Repair of local damages to precast prestressed slab elements at a parking garage

The durability of precast structures often depends on quality of execution of the connections between the structural elements. Essential also is their design and proper exploitation. This paper focuses on the magnitude of damages as well as repair methods used for a precast slab, which consists of p...

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Autores principales:	Lutomirska Marta, Lutomirski Tomasz, Sakowski Artur
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/4c99a5f6fbd64996a546531eed75f5df
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spelling	oai:doaj.org-article:4c99a5f6fbd64996a546531eed75f5df2021-12-02T17:13:46ZRepair of local damages to precast prestressed slab elements at a parking garage2261-236X10.1051/matecconf/202134904013https://doaj.org/article/4c99a5f6fbd64996a546531eed75f5df2021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/18/matecconf_iceaf2021_04013.pdfhttps://doaj.org/toc/2261-236XThe durability of precast structures often depends on quality of execution of the connections between the structural elements. Essential also is their design and proper exploitation. This paper focuses on the magnitude of damages as well as repair methods used for a precast slab, which consists of prestressed double T slab elements supported on prestressed inverted T girders. It was found that during execution, the girders were forced to fit dowel bars, which resulted in their initial deformation. Moreover, those connection zones were subjected to unpredicted loading coming from delivery trucks. It resulted in crushing of the elastomeric bearings, uncontrolled rotation of double T precast elements, and further deformation of dowel bars. Numerous cracks, splits, concrete spalling, surface rust stains, and efflorescence were observed. To prevent failure, a project for repair was developed. The slab was lifted with the use of a jacks to provide necessary space for work. Damaged dowel bars and elastomeric bearings were removed. The concrete surface of double T beams and the inverted T girder was cleaned, refilled, prepared, and strengthened with FRP wraps. Additionally, steel angles were used to protect the edges of the inverted T girder.Lutomirska MartaLutomirski TomaszSakowski ArturEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 349, p 04013 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Lutomirska Marta Lutomirski Tomasz Sakowski Artur Repair of local damages to precast prestressed slab elements at a parking garage
description	The durability of precast structures often depends on quality of execution of the connections between the structural elements. Essential also is their design and proper exploitation. This paper focuses on the magnitude of damages as well as repair methods used for a precast slab, which consists of prestressed double T slab elements supported on prestressed inverted T girders. It was found that during execution, the girders were forced to fit dowel bars, which resulted in their initial deformation. Moreover, those connection zones were subjected to unpredicted loading coming from delivery trucks. It resulted in crushing of the elastomeric bearings, uncontrolled rotation of double T precast elements, and further deformation of dowel bars. Numerous cracks, splits, concrete spalling, surface rust stains, and efflorescence were observed. To prevent failure, a project for repair was developed. The slab was lifted with the use of a jacks to provide necessary space for work. Damaged dowel bars and elastomeric bearings were removed. The concrete surface of double T beams and the inverted T girder was cleaned, refilled, prepared, and strengthened with FRP wraps. Additionally, steel angles were used to protect the edges of the inverted T girder.
format	article
author	Lutomirska Marta Lutomirski Tomasz Sakowski Artur
author_facet	Lutomirska Marta Lutomirski Tomasz Sakowski Artur
author_sort	Lutomirska Marta
title	Repair of local damages to precast prestressed slab elements at a parking garage
title_short	Repair of local damages to precast prestressed slab elements at a parking garage
title_full	Repair of local damages to precast prestressed slab elements at a parking garage
title_fullStr	Repair of local damages to precast prestressed slab elements at a parking garage
title_full_unstemmed	Repair of local damages to precast prestressed slab elements at a parking garage
title_sort	repair of local damages to precast prestressed slab elements at a parking garage
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/4c99a5f6fbd64996a546531eed75f5df
work_keys_str_mv	AT lutomirskamarta repairoflocaldamagestoprecastprestressedslabelementsataparkinggarage AT lutomirskitomasz repairoflocaldamagestoprecastprestressedslabelementsataparkinggarage AT sakowskiartur repairoflocaldamagestoprecastprestressedslabelementsataparkinggarage
_version_	1718381316729208832

Repair of local damages to precast prestressed slab elements at a parking garage

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