The article assesses the economic situation in the Far East and identifies the problems of effective development of the territory. The article considers construction technologies and engineering solutions that can be used by the participants of the state program "Far Eastern hectare" for the effective use of land. The territory of the Far East has been divided into regions that are relatively homogeneous in terms of natural and climatic conditions (the Republic of Sakha (Yakutia), Khabarovsk and Primorsky Territories), and optimal technologies for low-rise construction, technological solutions in terms of the device of autonomous heating and an autonomous solar power station for the designated areas are proposed.
Keywords: construction, low-rise construction, the Far East, "Far Eastern hectare", thermal efficiency unit, SIP panels, energy efficiency, "green" construction, construction 3-D printer, sandwich panels
The aim of the study is to develop an "evolutionary model" of a transport interchange complex (TIC) - as a kind of ”growth point" of an aeropolis. Methods of “prognostic” and “structural-morphological” modeling of TIC are used for reasonable planning of the growth and development of the aeropolis. Five intermediate architectural and typological models of the transport and transfer complex have been identified: 1) bus station; 2) bus station with logistics center; 3) intermodal complex station; 4) transport and business center; 5) transport and public complex. Its "structural and morphological units", which include: a) functional components; b) structural and tectonic "units"; c) communication "framework"; d) elements of the growth of the aeropolis. A similar diachronic (developing) model of a transport interchange complex ensures its phased planning, optimal functional zoning of the facility for each intermediate phase, which will allow it to be self-sufficient at the early stages of operation. architecture.
Keywords: architecture, shaping, functioning, spatial development, transport interchange complex, transport interchange hub, transport infrastructure, aeropolis, model, structural and morphological approach, social and business center
Research in the field of design of buildings and structures has shown that the level of implementation of BIM technologies in different countries is at different levels. The availability of a regulatory framework in this area, financial assistance to construction organizations during the transition to BIM modeling contribute to raising the level. The article also provides a justification for the use of BIM technologies in ventilation systems, taking into account the requirements for these systems.
Keywords: BIM modeling, ventilation systems, 3D design, Autodesk Revit, implementation levels, information modeling, BIM technology, regulatory and technical base
Concrete has unique properties that allow it to occupy a leading position in the market of building materials. General-purpose structural concrete is used for the construction of buildings and structures that can provide sufficient strength and elasticity for load-bearing and enclosing structures. Concrete production technologies are in constant development, inextricably linked with the solution of the most important task – reducing the mass of building materials, and, as a result, reducing the material consumption of construction
Keywords: capital construction, structural concrete, heavy concrete, light structural concrete, resource saving, economic feasibility of using light concrete
The construction industry is developing dynamically today. Monolithic reinforced concrete frame is the most common construction of modern buildings. There are the following advantages of monolithic construction technology: the speed of construction; the possibility of building enclosing structures using a combination of various building materials; architectural expressiveness of buildings and others. However, a number of problems cannot be ruled out. The solution of these problems is relevant when accelerating the pace of construction and improving the quality of construction and installation work. One of them is the problem of concrete strength gain in winter production conditions.
Keywords: winter concreting, concrete heating methods, heat treatment parameters, modeling of concrete heating conditions, concrete heating process control
The conditions and the process of certification of buildings according to WELL and Fitwell standards are analyzed. A comparison of standards was made. The process is described, as well as the necessary conditions for successful certification.
Keywords: construction, European standards of green construction, green technologies, energy saving, energy efficiency, WELL, FitWel
The article considers the possibility of optimizing the composition of the reinforcement link when installing the reinforcement frame of vertical monolithic structures. Various variants of the composition of the reinforcement link are considered, depending on the options for connecting reinforcement rods in vertical monolithic structures (binding of the reinforcement frame with a knitting hook, with an automated gun and with a coupling connection). The data for the calculation were obtained by the method of timekeeping of the reinforcement works considered in the article. Based on the conducted timekeeping and the construction of a mathematical model, the optimal composition of rebar workers was determined when performing reinforcement work.
Keywords: timing, mathematical model, optimization, connection of reinforcing bars, link composition, reinforcing bars, monolithic structures, dependency graph, labor intensity, minimum numerical composition of the link, qualification composition of the link
In the course of the work, the most popular environmental construction standards for today were studied: BREEAM, LEED, WELL and FitWel. The categories evaluated by these standards are considered.
Keywords: construction, energy-efficient technologies, green technologies, energy saving, energy efficiency, green construction standards, BREAM, LEED, WELL, FitWel
The paper justifies the relevance and reviews the issues of energy efficient reconstruction of a construction system at various lifecycle stages, underlining that reconstruction needs to be viewed as a separate phase of the property lifecycle. Despite the fact that construction systems are static, all lifecycle stages are dynamic and require complex control. The diagrams are provided to show the building’s lifecycle and the process of stagewise supervision of energy efficient reconstruction by the client.
Keywords: lifecycle, stage, phase, target system, process layout/structure, performance monitoring
The presented study analyzes the issues related to the organization of construction production during the demolition of buildings for housing and civil purposes in the conditions of renovation of urban areas. The main issues in this case are the analysis of the initial data of the pre-design stage, the selection of tools, machines, mechanisms. In addition, it is important to analyze the factors influencing the technical and economic indicators and applied technologies.
Keywords: demolition and dismantling of buildings, organizational and technological solutions, technical and economic indicators of work, a group of influencing factors, technical condition of a building, construction waste
The article describes the well-known design of a tape-shell foundation. Based on the analysis of the known design, a number of factors affecting the limitation of the scope of the tape-shell foundation are derived. In order to ensure the controlled inclusion of the reinforced concrete shell of the foundation in the work, the author of the article proposed the use of a damping gasket under the tape support contours. A gasket made of an easily compressible slab material - polystyrene foam - is compressed under the influence of the load from the walls and columns of the basement of the building, the reinforcement of the shell is stretched and involves the soil of the subshell part of the foundation. At the same time, the strength characteristics of the band-shell foundation increase, the sediment decreases. The author of the article conducted numerical studies to determine the required thickness of the gasket. It is proved that the use of a damping gasket is relevant for soils with a deformation modulus of less than 15 MPa, above this value, the use of a gasket is impractical.
Keywords: tape-shell foundation, reinforced concrete shell, tape support contour, ground whole, auxiliary method of inclusion in the shell, damping gasket, thickness of the gasket
The review and analysis of the European practices of construction of educational institutions is carried out. The main features of architecture and energy-efficient solutions in the projects of educational institutions in Europe are considered.
Keywords: construction, school facility, world construction experience, architecture, landscaping, zoning, landscaping, landscape, energy efficiency, energy-efficient technologies
The development of a methodology for the formation of an estimate of a construction object on the basis of its information model is considered, taking into account the state of development of software systems for BIM modeling and the peculiarities of regulatory regulation of the construction of construction projects in Russia. The factors that limit the possibility of drawing up estimate documentation for the information model have been identified. Taking into account the identified limitations, a set of operations necessary for the formation of an estimate for a construction object based on its information model is presented.
Keywords: BIM, 5D BIM-model, estimate documentation, civil and industrial construction
The construction industry is considered to be one of the most unsafe industries, and as a result, safety in the construction industry is considered a very important factor. To reduce the number of accidents and monitor workers at a construction site, the article suggests integrating new tracking and communication technologies. The authors analyze the existing similar technological solutions, identify their advantages and disadvantages. A method for organizing monitoring of workers at a construction site using mobile devices is proposed, as well as the architecture of a software and hardware complex. The developed method is a smart system for a mobile device. This solution allows you to monitor the location of workers using a GPS tracker and a built-in accelerometer, and, if necessary, notify them of a possible danger.
Keywords: construction site, accidents, safety in construction, employee monitoring, mobile application, geolocation
The paper presents the results of a study of the possible fight against snow drifts in the Murmansk region on the example of an auto-approach to the village of Teriberka. The volume of snowfall is calculated, recommendations are given on climatic data for the region, recommendations are given on possible options for dealing with snow in the Far North regions.
Keywords: snow drift, snow transport, road climatology, motor road, protection against snow drifts, drifting road sections, permanent and temporary snow protection
The choice of a method for transporting hydrocarbons from the shelf of the northern seas is an urgent task, necessary for the economic justification of a project for the development of an offshore field. A comparative analysis of existing transportation schemes allows us to take into account both the advantages and disadvantages of possible options, namely, the natural and climatic features of the region, the technical capabilities of contractor organizations, the cost of field development facilities and vehicle rental.
Keywords: hydrocarbons, continental shelf, transport scheme, analysis, tanker, gas and oil pipeline, onshore infrastructure, offshore infrastructure
The article deals with the actual problematic elements of the organizational structure of enterprises in the construction of industrial buildings and structures. Using the method of optimizing the effectiveness of the existing organizational system, the necessity of introducing organizational and technological modules was revealed. An algorithm for optimizing the organizational structure of an enterprise during the construction of industrial buildings is proposed.
Keywords: optimization of organizational structures, organizational and technological modules, modules-stages, optimization algorithm
This work is devoted to assessing the quality of the completed construction and installation work. A number of violations in the technology of facade works were noted. The advantage of a wet facade is noted. The main reasons for the occurrence of violations are considered. There are noted cases in which judicial intervention is required and it becomes necessary to conduct a forensic construction and technical examination. The main aspects that need to be paid attention to by specialists during the construction and technical expertise have been identified.
Keywords: low-rise buildings, facades, quality assessment, compliance, judicial construction and technical expertise, court case
The factors identified in this article, affecting the increase in the rate of monolithic construction of multi-storey buildings and structures in the winter. Organizational and technical solutions have been established, which must be taken into account when developing organizational and technological documentation. The object of the research in this article is the process of erection of residential monolithic buildings in winter by the high-speed method, the subject of the research is the organizational and technical parameters that affect the speed and quality of construction processes. The practical significance of this work lies in the fact that the results of the study can be used for the rational organization of construction production by its participants.
Keywords: monolithic construction, winter concreting, organizational and technological solutions, high-speed monolithic construction, organizational and technological potential
The article proposes a special device to transport earth when building an underground part by the «top-down» and «top and down» technique. The developed device is fully electrically powered. The proposed technology enables to completely exclude nonproductive movements of excavating and transportation devices to relocate the earth from the working site to the dumping site onto trucks above ground. The device is adapted to work as part of the production line when realizing the “top-down” and «top and down» technology. To exclude load lifting mechanisms for lifting and dumping of the earth onto the trucks above ground, it is proposed to use two lifting rails with hoisting equipment fixed on a metal frame.
Keywords: “top and down” technology, earth works, excavation works, subsurface part of a building, earth movement, tier of a subsurface part of a building
The analysis of school buildings constructed in the city of Rostov-on-Don is carried out. The features of their construction are considered. An assessment of the need for repair work and the construction of new schools has been carried out.
Keywords: construction, school facility, reconstruction, architecture, number of floors, student capacity, wall material, heritage sites, Rostov-on-Don
The article provides the definition of a deep pit. The authors substantiated the need for fixing the walls of excavations with a depth of 3-5 meters and the development of methodological recommendations and reference data for the selection of optimal methods and structures used for enclosing the excavation. Wooden sheet pile is the most affordable and technically simple solution for fixing the walls of excavations with a depth of 3-5 meters. The authors calculated the structural characteristics of a wooden sheet pile for various soil conditions according to the method proposed by Professor E.K. Jacobi. The results are presented in a reference table, a fragment of which is given in the article. The developed reference data make it possible to assess the feasibility of using a wooden sheet pile without additional calculations. Engineers can determine the required cross-sections of the fence and struts, the immersion depth of the wooden sheet pile, the step of installing the struts according to the reference data.
Keywords: deep pit, fixing the walls of the pit, sheet pile, E.C. Jacobi method, pit collapse, pit slopes, earthworks, work safety, wooden sheet pile, accident
The article considers the possibility of improving the physical, mechanical and environmental properties of polymer concrete by changing their component composition depending on the requirements for the operational characteristics of the construction object. Currently, the research of scientists is aimed at the development and implementation in construction practice of compositions of light building materials, the range of densities of which varies depending on the tasks set. Such an additive as glass, changing the physical properties of the material, significantly improves its characteristics, there are the following types of such concrete: glass concrete with fiber, concrete with optical fiber, with cullet, and also a solution where glass is used as a binding element. Liquid glass, when added to concrete, helps to improve the stability and strength of plaster and concrete structures. When using this material, you can find a lot of positive things. The environmental friendliness of the material expands the scope of its use, which is very important at the present time. The new material is easy to obtain, is made from affordable materials, has improved physical and mechanical characteristics, which makes it competitive among a wide range of products on the global construction market.
Keywords: polymer concrete, liquid glass, glass concrete, optical fiber, cullet, modification, strength, composite material, glass fiber concrete, secondary raw materials
The article provides the information about the erection procedure of a 50.3 m span truss of a multifunctional sports complex in Nefteyugansk, Russia. The expediency of the considered large-span structure in finished form was substantiated by authors. The advantages and disadvantages of the options for choosing the erection procedure were analyzed in detail. Both types of finished truss erection were simulated in Autodesk Revit software: erection with one crawler crane and with two truck mobile cranes. The advantages and disadvantages of these two methods were observed. Erection process with two truck mobile cranes Liebherr LTM 1160-3.1 does not require complicated motions on the construction site, however it is imposiible with intalled beams between coloumns. For erection process with one crawler crane Liebherr LTM HS 855 HD temporary roads is not necessary, but this crane needs special transport for delivery on site.
Keywords: large-span structure, truss, erection in finished state, suspended cantilever method, jib crane, mobile crane, crawler crane, lifting equipment
The existing methods of quality control of work in construction are considered, the main purpose of their implementation is formulated. A list of the main signs and properties has been determined for which it is recommended to exercise control. The main methods of control in practice are listed on the example of a nine-story residential building. New ways to improve quality control in the production of works are proposed.
Keywords: control, quality, construction, normative document, defect, damage, tool, BIM, information modeling