scholarly journals THE ALGORITHM OF COMPLEX DIAGNOSTICS OF TECHNICAL CONDITION OF BUILDING STRUCTURES ON THERMOGRAMS ANALYSIS

2020 ◽  
pp. 23-28
Author(s):  
D. Karpov
Keyword(s):  
Construction Projects ◽  
Thermal Power ◽  
Technical Condition ◽  
Building Structures ◽  
Structural Elements ◽  
Highly Qualified ◽  
Energy Survey ◽  
Measurement Base ◽  
Actual Mass

the algorithm of complex diagnostics of a technical condition of building constructions and structures on the analysis of thermograms is offered. An attempt is made to systematize and logically build a sequence of stages of energy inspection of heat-consuming and heat-generating construction projects and their structural elements. The presented algorithm includes the main stages performed in such surveys. It differs from the known technologies of energy monitoring of buildings and structures by the presence of two additional stages, which are an integral part of any energy survey: determination of the relative surface humidity of building structures and the actual mass flow of coolant through the heating device for the analysis of thermal images. The implementation of energy (thermal imaging) and technical inspections according to the presented structural scheme requires not only the presence of appropriate instrumentation and measurement base, but also the involvement of highly qualified specialists (civil engineers, thermal power engineers, thermal physicists, operators-thermographers, etc.).

scholarly journals Algorithm for Integrated Non-Destructive Diagnostics of Technical Condition of Structures of Buildings and Constructions Using the Thermogram Analysis

2020 ◽  
Vol 161 ◽  
pp. 01040 ◽  
Author(s):  
Denis Karpov ◽  
Anton Sinitsyn
Keyword(s):  
Thermal Imaging ◽  
Thermal Power ◽  
Heating System ◽  
Technical Condition ◽  
Field Analysis ◽  
Building Structures ◽  
Highly Qualified ◽  
Logical Sequence ◽  
Non Destructive

An algorithm for integrated non-destructive diagnostics of technical condition of structures of buildings and constructions using the temperature field analysis is proposed. An attempt is made to systematize, characterize and build a logical sequence of stages for energy inspection of heat-consuming and heat-generating construction objects and their structural elements. The presented algorithm differs from the well-known technologies for energy monitoring of buildings and structures by the presence of two additional steps, which are an integrated part of any energy examination: determination of the relative surface humidity of building structures and the actual mass flow of coolant through a heating system using qualitative and quantitative assessment of thermal images. The implementation of energy (thermal imaging) and technical examinations according to the presented structural scheme requires appropriate equipment, as well as involvement of highly qualified specialists (civil engineers, thermal power engineers, thermal physicists, thermal imaging operators, etc.).

scholarly journals Nalysis of Changes to Steel Footbridge Geometry Within 25 Years in Service

2018 ◽  
Vol 28 (2) ◽  
pp. 164-176
Author(s):  
Jacek Sztubecki ◽  
Adam Bujarkiewic ◽  
Justyna Sobczak-Piąstka ◽  
Tomasz Janiak ◽  
Jarosław Gajewski
Keyword(s):  
Service Life ◽  
Technical Condition ◽  
Frame Of Reference ◽  
General Analysis ◽  
Bridge Structure ◽  
Structural Elements ◽  
Bridge Structures ◽  
Special Value ◽  
Static Operation

Abstract Identification of the technical condition of bridge structures should be supplemented by determination of structural displacements in relation to the adopted frame of reference and measurement of changes to the geometry of its individual elements. Of special value are the results of measurements of the same values obtained along an extended service life. They provide an opportunity to compare results, track down tendencies, and more quickly recognise signs of aggravating technical condition of structures. The paper presents an analysis of changes to the geometry of a bridge structure – a cable– stayed footbridge used for pedestrian and bicycle traffic across the Brda river in Bydgoszcz. Measurements were made by means of surveying techniques within a period of 25 years of the structure service life. The collected data enabled numerous comparative analyses to be conducted. Displacements of footbridge structural elements observed across time led to formulation of recommendations for further use of the footbridge. For instance, recommendations for footbridge adjustment, including improvement of its geometry, were provided. In addition, a general analysis of the effect of footbridge displacements on its static operation was conducted.

Determining The Service Life Of Structures, Buildings And Facilities

2020 ◽  
pp. 12-17
Keyword(s):  
Service Life ◽  
Construction Projects ◽  
Operation Time ◽  
Residential Building ◽  
Technical Condition ◽  
Komi Republic ◽  
Production Costs ◽  
Residual Service Life ◽  
Current Economic Situation

The determination of the service life (residual resource) of buildings and structures during operation and during reconstruction becomes particularly relevant, because the current economic situation requires a significant reduction in production costs, which is facilitated by the use of sound scientifically and in detail developed strategies for the operation of construction projects, including the conduct of scheduled-preventive and capital repairs. The article considers the existing methods of determining the residual service life of structures of buildings and facilities in Russia. The necessity of updating and correcting the above methods in terms of clarifying the significance coefficients for elements of buildings is justified, as well as recommendations for supplementing the State Standard "Buildings and Structures. Rules for Inspection and Monitoring of Technical Condition" are made. The methods considered in the article make it possible to estimate the physical depreciation and the remaining operation time of buildings before capital overhaul based on the technical condition of the building, obtained on the basis of the survey, which is confirmed by the considered example of a residential building in the city of Sosnogorsk (Komi Republic).

scholarly journals DETERMINATION OF TECHNICAL CONDITION OF BUILDING CONSTRUCTIONS BASED ON COMPREHENSIVE ASSESSMENT OF BUILDING PRODUCTION

2019 ◽  
pp. 22-27
Author(s):  
А. Малахов ◽  
A. Malahov ◽  
В. Косинов ◽  
Viktor Kosinov
Keyword(s):  
Technical Condition ◽  
Comprehensive Assessment ◽  
Structural Elements ◽  
Industrial Facilities ◽  
Engineering Research ◽  
Industrial Buildings ◽  
Metal Frame ◽  
Capital Construction ◽  
Instrumental Control

The article deals with the issues related to the assessment of the technical condition of structural elements, taking into account the stages of engineering research, design and installation. The importance of the topic under consideration is due to a large number of accidents at civil and industrial facilities that occur before the exhaustion of the bearing capacity. The analysis of the object (the metal frame of industrial buildings) is carried out on the basis of project documentation, data obtained by a full-scale survey, visual and instrumental control, numerical methods of research. The qualitative and quantitative parameters of the capital construction object necessary for assessing the technical condition are presented. They include design schemes of frame structures, materials, their characteristics, defects and parameters. The study shows the importance of comprehensive assessment of capital construction facilities in terms of constructive safety. Identification of errors at each stage of construction allows to prevent emergencies that lead to the destruction of the load-bearing system and to develop measures to establish the possibility (impossibility) of repair or reconstruction

scholarly journals Automated identification of construction works and structural elements at an early stage of investment and construction projects’ implementation

2021 ◽  
Vol 263 ◽  
pp. 03008
Author(s):  
Alexander Ginzburg ◽  
Ilya Tyurin
Keyword(s):  
Construction Projects ◽  
Early Stage ◽  
Subsequent Development ◽  
Data Bank ◽  
Building Structures ◽  
Structural Elements ◽  
Automated Identification ◽  
Design Solutions ◽  
The Cost ◽  
The Impact

The article discusses the issues of construction objects pricing in terms of the formation of certain types of costs and an analysis of their interrelationships based on the generated data bank of design and estimate documentation of implemented state investment construction projects. Special attention is paid to the research of the impact of changes in design solutions on the cost of construction. Approaches to the reorganization of the established design technology are proposed. These approaches use automated identification of construction work and structural elements based on the method for assigning criteria for the selection of building structures that are supposed to be erected around the technological space specified by the customer. The selection criteria established in this way assist designers in finding optimal design solutions for the subsequent development of working documentation.

scholarly journals Comprehensive Restoration of an Efficient Technical Condition of the Bearing Brickwork, Having Physical Wear

2020 ◽  
Vol 24 (2) ◽  
pp. 60-72
Author(s):  
S. V. Dubrakov ◽  
K. O. Dubrakova ◽  
A. V. Masalov
Keyword(s):  
Residential Building ◽  
Technical Condition ◽  
Building Structures ◽  
Foundation Soil ◽  
Adverse Conditions ◽  
Area 7 ◽  
Blind Area ◽  
Heating Water ◽  
Inspection Work

Purpose of research. Inspection and assessment of the technical condition of the enclosing structures of a residential building located at st. Engelsa, 107 in Kursk were carried out in connection with the development of the reinforcement project.Methods. Inspection of the technical condition of buildings and structures is necessary to determine the residual resource and service life of the building structures. The current regulatory documents require an examination of the technical condition of buildings and structures no later than two years after their commissioning. In the future, the inspection of the technical condition of buildings and structures is carried out at least once every 10 years and at least once every five years for buildings and structures or their individual elements operating in adverse conditions (aggressive environments, vibrations, high humidity, seismicity of the area 7 points and more, etc.). A permanent monitoring regime is established for unique buildings and structures.Results. In the process of examining a residential building located at st. Engelsa, 107, the following tasks have been solved: determination of damage to enclosing structures; analysis of the results of the study of the degree of wear of building structures; implementation of proposals for strengthening the brickwork. To eliminate the above damages, a proposal was developed to increase the rigidity of the above-foundation part of the building, having previously excluded soaking the foundation soil: by repairing the blind area and heating, water supply and sewerage networks.Conclusion. The solution of a narrow task of strengthening individual structures of buildings and structures may not give the desired result, therefore, when performing inspection work, it is necessary to consider the existing defects and damage in the complex. Within the framework of this work, we consider the strengthening of the load-bearing walls of a residential building with an increase in the overall rigidity of the above-foundation part of the building and the elimination of individual damages.

scholarly journals Methodology remaining lifetime determination of the building structures

2018 ◽  
Vol 230 ◽  
pp. 02023 ◽  
Author(s):  
Yuriy Otrosh ◽  
Andrii Kovalov ◽  
Oleg Semkiv ◽  
Irina Rudeshko ◽  
Valentin Diven
Keyword(s):  
Structural Damage ◽  
Residual Life ◽  
Technical Condition ◽  
Building Structures ◽  
Design Elements ◽  
Fixed Assets ◽  
Technical Examination ◽  
Effective Use ◽  
Technical Solutions

The paper proposes an approach to determining the increase of the normative lifetime of building structures on the basis of the algorithm of numerical calculation of the residual life of structures, which is performed on the basis of the results of defining parameters obtained during the technical examination and evaluation of defects, failures and structural damage. To calculate the structures, the simulation of the stressstrain state of the building structures with the involvement of OK LIRA was used. Simulation allowed performing optimization of technical solutions and strengthening of structures for buildings. The methodology is used to design elements for strengthening the structures of buildings and structures. Reliable estimation and forecasting of the technical condition enables to prevent the occurrence of accidents of structures and their associated losses, to use rational use of funds for current and capital repairs, and to regulate the technical condition in such a way as to achieve the most effective use of fixed assets.

scholarly journals Development of Devices for the System of Monitoring the Strength Features of Concrete in Operated Buildings and Structures Based on the Ultrasonic Pulse Method

2019 ◽  
pp. 22-27
Author(s):  
Ya. Serikov
Keyword(s):  
Building Materials ◽  
Pulse Method ◽  
Ultrasonic Pulse ◽  
Technical Condition ◽  
Structural Elements ◽  
Survey Results ◽  
Static And Dynamic Loads ◽  
Object Material ◽  
Negative Factors

  Operation of buildings and structures for various purposes is accompanied by an impact on their structural elements, building materials, and a complex of negative factors. These factors include the lifespan, climatic parameters, static and dynamic loads, dustiness, air pollution, etc. Their action worsens the physico-mechanical characteristics, the structure of concrete. This reduces the reliability of structural elements, reduces the life of the construction object. In DBN V. 1.2-14-2009 «The system of ensuring the reliability and safety of construction objects» set the classification of construction objects by classes of consequences in the event of an accident. The estimated lifetimes of each type of construction objects are also determined. Extension of life is allowed only after inspection and evaluation of the technical condition of the construction object, material characteristics, through the determination of the degree of their compliance with regulatory requirements. The importance of obtaining reliable survey results requires the improvement of relevant instruments and metrology. The described developed system of monitoring of construction objects, as well as instrumentation and system based on the ultrasonic pulse method. They are designed to control the physico-mecha-nical characteristics, the structure of concrete and other building materials. The developed devices and system are characterized by increased accuracy, reliability and reliability of measurements.

DETERMINE THE EFFECT OF DESTRUCTION OF ELEMENTS OF THE BASE ON GENERAL TECHNICAL CONDITION OF HOUSING FACILITIES

2014 ◽  
Vol 2 (3) ◽  
pp. 0-0
Author(s):  
Марина Шутова ◽  
Marina Shutova ◽  
Анатолий Субботин ◽  
Anatoliy Subbotin ◽  
Сергей Болдарев ◽  
...  
Keyword(s):  
Construction Projects ◽  
Standard Procedure ◽  
Technical Condition ◽  
Actual State ◽  
Technical Inspection ◽  
Physical Deterioration ◽  
General Technical ◽  
Housing Facilities

The article is devoted compared the results of determination of physical deterioration and condition of foundations housing facilities according to the standard procedure and the actual state of foundations, estimated by the results of a full technical inspection of construction projects

scholarly journals DIAGNOSTICS OF THE TECHNICAL CONDITION OF THE HISTORICAL BUILDING AT THE ADDRESS: MOSCOW, 2ND VOLKONSKY LANE, 5, P. 1.

2020 ◽  
Vol 3 (1) ◽  
pp. 104-110
Author(s):  
V. Zhelninskiy
Keyword(s):  
Technical Condition ◽  
Building Structures ◽  
Structural Elements ◽  
Historical Buildings ◽  
Important Work ◽  
Historical Building ◽  
Load Bearing ◽  
Actual Load ◽  
Technical Solutions ◽  
Changes In Soil Properties

this article discusses the restoration of a historical building, which is an extremely responsible and important work to preserve the valuable Fund of historical buildings in Moscow. With the participation of the author, the work was performed to diagnose the technical condition of the historical building and develop technical solutions for restoring structural elements of the building that have lost their original properties. A set of measures to determine and evaluate the actual values of controlled parameters that characterize the performance of the object of inspection and determine the possibility of its further operation, reconstruction or the need to restore, strengthen, repair, and includes a survey of the soil base and building structures to identify changes in soil properties, deformation damage, defects of load-bearing structures and determine their actual load-bearing capacity

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