Experimental study on brace to HSS column connection using through-gusset plate

Ebrahimi, Samira; Mirghaderi, Seyed Rasoul; Zahrai, Seyed Mehdi; Najafi, Afshin; Otaghsaraie, Seyed Mojtaba Seyedzadeh

doi:10.1016/j.engstruct.2021.111948

Cited by 14 publications

(8 citation statements)

References 24 publications

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“…Zhang et al [ 5 ] conducted experiments on 12 specimens to study the low-cycle fatigue behavior of I-shaped steel bracing members with gusset plate connections, and the results showed that there were three locations vulnerable to damage following three different damage sequences. Ebrahimi et al [ 6 ] confirmed the gusset plate played an important role when transferring stresses, so should be considered according to the details of the columns. Ebrahimi et al [ 6 ] noted that limited studies have been carried out on the gusset plate to hollow structural section (HSS) column, and proposed a new gusset plate connection passed through HSS column called the through-gusset plate.…”

Section: Introductionmentioning

confidence: 99%

“…Ebrahimi et al [ 6 ] confirmed the gusset plate played an important role when transferring stresses, so should be considered according to the details of the columns. Ebrahimi et al [ 6 ] noted that limited studies have been carried out on the gusset plate to hollow structural section (HSS) column, and proposed a new gusset plate connection passed through HSS column called the through-gusset plate. Dong and Wang [ 7 ] developed a new type of joint structure with greater ductility and higher strength called beam–column joint with a gusset plate angle (JGA), and the influence of each of the joint components on the overall performance of the structure was evaluated by finite element analysis and experiment.…”

Section: Introductionmentioning

confidence: 99%

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Seismic Behavior of Concrete Columns Retrofitted with a Brace-Type Replaceable Steel Link

Kim

Lee

2023

Materials

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This paper presents the results of a combined cyclic loading test on a single reinforced concrete column which was retrofitted with a newly proposed brace-type replaceable steel link. A total of four retrofitted reinforced concrete columns, with the length of the brace as a variable, were fabricated and tested. A companion column without retrofitting was used as the control specimen. The test results indicate that the proposed brace-type replaceable steel link can be effective in retrofitting the concrete columns, resulting in improvements in the strength, stiffness, and energy dissipation of columns. We observed that the maximum load increases by at least 87%, effective stiffness increases by 44%, and energy dissipation capacity increases by 91% when compared with non-retrofitted specimen.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seismic Behavior of Concrete Columns Retrofitted with a Brace-Type Replaceable Steel Link

Kim

Lee

2023

Materials

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“…[ 33,34 ] It was assumed that braces buckled out of plane, and consequently, a linear yield line of

2 t_{GP}

(

t_{GP}

is the gusset plate thickness) was considered between the end of brace and the gusset plate lines restrained by beam and column. Through‐gusset plate connections proposed by Ebrahimi et al [ 24–27 ] for the connection between the gusset plate and HSS and CFT columns were used in this investigation.…”

Section: Experimental Programmentioning

confidence: 99%

“…The experimental observations indicated that this connection experienced rupture and severe slip in bolts. [ 25 ] Therefore, in CFT‐SCBF specimens, it was assumed that the connection between beam and gusset plate, as shown in Figure 7b, was provided through the use of the method proposed by Ebrahimi et al [ 27 ]…”

Section: Experimental Programmentioning

confidence: 99%

“…The plasticity started at the flanges of the lower story beam and thereafter extended over the depth of the beam web. Ebrahimi et al [ 25 ] indicated that the use of beam–column moment connections by through‐plates in SCBFs can improve the frame behavior and increase the strength, ductility, and energy dissipation capacity.…”

Section: Experimental Observationsmentioning

confidence: 99%

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Experimental evaluation of composite and non‐composite columns and braces in special concentrically braced frames

Ebrahimi

Mirghaderi

Zahrai

2022

Structural Design Tall Build

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Hollow structural section (HSS) and concrete-filled tube (CFT) cross-sections have been widely employed in the columns and braces of special concentrically braced frames (SCBFs). Square-HSS cross-section widely used in multistory frames is filled with concrete and converted to square-CFT cross-section to enhance the behavior of this cross-section. However, some investigations indicated that circular-HSS cross-section filled with concrete (circular-CFT) showed better behavior in comparison with square-CFT cross-section due to more uniform and larger concrete confinement in circular-CFT cross-section. The current study was experimentally undertaken to evaluate (1) the seismic performance and the global and local hysteresis responses of HSS and CFT members with various cross-section shapes from initial elastic range to collapse in the system level of multistory SCBFs, (2) the behavioral differences between square cross-section and circular cross-section, and (3) the behavioral differences between HSS cross-sections and CFT cross-sections employed in the columns and braces of SCBFs. Four full-scale one-bay, two-story SCBFs with four various cross-sections, namely, square-HSS, circular-HSS, square-CFT, and circular-CFT, for columns and braces were subjected to cyclic lateral loading. Evaluating base shearroof drift hysteretic loops of SCBF specimens demonstrated that SCBF specimens with CFT columns and braces (CFT-SCBFs) experienced respectively around 107%, 58%, 28%, and 152% higher stiffness, post-yielding and post-buckling strengths, ductility, and energy dissipation capacity than SCBF specimens with HSS columns and braces (HSS-SCBF). In addition, the experimental observations indicated that CFT braces experienced local buckling initiation, crack initiation, and fracture at respectively 2.22, 2.35, and 2.32 times of roof drifts of those exhibited by HSS braces.Moreover, assessing braces with various cross-sections indicated that CFT braces showed an increase in compression strength, post-buckling strength, compression axial deformation, and out-of-plane buckling approximately by 83%, 152%, 127%, and 100%, respectively, in comparison with HSS braces. Finally, square-HSS/CFT braces sustained rupture propagation better than circular-HSS/CFT braces.

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Evaluation of the Behavior of Gusset Plates in Concentrically Braced Steel Frames Under Cyclic Loading

Jamkhaneh

Kontoni

Ahmadi

2022

Lecture Notes in Civil Engineering

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Experimental study on brace to HSS column connection using through-gusset plate

Cited by 14 publications

References 24 publications

Seismic Behavior of Concrete Columns Retrofitted with a Brace-Type Replaceable Steel Link

Seismic Behavior of Concrete Columns Retrofitted with a Brace-Type Replaceable Steel Link

Experimental evaluation of composite and non‐composite columns and braces in special concentrically braced frames

Evaluation of the Behavior of Gusset Plates in Concentrically Braced Steel Frames Under Cyclic Loading

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