Restoration of load-bearing structures in a multi-storey residential building after a fire caused by military operations

• Autorzy: Kramarchuk Andrii , Ilnytskyy Borys , Lytvyniak Oksana

Identyfikatory

DOI

10.35784/bud-arch.6210

Warianty tytułu

PL

Renowacja konstrukcji nośnych w wielokondygnacyjnym budynku mieszkalnym po pożarze spowodowanym działaniami wojennymi

• Języki publikacji: EN

Abstrakty

EN

This article presents the visual and instrumental investigations, along with the necessary engineering and technical decisions, for restoring load-bearing structures of multi-storey residential buildings damaged by fire due to war. It is economically advisable to replace and strengthen 20% of the emergency floor slabs and 16% of the load-bearing walls to allow residents to return to their homes as soon as possible. The temperature during the fire was determined using specific samples of damaged materials, building structures, and equipment, which allowed for a more accurate assessment of the damage to brick walls and prefabricated reinforced concrete floor slabs. The possibility of further use of the building was also determined based on a survey and necessary measurements of its structures, including the determination of physical and mechanical characteristics (crack width, flexures, concrete strength, brick grade, and mortar grade). The prefabricated reinforced concrete round hollow floor slabs had delaminated along the ribs between the hollows, showing sagging. The bricks had changed colour and were destroyed to a depth of 120 mm (internal walls were destroyed to this depth on both sides). Considering the extent of the damage to the load-bearing structures, it is recommended that the inter-floor ceilings, load-bearing walls, and partitions be replaced and strengthened. For structures that do not require replacement or reinforcement, the justification for their continued safe operation has been completed in accordance with the construction standards and regulations in force in Ukraine.

PL

W artykule przedstawiono badania wizualne i instrumentalne oraz niezbędne decyzje inżynieryjno-techniczne dotyczące renowacji konstrukcji nośnych wielokondygnacyjnych budynków mieszkalnych uszkodzonych w wyniku pożaru spowodowanego działaniami wojennymi. Ekonomicznie uzasadnione jest zastąpienie i wzmocnienie 20% awaryjnych płyt stropowych oraz 16% ścian nośnych, aby umożliwić jak najszybszy powrót mieszkańców do domów. Temperaturę podczas pożaru określono za pomocą próbek uszkodzonych materiałów, elementów budowlanych oraz wyposażenia, co pozwoliło na dokładniejszą ocenę zniszczeń ścian ceglanych i prefabrykowanych żelbetowych płyt stropowych. Możliwość dalszego użytkowania budynku została określona na podstawie badań i niezbędnych pomiarów jego konstrukcji, w tym wyznaczenia właściwości fizycznych i mechanicznych (szerokość pęknięć, ugięcia, wytrzymałość betonu, klasa cegły i klasa zaprawy). Prefabrykowane żelbetowe okrągłe płyty stropowe wykazywały rozwarstwienia wzdłuż żeber między pustkami i były wygięte. Cegły zmieniły kolor i zostały zniszczone na głębokość 120 mm (wewnętrzne ściany były zniszczone na tę głębokość z obu stron). Biorąc pod uwagę stopień zniszczenia konstrukcji nośnych, zaleca się wymianę i wzmocnienie stropów międzykondygnacyjnych, ścian nośnych i przegród. W przypadku konstrukcji, które nie wymagają wymiany ani wzmocnienia, uzasadniono możliwość ich dalszej bezpiecznej eksploatacji zgodnie z obowiązującymi normami budowlanymi i przepisami w Ukrainie.

Słowa kluczowe

EN

multi-storey residential building; prefabricated reinforced concrete floor slabs; cracks; fire loading; fire

PL

wielokondygnacyjny budynek mieszkalny; prefabrykowane żelbetowe płyty stropowe; pęknięcia; obciążenia pożarowe; pożar

• Wydawca: Wydawnictwo Politechniki Lubelskiej
• Czasopismo: Budownictwo i Architektura
• Rocznik: 2024
• Tom: Vol. 23, no. 3
• Strony: 43--53
• Opis fizyczny: Bibliogr. 30 poz., fig.

Twórcy

autor

Kramarchuk Andrii

• Department of Building Constructions and Bridges; Institute of Civil Engineering and Building System; Lviv Polytechnic National University

autor

Ilnytskyy Borys

• Department of Building Constructions and Bridges; Institute of Civil Engineering and Building System; Lviv Polytechnic National University

autor

Lytvyniak Oksana

• Department of Building Constructions and Bridges; Institute of Civil Engineering and Building System; Lviv Polytechnic National University

• https://orcid.org/0000-0002-9595-3685

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).