Restraint Effect on Lateral Buckling Load of Continuous Braced H-Shaped Beams Based on Partial Frame Loading Tests

Yoshino, Yuki; Liao, Wang; Kimura, Yuichi

doi:10.3130/aijs.87.634

Cited by 6 publications

(5 citation statements)

References 33 publications

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“…Therefore, TF21 in Figure 7(a-2) is a connector in which the tight frame is welded in two rows along the length of the beam on the top flange, increasing the number of bolted joint locations. Here, previous experiments [51] have confirmed the deformation of the tight frame. Additionally, the shape of the roof folded plate differs from that of the tight frame; the height of the roof folded plate shown in Figure 5 is 88 mm, while the height of the tight frame is 93 mm.…”

Section: Specimen Configurationsupporting

confidence: 82%

“…In the depicted actual structure in Figure 2a, tight frames are meticulously welded to the H beams in a linear configuration along the beam length at the center of the top flange and are fastened to each top flange of the roof folded plate. As per the findings from the partial frame loading tests [51], the out-of-plane torsional deformation resulting from the lateral buckling of the H beams induced localized buckling near the bolt holes in the beam-roof folded plate junctions. Consequently, the rotational stiffness of the roof folded plate diminished to a fractional percentage of its theoretical stiffness due to this localized buckling.…”

Section: Introductionmentioning

confidence: 54%

“…Yoshino et al [51] delved into the stiffening effect of a roof folded plate on the reverse buckling of a beam through partial frame loading tests. In the depicted actual structure in Figure 2a, tight frames are meticulously welded to the H beams in a linear configuration along the beam length at the center of the top flange and are fastened to each top flange of the roof folded plate.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, Yoshino et al [38][39][40][41]51] have investigated the design capacity associated with the use of the Japanese design code [46]. In this paper, the lateral buckling design capacity of H beams continuously stiffened by roof folded plates is elucidated by applying a connection method that ensures the joint stiffness between the roof folded plate and the beam using Japanese and European design codes [46,47].…”

Section: Introductionmentioning

confidence: 99%

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Rotational Stiffening Performance of Roof Folded Plates in Torsion Tests and the Stiffening Effect of Roof Folded Plates on the Lateral Buckling of H Beams in Steel Structures

Yoshino,

Kimura

2024

Buildings

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Non-structural members, such as roofs and ceilings, become affixed to main beams that are known as structural members. When such main beams experience bending or compressive forces that lead to lateral buckling, non-structural members may act to restrain the resulting lateral buckling deformation. Nevertheless, neither Japanese nor European guidelines advocate for the utilization of non-structural members as lateral buckling stiffeners for beams. Additionally, local buckling ensues near the bolt apertures in the beam–roof folded plate connection due to the torsional deformation induced by the lateral buckling of the H beam, thereby reducing the rotational stiffness of the roof folded plate to a percentage of its ideal stiffness. This paper conducts torsional experiments on roof folded plates, and with various connection methods between these plates and the beams, to comprehend the deformation mechanism of roof folded plates and the relationship between their rotational stiffness and the torsional moment. Then, the relationship between the demand values against restraining the lateral buckling of the main beam and the experimentally determined bearing capacity of the roof folded plate is elucidated. Results indicate the efficacy of utilizing the roof folded plate as a continuous brace. The lateral buckling design capacity of H beams that are continuously stiffened by roof folded plates is elucidated via application of a connection method that ensures joint stiffness between the roof folded plate and the beam while using Japanese and European design codes.

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Section: Specimen Configurationsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Rotational Stiffening Performance of Roof Folded Plates in Torsion Tests and the Stiffening Effect of Roof Folded Plates on the Lateral Buckling of H Beams in Steel Structures

Yoshino,

Kimura

2024

Buildings

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“…Figure 12 depicts the loading frame and specimen setup. The apparatus was designed in reference to earlier experimentation [76]. The force was imposed on the loading beam through the hydraulic jack.…”

Section: Test Setup Of Cyclic Loading Test On An I-shaped Beam With A...mentioning

confidence: 99%

Structural Damage Detection Technique of Secondary Building Components Using Piezoelectric Sensors

Suzuki,

Liao,

Shibata

et al. 2023

Buildings

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With demand for the long-term continued use of existing building facilities, structural health monitoring and damage detection are attracting interest from society. Sensors of various types have been practically applied in the industry to satisfy this need. Among the sensors, piezoelectric sensors are an extremely promising technology by virtue of their cost advantages and durability. Although they have been used in aerospace and civil engineering, their application for building engineering remains limited. Remarkably, recent catastrophic seismic events have further reinforced the necessity of rapid damage detection and quick judgment about the safe use of facilities. Faced with these circumstances, this study was conducted to assess the applicability of piezoelectric sensors to detect damage to building components stemming from concrete cracks and local buckling. Specifically, this study emphasizes structural damage caused by earthquakes. After first applying them to cyclic loading tests to composite beam component specimens and steel frame subassemblies with a folded roof plate, the prospective damage positions were also found using finite element analysis. Crack propagation and buckling locations were predicted adequately. The piezoelectric sensors provided output when the concrete slab showed tensile cracks or when the folded roof plate experienced local buckling. Furthermore, damage expansion and progression were detected multiple times during loading tests. Results showed that the piezoelectric sensors can detect the structural damage of building components, demonstrating their potential for use in inexpensive and stable monitoring systems.

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Lateral Buckling Behavior and Plastic Deformation Performance of Continuously Braced H-Shaped Beams with Warp Restraint in Partial Frames

Yoshino,

Kimura

2023

Lecture Notes in Civil Engineering

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Restraint Effect on Lateral Buckling Load of Continuous Braced H-Shaped Beams Based on Partial Frame Loading Tests

Cited by 6 publications

References 33 publications

Rotational Stiffening Performance of Roof Folded Plates in Torsion Tests and the Stiffening Effect of Roof Folded Plates on the Lateral Buckling of H Beams in Steel Structures

Rotational Stiffening Performance of Roof Folded Plates in Torsion Tests and the Stiffening Effect of Roof Folded Plates on the Lateral Buckling of H Beams in Steel Structures

Structural Damage Detection Technique of Secondary Building Components Using Piezoelectric Sensors

Lateral Buckling Behavior and Plastic Deformation Performance of Continuously Braced H-Shaped Beams with Warp Restraint in Partial Frames

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