrete are defined: the results of field surveys and calculations are shown and compared. On the basis of this comparison basic advice on the accounting features of the initial period of operation of autoclaved aerated concrete structures with external insulation are given. 10.5862/MCE.26.7 autoclaved aerated concrete external insulation moisture content drying https://engstroy.spbstu.ru/article/2011.26.7/ grinfeld.pdf
RAR RUS 51-56 56426211200 0000-0002-3541-0072 Peter the Great Saint Petersburg Polytechnic University Petrichenko Mikhail fonpetrich@mail.ru
Polytechnicheskay, 29
 Peter the Great Saint Petersburg Polytechnic University Petrochenko Marina mpetroch@mail.ru
Polytechnicheskay, 29
 Hydraulics of natural convection flows in building walling with air gap Natural convection flow in vertical flat ducts with heated face is used to intensify the transfer in technical systems, such as ventilated gaps of facade designs. Understanding of physical processes that accompany the air flow in vertical flat parallel-plate ducts gives ameliorating the structures designing process and increasing its operating characteristics. The aim of this work is evaluation the average speed of natural convection air flow in vertical parallel-plate duct with different temperature of walls. It is enough for barotropic natural convection flow in the vertical parallel-plate ducts that the polytropic index in the barotropic state do not exceed the polytropic index in the equilibrium state. Polytropic index in the uniform and barotropic natural convection flow is almost proportional to the length of the channel. It is established that the shorter the channel, the greater must be the heat flux that creates vertical traction, and vice versa. 10.5862/MCE.26.8 natural convection flow flat ducts natural draft ventilated air gap https://engstroy.spbstu.ru/article/2011.26.8/ petrochenko.pdf
RAR RUS 57-62 Belarus National Technical University Protasevich A. Republican Unitary Research Enterprise for Construction "Institute BelNIIS" Krutilin Anton ankr@tut.by Ventilated facade systems classification. Influence of ”Thermal bridges” on their heat-resistant characteristics There are currently a large number of ventilated facade system (VFS) designs for thermal insulation of exterior walls. At the same time structures are greatly varied by the way of interlayer ventilation, type of insulation protection from the filtration air flow, thermal protection level with the equal thickness of heat insulation material, etc. In this article the VFS thermal insulation structures were analyzed. The main problems of designing such systems are protection of thermal insulation layer from cold filtration air flow and reducing heat transfer resistance by reason of heat-conducting inclusions (e.g. metal fixings). The possible technical decisions for both questions are found. On the basis of field and laboratory researches a classification system is proposed. External walls heat transfer resistance calculations of a real object with a vented insulation system were carried out. 10.5862/MCE.26.9 ventilated facade system air filtration classification heat transfer resistance thermal insulation thermal bridges https://engstroy.spbstu.ru/article/2011.26.9/ krutilin.pdf
RAR RUS 63-68 Interregional Window Institute Kurenkova A. Peter the Great Saint Petersburg Polytechnic University Kuzmenko A.
Polytechnicheskay, 29
 Peter the Great Saint Petersburg Polytechnic University Kurenkova Olga kurenkova.om@mail.ru
Polytechnicheskay, 29
 The formula of double-glazed window in high-rise buildings The purpose of this article is to adapt the method of glass unit calculating taking into account shortterm loads during installation and construction loads occurring during the operation of the building. Considering the fact that nowadays Russian standards are going to be harmonized with European, in this methodology the rules applicable in the European Union and adapted to Russian climate has been used. The offered technique allows to take into account in the calculations not only the glass unit wind load, but also climatic and temperature effects for site-specific installation of window unit. The calculations indicate the necessity of using this technique, especially for high-rise buildings. The calculation allows to receive the most accurate formula for the glass, to calculate not only the thickness of the external and internal glass pack, but also the distance between glasses, which had not previously been practiced. This article shows an example of the glass pack calculation for a specific building, which height is 81 m. 10.5862/MCE.26.10 double-glazed window high-rise building the thickness of external glass calculation method operational load assembly load wind load window unit door unit harmonization of standards https://engstroy.spbstu.ru/article/2011.26.10/ kurenkova.pdf
RAR RUS 69-80 56091980300 0000-0003-3850-424X Peter the Great St. Petersburg Polytechnic University Lalin Vladimir vllalin@yandex.ru
29 Politechnicheskaya St., St. Petersburg, 195251, Russia
 56296687300 0000-0002-2299-3096 Peter the Great Saint Petersburg Polytechnic University Rybakov Vladimir fishermanoff@mail.ru
Polytechnicheskay, 29
 The finite elements for design of building walling made of thin-walled beams In modern society in Russia and abroad there have been observed a wide application of a metalware in industrial and civil engineering. Special place in the building industry is belonged to light steel thin-walled constructions, which have a lot of technological advantages. In the monolithic and frame building, which amount constantly grows it is possible to use so-called thermopanels as effective and economic protecting designs. The purpose of this work is to create a numerical method of thin-walled bar systems design by using semi-sheared and unsheared theories. In the article the first development cycle of a numerical method creating is considered – creating of the matrixes of the inflexibility of thin-walled finite elements of various types using the semisheared theory (by V.I. Slivker) – depending on a way of approximation of deformations functions (torsion and warping): 1) linear approximation of torsional functions with a 2-central finite element having 4 transitions;  2) square-law approximation of torsional functions and linear approximation of warping function with a 3-central finite element having 5 transitions;  3) square-law approximation of functions of torsional and warping functions with a 3-central finite element having 6 transitions. Thus deformation functions (torsional angle and warping) are approximated as mutually independent functions. Also creating of a matrix of the inflexibility of a thin-walled finite element on unsheared theory of design (by V.Z. Vlasov) with cubic approximation of torsional functions is considered. 10.5862/MCE.26.11 thermopanel torsion interpolating polynomials bimoment deformation of shear matrix of the inflexibility https://engstroy.spbstu.ru/article/2011.26.11/ rybakov.pdf