Pub Date : 2023-07-01DOI: 10.31650/2707-3068-2023-27-19-27
A. Makhinko, N. Makhinko
The article is devoted to the peculiarities of determination of seismic loads on steel silos with a flat bottom according to newly introduced DBN B.2.6-221:2021, harmonized with the global system of European codification Eurocode. The main focus is on the general methods of specifying seismic action and the principles of schematizing seismic action for analysis silos. The parameters of the acceleration spectra of the horizontal and vertical components of seismic load and their influence on formation of silos reaction in these directions are analyzed. The recommendations are given for accurate evaluations the inertia-stiff characteristics of silos with a flat bottom in height based on the analysis of their design features and physical and mechanical characteristics of the particulate material
{"title":"THE FEATURES OF DETERMINATION OF SEISMIC LOADS ON STEEL SILOS WITH A FLAT BOTTOM ACCORDING TO DBN V.2.6-221:2021","authors":"A. Makhinko, N. Makhinko","doi":"10.31650/2707-3068-2023-27-19-27","DOIUrl":"https://doi.org/10.31650/2707-3068-2023-27-19-27","url":null,"abstract":"The article is devoted to the peculiarities of determination of seismic loads on steel silos with a flat bottom according to newly introduced DBN B.2.6-221:2021, harmonized with the global system of European codification Eurocode. The main focus is on the general methods of specifying seismic action and the principles of schematizing seismic action for analysis silos. The parameters of the acceleration spectra of the horizontal and vertical components of seismic load and their influence on formation of silos reaction in these directions are analyzed. The recommendations are given for accurate evaluations the inertia-stiff characteristics of silos with a flat bottom in height based on the analysis of their design features and physical and mechanical characteristics of the particulate material","PeriodicalId":365885,"journal":{"name":"Modern structures of metal and wood","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116269397","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 : 2023-07-01DOI: 10.31650/2707-3068-2023-27-75-83
S. Homon, S. Gomon
Elements and structures made of wood have repeatedly proven their advantages over analogues made of metal and reinforced concrete. At the same time, materials, parts, elements and structures made of wood need additional experimental and theoretical studies to establish the actual mechanical characteristics of the material. That is, analysis with subsequent modeling of the work of wood as a material from the beginning of loading to its complete destruction. Most of the experimental studies of solid wood were carried out in the so-called "soft" test mode, that is, the work of such material was analyzed only up to a certain point of the ascending branch of the "σ-u" diagram (according to the increase in loads), which did not allow us to accurately study the strength and deformable characteristics on top of this chart, not to mention its descending branch. Since the end of the last century, scientists from different countries began to conduct experimental studies of materials in the so-called "hard mode" (increasing displacements) on modern servo-hydraulic and electromechanical testing machines, which made it possible to build diagrams from the beginning of loading to the complete destruction of the material. The purpose of the work is to develop a theoretical model for the operation of hardwood and coniferous wood under axial compression along the fibers with a short-term load from the beginning of loading to the complete destruction of the material, regardless of the age of the wood and humidity. A generalized model of the actual work of hardwood and coniferous wood under axial compression along the fibers by a short-term load is proposed. Four characteristic areas of wood work were established (two on the ascending branch and two on the descending one). A theoretical definition of the main strength and deformation parameters of the complete wood deformation diagram is proposed. An approximating function has been established - this is a polynomial of the 4th degree, which sufficiently describes the deformation diagram. Methods for determining the critical and limiting deformations of wood, the initial modulus of elasticity and the modulus of deformations are proposed
{"title":"GENERALIZED MODEL OF THE ACTUAL WORK OF DECIDOUS AND CONIFEROUS WOOD UNDER AXIAL COMPRESSION ALONG THE FIBERS","authors":"S. Homon, S. Gomon","doi":"10.31650/2707-3068-2023-27-75-83","DOIUrl":"https://doi.org/10.31650/2707-3068-2023-27-75-83","url":null,"abstract":"Elements and structures made of wood have repeatedly proven their advantages over analogues made of metal and reinforced concrete. At the same time, materials, parts, elements and structures made of wood need additional experimental and theoretical studies to establish the actual mechanical characteristics of the material. That is, analysis with subsequent modeling of the work of wood as a material from the beginning of loading to its complete destruction. Most of the experimental studies of solid wood were carried out in the so-called \"soft\" test mode, that is, the work of such material was analyzed only up to a certain point of the ascending branch of the \"σ-u\" diagram (according to the increase in loads), which did not allow us to accurately study the strength and deformable characteristics on top of this chart, not to mention its descending branch. Since the end of the last century, scientists from different countries began to conduct experimental studies of materials in the so-called \"hard mode\" (increasing displacements) on modern servo-hydraulic and electromechanical testing machines, which made it possible to build diagrams from the beginning of loading to the complete destruction of the material. The purpose of the work is to develop a theoretical model for the operation of hardwood and coniferous wood under axial compression along the fibers with a short-term load from the beginning of loading to the complete destruction of the material, regardless of the age of the wood and humidity. A generalized model of the actual work of hardwood and coniferous wood under axial compression along the fibers by a short-term load is proposed. Four characteristic areas of wood work were established (two on the ascending branch and two on the descending one). A theoretical definition of the main strength and deformation parameters of the complete wood deformation diagram is proposed. An approximating function has been established - this is a polynomial of the 4th degree, which sufficiently describes the deformation diagram. Methods for determining the critical and limiting deformations of wood, the initial modulus of elasticity and the modulus of deformations are proposed","PeriodicalId":365885,"journal":{"name":"Modern structures of metal and wood","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124718114","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 : 2022-07-01DOI: 10.31650/2707-3068-2022-26-88-96
P. Gomon, M. Polishchuk
The dynamic development and distribution of glued timber structures in construction predetermine their comprehensive study. The issue of increasing the load capacity of such structures using reinforcement is also relevant. The reinforcing of timber elements using steel reinforcement is more researched, but recent studies have shown good use of synthetic fiber-based composites as reinforcement for timber structures
{"title":"DEFLECTIONS OF REINFORCED AND NON-REINFORCED BEAMS OF RECTANGULAR SECTION OF GLUED WOOD","authors":"P. Gomon, M. Polishchuk","doi":"10.31650/2707-3068-2022-26-88-96","DOIUrl":"https://doi.org/10.31650/2707-3068-2022-26-88-96","url":null,"abstract":"The dynamic development and distribution of glued timber structures in construction predetermine their comprehensive study. The issue of increasing the load capacity of such structures using reinforcement is also relevant. The reinforcing of timber elements using steel reinforcement is more researched, but recent studies have shown good use of synthetic fiber-based composites as reinforcement for timber structures","PeriodicalId":365885,"journal":{"name":"Modern structures of metal and wood","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115388354","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 : 2022-07-01DOI: 10.31650/2707-3068-2022-26-15-24
N. Buljan, A. Bjelanović, H. Turkulin
This paper presents the results of research conducted within R&D project. The primary goal was to apply the current state of the art technology in aluminium to a timber-based frames, but also to improve the energy performance of the building envelope and create environmentally friendly product, which physical, structural and aesthetic performances are equal to or even better than equivalent aluminium systems.
{"title":"TIMBER CURTAIN WALL – INNOVATIVE STRUCTURALLY GLAZED UNITISED SYSTEM FOR BUILDING ENVELOPES","authors":"N. Buljan, A. Bjelanović, H. Turkulin","doi":"10.31650/2707-3068-2022-26-15-24","DOIUrl":"https://doi.org/10.31650/2707-3068-2022-26-15-24","url":null,"abstract":"This paper presents the results of research conducted within R&D project. The primary goal was to apply the current state of the art technology in aluminium to a timber-based frames, but also to improve the energy performance of the building envelope and create environmentally friendly product, which physical, structural and aesthetic performances are equal to or even better than equivalent aluminium systems.","PeriodicalId":365885,"journal":{"name":"Modern structures of metal and wood","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122187024","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 : 2022-07-01DOI: 10.31650/2707-3068-2022-26-5-14
A. Bjelanović, I. Štimac Grandić, F. Franolić
Paper presents results of the analysis of possible design solutions of timber beam bridges considering all usual demands for their stability, safety and functionality when they are designed to serve pedestrian and cyclist traffic, and, if necessary, traffic of emergency and service vehicles as well. Parametric finite element models (FEM) of bridges with simply supported glulam main-beams, have been divided into four groups, each consisting of several subgroups.
{"title":"TIMBER FOOTBRIDGES – VALORIZATION OF PARAMETRIC ANALYSIS IN OPTIMIZATION OF LAYOUT OF BEAM BRIDGES","authors":"A. Bjelanović, I. Štimac Grandić, F. Franolić","doi":"10.31650/2707-3068-2022-26-5-14","DOIUrl":"https://doi.org/10.31650/2707-3068-2022-26-5-14","url":null,"abstract":"Paper presents results of the analysis of possible design solutions of timber beam bridges considering all usual demands for their stability, safety and functionality when they are designed to serve pedestrian and cyclist traffic, and, if necessary, traffic of emergency and service vehicles as well. Parametric finite element models (FEM) of bridges with simply supported glulam main-beams, have been divided into four groups, each consisting of several subgroups.","PeriodicalId":365885,"journal":{"name":"Modern structures of metal and wood","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127407609","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 : 2022-07-01DOI: 10.31650/2707-3068-2022-26-63-71
Y. Kupchenko, P. Singayevsky, О.М. Korshak
In the industrial buildings with the support of trussed rafters on the columns at the level of the bottom chord, the main system of horizontal nodes, which the horizontal load rests and provides the rigidity of the building, is located on the bottom chords of trussed rafters. These nodes are usually constructed in the form of trusses (so-called wind trusses).
{"title":"THE RATIONAL SCHEME DEFINITION OF THE CROSSTRUSSWEB ALONG THE BOTTOM CHORD OF INDUSTRIAL BUILDINGTRUSSES","authors":"Y. Kupchenko, P. Singayevsky, О.М. Korshak","doi":"10.31650/2707-3068-2022-26-63-71","DOIUrl":"https://doi.org/10.31650/2707-3068-2022-26-63-71","url":null,"abstract":"In the industrial buildings with the support of trussed rafters on the columns at the level of the bottom chord, the main system of horizontal nodes, which the horizontal load rests and provides the rigidity of the building, is located on the bottom chords of trussed rafters. These nodes are usually constructed in the form of trusses (so-called wind trusses).","PeriodicalId":365885,"journal":{"name":"Modern structures of metal and wood","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131672287","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 : 2022-07-01DOI: 10.31650/2707-3068-2022-26-128-134
A. Onyshchenko, O. Gibalenko, V. Gibalenko
This work includes the results of studies about the state of the secondary protection against corrosion to ensure the building metal structures’ durability. The task of preserving the qualitative and quantitative indicators under the influence of the aggressive atmosphere in industrial enterprises is being solved.
{"title":"EVALUATION THE CORROSION PROTECTION OF STRUCTURES BY ACTUAL CONDITION","authors":"A. Onyshchenko, O. Gibalenko, V. Gibalenko","doi":"10.31650/2707-3068-2022-26-128-134","DOIUrl":"https://doi.org/10.31650/2707-3068-2022-26-128-134","url":null,"abstract":"This work includes the results of studies about the state of the secondary protection against corrosion to ensure the building metal structures’ durability. The task of preserving the qualitative and quantitative indicators under the influence of the aggressive atmosphere in industrial enterprises is being solved.","PeriodicalId":365885,"journal":{"name":"Modern structures of metal and wood","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127583022","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 : 2022-07-01DOI: 10.31650/2707-3068-2022-26-115-127
Y. Klymenko, E.V. Maksiuta
Based on the field studies and determination of the parameters of the stress-strain state, as well as the nature of the operation of reinforced concrete I-beam columns damaged during operation and during hostilities, a general method for determining the residual bearing capacity of elements was created.
{"title":"STEEL CLAMP AS EXPRESS METHOD OF REINFORCEMENT OF REINFORCED CONCRETE DAMAGED COLUMNS","authors":"Y. Klymenko, E.V. Maksiuta","doi":"10.31650/2707-3068-2022-26-115-127","DOIUrl":"https://doi.org/10.31650/2707-3068-2022-26-115-127","url":null,"abstract":"Based on the field studies and determination of the parameters of the stress-strain state, as well as the nature of the operation of reinforced concrete I-beam columns damaged during operation and during hostilities, a general method for determining the residual bearing capacity of elements was created.","PeriodicalId":365885,"journal":{"name":"Modern structures of metal and wood","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121805586","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 : 2022-07-01DOI: 10.31650/2707-3068-2022-26-55-62
P. Krolo
The paper demonstrates the applications of the hysteresis envelope model on the example of a double extended end plate beam-to-column bolted joint. The hysteresis envelope model represents a new analytical trilinear model that can describe the cyclic behaviour of joints in a moment-resisting steel frame and is suitable for nonlinear static pushover analysis.
{"title":"APPLICATION OF HYSTERESIS ENVELOPE MODEL TO STEEL BEAM-TO-COLUMN BOLTED JOINT","authors":"P. Krolo","doi":"10.31650/2707-3068-2022-26-55-62","DOIUrl":"https://doi.org/10.31650/2707-3068-2022-26-55-62","url":null,"abstract":"The paper demonstrates the applications of the hysteresis envelope model on the example of a double extended end plate beam-to-column bolted joint. The hysteresis envelope model represents a new analytical trilinear model that can describe the cyclic behaviour of joints in a moment-resisting steel frame and is suitable for nonlinear static pushover analysis.","PeriodicalId":365885,"journal":{"name":"Modern structures of metal and wood","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117039629","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 : 2022-07-01DOI: 10.31650/2707-3068-2022-26-155-163
A. Yanin, S. Novikova
The article presents the results of optimization of the beams step of the building wooden floor according to the criterion of the minimum material consumption. The slab consists of parallel wooden beams of rectangular cross-section, on which the boardwalk is laid.
{"title":"DETERMINATION OF THE OPTIMAL BEAMS STEP FOR THE WOOD FLOOR","authors":"A. Yanin, S. Novikova","doi":"10.31650/2707-3068-2022-26-155-163","DOIUrl":"https://doi.org/10.31650/2707-3068-2022-26-155-163","url":null,"abstract":"The article presents the results of optimization of the beams step of the building wooden floor according to the criterion of the minimum material consumption. The slab consists of parallel wooden beams of rectangular cross-section, on which the boardwalk is laid.","PeriodicalId":365885,"journal":{"name":"Modern structures of metal and wood","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133020840","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}
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