Response of Steel Reduced Beam Section Connections Exposed to Fire

Mahmoud, Hussam; Ellingwood, Bruce R.; Turbert, Collin; Memari, Mehrdad

doi:10.1061/(asce)st.1943-541x.0001340

Cited by 15 publications

(11 citation statements)

References 29 publications

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“…Many researchers have focused on studying individual structural components to observe behavior when subjected to a fire. In particular, beam-to-column connections have been studied at length (Al-Jabri et al, 2006; Fischer and Varma, 2017; Garlock and Selamet, 2010; Hu and Engelhardt, 2011; Mahmoud et al, 2016; Memari and Mahmoud, 2014; Pakala et al, 2012; Qian et al, 2008; Sarraj, 2007; Tan and Huang, 2005; Wang et al, 2011; Yang et al, 2009; Yu et al, 2009). Beams, columns, and floors have also been studied in isolation (Agarwal et al, 2014; Agarwal and Varma, 2011, 2014; Choe et al, 2011; Dwaikat et al, 2011; Kodur et al, 2013; Naser and Kodur, 2016; Selamet and Garlock, 2012; Selden et al, 2016; Selden and Varma, 2016; Takagi and Deierlein, 2007; Zhao and Kruppa, 1997).…”

Section: Fire Hazardsmentioning

confidence: 99%

Research review: Post-earthquake fire assessment of steel buildings in the United States

Chicchi

Varma

2017

Advances in Structural Engineering

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Researchers and practitioners have traditionally analyzed building hazards independently; however, with the recent focus on resilience, a multi-hazard analysis approach has emerged which considers the implications of cascading hazards. This article reviews the state of the art for analysis and design of steel moment frame buildings subjected to fires following earthquakes, also known as post-earthquake fires. The current design and analysis approaches for fire and seismic hazards in the United States, which follow prescriptive approaches, are each explained. Performance-based methodologies for each hazard are described. A literature review pertaining to the system behavior of buildings exposed to post-earthquake fires is provided. This includes consideration of nonstructural damage caused from earthquakes that could in turn affect building fire performance. Finally, recommendations are made for future post-earthquake fire analyses and design using incremental dynamic analyses and incremental fire analyses to capture building performance when subjected to various levels of these cascading hazards. The procedure for this methodology is explained, providing a direction for future research.

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Section: Fire Hazardsmentioning

confidence: 99%

Research review: Post-earthquake fire assessment of steel buildings in the United States

Chicchi

Varma

2017

Advances in Structural Engineering

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“…Many of these systems were developed for the operations at general temperature without significant considerations on high temperature conditions, such as a fire situation. Once fire occurs, structures are exposed to high temperatures of 300-1500 • C [13,14], which can induce structural collapses. Such fire-induced structural collapse has caused significant casualties and property damages [15].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Smart Ball Sensor for Wireless Structural Health Monitoring in a Fire Situation

Kim

Hwang

Seong

et al. 2020

Sensors

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A variety of sensor systems have been developed to monitor the structural health status of buildings and infrastructures. However, most sensor systems for structural health monitoring (SHM) are difficult to use in extreme conditions, such as a fire situation, because of their vulnerability to high temperature and physical shocks, as well as time-consuming installation process. Here, we present a smart ball sensor (SBS) that can be immediately installed on surfaces of structures, stably measure vital SHM data in real time and wirelessly transmit the data in a high-temperature fire situation. The smart ball sensor mainly consists of sensor and data transmission module, heat insulator and adhesive module. With the integrated device configuration, the SBS can be strongly attached to the target surface with maximum adhesion force of 233.7-N and stably detect acceleration and temperature of the structure without damaging the key modules of the systems even at high temperatures of up to 500 °C while ensuring wireless transmission of the data. Field tests for a model pre-engineered building (PEB) structure demonstrate the validity of the smart ball sensor as an instantly deployable, high-temperature SHM system. This SBS can be used for SHM of a wider variety of structures and buildings beyond PEB structures.

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“…Fire-induced high heat can severely reduce yield stress and elasticity modulus of steel (CEN, 2005), leading to a decrease in strength, stiffness and, consequently, the seismic performance of steel structures (Masoumi and Farajpourbonab, 2018; Qin and Mahmoud, 2019; Mahmoud et al , 2016). To reach these desired characteristics, the thin infill plate should be designed so that it undergoes buckling before the demolition (yield or buckling) of other peripheral boundary components and is yielded by further structure drift.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Performance of steel-plate shear wall at high temperature

Jamshidi

Naserabadi

Oliaei

2020

JSFE

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Purpose The high heat induced by fire can substantially decrease the load-bearing capacity, which is more critical in unprotected steel structures than concrete reinforced structures. One of the conventional steel structures is a steel-plate shear wall (SPSW) in which thin infill steel plates are used to resist against the lateral loads. Due to the small thickness of infill plates, high heat seems to dramatically influence the lateral load-bearing capacity of this type of structures. Therefore, this study aims to provide an investigation into the performance of SPSW with reduced beam section at high temperature. Design/methodology/approach In the present paper, to examine the seismic performance of SPSW at high temperature, 48 single-span single-story steel frames equipped with steel plates with the thicknesses of 2.64 mm, 5 mm and 7 mm and yield stresses of 85 MPa, 165 MPa, 256 MPa and 300 MPa were numerically modeled. Furthermore, their behavioral indices, namely, strength, stiffness, ductility and hysteresis behavior, were studied at the temperatures of 20, 458, 642 and 917? The simulated models in the present paper are based on the experimental specimen presented by Vian and Bruneau (2004). Findings The obtained results revealed that the high heat harshly diminishes the seismic performance of SPSW so that the lateral strength is reduced even by 95% at substantially high temperatures. Therefore, SPSW starts losing its strength and stiffness at high temperature such that it completely loses its capacity of strength, stiffness and energy dissipation at the temperature of 917? Moreover, it was proved that by separating the percentage of their participations variations of the infill plate in SPSW, their behavior and the bare frame can be examined even at high temperatures. Originality/value To the best of the authors’ knowledge, the seismic performance of SPSW at different temperatures has not been evaluated and compared yet.

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Response of Steel Reduced Beam Section Connections Exposed to Fire

Cited by 15 publications

References 29 publications

Research review: Post-earthquake fire assessment of steel buildings in the United States

Research review: Post-earthquake fire assessment of steel buildings in the United States

Multifunctional Smart Ball Sensor for Wireless Structural Health Monitoring in a Fire Situation

Performance of steel-plate shear wall at high temperature

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