No 5 (2017)
ARCHITECTURE AND URBAN PLANNING
9-28 536
Abstract
The article considers historical background and stages of the Yenisei embankment formation in the Krasnoyarsk Region in 17th and early of 21th centuries. The town-planning conception and practical activities are described for creation of the shoreline in different formation periods of the Siberian city. Analyzed are the historical and cultural valuables of sites and objects currently located on the embankment territory. The expediency and principles of saving historical and cultural valuables are determined as well as their use in the modern city life. The analysis is given to historical, graphic and text documents and field examination of the Krasnoyarsk embankment.
29-37 658
Abstract
The article is devoted to systematization Novosibirsk school architecture used during the city development. This systematization is based on the analysis of regulations, changes in the architectural stylistics, design of objects under review. These changes and their comparison with each other allow identifying major stages of school architecture in Novosibirsk. As a result of this research seven stages are determined and described.
38-57 663
Abstract
The paper presents the history and development of Japan architecture of late in the 20th and early 21st centuries. Creative concepts of the fourth generation of Japanese architects are considered including T. Ito, T. Ando and K. Kuma. Architectural styles used by these architects are described (Japanese version of Organic-Tech and minimalism, blurring of architecture). The statements of these writers reveal the conceptual essence of their projects. And fragments of philosophical and aesthetic doctrines (Sabi, wabi, Yugen, etc.), which, apparently, form the basis of these concepts are also given in this paper. Further research will involve more detail studies of Japanese philosophical teachings dedicated to the interaction of man and nature, the work by Arata Isozaki and other Japanese architects who have made a significant contribution to the development of natural styles in modern architecture.
58-66 546
Abstract
The imperfection of contemporary Russian city planning laws and reluctance of regional and municipal officials to develop the local legislative base lead to compositional and spatial destruction of the established valuable urban environment, superfluous density of building in historical centres of large cities with all ensuing consequences. The paper addresses the problem of restoration of disturbed urban planning technology, improvement of urban policy and amendment of urban planning legislation.
67-77 511
Abstract
The article reflects the problem of preserving the architectural and artistic originality of Tomsk, its historical settlement of federal significance. Facade composition of residential wooden houses is considered as a significant aspect which forms a unique architectural and artistic appearance of the ancient Siberian city. A study of houses of the middle of the 19th and early 20th centuries includes a window as a module forming a facade composition. The authors first consider the influence of the architectural style on facade composition of residential wooden houses in Tomsk. The research results can be used in practical restoration and new wood construction in the historical center of Tomsk and other Siberian cities.
78-87 665
Abstract
Natural reservoirs located on the territory of the northern part of the Tomsk-city is an important part of the contemporary urban landscape. Natural reservoirs directly affect the urban development in Tomsk districts such as Zaozer'e and Cheremoshniki, thereby establishing a certain relationship between the two components of the city formation, i.e. its development and natural landscape. The natural landscape has underwent changes with time as a result of the interaction between the life activity of the urban population and in some cases it disappeared at all.
88-98 405
Abstract
The paper deals with architecture and planning coal industry cities of West Siberia in the years of 1946-1956. In the 1930s, such cities represented a conglomerate of unsettled villages with low-rise buildings. They were located in coal industry territories near mines, far from large rivers. In the 1940-50s, another approach was used. New cities were located along large rivers and organized as compact city-ensembles with multi-storey buildings. Most vividly, new principles were embodied in Mezhdurechensk. The following factors contributed to a wide use of this approach. The introduction of new coal mining technologies strongly intensified the lack of territories. In the 1930s, designers gained extensive experience in working in such local condition as specific geology, landscape and departmental approach. The research is based on archival sources.
99-106 547
Abstract
The search for optimal farm models in Siberia should take into account both the evolution of commodity-type farms in pre-revolutionary Russia and foreign experience of their architectural and planning organization. The paper studies architectural and planning decisions of farms in foreign countries whose natural, climatic and urban conditions are similar that in Russia. The methodology is based on a systematic approach, which makes it possible to comprehend the nature of farms evolution abroad as a process of adaptation to new conditions. This approach allows considering the impact of external factors on the system of land management of farms and the development of peasant estate types, changes in the dynamics planning structures of housing and indistrial complexes.
107-120 677
Abstract
The paper presents the city territory divided into geoecological zones with account for geodynamic, geomorphological, architectural and planning features. The territory ranking, important for the ecological urban planning is performed by levels of carcinogenic risk caused by inhalation of formaldehyde, benzapyrene and soot. The obtained statistical results can be successfully used in the environmental survey for construction and urban planning.
BUILDING AND CONSTRUCTION
121-134 447
Abstract
The extreme natural and man-made impacts on buildings have become more frequent for the past time due to the explosion of condensed explosives or explosive combustion of gas-vapor or air-coal mixtures. These accidents involve large human and economic losses and their prevention methods are not always effective and reasonable. The aim of this paper is to study the method of enhancing the explosion safety of buildings by means of yielding supports. The paper presents numerical results on strength ad deformability of yielding supports in the form of annular tubes under static and dynamic loads. The effect from yielding supports is estimated taking into account three stages of deformation, namely elastic, elasto-plastic, and elasto-plastic with hardening. It is shown that the rigidity of yielding supports significantly affects their stress-strain state. With increasing rigidity of deformable elements, the dependency between load and deformation of yielding supports in elastic and plastic stages is linear. Significant reduction is observed in relation to the dynamic response and the deformation time increases with the increase of the plastic component. Thus, it is possible to apply them as supporting units for reinforced concrete bending structures.
135-142 472
Abstract
The analysis of plates and shells, which are elements of different structures implies the elastic behavior of their stress-strain state. In some cases, off-design operation mode of structures leads to abnormal stress redistribution, which in some areas arises from plastic deformation. Such stress concentrators are different-purpose round and oval holes with welded spigots and taps, holes for rivets and bolts, various cut-outs, rigid inclusions, weld seams, etc. Therefore, a detailed stress-strain analysis is required for these zones when designing and calculating the structural strength. The paper presents two-dimensional analysis of the problem and three-dimensional computations using the variation difference method. Geometrical correlations are presented by Cauchy equations. Physical relations are assumed as non-linear and described by Ilyushin’s deformation plasticity theory, although in solving the displacement problem the live load does not result in plastic deformations.
CONSTRUCTION MATERIALS AND PRODUCTS
Valentin V. Shekhovtsov,
Oleg G. Volokitin,
Gennady G. Volokitin,
Nelli K. Skripnikova,
Anatoly A. Anshakov,
Victor I. Kuzmin
143-150 610
Abstract
The paper considers the process of heat transfer between thermal plasma and agglomerated SiO2 particle. The dispersion boundaries of particles entering the thermal plasma flow are calculated in the paper. The experiment parameters include 3500 K temperature, 1-2×106 W/m2 specific heat flow, and 122 m/s flow velocity. The effect of the initial particle porosity on the dynamics of heating and evaporation during their motion in plasma flow is described. The model of the concentration liquid phase containing in particle with allowance for the actual chemical composition is proposed taking into account calculations of heating and evaporation dynamics of agglomerated particles in thermal plasma flow.
Tatyana S. Shepelenko,
Olga A. Zubkova,
Natalya V. Subbotina,
Ekaterina E. Lychnikova,
Grigory A. Zykeev
151-158 707
Abstract
The paper considers the possibility of substituting a part of the type 32.5N plain cement of CEM I class by the type 32.5N cement of CEM II/A-Sh class modified by sucrose solutions containing 20 % of granulated furnace slags. It is shown that in substituting 10 % CEM I by CEM II class cement modified by 0.1 % sucrose solution, the obtained composite is characterized by the increased strength and improved performance characteristics. Partial replacement of Portland cement with modified Portland furnace slag cement can be recommended as an effective method, which not only increases strength properties and improves rheological properties and corrosion resistance, but also reduces the cost of cement building material.
HEATING, VENTILATION, AIR CONDITIONING (HVAC), LIGHTING SYSTEMS AND GAS NETWORKS
159-168 659
Abstract
The paper presents three-dimensional models of the most common layouts of boiler circuits with the autonomous system of heat supply. The hydraulic characteristic of each layout is obtained. Calculation results of the main performance indicators are obtained for these layouts, namely: energy and metal consumption, capital and operating costs. It is suggested to reduce energy consumption of pumping equipment in the boiler circuit. A complex estimation of considered variants is given from the viewpoints of the boiler station manufacturer and operating organization. Also, the investment potential is calculated herein.
169-175 868
Abstract
The paper presents investigations of aluminum heater based on determination of the heat-transfer coefficient. A mathematical model of the heater in non-stationary mode allows this coefficient to be determined as well as heating capacity of the heater and its heat energy. The experiments which prove the adequacy of the suggested model of the heater are described in this paper.
CONSTRUCTION TECHNOLOGY AND MANAGEMENT
Aleksey I. Gnyrya,
Yuri A. Abzaev,
Sergey V. Korobkov,
Aleksandr P. Boyarintsev,
Dmitriy I. Mokshin,
Kseniya S. Gauss
176-182 477
Abstract
The paper presents a study of strength accumulation properties of cement brick depending on 0-67 h time interval and isothermal curing temperatures of 40, 50, 70 °C. It is found that at these temperatures, the yield strength increases almost by an order. The values of Young's modulus increase significantly also. It is shown that with increasing curing time plastic region considerably reduces. And at the end of the studied time interval, the samples fracture in a brittle manner at each temperature.
ENGINEERING AND CONSTRUCTION OF ROADS, SUBWAYS, AIRDROMES, AND TUNNELS
183-191 556
Abstract
The paper reveals shortcomings of design methods for frost resistance of road pavements given in the Industry Road Code 218.046-01. The results of road-climatic zoning are given with consideration of natural and climatic conditions of the Omsk region. The paper provides a proof for estimated values of clay soils of the subgrade for the flexible pavement design according to frost resistance conditions. It was found that Prof. Puzakov’s method is the most appropriate for the natural and climatic conditions under study. The optimum thickness values are obtained for frost-resistant road pavements on the territory of the Omsk region.
192-199 685
Abstract
The paper presents methods for soil moisture determination. The possibility of using frequency-dielectric type sensors is studied to measure the moisture content in the subgrade soils. The soil moisture sensor is tested under various conditions. The assessment of environmental impact is given in relation to reliability and durability. Based on the tests, it can be concluded that the this type of sensor can be used for these purposes.
200-208 559
Abstract
The paper presents investigations of anisotropic soil creep under pure shear in stabilometer. Pure shear is created in the following way. First, the clay soil sample is crimped in stabilometer with hydrostatic stress, and then the strain damping is added with vertical pressure with simultaneous decrease in the lateral pressure at a value two times less than vertical. The change in the sample shape occurs without the change in its volume. The volume change is controlled inside stabilometer by a small load cell created by the authors on the basis of silicon strain gauges. Tests include measurements of creep deformation of the soil skeleton with time starting from relatively instantaneous to long-term. Instantaneous deformation is determined under compression with the measurement of travel indicators using video filming. Stabilometer is used as a compression device, i.e., the sample is tested without a possibility of lateral expansion. Long-term sample deformation is recorded with time until deformation completely decays. Banded loam with a pronounced anisotropy is used for the experiment. Experimental curves of creep strain are approximated by exponential function of the creep measure. It is found that these curves should be split at least into two sections, each section being described by its own creep measure. Experimental data are not in good agreement experimental data. However, taking into account the structural soil strength will provide better agreement between experimental and theoretical results.
ISSN 1607-1859 (Print)
ISSN 2310-0044 (Online)
ISSN 2310-0044 (Online)