The results of a computational experiment performed in the Lira-SAPR environment are considered in the article. The purpose of the experiment is modal analysis of various structural schemes of multi-storey reinforced concrete frame under pulsating and seismic influences. The considered design schemes differ in the ratio of the frame and diaphragm components of the frame. It was calculated three series of samples, differing by the ratio of rigidity. The stiffness ratio varied from 20% to 65.9%. Within each series calculations were performed for seismicity of 7, 8 and 9 points. For each variant of seismicity, the soils of the 1st, 2nd and 3rd seismicity categories were considered. It is established that when the role of the frame part increases, the distribution of the modal masses shifts towards the lower forms of oscillations, and the numerical values of their frequencies decrease. Accelerations of the nodes of the coating from the ratio of rigidity do not depend. They increase with increasing seismicity of the site. The ratio of stiffness affects the total consumption of the reinforcement of slabs. This influence is significant in the range of values of the ratio from 20.5% to 42.5%. Further increase in the ratio of stiffness to the consumption of reinforcement influences slightly.

Keywords: seismicity, category of soils by seismic properties, modal analysis, rigidity, selection of fittings, PC Lira-SAPR

The purpose of this article is to identify shortcomings in the construction of prefabricated buildings and structures on the basis of an analysis of a number of scientific publications of domestic and foreign scientists. Since not only buildings, but also structures can be prefabricated, it is proposed to use the term "fast erectable building systems" (BSS). It is noted that, despite the great advantages of the FSU, at the current stage of development they do not fully meet the requirements of reliability, energy efficiency, rationality and comfort, suitability for operation under any climatic conditions.

Keywords: prefabricated building, view, technology, field of application, dignity, defect

Article is devoted to studying of a possibility of realization of the principles of probability projection of structural production on the example of technological operation of the device of reinforced concrete walls and partitions.

Keywords: construction, model operation, probability projection, reliability

The article describes the relevance of the design of tall buildings. A characteristic feature of high-rise buildings is preferential perception of horizontal loads under the impact of the wind flow. Therefore, the stiffness stems represent the most characteristic for high-rise construction internal vertical support structure.

Keywords: high-rise building, strength, reliability, a horizontal load, the core stiffness, trunk stiffness, the layout structure, column, frame, diaphragm stiffness

The article is devoted to the problem of determining the air flow through cracks in the enclosing structures using numerical methods. Based on the study of the data obtained during the visual inspection, it was found that most of the apartment buildings have significant physical wear, which is mainly characterized by the presence of cracks. Particular attention is paid to the assumptions made for the design scheme. On the basis of the equations of dynamics and continuity, a mathematical model is obtained that allows one to predict the airflow through the crack

Keywords: physical wear, air mass flow rate, crack, permeation, water steam, heat and mass transfer, controlled environment, visual examination, air change, air permeance, numerical methods

Using simulation and finite element method calculations of stress-strain state of monolithic concrete support for underground structures with non-circular outlines made of fast-hardening concrete are carried out in the paper. Based on the obtained results, the maximum stress zones and their magnitude in the reinforced concrete support are established. The stresses are compared with circular-form supports. The factors influencing the stress state of the support are determined.

Keywords: Underground structures; soils; concrete support; voltage; the experiment plan; modeling; finite element method

The article considers the main ways to increase the energy efficiency of the designed buildings, taking into account the natural, climatic and spatial conditions of the territory, as well as methods for increasing energy efficiency using energy-saving materials and equipment, and applying the corresponding spatial, architectural, planning and constructive solutions.

Keywords: Energy saving, heat supply, energy efficiency, environment, territorial development, wind impact, insolation, alternative energy sources

The paper provides summary the problems of estimating high-rise buildings to a progressive collapse. The analysis of the structure of the technique for calculating the skeleton of the building for a progressive collapse is performed. Recommendations are given on the properties of reinforced concrete carcass elements for emergency actions. An imitation simulation of the emergency response using the finite element method in calculating the building frame for progressive collapse was proposed; Modeling and investigation of the stress-strain state of individual elements of the building's frame for the effect of explosive loading; modeling and investigation of resistance to the progressive collapse of the skeleton of a high-rise building; development of constructive solutions to achieve resistance to progressive collapse.

Keywords: progressive collapse, special action, finite element method, building frame modeling, stress-strain state

The article gives judgments, focuses on the need for the development of military and town-planning sciences, based on the reality of practice, which, apart from armament, must take into account the urban and architectural components formed as a special kind of weapon of future wars.

Keywords: Urban planning, Armed forces, military science, architecture, defense infrastructure, housing

Abstract: preventing the formation of ice on roofs and gutters of buildings appears to be socially and economically significant goal, requiring efficient and effective decision-making. Roof and gutters heating has the potential to avert the loss of life and vehicles damage due to falling icicles. The costly package of measures of manual cleaning of roofs, which often leads to unscheduled repairs of roof , gutters and facades of buildings is thus not needed. A competent choice of the way of heating is able to provide positive social and economic benefits for the city and must be done according to the availability of specific types of energy resources ... The article justifies the applicability of water heating system that runs in both automatic and manual control. Such systems allow the use of heat supplied by CHP local boiler or gas compact heater.

Keywords: Key words: energy-saving technologies, water heating systems, convective heat transfer, heat transfer EFFICIENCY, electronic control unit, ecological efficiency, dependability, vandal resistance, social and economic effects

The article confirms the importance of garrison services in ensuring combat capability and combat readiness. It was stated that the service industry of any military town should become a heuristic model of building service networks for all other populated areas and their social groups.

Keywords: Garrison services, combat readiness, combat capability, Armed forces, architectural and planning organization, defense infrastructure

In the article the technique of calculation of thermal protection of protecting designs for economic reasons. In connection with constant growth of prices for electric and thermal energy, which is observed during the last years, particularly relevant is the problem of thermal protection of enclosing structures of buildings for energy savings. But still, the arguments for increasing the level of thermal protection of buildings are often of a declarative nature and is quite convincing as the random data from foreign sources, which are presented without analysis the lawfulness of their Association with the domestic data. The purpose of this study is to study methods of economic analysis increase in the level of thermal protection of enclosing structures. This article analyzes the economic feasibility of insulating the enclosing structures to a level that exceeds the sanitary-hygienic requirements.

Keywords: insulation, building envelope, method of minimum reduced costs, energy saving, thermal insulation material, energy-saving, operational performance

any project is created from separate but interrelated parts. If you try to combine technology and art, it may be a unique structure, eye-catching.

Keywords: inversion roofing, expansion joint, reserve stock complex, the panorama Museum, wind tunnel, highly explosive, multi-center Blue line, the handicapped, architectural appearance, design solution, legkousvaivaemyh design

Modern urban people face many problems of dense city construction. The article gives the modern construction methods research and reveals the technology for solving the given problem.

Keywords: domed city; atrium; cable-stayed construction; large-span shell; multi-layer cable system; unique buildings and constructions; green construction

The material of the C-profiles in question, manufactured by the continuous rolling method, is galvanized steel up to 3.0 mm thick. Thin-walledness and the shape of the cross-section, causes a number of features of the profiles under load. The valid design norms in addition to the basic geometric parameters of the cross-sections used in calculating the longitudinal and bending forces (A is the cross-sectional area, Sx, Sv are the static moments of the section, Ix, Iv, Ixy are the axial and centrifugal moments of inertia) , Suggest the use of sector-specific characteristics. These characteristics are peculiar only to thin-walled rods and are determined on the basis of the notion of a sectorial area. The problem of determining the geometric characteristics of a thin-walled C-shaped profile is considered. The center of the bending is taken to be the point with respect to which the moment from the tangential forces arising during transverse bending or torsion in the cross section is zero. The position of the bending center does not depend on the forces acting on the rod, but depends only on the shape and dimensions of the cross-section of the thin-walled rod.

Keywords: steel structures, calculation of structures, thin-walled, profile, c-shaped, geometric characteristics, bending center

The main maintenance of a diversification of production as activity of subjects of managing is considered. being shown in purchase of the operating enterprises, the organizations of the new enterprises, redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

In article idea of a significance and saturation of the area of a research is considered by objects of cultural heritage. Descriptions of the revealed monuments with their geographical bindings and bindings to reference points on the area are given. Options of actions for preservation of a historical and cultural monument are offered Voronezh - 2

Keywords: object of cultural heritage, archeology monument, historical and cultural expedition, detailed archaeological investigation

We consider eccentrically compressed rod elements of reinforced concrete structures. Problems are solved for the development of methods for calculating the strength of normal sections in the case of eccentric compression of reinforced concrete elements; calculation of the load-carrying capacity of reinforced concrete structures by the example of columns of varying flexibility for ultimate effort. Analytically, a calculation is made, which makes it possible to determine the strength of reinforced concrete structures.

Keywords: внецентренно сжатые стержни, железобетонные конструкции, прочность, нормальные сечения, колонны различной гибкости, несущая способность, предельные усилия

Examined the effectiveness of using aeration-lighting installation in the process of biological wastewater treatment.

Keywords: biological filter, biological treatment, energy efficiency, water treatment, lighting, aeroblast, biomass, activated sludge, microorganisms, aeration tank, aerator

Comparison of the results of the deformation and stiffness test of flexible compressed reinforced concrete colums strengthening with various variants of external transverse and longitudinal reinforcement by composite materials is given. The influence of the rigidity of the reinforcement elements on the deformation properties of the test samples with a cross section of 250x125 (h) mm is given for the flexibility λh = e0 / h = 20, which were tested at eccentricities e0 = 0; 2.0 cm (0.16h) and 4.0 cm (0.32h).

Keywords: concrete, reinforced concrete, columns, flexibility, composite materials, reinforcement, strength, deformability

The article presents the results of comparison of the average experimental values of the relative deformations of heavy concrete of class B34-35-εb and εbt, which were obtained by testing short compressed columns strengthening with external composite reinforcement based on CFRP. External transverse and longitudinal reinforcement, as well as types of stress-strain state were varied: conditionally centrally compressed elements (e0 = 0); elements loaded at small eccentricities, ie at e0 = 2.0 cm (0.16h) and large e0 = 4.0 (0.32h). The influence of various variants of composite reinforcement on the change in the stress-strain state of concrete at three values of the axial eccentricity e0 is estimated.

Keywords: concrete, reinforced concrete, reinforcement, prototypes, composite, compression, stretching, relative deformations

The problem of the stability of E.Reyssner plate on the three-dimensional elastic layer with predetermined constant elasticity. The end surfaces are smooth, communications holding layer. It is believed that the plate is in a flat stress-strain state of the effects on its cylindrical surface of the self-balanced load, with some numerical parameter characterizing the magnitude of the load at loss of stability of the plate. From the conditions of restraint ties, a system of equations for determining the numerical parameter. We give a method for calculating the lowest value of the parameter at which the fixed loss of stability of the plate. As special cases, the results of the classical theory and model of Winkler foundation.

Keywords: the self-balance loading, strained state, stress functions, stability loss

The article briefly considers the relevance of existing technology and formwork systems with widest application in recent years. Provides technology promising pneumoframe shuttering system. Explains the characteristics and positive aspects of using inflatable formwork system.

Keywords: formwork systems, concrete, concrete, frame, design, result, characteristic, advantage, disadvantage, installation

Discusses the construction of the supporting ring beams steel bins on separate supports. The problem for the development of algorithm and program of calculation of the reference ring beams, steel silos, the combined effect of bending and torsion. Analytically developed a calculation program that allows for the analysis work on the combined effect of bending and torsion when the geometric parameters of the cross section.

Keywords: basic ring beam for steel silos at certain poles, steel silos, bending, torsion, geometric parameters of the cross section, normal tension, torsion torque, bimoment

Modern programmatic complexes, supporting BIM technologies, allow in the automatic mode to carry out a transition from the 3d-модели of building to the model analytical, and then to the calculation certainly to the element model of building, the calculation of that is conducted with the use of programmatic complexes being based on the use of method of eventual elements. The results of calculation of different variants of the net of eventual elements, generated by facilities of the programmatic complex SAPPHIRE, are considered in the article. As a model for a calculable experiment the fragment of monolithic multistory girderless framework is accepted. The knot of leaning of flag on a column was designed both with the use of absolutely hard body and without him. The step of triangulation was varied in limits a from 1/35 to 1/5 span. The article of analysis is choose the area of lower longitudinal armature along the axis "Х" in the middle of flight. It is set that not dependency upon a type and step of triangulation the use of absolutely hard bodies conduces to the decline of the armature required by a calculation on the average it is Also certain on 6 %., that type and step the triangulations used in the programmatic complex SAPPHIRE substantial influence on the result of selection of flight armature do not render. However it is necessary to take into account that this result is got for charts in that obligatory is eventual elements, the centres of gravity of that are situated in the middle of flight, to what it is needed to aim in the process of creation of computer model of building.

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