Experimental Study on Fire Resistance of H-Shaped Steel Beams With High Strength Bolted Joints

Hirashima, Takeo; Toyoda, Koji; Yatagai, Atsushi; Esaki, Yu; Tasaka, S.; Yoshida, Masatomo; Masuda, Hideaki; Harada, Kazunori

doi:10.3130/aijs.75.2257

Cited by 3 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The time to reach the limiting rate of deflection for flexural elements in accordance with ISO834-1 was 67.5 min. This result was similar to previous report [12] of load-bearing fire tests, imitating the action of continuous beams with beam splice connections. As shown in Fig.…”

Section: Resultssupporting

confidence: 92%

“…The resistance of the beam-splice connection was on the bolt failure and was calculated from the strength of the bolts. In this study, the differences of steel temperatures between the mid-span, the ends of the beam, and the beam-splice connections were also taken into consideration [12]. In order to take into account the considerable difference of their temperatures, the critical temperature was defined by the mean temperature of the section at the mid-span of the beam at the fire resistance time or at the limit state stage.…”

Section: Critical Temperature Of the Beammentioning

confidence: 99%

See 1 more Smart Citation

An Experimental Investigation of Structural Fire Behaviour of a Rigid Steel Frame

Hirashima¹,

Okuwaki²,

Zhao³

et al. 2014

Fire Saf. Sci.

View full text Add to dashboard Cite

Some experimental studies have been conducted on structural fire behaviour of steel sub-frames in order to investigate the effects of thermal stress due to the axial restraint from columns to a heated beam on the behaviour of connections, and its influences on the connected beam and robustness of steel frames. However, the object connections were not beam-to-beam connections but beam-to-column connections with fin plates, end plates, and web cleats. This paper discusses, on the basis of experimental results, structural fire behaviour of a rigid steel frame with fully-moment-resisting beam-to-beam connections with splice plates and HSFG bolts, and beam-to-column connections with full penetration welds. The structural behaviour in the test was also analysed with finite element analysis using Bernoulli-Euler beam elements. The test results indicated that the moment-resisting connections in the rigid steel frame have sufficient load-carrying capacity, but failure may occur in the connected beam due to inadequate shear resistance of the beam web in fire. The critical temperature of the steel beam could be approximated on the basis of its inherent resistance at elevated temperature and initial effects, because the thermal stress disappeared at the fire limit stage. This study was also intended to provide experimental data to help understand the fundamental behaviour of rigid steel frames in fire.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Critical Temperature Of the Beammentioning

confidence: 99%

An Experimental Investigation of Structural Fire Behaviour of a Rigid Steel Frame

Hirashima¹,

Okuwaki²,

Zhao³

et al. 2014

Fire Saf. Sci.

View full text Add to dashboard Cite

show abstract

Fire Resistance of Steel Beams Including Beam-Column Welded Connections With Through Diaphragms

Ozaki

Kawasaki

2017

Nihon Kenchiku Gakkai Kozokei Ronbunshu

View full text Add to dashboard Cite

Main purpose of this study is to clarify both load-bearing and deformation capacity for steel beams including beam-column welded connections at high temperature, by conducting their experiments under a condition on constant temperature and gradually increasing load. The beam-column welded connection with through diaphragms is arranged in the center of beam specimen. The welded connection without scallops in the wide flange beam is used, which is widely used for steel structures in Japan and difficult to occur brittle fracture at severe earthquake. The specimen temperature was gradually risen by an electric furnace, and the shear force was applied after the temperature reached to the test temperature and kept constant it. From minute investigations on the experimental results, it was clarified that all specimens exhibited the beam bending collapse mode and possessed the larger bending strength than the full plastic moment at each temperature. It is expected that the beam-column welded connection with high seismic performance by the non-scallop working also possesses the high load-bearing and deformation capacity at fire.

show abstract

高力ボルト接合柱継手を有する鋼柱の耐火性能評価

TERUSE,

OZAKI

2024

Nihon Kenchiku Gakkai Kozokei Ronbunshu

View full text Add to dashboard Cite

In this study, axially loaded compression experiments at elevated temperatures for steel column specimens with high-strength bolted connections providing clearance-gaps between column faces were conducted to clarify the fire resistance performance and the surface-touch behavior of the column cross-sections in the connection after the slip-behavior. The steady state, transient state, and thermal stress experiments at the elevated temperatures were conducted. Experimental results show that the slipped column connection at elevated temperature exhibited the stable load-bearing capacity because the column cross-section surfaces in the connection were wholly touched and the axial load was transmitted by the surface-touch without the bolt shear-fractures.

show abstract

Experimental Study on Fire Resistance of H-Shaped Steel Beams With High Strength Bolted Joints

Cited by 3 publications

References 5 publications

An Experimental Investigation of Structural Fire Behaviour of a Rigid Steel Frame

An Experimental Investigation of Structural Fire Behaviour of a Rigid Steel Frame

Fire Resistance of Steel Beams Including Beam-Column Welded Connections With Through Diaphragms

高力ボルト接合柱継手を有する鋼柱の耐火性能評価

Contact Info

Product

Resources

About