A deformed state of the composite frame with phased installation

Experimental studies have been carried out to investigate the features of a composite flat frame deformation that arise in the process of its gradual installation and loading. During the first stage only precast elements (columns and beam precast parts) are assembled, which are further loaded with...

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Autores principales:	Koyankin Alexander, Mitasov Valery
Formato:	article
Lenguaje:	EN
Publicado:	Peter the Great St. Petersburg Polytechnic University 2021
Materias:	reinforced concrete compressive strength cracks tensile strength experimental investigations prefabricated-monolithic structures Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/3501da1b95f141afb87f87aa99c86e4e
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id	oai:doaj.org-article:3501da1b95f141afb87f87aa99c86e4e
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spelling	oai:doaj.org-article:3501da1b95f141afb87f87aa99c86e4e2021-11-12T15:54:04ZA deformed state of the composite frame with phased installation2712-817210.34910/MCE.105.12https://doaj.org/article/3501da1b95f141afb87f87aa99c86e4e2021-09-01T00:00:00Zhttp://engstroy.spbstu.ru/article/2021.105.12/https://doaj.org/toc/2712-8172Experimental studies have been carried out to investigate the features of a composite flat frame deformation that arise in the process of its gradual installation and loading. During the first stage only precast elements (columns and beam precast parts) are assembled, which are further loaded with some weight that simulates its own weight in a real structure, the weight of other precast elements and that of monolithic concrete. Thus, at the first stage of existence the load is perceived only by the precast elements of the flat frame. Subsequently, at the second stage, without removing the previously applied load, the monolithic concrete is laid, which, having gained the required strength is included in the deformation process, taking an additional applied load that simulates the weight of floor structures, partitions, curtain walls and operational load. The motivations for conducting experimental research were as follows: the carcass of a composite building (is simulated by a flat double two-story frame in the experiment) in real conditions is built in stages, which is expressed in serial installation of individual components. These design features lead not only to the inclusion of separate parts of composite elements in the deformation process at different times, but also to a significant change in the design scheme as a whole (the formation of continuous beams and floor slabs, an appearance of a rigid junction of beams with columns, an increase in the degree of static indefinability of the system, and so on). Experimental studies of the stress-strain state of composite flat frames were performed, taking into account the phased installation process and changes in the design scheme. Precast parts of experi-mental flat frames (columns, beam precast parts) are made of heavy concrete, and monolithic beam parts – of light concrete (expanded- clay concrete). The conducted research allows us to state that the phased installation and involvement in the deformation process of both individual elements of the composite carcass and the constituent parts of the elements significantly change the picture of the carcass deformation.Koyankin AlexanderMitasov ValeryPeter the Great St. Petersburg Polytechnic Universityarticlereinforced concretecompressive strengthcrackstensile strengthexperimental investigationsprefabricated-monolithic structuresEngineering (General). Civil engineering (General)TA1-2040ENMagazine of Civil Engineering, Vol None, Iss 05 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	reinforced concrete compressive strength cracks tensile strength experimental investigations prefabricated-monolithic structures Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	reinforced concrete compressive strength cracks tensile strength experimental investigations prefabricated-monolithic structures Engineering (General). Civil engineering (General) TA1-2040 Koyankin Alexander Mitasov Valery A deformed state of the composite frame with phased installation
description	Experimental studies have been carried out to investigate the features of a composite flat frame deformation that arise in the process of its gradual installation and loading. During the first stage only precast elements (columns and beam precast parts) are assembled, which are further loaded with some weight that simulates its own weight in a real structure, the weight of other precast elements and that of monolithic concrete. Thus, at the first stage of existence the load is perceived only by the precast elements of the flat frame. Subsequently, at the second stage, without removing the previously applied load, the monolithic concrete is laid, which, having gained the required strength is included in the deformation process, taking an additional applied load that simulates the weight of floor structures, partitions, curtain walls and operational load. The motivations for conducting experimental research were as follows: the carcass of a composite building (is simulated by a flat double two-story frame in the experiment) in real conditions is built in stages, which is expressed in serial installation of individual components. These design features lead not only to the inclusion of separate parts of composite elements in the deformation process at different times, but also to a significant change in the design scheme as a whole (the formation of continuous beams and floor slabs, an appearance of a rigid junction of beams with columns, an increase in the degree of static indefinability of the system, and so on). Experimental studies of the stress-strain state of composite flat frames were performed, taking into account the phased installation process and changes in the design scheme. Precast parts of experi-mental flat frames (columns, beam precast parts) are made of heavy concrete, and monolithic beam parts – of light concrete (expanded- clay concrete). The conducted research allows us to state that the phased installation and involvement in the deformation process of both individual elements of the composite carcass and the constituent parts of the elements significantly change the picture of the carcass deformation.
format	article
author	Koyankin Alexander Mitasov Valery
author_facet	Koyankin Alexander Mitasov Valery
author_sort	Koyankin Alexander
title	A deformed state of the composite frame with phased installation
title_short	A deformed state of the composite frame with phased installation
title_full	A deformed state of the composite frame with phased installation
title_fullStr	A deformed state of the composite frame with phased installation
title_full_unstemmed	A deformed state of the composite frame with phased installation
title_sort	deformed state of the composite frame with phased installation
publisher	Peter the Great St. Petersburg Polytechnic University
publishDate	2021
url	https://doaj.org/article/3501da1b95f141afb87f87aa99c86e4e
work_keys_str_mv	AT koyankinalexander adeformedstateofthecompositeframewithphasedinstallation AT mitasovvalery adeformedstateofthecompositeframewithphasedinstallation AT koyankinalexander deformedstateofthecompositeframewithphasedinstallation AT mitasovvalery deformedstateofthecompositeframewithphasedinstallation
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A deformed state of the composite frame with phased installation

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