Pub Date : 2023-03-22DOI: 10.31649/2311-1429-2022-2-187-191
V. Smolyak, Anastasia-Yulia Koshova
The scientific research of the previous years in the field of theory and history of architecture created the prerequisites for creating a practical base for the opening of the architectural profession at the Faculty of BCI of VNTU. Recently, in the special council of the Architectural Institute of the Lviv Polytechnic University, a staff member of the FBCEI of the VNTU, Assoc. Smolyakom V.V. and graduate students Khorosa O.I. and Subin-Kozhevnikova A.S. defended candidate theses on the specialization "Theory and History of Architecture". The importance of the formation and creation of an architectural school at the Faculty of Construction, Civil and Environmental Engineering of the Vinnytsia National Technical University in the direction of fruitful scientific research in the field of the history of folk architecture of Eastern Podillia, Vinnytsia and the city of Vinnytsia as a whole. This fact became the starting point for the organization of a new architectural specialty at the faculty. Thus, one more important and interesting one will be added to the list of construction specialties at FBCEI - Architecture. Both teachers and new students are ready for thorough and productive study in a new direction. The presence of specialties related to urban construction, industrial construction and energy-efficient systems of providing buildings and structures will only help in providing basic and necessary skills to future architects. And the professional and scientific teaching staff meets the licensed requirements for opening a specialty, which will become a new branch of development of both the faculty and the university as a whole for new scientific achievements and new scientific research.
{"title":"CREATION OF ARCHITECTURE SCHOOL ON THE BASE OF ARCHITECTURAL SCIENTIFIC RESEARCH TO THE FBCEI VNTU","authors":"V. Smolyak, Anastasia-Yulia Koshova","doi":"10.31649/2311-1429-2022-2-187-191","DOIUrl":"https://doi.org/10.31649/2311-1429-2022-2-187-191","url":null,"abstract":"The scientific research of the previous years in the field of theory and history of architecture created the prerequisites for creating a practical base for the opening of the architectural profession at the Faculty of BCI of VNTU. Recently, in the special council of the Architectural Institute of the Lviv Polytechnic University, a staff member of the FBCEI of the VNTU, Assoc. Smolyakom V.V. and graduate students Khorosa O.I. and Subin-Kozhevnikova A.S. defended candidate theses on the specialization \"Theory and History of Architecture\". The importance of the formation and creation of an architectural school at the Faculty of Construction, Civil and Environmental Engineering of the Vinnytsia National Technical University in the direction of fruitful scientific research in the field of the history of folk architecture of Eastern Podillia, Vinnytsia and the city of Vinnytsia as a whole. This fact became the starting point for the organization of a new architectural specialty at the faculty. \u0000Thus, one more important and interesting one will be added to the list of construction specialties at FBCEI - Architecture. Both teachers and new students are ready for thorough and productive study in a new direction. The presence of specialties related to urban construction, industrial construction and energy-efficient systems of providing buildings and structures will only help in providing basic and necessary skills to future architects. And the professional and scientific teaching staff meets the licensed requirements for opening a specialty, which will become a new branch of development of both the faculty and the university as a whole for new scientific achievements and new scientific research.","PeriodicalId":221366,"journal":{"name":"Modern technology, materials and design in construction","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125820010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-22DOI: 10.31649/2311-1429-2022-2-176-180
Anastasia Oleniuk, Volodymyr Ocheretny
Of all the problems that exist today in the construction industry, the current problems of research in the field of architecture and urban planning, information modeling technology should pay special attention to the problems of modern design of urban construction. After all, few novice builders know about the design of buildings on the master plans of settlements on historical and architectural reference plans, as well as on zoning plans and on the most detailed plans of territories, which are strictly prohibited. Information assessment of the harmony of architectural form in the future can be used to formalize such aesthetic characteristics as scale, dynamism, rhythm and so on. The information method can become a reliable tool for harmonizing the entire architectural environment. Summarizing the above, the following ways of solving problematic issues related to the issuance of urban conditions and restrictions are suggested.
{"title":"MODERN PROBLEMS OF OBJECT DESIGN URBAN CONSTRUCTION","authors":"Anastasia Oleniuk, Volodymyr Ocheretny","doi":"10.31649/2311-1429-2022-2-176-180","DOIUrl":"https://doi.org/10.31649/2311-1429-2022-2-176-180","url":null,"abstract":"Of all the problems that exist today in the construction industry, the current problems of research in the field of architecture and urban planning, information modeling technology should pay special attention to the problems of modern design of urban construction. After all, few novice builders know about the design of buildings on the master plans of settlements on historical and architectural reference plans, as well as on zoning plans and on the most detailed plans of territories, which are strictly prohibited. Information assessment of the harmony of architectural form in the future can be used to formalize such aesthetic characteristics as scale, dynamism, rhythm and so on. The information method can become a reliable tool for harmonizing the entire architectural environment. Summarizing the above, the following ways of solving problematic issues related to the issuance of urban conditions and restrictions are suggested.","PeriodicalId":221366,"journal":{"name":"Modern technology, materials and design in construction","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127614486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-22DOI: 10.31649/2311-1429-2022-2-60-71
V. Popov, Alina V. Popova
The paper consist developed the method of arranging combined structures used as foundations for fragments of regional and local roads over small streams and spillways, which combine the functions of standard monolithic slab-type bridge structures and floodgate box structures. The proposed method is a more reliable alternative to modern standard solutions in the form of prefabricated concrete spillways or non-pressure pipes of a round cross section, which are installed over natural and artificial barriers of short length. In addition, the proposed constructive solution can have a dual use – as a floodgate in normal mode and a temporary shelter (reinforced concrete dugout) for the civilian population at the time of the air raid. Have been detailed described the proposed design solution, have been developed a finite element model of the stress-strain state of a structure, taking into account soil conditions under the action of a complex of loads, including temporary effects from wheeled vehicles. Have been localized the sections of the structures where the largest tension. Have been proposed a rational variant of their reinforcement. Have been confirmed the reliability and effectiveness of the proposed design solutions in the process of analyzing the results of finite element modeling. Have been generalized practical experience in the design and construction of a combined tunnel-type structure in the Dzhugastra village, Kryzhopilskyj district, Vinnytsia region. Have been described the technological sequence of performing construction and installation works on the installation of a structure according to the methodology proposed by the authors of the article.
{"title":"COMBINED TUNNEL TYPE FLOODGATES FOR ROAD FACILITIES","authors":"V. Popov, Alina V. Popova","doi":"10.31649/2311-1429-2022-2-60-71","DOIUrl":"https://doi.org/10.31649/2311-1429-2022-2-60-71","url":null,"abstract":"The paper consist developed the method of arranging combined structures used as foundations for fragments of regional and local roads over small streams and spillways, which combine the functions of standard monolithic slab-type bridge structures and floodgate box structures. The proposed method is a more reliable alternative to modern standard solutions in the form of prefabricated concrete spillways or non-pressure pipes of a round cross section, which are installed over natural and artificial barriers of short length. In addition, the proposed constructive solution can have a dual use – as a floodgate in normal mode and a temporary shelter (reinforced concrete dugout) for the civilian population at the time of the air raid. Have been detailed described the proposed design solution, have been developed a finite element model of the stress-strain state of a structure, taking into account soil conditions under the action of a complex of loads, including temporary effects from wheeled vehicles. Have been localized the sections of the structures where the largest tension. Have been proposed a rational variant of their reinforcement. Have been confirmed the reliability and effectiveness of the proposed design solutions in the process of analyzing the results of finite element modeling. \u0000Have been generalized practical experience in the design and construction of a combined tunnel-type structure in the Dzhugastra village, Kryzhopilskyj district, Vinnytsia region. Have been described the technological sequence of performing construction and installation works on the installation of a structure according to the methodology proposed by the authors of the article.","PeriodicalId":221366,"journal":{"name":"Modern technology, materials and design in construction","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130498503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-22DOI: 10.31649/2311-1429-2022-2-119-127
Ihor Babii, L.Yu. Kucherenko, O. Borisov, N. Oliinyk
The article provides a selection of the optimal organizational and technological solutions for the arrangement of translucent enclosing structures of an office building. Their selection was made on the basis of multi-criteria analysis. The following transparent facade systems were used as the object of the study: rack and transom facade; modular facade; warm-cold facade, spider glazing system, facade element, double facade. In order to make an optimal decision regarding the choice of a translucent system, the following evaluation criteria were selected: weight of the structure; construction cost; cost of performance of works; average category of works; laboriousness of work performance; ease of installation; the complexity of manufacturing translucent structures. The results of studies of the influence of the most significant organizational and technological factors on the installation of a translucent system for the office building being designed showed the following. Spider glazing is the optimal technological solution for installing a transparent enclosing structure of an office building. In turn, an effective fastening in the spider system for this house is the construction of the glazing fastening in the form of a rack made of pipes.
{"title":"CHOICE OF ORGANIZATIONAL AND TECHNOLOGICAL SOLUTIONS FOR ARRANGEMENT OF ENCLOSURE STRUCTURES OF OFFICE BUILDING WITH THE HELP OF MULTI-CRITERION ANALYSIS","authors":"Ihor Babii, L.Yu. Kucherenko, O. Borisov, N. Oliinyk","doi":"10.31649/2311-1429-2022-2-119-127","DOIUrl":"https://doi.org/10.31649/2311-1429-2022-2-119-127","url":null,"abstract":"The article provides a selection of the optimal organizational and technological solutions for the arrangement of translucent enclosing structures of an office building. Their selection was made on the basis of multi-criteria analysis. The following transparent facade systems were used as the object of the study: rack and transom facade; modular facade; warm-cold facade, spider glazing system, facade element, double facade. In order to make an optimal decision regarding the choice of a translucent system, the following evaluation criteria were selected: weight of the structure; construction cost; cost of performance of works; average category of works; laboriousness of work performance; ease of installation; the complexity of manufacturing translucent structures. \u0000The results of studies of the influence of the most significant organizational and technological factors on the installation of a translucent system for the office building being designed showed the following. Spider glazing is the optimal technological solution for installing a transparent enclosing structure of an office building. In turn, an effective fastening in the spider system for this house is the construction of the glazing fastening in the form of a rack made of pipes.","PeriodicalId":221366,"journal":{"name":"Modern technology, materials and design in construction","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133752732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-22DOI: 10.31649/2311-1429-2022-2-46-53
Yosyp Luchko, Yiriy Bodnar
This paper presents the generalized results of the analysis and synthesis of scientific and technical sources of investigation the heavy concrete on the basis of fracture mechanics for the last 25-30 years. New criteria and models for heavy concrete, which were obtained during this period have been described and generalized, in particular, a new deformation model of concrete crack resistance on the basis of fracture mechanics. The analysis of results of experimental and theoretical researches of heavy concrete crack resistance on disk-shaped samples at eccentric stretching by concentrated forces has been presented. A number of methods have been elaborated i.e. a method for experimental determination of the concrete crack resistance characteristics under static loads, a method for determining the length of the fracture zone in the crack, the relationship between the mechanical characteristics of heavy concrete and the parameters of acoustic emission measurement. The method of concrete cracking resistance with the addition of basalt fiber was also developed and the influence of basalt fiber on crack resistance and crack opening was studied in field tests. The generalized results have been presented. It has been stated about the significant development over the last three decades of methods for determining the strength, crack resistance and deformation of concrete in reinforced concrete elements from the standpoint of reinforced concrete mechanics and mechanics of concrete destruction. The conclusions about the expediency of using the Leonov-Panasyuk deformation model for concrete and the prospects for fictitious crack model have been made. On the basis of the generalized data given in the specified publications the technique of technical diagnostics and a technique of repair and restoration works at strengthening with use of modern technologies and materials has been developed that gives the chance to increase considerably a resource and reliability of reinforced concrete buildings and constructions.
{"title":"CONCRETE CRACK RESISTANCE CONSIDERING DESTRUCTION MECHANICS (REVIEW)","authors":"Yosyp Luchko, Yiriy Bodnar","doi":"10.31649/2311-1429-2022-2-46-53","DOIUrl":"https://doi.org/10.31649/2311-1429-2022-2-46-53","url":null,"abstract":"This paper presents the generalized results of the analysis and synthesis of scientific and technical sources of investigation the heavy concrete on the basis of fracture mechanics for the last 25-30 years. \u0000New criteria and models for heavy concrete, which were obtained during this period have been described and generalized, in particular, a new deformation model of concrete crack resistance on the basis of fracture mechanics. The analysis of results of experimental and theoretical researches of heavy concrete crack resistance on disk-shaped samples at eccentric stretching by concentrated forces has been presented. A number of methods have been elaborated i.e. a method for experimental determination of the concrete crack resistance characteristics under static loads, a method for determining the length of the fracture zone in the crack, the relationship between the mechanical characteristics of heavy concrete and the parameters of acoustic emission measurement. The method of concrete cracking resistance with the addition of basalt fiber was also developed and the influence of basalt fiber on crack resistance and crack opening was studied in field tests. The generalized results have been presented. \u0000It has been stated about the significant development over the last three decades of methods for determining the strength, crack resistance and deformation of concrete in reinforced concrete elements from the standpoint of reinforced concrete mechanics and mechanics of concrete destruction. The conclusions about the expediency of using the Leonov-Panasyuk deformation model for concrete and the prospects for fictitious crack model have been made. \u0000On the basis of the generalized data given in the specified publications the technique of technical diagnostics and a technique of repair and restoration works at strengthening with use of modern technologies and materials has been developed that gives the chance to increase considerably a resource and reliability of reinforced concrete buildings and constructions.","PeriodicalId":221366,"journal":{"name":"Modern technology, materials and design in construction","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133613643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-22DOI: 10.31649/2311-1429-2022-2-85-89
V. Doroshenko, Olexander Yanchenko
A short overview of promising directions of development in the field of construction of metal, in particular, mobile foundations, was made. This will contribute to the cheapening and popularization of such foundations, which can become a scientific and practical basis for foundation construction, in particular for modular construction based on metal structures. Unlike welded for bolted structures, installation is simplified and bolted connections provide the possibility of disassembling the structure with transportation to another place, which is important for hangars, warehouses that change location. An example of topological optimization of a mobile foundation design is given, and a mobile foundation design that uses the strut effect is considered, as well as a promising design for manufacturing using 3D technology. It was noted that an effective means of reducing the cost of metal structures is the reduction of metal consumption. Modern foundations, which are single massive structures, can be significantly lightened thanks to the use of prefabricated hinge-rod systems or solid cast metal structures with cavities, which do not significantly affect the stress-strain state of the foundation. Applied research methods: modeling, review and generalization of the studied materials, devoted to the issues of the article. The application of cast metal constructions, in particular those made by Lost Foam casting process, has significant opportunities. Examples of modeling of large castings and manufactured models using 3D technologies from the experience of foundry practice of PTIMA of the National Academy of Sciences are given. Construction using metal structures has all the prerequisites to become an effective solution in the construction industry, which will contribute to the reconstruction of our country, which receives metal from its own ores and is able to convert it into a high-tech, knowledge-intensive product, in particular in the form of lightweight construction metal structures.
{"title":"DESIGN OF METAL STRUCTURES OF MOBILE FOUNDATIONS AND FOUNDRY TECHNOLOGY FOR THEIR PRODUCTION","authors":"V. Doroshenko, Olexander Yanchenko","doi":"10.31649/2311-1429-2022-2-85-89","DOIUrl":"https://doi.org/10.31649/2311-1429-2022-2-85-89","url":null,"abstract":"A short overview of promising directions of development in the field of construction of metal, in particular, mobile foundations, was made. This will contribute to the cheapening and popularization of such foundations, which can become a scientific and practical basis for foundation construction, in particular for modular construction based on metal structures. Unlike welded for bolted structures, installation is simplified and bolted connections provide the possibility of disassembling the structure with transportation to another place, which is important for hangars, warehouses that change location. An example of topological optimization of a mobile foundation design is given, and a mobile foundation design that uses the strut effect is considered, as well as a promising design for manufacturing using 3D technology. It was noted that an effective means of reducing the cost of metal structures is the reduction of metal consumption. Modern foundations, which are single massive structures, can be significantly lightened thanks to the use of prefabricated hinge-rod systems or solid cast metal structures with cavities, which do not significantly affect the stress-strain state of the foundation. Applied research methods: modeling, review and generalization of the studied materials, devoted to the issues of the article. The application of cast metal constructions, in particular those made by Lost Foam casting process, has significant opportunities. Examples of modeling of large castings and manufactured models using 3D technologies from the experience of foundry practice of PTIMA of the National Academy of Sciences are given. Construction using metal structures has all the prerequisites to become an effective solution in the construction industry, which will contribute to the reconstruction of our country, which receives metal from its own ores and is able to convert it into a high-tech, knowledge-intensive product, in particular in the form of lightweight construction metal structures.","PeriodicalId":221366,"journal":{"name":"Modern technology, materials and design in construction","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134188138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-28DOI: 10.31649/2311-1429-2022-1-32-37
A. Morgun, I. Met, I. Shevchenko
Vinnytsia National Technical University Construction – is one of the prominent branches of the national economy in the historical aspect of its development. The leading task of the designing is to determine the strength of building structures. Therefore, TDS research and related calculations are most responsible in construction. Mathematical model of a technical object at the micro level is a system of differential equations in partial derivatives, the exact solution of which can be obtained only in a few partial cases, so a discrete model is built using numerical methods that use Poisson's idea . Intensive development and widespread use of computers significantly brought fundamental mathematical problems closer to applied ones, strengthened their interaction. The emergence of a new, powerful and general method of research - numerical experiment, as never before closely linked the physical content of the problem, its mathematical formulation, numerical methods of calculation and modern computers. The numerical method of boundary elements is used in the work. A promising way to develop foundations and foundation structures is the usage of the relations of the theory of plastic flow, and the level of development of soil mechanics significantly affects the efficiency and reliability of decisions. One of the types of raising the bearing capacity of piles is, in addition to taking into account the nonlinear work of the soil base, also the arrangement by expanding the soil base of gravel additives. Compacted soil in the heel area allows to transfer higher loads to the pile.
{"title":"SEARCH FOR RESERVES OF BEARING CAPACITY OF PYRAMIDAL PILES USING BEM","authors":"A. Morgun, I. Met, I. Shevchenko","doi":"10.31649/2311-1429-2022-1-32-37","DOIUrl":"https://doi.org/10.31649/2311-1429-2022-1-32-37","url":null,"abstract":"Vinnytsia National Technical University \u0000Construction – is one of the prominent branches of the national economy in the historical aspect of its development. The leading task of the designing is to determine the strength of building structures. Therefore, TDS research and related calculations are most responsible in construction. \u0000Mathematical model of a technical object at the micro level is a system of differential equations in partial derivatives, the exact solution of which can be obtained only in a few partial cases, so a discrete model is built using numerical methods that use Poisson's idea . Intensive development and widespread use of computers significantly brought fundamental mathematical problems closer to applied ones, strengthened their interaction. The emergence of a new, powerful and general method of research - numerical experiment, as never before closely linked the physical content of the problem, its mathematical formulation, numerical methods of calculation and modern computers. The numerical method of boundary elements is used in the work. \u0000A promising way to develop foundations and foundation structures is the usage of the relations of the theory of plastic flow, and the level of development of soil mechanics significantly affects the efficiency and reliability of decisions. One of the types of raising the bearing capacity of piles is, in addition to taking into account the nonlinear work of the soil base, also the arrangement by expanding the soil base of gravel additives. Compacted soil in the heel area allows to transfer higher loads to the pile.","PeriodicalId":221366,"journal":{"name":"Modern technology, materials and design in construction","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126987095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-28DOI: 10.31649/2311-1429-2022-1-73-78
Yuliya Prypoten, V. Kotenko, Sergey Bashinsky, Ihor Piskun
This paper discusses experimental studies of the operational efficiency of five boiler configurations: a direct combustion boiler with natural and mechanical draft, a long-burning boiler with natural and mechanical draft, and a pyrolysis boiler. It was found that only pyrolysis boilers can provide a relatively high efficiency. The efficiency of using direct combustion and long-burning boilers is low.
{"title":"STUDY OF THE EFFICIENCY OF SOLID FUEL BOILERS OF DIFFERENT CONFIGURATION","authors":"Yuliya Prypoten, V. Kotenko, Sergey Bashinsky, Ihor Piskun","doi":"10.31649/2311-1429-2022-1-73-78","DOIUrl":"https://doi.org/10.31649/2311-1429-2022-1-73-78","url":null,"abstract":"This paper discusses experimental studies of the operational efficiency of five boiler configurations: a direct combustion boiler with natural and mechanical draft, a long-burning boiler with natural and mechanical draft, and a pyrolysis boiler. It was found that only pyrolysis boilers can provide a relatively high efficiency. The efficiency of using direct combustion and long-burning boilers is low.","PeriodicalId":221366,"journal":{"name":"Modern technology, materials and design in construction","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124871492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-28DOI: 10.31649/2311-1429-2022-1-49-54
O. Synkovska, A. Ihnatenko
A new construction of cylindrical load-bearings support of buildings is offered, that has an alternative reinforced concrete and with using of several different ways of indirect use. Shell is introduced for the view of the new construction sieved sheet, that is created from non-exit technology using imbibitions and extrusion of the steel sheet itself.. For gaining the maximum amount of advantages and disadvantages from the introduced us reinforced concrete elements with mesh shell. The most efficient is method is a comprehensive research of introduced construction, as well as an already known researches of reinforced concrete with mesh shell. That's why, when we are calculating labor, material intensity and cost of these experimental researches. Keep in mind that this is promtly and relevant researches. In this work while planning the experiment some things were taken to consideration: best way for the construction to give the weight to reinforced concrete part and how to define the level of influence of factors like this: cyclicity, eccentricity, type of shell, thickness and diameter of shell, durability of concrete and deformation of reinforced concrete constructions. So, to get the most reliable information from these researches with minimal waste, we need to optimize parameter of load-bearing capacity and deformation and parameter of restriction-destruction. A calculation was made for optimizing the experiment about minimal amount of researches and conditions where they are done, and that is enough to salve the problem precisely.
{"title":"PLANNING OF EXPEREMENTAL RESEARCH СYLINDRICAL LOAD-BEARING SUPPORT OF BUILDINGS","authors":"O. Synkovska, A. Ihnatenko","doi":"10.31649/2311-1429-2022-1-49-54","DOIUrl":"https://doi.org/10.31649/2311-1429-2022-1-49-54","url":null,"abstract":"A new construction of cylindrical load-bearings support of buildings is offered, that has an alternative reinforced concrete and with using of several different ways of indirect use. Shell is introduced for the view of the new construction sieved sheet, that is created from non-exit technology using imbibitions and extrusion of the steel sheet itself.. \u0000For gaining the maximum amount of advantages and disadvantages from the introduced us reinforced concrete elements with mesh shell. The most efficient is method is a comprehensive research of introduced construction, as well as an already known researches of reinforced concrete with mesh shell. That's why, when we are calculating labor, material intensity and cost of these experimental researches. Keep in mind that this is promtly and relevant researches. In this work while planning the experiment some things were taken to consideration: best way for the construction to give the weight to reinforced concrete part and how to define the level of influence of factors like this: cyclicity, eccentricity, type of shell, thickness and diameter of shell, durability of concrete and deformation of reinforced concrete constructions. \u0000So, to get the most reliable information from these researches with minimal waste, we need to optimize parameter of load-bearing capacity and deformation and parameter of restriction-destruction. A calculation was made for optimizing the experiment about minimal amount of researches and conditions where they are done, and that is enough to salve the problem precisely.","PeriodicalId":221366,"journal":{"name":"Modern technology, materials and design in construction","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124413953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-28DOI: 10.31649/2311-1429-2022-1-14-20
V. Doroshenko, A. Yanchenko
The article reviews the common elements of prefabricated modular building metal structures with a list of their advantages and assessment of the prospects for the manufacture of their important components of the Lost Foam Casting (LFC) process. Such construction with the use of metal structures must have all the prerequisites to become an impetus and an effective solution in the construction industry, which will contribute to the reconstruction of the country. The fabrication of connector assemblies and bolt brackets for connecting beams and connectors with flexible steel plates for seismically unstable conditions is considered. A number of frame-cell thin-walled cast structures have been patented by the PTIMA Institute of the National Academy of Sciences of Ukraine since 2011 on the basis of patterns made of expanded polystyrene, which are assembled mainly from repeating elements, and which is similar to the modern method of mounting prefabricated building metal structures. We have also gained experience in casting with LFC parts with cast threads, which simplifies the serial production of ball joints and conical tips for tubular elements. When constructing hangars and warehouses with shell vaults, reducing the weight of metal shells with the obligatory preservation of their required strength is an important requirement for the design of such structures. For this purpose, in particular, the method of inversion of flexible hanging nets formed from a flat state by gravity is used for building structures. The article uses the fact that the inverted chain line serves as an ideal outline for arches and domes, as homogeneous arches in the form of such a line undergo only compression deformation, but not bending. The method of physical modeling of the support surface of the momentless vault shell of a complex curved surface by the method of inversion of the sagging heated thermoplastic synthetic film was developed, which turned out to be simpler than the method of inversion of hanging nets.
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