Seismic behavior of K-shaped eccentrically braced frames with high-strength steel: Shaking table testing and FEM analysis

Tian, Xiaohong; Su, Mingzhou; Lian, Ming; Feng, Weike; Shen, Li

doi:10.1016/j.jcsr.2017.12.030

Cited by 26 publications

(8 citation statements)

References 18 publications

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“…Many studies, which mainly focused on experimental and theoretical research, have been conducted on EBFs with shear links. Tian et al (2018) designed and manufactured a scaled three-story K-shaped EBF (KEBF) and subjected it to a shaking table test. The results showed that the shear deformation of the energy-dissipation links under an earthquake could effectively absorb more seismic energy.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance assessment of eccentrically braced steel frames with variable-cross-section horizontal shear links

Wu³

et al. 2022

Advances in Structural Engineering

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Based on the principle of web weakening, two types of variable-cross-section shear links for horizontal eccentrically braced steel frames (H-EBFs) were analyzed in this study. In the first design, an I-section link (L2) was designed with a lower web and wider flange than that of an ordinary shear link (L1), and in the second design, an I-section link composed of two small I-section beams (L3) was designed. To study the seismic behavior of the two types of H-EBFs, cyclic loading tests were performed on three scaled specimens, L2 (H-EBF-L2), L3 (H-EBF-L3), and a traditional link (H-EBF-L1). The results showed that most of the inelastic actions of the three specimens were concentrated in the shear links and that the failure modes were similar. Compared with specimen H-EBF-L1, the links of specimens H-EBF-L2 and H-EBF-L3 had better deformability, and the bearing capacity of the frames also improved simultaneously; thus, the energy-dissipation mechanism of H-EBF improved. The material costs of specimens H-EBF-L2 and H-EBF-L3 were reduced to a certain extent, realizing economic benefits. Additionally, the numerical models of the three specimens were established. The modeling results were in good agreement with the test results, and it was verified that the model could accurately simulate the loading process of the tests.

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Section: Introductionmentioning

confidence: 99%

Seismic performance assessment of eccentrically braced steel frames with variable-cross-section horizontal shear links

Wu³

et al. 2022

Advances in Structural Engineering

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“…High strength steel (HSS) with a nominal yield strength equal to or over 460 MPa [14][15][16][17] has been attracting increasing attention from the academia and engineering community in recent years. Research studies on the mechanical properties of HSS [18][19][20], HSS connections/components [21][22][23][24][25] and HSS structural systems [26][27][28][29] all shed insightful lights on the promise of HSS in steel construction. In engineering practice, the use of HSS may contribute to reducing the size and weight of structures and offer significant savings in delivery cost and material/energy consumption during steel production.…”

Section: Introductionmentioning

confidence: 99%

Net section resistance of bolted S690 steel angles subjected to tension

Yam

Jiang

et al. 2020

Thin-Walled Structures

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“…Tian et al in 2018 [24] examined the 3-storey building with K-shaped eccentric brace scaled 1 to 2 and concluded that the link beams were the weakest part of the lateral force system of the structure. Based on their research, using high-strength alloy (K-HSS-EBF) in the beam, can reduce the energy input to the structure greatly.…”

Section: Introductionmentioning

confidence: 99%

Seismic Behaviour Assessment of Eccentrically Split-X Braced Frames

Fanaie

Sheykhi

2019

Scientia Iranica

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Eccentrically braced frames (EBF) are lateral resisting systems with appropriate ductility and strength against earthquakes. An important kind of arranging such systems, recommended by Popov and also presented in AISC, is eccentrically split-X bracing. The axial force applied to the beam outside link beam is reduced causing the improvement of the behaviour of this type of bracing. In this research, for the first time, ductility factor, overstrength factor and response modification factor of eccentrically split-X braces are investigated through nonlinear static and incremental dynamic analyses and fragility curves are presented for different ratios of link beam length to span length. For this purpose, three buildings, 2-, 6-and 10-storey structures with the ratios of link beam length to span length (e/L) of 0.05, 0.1, 0.15 and 0.2 are considered. Ductility factor of R =3.55, overstrength factor of R s = 2.31 and response modification factor of R LRFD =8.06 are calculated under 10 earthquake records. It is concluded that the most appropriate values of e/L ratio in the eccentrically split-X bracing are 0.1 for tall structures and 0.05 for small ones. According to the log-normal distribution, the fragility curves are also plotted considering collapse prevention (CP) and immediate occupancy (IO) performance levels.

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Seismic behavior of K-shaped eccentrically braced frames with high-strength steel: Shaking table testing and FEM analysis

Cited by 26 publications

References 18 publications

Seismic performance assessment of eccentrically braced steel frames with variable-cross-section horizontal shear links

Seismic performance assessment of eccentrically braced steel frames with variable-cross-section horizontal shear links

Net section resistance of bolted S690 steel angles subjected to tension

Seismic Behaviour Assessment of Eccentrically Split-X Braced Frames

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