Restoration of Load-Bearing Structures of Buildings after Accidents

The issues of protecting buildings from special, usually non-design, impacts, including progressive collapse as a result of emergency impacts, are the subject of many scientific works and regulatory documents have been developed regulating calculation and design provisions for application at the des...

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Main Author: O. A. Simakov
Format: Article
Language:English
Published: Moscow State University of Civil Engineering (MGSU) 2024-09-01
Series:Железобетонные конструкции
Subjects:
Online Access:https://www.g-b-k.ru/jour/article/view/57
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author O. A. Simakov
author_facet O. A. Simakov
author_sort O. A. Simakov
collection DOAJ
description The issues of protecting buildings from special, usually non-design, impacts, including progressive collapse as a result of emergency impacts, are the subject of many scientific works and regulatory documents have been developed regulating calculation and design provisions for application at the design stage. At the same time, the issues of strengthening existing buildings and structures at the stages of major repairs, reconstruction (if measures, for example, for protection against progressive collapse were not envisaged at the design stage, then bringing the structures to the requirements of the standards is a complex, often impossible task), as well as restoration of load-bearing structures after emergency situations remain open. In accordance with the current regulatory documents, the calculation for a special limit state is carried out with reduced coefficients for loads and taking into account the dynamic hardening for the design resistance of materials. After an emergency impact, it is necessary to perform a calculation for limit states taking into account all reliability factors, which usually leads to a deficit in the bearing capacity of a significant number of load-bearing structures taking into account the damage to individual structures and the redistribution of forces to others that are not damaged. It is for this operational stage after the special impacts considered in this article that there are no special requirements and assumptions in the operation of the building’s load-bearing structures.
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publisher Moscow State University of Civil Engineering (MGSU)
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spelling doaj-art-b1a6c4a4153d4b8b85a0e06f511b99d52025-02-06T07:09:54ZengMoscow State University of Civil Engineering (MGSU)Железобетонные конструкции2949-16222949-16142024-09-0173344310.22227/2949-1622.2024.3.34-4352Restoration of Load-Bearing Structures of Buildings after AccidentsO. A. Simakov0Moscow State University of Civil Engineering (National Research University) (MGSU)The issues of protecting buildings from special, usually non-design, impacts, including progressive collapse as a result of emergency impacts, are the subject of many scientific works and regulatory documents have been developed regulating calculation and design provisions for application at the design stage. At the same time, the issues of strengthening existing buildings and structures at the stages of major repairs, reconstruction (if measures, for example, for protection against progressive collapse were not envisaged at the design stage, then bringing the structures to the requirements of the standards is a complex, often impossible task), as well as restoration of load-bearing structures after emergency situations remain open. In accordance with the current regulatory documents, the calculation for a special limit state is carried out with reduced coefficients for loads and taking into account the dynamic hardening for the design resistance of materials. After an emergency impact, it is necessary to perform a calculation for limit states taking into account all reliability factors, which usually leads to a deficit in the bearing capacity of a significant number of load-bearing structures taking into account the damage to individual structures and the redistribution of forces to others that are not damaged. It is for this operational stage after the special impacts considered in this article that there are no special requirements and assumptions in the operation of the building’s load-bearing structures.https://www.g-b-k.ru/jour/article/view/57restorationstrengtheningspecial limit statesaccident
spellingShingle O. A. Simakov
Restoration of Load-Bearing Structures of Buildings after Accidents
Железобетонные конструкции
restoration
strengthening
special limit states
accident
title Restoration of Load-Bearing Structures of Buildings after Accidents
title_full Restoration of Load-Bearing Structures of Buildings after Accidents
title_fullStr Restoration of Load-Bearing Structures of Buildings after Accidents
title_full_unstemmed Restoration of Load-Bearing Structures of Buildings after Accidents
title_short Restoration of Load-Bearing Structures of Buildings after Accidents
title_sort restoration of load bearing structures of buildings after accidents
topic restoration
strengthening
special limit states
accident
url https://www.g-b-k.ru/jour/article/view/57
work_keys_str_mv AT oasimakov restorationofloadbearingstructuresofbuildingsafteraccidents