Have been given the substantiation of the need for preliminary testing of concrete beams on the transverse force. Their goal is to determine the effect of inclined cracks formed at the operating load levels, on the efficiency of the composite reinforcement in the near support sections. The results of these tests, obtained with the shear span 1,5h0; 2h0 and 2,5 h0, that significantly affects the nature of inclined cracks. According to the results of an experiment formulated recommendations for the design of composite reinforcement.
Keywords: concrete, reinfrcement, reinforced concrete composite, CFRP, strengthening, crack, stress level, clamp, shear span, strength
There were considered the processes of electrochemical coagulation and contact filtration for clarification, bleaching and disinfection of the Don River. There were made the experiments to compare electrochemical coagulation to chemical treatment of water with different reagents in conditions of contact filtration. There were defined feculence change, water chromaticity depending on reagent dose and the changе of the total microbial number.
Keywords: Extraordinary situations, water-supply, coagulation, clarification, bleaching, filtration, purification effect.
The article presents the algorithm of repair work for electricity pilons of transmission line.The technical diagnostics based on complex method includes a visual inspection, instrumental and vibration diagnostics for electricity pilons of transmission lines. Pilons has defects: inclined cracked faces with a length of 25-30 cm , with a crack width of 0,4-0,7 mm . Were selected effective repair compositions for restoring reinforced concrete structures rack transmission towers:modified fine-grained concrete, polymer concrete. The article presents an example of analytical modeling of natural vibrations of a reinforced concrete pilons of transmission lines with defects in the base. This article contains a list of repair works. The material presented can be used in the development of methods of diagnostics and monitoring of technical condition of different structures of the core type.
Keywords: Algorithm, repair, category of defects, non-destructive testing methods, pilons of transmission lines, vibrodiagnostics
This article discusses the possibility of using alternative materials in the construction of temporary roads for construction of oil and gas fields. It considered a number of difficulties when applying the traditional plank roads. To simplify the temporary roads provided the use of mobile devices pavements (MDP). MDP described qualitative characteristics considered designs of pavements using this material. It outlines the main advantages of pavements with MDP over plank roads. Also performed a feasibility study for the use of the advantages of the TIR instead plank flooring. As a result, it was concluded that the use of mobile pavement for temporary roads devices in the regeneration of oil and gas deposits is a reasonable and effective alternative to plank roads.
Keywords: Plank roads, mobile devices pavements (MDP), swamp types I and II, process flows, a feasibility study, the payback period
The paper summarizes the most common trenchless technologies among the variety of pipeline reconstruction methods which are implemented without destroying old pipelines. It demonstrates the key benefits of the methods under review as well as their principal deficiency. The significance of these technologies, according to the author, is associated with environmental safety and economic efficiency they assure for construction works performed under unstable soil conditions as part of dense urban development. Special attention is given to such relining methods as Swagelining, Upex, Rolldawn, and U-Liners, and more light is shed on innovative technologies, such as GFK-liner (Germany) and Insituform (Great Britain). It is emphasized that the pipeline relining methods discussed in the paper, along with their undisputable strengths, have certain deficiencies, primarily related to a decreased throughput capacity of pipelines. This is why the need for use of nano and composite materials to line the inner space of a reconstructed pipeline should be made a priority.
Keywords: pipeline, relining, technology, method, fiberglass sleeve, polyethylene pipe, sliplining, pushing, composite material, environmental safety
This part of the paper focuses on individual areas of survey of trenchless technologies for renovation of pipeline systems. It underlines the relevance of the technology and maintains that the choice of any specific work method should be based on economic as well as environmental and technological criteria. It describes certain performance techniques and deals more closely with the pipeline replacement methods featuring hydraulic rod-type destroyer, pneumatic splitter, and rope winch. It is noted that the technologies in question help save material and labor resources and reduce economic costs through optimized timelines and earthwork scopes. Also, trenchless technologies, despite their technological constructability and environmental friendliness are shown to require further improvement in order to minimize adverse impacts on the lithosphere and atmosphere.
Keywords: pipeline, renovation, technology, method, replacement, rod-type destroyer, pneumatic splitter, rope winch, benefits, environmental safety
To the design of roofs and ceilings of modern buildings have high requirements on the bearing capacity and the architectural expression. The article considers a constructive solution to the coating of the building with light cross farms. The spatial work of such coverage is provided by bonds arranged in two directions farms, perceiving external load. The increase in hardness of the coating leads to a decrease in effort in some parts of the coverage. This allows the use of thin-walled steel profiles with less consumption of steel to cover in comparison with splenomegalie rolling beams. It is proposed to use various options of the arrangement of spatial units: 18x18, 24x24, 24х18, etc. the Overall structural stability is ensured by the fact that the coverage is created a few of these spatial blocks around the perimeter. The calculations allowed us to obtain the optimal size and number of cells on which it is conditionally possible to divide the disk coating.
Keywords: Coating, cross-system, thin-walled, calculation, comparison
The market in Russia is common formwork caisson ceilings SkyDome system.In the article the question of the effectiveness of ribbed caisson ceilings in multi-storey monolithic buildings compared to with .flat slab floor. The program complex "Lira-CAD 2013" calculated the 18-storey residential buildings with monolithic framework. Consider in detail the reinforcement floors typical floor in two versions: a flat of 200 mm and a caisson plate of 50 mm and beams with a section of 200х350 mm with a step of 900х900 mm. Analysis of the results showed that in a building with columns a step of about 5 m difference in cost of materials for the manufacture of the overlap was about 1%. Efficiency gains are expected by increasing the span up to 8 ... 10 m
Keywords: caisson, flat slab floor,monolithic framework, modular falsework of SkyDome, structural calculation, LIRA-CAD
Results of the researches on assessment of pollution of urban air environment conducted by foreign and Russian authors by fine dust of a natural origin are given in article
Keywords: quality of air, dust, fine particles, natural origin, atmosphere
The article is devoted to the application of unmanned aerial vehicles to obtain the operational information about the status of oil trunk pipelines and areas along them. It is dealt with some of the problems that arise during the operation of the branched trunk pipeline systems. It is described in short the existing methods of monitoring pipelines and disadvantages of their use. The paper proposes the introduction of unmanned aerial vehicles to solve the problems. It is spoken in detail about the main advantages and the characteristics of various types of UAV. The text describes some of the tasks that can be solved with the help of several types of shooting. Also, it is shown a matter of choice between creating its fleet of drones and purchase of services from third party companies. In conclusion, the article points out that use of unmanned aerial vehicles for monitoring of oil trunk pipelines saves money and opens new possibilities for the safe operation of pipeline transport.
Keywords: UAV, unmanned aerial vehicle, drone, monitoring of pipelines, oil trunk pipeline, pipeline transport, technology and organization of construction, oil and gas complex, innovative technologies
The article presents a study on the determination of the resistance to accumulation of residual deformations of asphalt concrete, SMA-11 on the device dynamic tests (PDI) the advantage of these over asphalt concrete stone mastic asphalt concrete SMA-10 GOST 31015.
Keywords: asphalt concrete, stone mastic asphalt concrete mixture, the grain structure, sieve, fraction, residual strain
The results of researching the speed of increasing strength of modified concrete materials in early period of hardening used for mounting underground structures are given. As a result of researching the most effective supplements like D5 and RELAMIX T-2 are determined. The composition of supplement D5 with fillers of ordinary quality and a con drafting 15 sm, it will gain high strength of 6.5 MРa in 18 hours while with RELAMIX T-2 fillers it will be 2.8 MРa. The given results were used for modeling stress strained state of ground mass and concrete fastenings of non- circular shape.
Keywords: Рassage, fastening, composition of concrete, modifier, concrete strength, young modulus, stresses
The article presents the result of research methods investment management from the perspective of innovation as a actor of control of the future. The analysis of the probability of development, the mechanism of investment management in terms of the control of the projected quality of the product.
Keywords: еconomics of the industry, organization and management in construction, innovation, investment, enterprise management
In this article the territory of the city of Rostov-on-Don is considered and engineering-geological conditions for the purpose of construction of buildings and constructions on a monolithic base plate of small laying are analysed. The schedule of dependence of the limit module of deformation on pressure under a base sole is constructed. The analysis of engineering-geological conditions in the city of Rostov-on-Don is made, and also the map and the chart of distribution of the average module of deformation in his territory are made.
Keywords: the average module of deformation, extreme draft of a subfoundation, pressure under a base sole, a monolithic base plate
In the construction of linearly extended objects, there are difficulties related to the optimization of flows. This requires the rational distribution of construction machinery fleet. The stream will be optimal only in the case when all processes are performed optimally. Rational distribution of the fleet is that the volume of construction works between the machines assigned in accordance with their highest load. Thus the performance is improved when in-line method of construction, which, in turn, should reduce the cost of socially necessary labor per unit produced by this company products
Keywords: flow, construction, method, process, technology, roads, land, machinery
To preserve the historical integrity of the city it is necessary to use individual approach to reconstruction in strict accordance with the rules of land use and development. Analysis of the housing stock the Central part of the city of Rostov-on-don was produced using data from the monitoring of its technical condition and showed that the Central part of Rostov-on-don residential buildings of old buildings, low rise and an unsatisfactory technical condition, proves the need for a comprehensive reconstruction. Over the past five years in the Central part of the city the construction of high-rise buildings in area of historic buildings, leading to disruption of its historic appearance.
Keywords: reconstruction of the urban environment, the construction of high-rise buildings, the violation of the historic appearance, information-analytical system utilities, GIS database, land use and development
The paper presents results of research of construction technology domed structures made of laminated veneer lumber. Proposed organizational solutions for improving the production of building materials applied technology and semi-finished wood.
Keywords: economy sector, organization and management in construction, construction technology and building materials.
This article discusses the engineering-geological investigations for the development of working documentation for the construction trestle of technological pipelines of CCGT-410 at Nevinnomyssk Gres. Offers recommendations to optimize development of design documentation for the construction trestle of technological pipelines.
Keywords: Geological Engineering, building, overpass, geology, soil, structure, project relief, operation, working documentation
considers the questions of improvement of road winter road Bilibino – Anyuisk held in the area of Bilibino. On the basis of the calculations for modeling correspondences and intensity of movement of motor transport on the roads on a 20-year term.The calculations of the volumes of freight and passenger traffic calculated annual mean daily intensity and composition of motor traffic for the year 2016 and the forecast for 2020 and 2030 for the construction of corrugated metal pipe of large diameter with approaches across the Creek Midday on 150 km of an improved winter road with an extended period of exploitation Bilibino – Anyuisk also given in the article
Keywords: construction, automotive, station, passenger transport, winter road, the length, zoning, space, roads, Chukotka
This article examines the question of the competence approach to the formation of secondary linguistic personality profile of graduates in technical universities. We study the core competencies needed to practice a technician, it is suggested improving the basic training course
Keywords: linguistic identity, applied linguistics, profiling the university, education technique
The article describes how to maximize the value of investment and construction of housing projects on the basis of stakeholder approach. The proposed model of value-oriented management, based on stakeholder-approach allows you to set goals not only on financial performance, but also to balance the interests of all stakeholders of the project
Keywords: projects; housing; value-based management
The article describes how to maximize the effectiveness of organizational and technological systems in the construction at the expense of a comprehensive approach to the organization and management of production
Keywords: projects; housing; value-based management
The article describes how to maximize the effectiveness of the quality standard of organizational and technological systems in the construction at the expense of a comprehensive approach to the organization and management of production projects; housing; value-based management
Keywords: projects; housing; value-based management
Formed approach to consistent spatial interaction of coastal development and water-based eco-sustainable and bio-positive forming. Presents a theoretical model of the contact zone "river – city" as a tool for assessment and design modeling, describes the structure of the contact areas. Introduces the concept of "interface area" as the area of information exchange and relationships between the properties of the waters and formed or reconstructed architectural context. Presents seven private "fields of interaction" between the water area and coastal urban development: a field of spatial interaction, composition, decorative plastic, functional, visual, emotional and imaginative, historical and cultural interaction. Describes the possible qualitative criteria in the evaluation of the interaction of natural and architectural base in the contact zone of "river town". The system is represented by the fields of interaction can act as a tool for project simulation, as well as a means of organizing data, evaluating and comparing the positive and negative impacts on landscape complex area.
Keywords: waters, coastal development, modeling, surface area, eco-sustainability, food-grade, biodegradable shaping, the interface area, the field of interaction
The article describes how to maximize the profit of investment and construction projects on the basis of organizational and technological approach. The proposed model is value-based management based on organizational approach allows you to set goals not only on financial performance, but also to balance the interests of all projects
Keywords: projects; housing; value-based management