Behavior of thermally restrained RC beams in case of fire

Albuquerque, Gabriela L.; Silva, Augusto B.; Rodrigues, João Paulo C.; Silva, Valdir P.

doi:10.1016/j.engstruct.2018.07.075

Cited by 37 publications

(17 citation statements)

References 10 publications

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“…First, researchers from Coimbra University in Portugal have achieved impressive results on RC beams in fire. In study [17], the behavior of thermally restrained RC beams was explored through experimental testing. The authors tested several end restraints (axial, rotational, and combination thereof), the introduction of which always led to the increase in a critical time in terms of deformation criteria.…”

Section: Literature Reviewmentioning

confidence: 99%

Enhancing fire resistance of reinforced concrete beams through sacrificial reinforcement

Hostetter

Naser

Hawileh

et al. 2022

Archit. Struct. Constr.

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Due to the superior properties of concrete, structural members made of concrete often satisfy fire requirements specified in codes and standards without special installations or the use of external insulation. A closer examination into fire codal provisions shows that they are primarily founded for new constructions or that which does not suffer from aging or in-service trauma; such as cracking, reinforcement corrosion, creep, etc., all of which can adversely affect the structural response of concrete structures, especially under fire conditions. In order to enhance the fire resistance of concrete structures, this paper presents insights into simple and cost-effective solutions by utilizing sacrificial layer(s) of reinforcement. These solutions capitalize on the natural synergy between reinforcement and concrete and have the potential to mitigate fire-induced cracking and the development of fire-induced large deformation, thereby extending the fire resistance of reinforced concrete beams. The validity and applicability of the proposed concepts are highlighted through a highly complex three-dimensional thermomechanical nonlinear-based finite element model. This model was utilized in a series of parametric studies to examine critical parameters influencing the fire response of concrete beams reinforced with steel and fiber-reinforced polymer reinforcement. These parameters include sacrificial reinforcement scheme, size, and material type. It was concluded that the use of sacrificial reinforcement could be beneficial for mitigation purposes or as a repair solution for postfire events.

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Section: Literature Reviewmentioning

confidence: 99%

Enhancing fire resistance of reinforced concrete beams through sacrificial reinforcement

Hostetter

Naser

Hawileh

et al. 2022

Archit. Struct. Constr.

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“…When reinforced concrete elements are exposed to high temperature, their stiffness gets reduced, and they try to get elongate due to temperature effect (Kong, 2013; Albuquerque et al , 2018). Most of the failure occur after the elements subjected to fire (i.e.)…”

Section: Reinforced Concrete Elementsmentioning

confidence: 99%

A review on research of fire-induced progressive collapse on structures

Vishal

Satyanarayanan

2021

JSFE

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Purpose This paper delineates a literature review on fire-induced progressive collapse on structures and the effect of high temperature on structures and elements. After the occurrences of fire in the World Trade Center in the USA, the researchers started concentrating on the progressive collapse that happens due to high temperature. Currently, most of the researchers are working on fire-induced progressive collapse on structures using high-temperature behavior on materials which are used for construction. The researchers have been doing an intensive study to find a better strategy to prevent the building from structural fire damage or collapse with available codes and guidelines throughout the world. This paper aims to provide a better understanding and analytical solutions on the basis of the recent works done by researchers in fire-induced progressive collapse and methods adopted to find the collapse mechanism. Design/methodology/approach This paper is written by studying different literature papers of 109 related to progressive collapse on structures and fire-induced progressive collapse. Findings The behavior of structures due to high temperature and collapse conditions due to fire in different scenarios is identified. Originality/value This paper fulfills an identified need to study how the structure can withstand high-temperature conditions in our day-to-day lives.

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“…In their work, Albuquerque et al [22] made appropriate comparison on a RC beam subjected to bending with various boundary conditions (articulated and fixed). It was concluded that the resistance to fire action greatly influences boundary conditions in the beam and so, in some cases, this resulted in a 100 % increase in bearing capacity.…”

Section: Beammentioning

confidence: 99%

Overview of research on fire effects in RC elements and assessment of RC structures after fire

Lakušić¹

2021

JCE

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Procedures for estimating damage and remaining bearing capacity of RC structures after fire are presented in the paper. The paper describes the effect of fire on structures, the danger it poses for the loss of human lives, and financial losses it may generate. The damage to structural RC elements of a column, beam, slab, wall, and connection details, is presented in the paper. Although RC elements are generally considered to be fire resistant, their physical and mechanical characteristics are greatly influenced by temperature, while the bearing capacity before and after fire can be determined through a number of different methods that are presented in the paper. An overview of condition assessment for RC structures after fire is proposed, and methodology for taking further action is presented.

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Behavior of thermally restrained RC beams in case of fire

Cited by 37 publications

References 10 publications

Enhancing fire resistance of reinforced concrete beams through sacrificial reinforcement

Enhancing fire resistance of reinforced concrete beams through sacrificial reinforcement

A review on research of fire-induced progressive collapse on structures

Overview of research on fire effects in RC elements and assessment of RC structures after fire

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