Pub Date : 2022-06-28DOI: 10.37538/0039-2383.2022.3.35.41
A. Kornilova, E. Paramonov
The article presents the results of the expected calculations of floor slabs for loads excited in operating and transient modes. Particular attention is paid to the issue of the influence of the time of starting and stopping the machine on the amplitude of vibrations of structures in transient conditions. The main purpose of the study is to determine the magnitude of the resonant increase in the oscillation amplitudes compared to oscillations in the operating mode, as well as to analyze the effect of the equipment start and stop time on the resonant amplitude.
{"title":"Influence of transient operation modes of equipment on the stress-strain state of structures","authors":"A. Kornilova, E. Paramonov","doi":"10.37538/0039-2383.2022.3.35.41","DOIUrl":"https://doi.org/10.37538/0039-2383.2022.3.35.41","url":null,"abstract":"The article presents the results of the expected calculations of floor slabs for loads excited in operating and transient modes. Particular attention is paid to the issue of the influence of the time of starting and stopping the machine on the amplitude of vibrations of structures in transient conditions. The main purpose of the study is to determine the magnitude of the resonant increase in the oscillation amplitudes compared to oscillations in the operating mode, as well as to analyze the effect of the equipment start and stop time on the resonant amplitude.","PeriodicalId":273885,"journal":{"name":"STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117129339","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: 10.37538/0039-2383.2022.3.9.13
M. Kirsanov
The problem of finding an analytical solution to the problem of deflection of a planar model of a bridge truss with two fixed hinged supports is posed. Formulas are derived for the dependence of deflection, reactions of supports and forces in characteristic rods on the number of panels in the structure. Maple computer mathematics operators are used. The deflection is sought by the Maxwell-Mohr formula. A series of individual solutions obtained for trusses with a successively increasing number of panels are generalized to an arbitrary number of panels. A picture of the distribution of forces on the truss rods is obtained. It is shown that the change of force signs in the truss chords does not depend on its geometrical parameters, but depends only on the number of panels.
{"title":"Formula for calculation of the deflection of a flat strut bridge with an arbitrary number of panels","authors":"M. Kirsanov","doi":"10.37538/0039-2383.2022.3.9.13","DOIUrl":"https://doi.org/10.37538/0039-2383.2022.3.9.13","url":null,"abstract":"The problem of finding an analytical solution to the problem of deflection of a planar model of a bridge truss with two fixed hinged supports is posed. Formulas are derived for the dependence of deflection, reactions of supports and forces in characteristic rods on the number of panels in the structure. Maple computer mathematics operators are used. The deflection is sought by the Maxwell-Mohr formula. A series of individual solutions obtained for trusses with a successively increasing number of panels are generalized to an arbitrary number of panels. A picture of the distribution of forces on the truss rods is obtained. It is shown that the change of force signs in the truss chords does not depend on its geometrical parameters, but depends only on the number of panels.","PeriodicalId":273885,"journal":{"name":"STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122222816","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 : 2022-04-25DOI: 10.37538/0039-2383.2022.5.29.32
D. N. Nizomov, A.I. Dadaboev
The article describes the features of mathematical modeling of a two-dimensional static problem of elasticity theory by the method of boundary integral equations. The resulting equations make it possible to investigate the stress-strain state of a plane problem under various external influences. As a result of applying the spline approximation of the boundary parameters, the system of integral equations is transformed into a system of linear algebraic equations with unknown displacement and stress components.
{"title":"MATHEMATICAL MODELING OF THEORY PROBLEMS ELASTICITY BY THE METHOD OF BOUNDARY EQUATIONS","authors":"D. N. Nizomov, A.I. Dadaboev","doi":"10.37538/0039-2383.2022.5.29.32","DOIUrl":"https://doi.org/10.37538/0039-2383.2022.5.29.32","url":null,"abstract":"The article describes the features of mathematical modeling of a two-dimensional static problem of elasticity theory by the method of boundary integral equations. The resulting equations make it possible to investigate the stress-strain state of a plane problem under various external influences. As a result of applying the spline approximation of the boundary parameters, the system of integral equations is transformed into a system of linear algebraic equations with unknown displacement and stress components.","PeriodicalId":273885,"journal":{"name":"STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS","volume":"856 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115082901","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 : 2022-04-25DOI: 10.37538/0039-2383.2022.5.13.19
V. Utkin, Zh.V. Kosheleva
The article discusses a new method for calculating the effective length of bored hanging piles based on the bearing capacity of a two-layer foundation soil. This calculation problem is of particular importance when it is necessary to use piles of large length and large diameter. The calculation of a hanging pile according to the bearing capacity of the foundation soil adopted in regulatory documents is based on the occurrence of friction forces on the surface of the pile because of its movement (“disruption”) in the ground environment. It does not correspond to the behavior of the pile during operation. In practice, the disruption of the pile is unacceptable, therefore, for the safe operation of the pile, the coefficients of the working conditions are entered into the calculation. A new approach to the calculation of hanging piles by bearing capacity in multilayer foundation soils based on the account of friction-adhesion forces on the surface of the pile is proposed. The friction-coupling forces are caused by micro-displacements of the surface layers of the pile material because of its general deformation from the compressive load on the pile. The effective length of the pile is understood to be such a length at which the bearing capacity of the soil on its surface and under the lower end of the pile is effectively used. Due to this length of the pile, an economic effect is achieved in pile foundations. The above method of calculating the bored pile can be used in the calculations of other piles by material, method of immersion and the number of layers of the foundation soil.
{"title":"CALCULATION OF THE EFFECTIVE LENGTH OF COMPRESSED BORED HANGING PILES BASED ON THE BEARING CAPACITY OF THE TWO-LAYER FOUNDATION SOIL.","authors":"V. Utkin, Zh.V. Kosheleva","doi":"10.37538/0039-2383.2022.5.13.19","DOIUrl":"https://doi.org/10.37538/0039-2383.2022.5.13.19","url":null,"abstract":"The article discusses a new method for calculating the effective length of bored hanging piles based on the bearing capacity of a two-layer foundation soil. This calculation problem is of particular importance when it is necessary to use piles of large length and large diameter. The calculation of a hanging pile according to the bearing capacity of the foundation soil adopted in regulatory documents is based on the occurrence of friction forces on the surface of the pile because of its movement (“disruption”) in the ground environment. It does not correspond to the behavior of the pile during operation. In practice, the disruption of the pile is unacceptable, therefore, for the safe operation of the pile, the coefficients of the working conditions are entered into the calculation. A new approach to the calculation of hanging piles by bearing capacity in multilayer foundation soils based on the account of friction-adhesion forces on the surface of the pile is proposed. The friction-coupling forces are caused by micro-displacements of the surface layers of the pile material because of its general deformation from the compressive load on the pile. The effective length of the pile is understood to be such a length at which the bearing capacity of the soil on its surface and under the lower end of the pile is effectively used. Due to this length of the pile, an economic effect is achieved in pile foundations. The above method of calculating the bored pile can be used in the calculations of other piles by material, method of immersion and the number of layers of the foundation soil.","PeriodicalId":273885,"journal":{"name":"STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132318759","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 : 2022-04-25DOI: 10.37538/0039-2383.2022.5.63.66
V. I. Obozov
Various ways of strengthening foundation slabs are analyzed in relation to cases when, after the construction of foundation slabs, as a result of project adjustments, the load on them increases. An example of the implementation of the reinforcement of the foundation plate in the case of an increase in the number of storeys of the building from 10-14 floors to 17 is given. The effectiveness of various ways of strengthening foundation slabs is investigated by the example of the regional children’s clinical hospital under construction in Tver. The methods of reinforcement of foundation slabs are conditionally divided into two groups within the framework of constructing a finite element computational model. The first group includes methods that compensate for the lack of upper stretched reinforcement of the foundation plate by sticking on the surface of problem areas of steel or carbon fiber tapes. The second group includes a method that redistributes bending forces in the foundation plate from more loaded to less loaded sections. Methods of modeling of sub-columns in the computing environment of the LIRA-CAD software complex are investigated
{"title":"SOME STRENGTHS FOUNDATION SLABS.","authors":"V. I. Obozov","doi":"10.37538/0039-2383.2022.5.63.66","DOIUrl":"https://doi.org/10.37538/0039-2383.2022.5.63.66","url":null,"abstract":"Various ways of strengthening foundation slabs are analyzed in relation to cases when, after the construction of foundation slabs, as a result of project adjustments, the load on them increases. An example of the implementation of the reinforcement of the foundation plate in the case of an increase in the number of storeys of the building from 10-14 floors to 17 is given. The effectiveness of various ways of strengthening foundation slabs is investigated by the example of the regional children’s clinical hospital under construction in Tver. The methods of reinforcement of foundation slabs are conditionally divided into two groups within the framework of constructing a finite element computational model. The first group includes methods that compensate for the lack of upper stretched reinforcement of the foundation plate by sticking on the surface of problem areas of steel or carbon fiber tapes. The second group includes a method that redistributes bending forces in the foundation plate from more loaded to less loaded sections. Methods of modeling of sub-columns in the computing environment of the LIRA-CAD software complex are investigated","PeriodicalId":273885,"journal":{"name":"STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114184710","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 : 2022-04-25DOI: 10.37538/0039-2383.2022.5.48.53
N. V. Nikonova, A. Uzdin, L. Smirnova
The influence of the field of accelerations inhomogeneity on the building site on the structure response spectrum has been consider. For this aim, we used the identity coefficient of two signals, introduced earlier by the authors this paper, and including indicators of non-synchronous, incoherence and multiscale processes. Its note, that the true values the identity coefficients of vibration points of ground base of building site it is necessary to take into account when setting the seismic excitation. In the case of structure resonant vibrations, the incoherence of the seismic input of different points is more important.
{"title":"INFLUENCE OF ACCELERATION FIELD INHOMOGENEITY ON THE RESPONSE SPECTRUM.","authors":"N. V. Nikonova, A. Uzdin, L. Smirnova","doi":"10.37538/0039-2383.2022.5.48.53","DOIUrl":"https://doi.org/10.37538/0039-2383.2022.5.48.53","url":null,"abstract":"The influence of the field of accelerations inhomogeneity on the building site on the structure response spectrum has been consider. For this aim, we used the identity coefficient of two signals, introduced earlier by the authors this paper, and including indicators of non-synchronous, incoherence and multiscale processes. Its note, that the true values the identity coefficients of vibration points of ground base of building site it is necessary to take into account when setting the seismic excitation. In the case of structure resonant vibrations, the incoherence of the seismic input of different points is more important.","PeriodicalId":273885,"journal":{"name":"STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130645936","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 : 2022-04-25DOI: 10.37538/0039-2383.2022.5.67.73
S. V. Kushnir, M. Pavlenko, I.V. Stul’eva
Technical solutions for the installation of facade structures at facilities are currently represented by a combination of various facade systems and stained glass structures. The development of projects for the arrangement of building facades is carried out on the basis of standard technical solutions. At the same time, most often, standard technical solutions are not adapted to the conditions of the construction site and the location of the facility, and the unique architectural features of the facility are not taken into account. This is the cause of defects, especially when combined with the use of translucent structures and hinged facade systems. The problem addressed in the article is the lack of an integrated scientific approach to solving the problems of designing and erecting experimental facade structures in difficult climatic conditions.
{"title":"ISSUES OF JOINT APPLICATION LIGHT-TRANSPARENT STRUCTURES AND HINGED FACADE SYSTEMS.","authors":"S. V. Kushnir, M. Pavlenko, I.V. Stul’eva","doi":"10.37538/0039-2383.2022.5.67.73","DOIUrl":"https://doi.org/10.37538/0039-2383.2022.5.67.73","url":null,"abstract":"Technical solutions for the installation of facade structures at facilities are currently represented by a combination of various facade systems and stained glass structures. The development of projects for the arrangement of building facades is carried out on the basis of standard technical solutions. At the same time, most often, standard technical solutions are not adapted to the conditions of the construction site and the location of the facility, and the unique architectural features of the facility are not taken into account. This is the cause of defects, especially when combined with the use of translucent structures and hinged facade systems. The problem addressed in the article is the lack of an integrated scientific approach to solving the problems of designing and erecting experimental facade structures in difficult climatic conditions.","PeriodicalId":273885,"journal":{"name":"STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114535356","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 : 2022-04-25DOI: 10.37538/0039-2383.2022.5.42.47
M. Kirsanov
The task is to obtain the dependence of the lower limit of the fundamental frequency of natural oscillations of a statically determinate truss on the number of spans. The upper belt of the truss is straight, the lower belt of spans is arched. The inertial properties of the truss are modeled by the same concentrated masses in the nodes. Each mass has two degrees of freedom. The forces in the rods and the reactions of the supports are found by cutting out the nodes in symbolic form from the solution of the general system of equations for the equilibrium of the truss nodes. All transformations are made in the Maple computer mathematics system. To find the structural stiffness matrix, the Maxwell – Mohr formula is used. The first natural frequency of the structure is found using the approximate Dunkerley method. The generalization of a series of individual solutions found for trusses with a different number of spans to an arbitrary number of spans is performed by induction using Maple system operators. For comparison, the lowest oscillation frequency of a system with many degrees of freedom obtained numerically is used. A formula is derived for the lower estimate of the first frequency depending on the size of the truss and the number of spans. Comparison of the analytical solution with the numerical one shows a good degree of approximation of the formula for the first frequency. It is shown that the error significantly depends on the height of the truss. Cases of kinematic variability of the structure with an even number of spans are revealed.
{"title":"ANALYTICAL EVALUATION OF THE FIRST NATURAL FREQUENCY OF A MULTI-SPAN TRUSS","authors":"M. Kirsanov","doi":"10.37538/0039-2383.2022.5.42.47","DOIUrl":"https://doi.org/10.37538/0039-2383.2022.5.42.47","url":null,"abstract":"The task is to obtain the dependence of the lower limit of the fundamental frequency of natural oscillations of a statically determinate truss on the number of spans. The upper belt of the truss is straight, the lower belt of spans is arched. The inertial properties of the truss are modeled by the same concentrated masses in the nodes. Each mass has two degrees of freedom. The forces in the rods and the reactions of the supports are found by cutting out the nodes in symbolic form from the solution of the general system of equations for the equilibrium of the truss nodes. All transformations are made in the Maple computer mathematics system. To find the structural stiffness matrix, the Maxwell – Mohr formula is used. The first natural frequency of the structure is found using the approximate Dunkerley method. The generalization of a series of individual solutions found for trusses with a different number of spans to an arbitrary number of spans is performed by induction using Maple system operators. For comparison, the lowest oscillation frequency of a system with many degrees of freedom obtained numerically is used. A formula is derived for the lower estimate of the first frequency depending on the size of the truss and the number of spans. Comparison of the analytical solution with the numerical one shows a good degree of approximation of the formula for the first frequency. It is shown that the error significantly depends on the height of the truss. Cases of kinematic variability of the structure with an even number of spans are revealed.","PeriodicalId":273885,"journal":{"name":"STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129277657","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 : 2022-04-25DOI: 10.37538/0039-2383.2022.5.20.28
A. V. Ermakova
The paper considers the numerical example of gradual transformation of the stiffness matrix of triangular finite element of deep beam with the help of stiffness matrix of its additional finite elements. Material FE (concrete) reveals from two (under compression) to four (under tension) physical nonlinear properties before collapse. Initial stiffness matrix changes due to the every one. Therefore two variants of its numerical transformation are considered. Both variants confirm the possibility of realization of the analysis of structures with several nonlinear properties at strength limit stae when the Additional Finite Element Method (AFEM) is used.
{"title":"NUMERICAL EXAMPLE OF GRADUAL TRANSFORMATION OF STIFFNESS MATRIX FOR TRIANGULAR FINITE ELEMENT OF DEEP BEAM AND ITS AFE.","authors":"A. V. Ermakova","doi":"10.37538/0039-2383.2022.5.20.28","DOIUrl":"https://doi.org/10.37538/0039-2383.2022.5.20.28","url":null,"abstract":"The paper considers the numerical example of gradual transformation of the stiffness matrix of triangular finite element of deep beam with the help of stiffness matrix of its additional finite elements. Material FE (concrete) reveals from two (under compression) to four (under tension) physical nonlinear properties before collapse. Initial stiffness matrix changes due to the every one. Therefore two variants of its numerical transformation are considered. Both variants confirm the possibility of realization of the analysis of structures with several nonlinear properties at strength limit stae when the Additional Finite Element Method (AFEM) is used.","PeriodicalId":273885,"journal":{"name":"STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124911773","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 : 2022-04-25DOI: 10.37538/0039-2383.2022.5.33.41
Z.R. Z.R. Galyautdinov, O. Kumpyak, D. Galyautdinov, E. Shipilova
Protective structures of civil defense are designed from the condition of perception of short-term dynamic loads. In this case, the supporting structures can be deformed in the plastic stage. To reduce the forces and displacements of the bearing elements under intense dynamic loading, the active methods of protecting structures are used. The flexible supports in the form of collapsible inserts of annular section is one of such methods. The paper considers the change in displacements and forces of the elastic-plastic reinforced concrete beams, depending on the compliance of support fastenings. Based on the theoretical studies, an algorithm for the dynamic calculation of reinforced concrete beams with cracks was developed, with which the calculation of structures was performed under various conditions of deformation of yielding supports. The calculations showed that the use of yielding supports deformed only in the elastic stage can have both a positive and a negative effect on the operation of structures. In this case, there may be the areas of ωθ values in which there is an increase in the dynamic coefficient of the structure on yielding supports relative to the beams on non-displaceable supports. The greatest efficiency of using the yielding supports is achieved when they work at the plastic stage without transition to the hardening stage.
{"title":"DYNAMIC CALCULATION OF REINFORCED CONCRETE BEAMS ON YIELDING SUPPORT BEYOND THE LIMITS OF ELASTICITY","authors":"Z.R. Z.R. Galyautdinov, O. Kumpyak, D. Galyautdinov, E. Shipilova","doi":"10.37538/0039-2383.2022.5.33.41","DOIUrl":"https://doi.org/10.37538/0039-2383.2022.5.33.41","url":null,"abstract":"Protective structures of civil defense are designed from the condition of perception of short-term dynamic loads. In this case, the supporting structures can be deformed in the plastic stage. To reduce the forces and displacements of the bearing elements under intense dynamic loading, the active methods of protecting structures are used. The flexible supports in the form of collapsible inserts of annular section is one of such methods. The paper considers the change in displacements and forces of the elastic-plastic reinforced concrete beams, depending on the compliance of support fastenings. Based on the theoretical studies, an algorithm for the dynamic calculation of reinforced concrete beams with cracks was developed, with which the calculation of structures was performed under various conditions of deformation of yielding supports. The calculations showed that the use of yielding supports deformed only in the elastic stage can have both a positive and a negative effect on the operation of structures. In this case, there may be the areas of ωθ values in which there is an increase in the dynamic coefficient of the structure on yielding supports relative to the beams on non-displaceable supports. The greatest efficiency of using the yielding supports is achieved when they work at the plastic stage without transition to the hardening stage.","PeriodicalId":273885,"journal":{"name":"STRUCTURAL MECHANICS AND ANALYSIS OF CONSTRUCTIONS","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123910330","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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