Development of a Steel Brace with Intentional Eccentricity and Experimental Validation

Skalomenos, Konstantinos A.; Inamasu, Hiroyuki; Shimada, Hironari; Nakashima, Masayoshi

doi:10.1061/(asce)st.1943-541x.0001809

Cited by 20 publications

(27 citation statements)

References 15 publications

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“…Although the seismic behavior and design of gusset plate connections in steel braced frames have been main research topics for many years in the field, the ultimate capacity of gusset plates in rotational ductility and strength has not been fully clarified yet. This is because the bracing members often fracture before the bracing connection fails . After fracturing of the brace at midlength, the brace member no longer transfers any deformations to the gusset plate connection and the ultimate capacity of the connections cannot be determined experimentally.…”

Section: Research Applicationmentioning

confidence: 99%

“…The authors have tested a conventional steel brace installed into a steel frame through gusset plate connections . Typical design details for the brace under consideration are illustrated in Figure A.…”

Section: Research Applicationmentioning

confidence: 99%

“…This is because the bracing members often fracture before the bracing connection fails. [15][16][17][18][19] After fracturing of the brace at midlength, the brace member no longer transfers any deformations to the gusset plate connection and the ultimate capacity of the connections cannot be determined experimentally.…”

Section: Overviewmentioning

confidence: 99%

“…The authors have tested a conventional steel brace installed into a steel frame through gusset plate connections. 17 Typical design details for the brace under consideration are illustrated in Figure 3A. A steel pipe having a compact section with diameter D equal to 114.3 mm and thickness t b equal to 3.5 mm made of conventional Japanese STK400 steel (equivalent to A36 in the United States for hollow sections) was adopted.…”

Section: Demonstration Test Examplementioning

confidence: 99%

“…Two hydraulic jacks controlled for applying axial loads and rotations ensure physical continuity between the tested connections and the simulated bracing member. The test method acquires data at the ultimate state of connection failure that cannot usually be recorded in conventional test schemes (test of entire bracing system) because of earlier fracture of bracing members (ie, less‐ductile segment in Figure ) . The proposed test method offers an experimental platform for evaluating the performance and quantifying the actual ultimate strength and deformation capacity of individual structural details, such as bracing connections, to failure.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

On‐line hybrid test method for evaluating the performance of structural details to failure

Skalomenos

Kurata

Nakashima

2017

Earthq Engng Struct Dyn

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Summary A test environment to evaluate the seismic performance of gusset plate connections intended for steel braced frames is proposed. The developed test method combines the substructuring techniques with finite element analysis methods in an on‐line hybrid scheme. Numerical substructure analysis is conducted on bracing members, while bracing connections are treated as experimental substructures. A force‐displacement combined control imposed with the aid of 2 jacks ensures physical continuity between the analysis and test. The rotational behavior of gusset plate connections subjected to large inelasticity and varying axial loading until fracture is investigated. Two gusset plate details were designed and tested to verify the efficiency of the proposed method. The test method is rational, and smooth operation is achieved. The test results revealed the advantage of the developed on‐line hybrid test method in exploring the ultimate capacity of bracing connections.

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Section: Research Applicationmentioning

confidence: 99%

Section: Research Applicationmentioning

confidence: 99%

Section: Overviewmentioning

confidence: 99%

Section: Demonstration Test Examplementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

On‐line hybrid test method for evaluating the performance of structural details to failure

Skalomenos

Kurata

Nakashima

2017

Earthq Engng Struct Dyn

Self Cite

View full text Add to dashboard Cite

show abstract

03.03: Feasibility of hybrid simulation for testing steel connections of braces with intentional eccentricity

et al. 2017

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An online hybrid test environment to examine the seismic performance of the gusset plate connections of steel braces is developed by incorporating sub-structuring techniques and finite element methods. In the developed test system, the behaviour of the brace member is simulated by the finite element analysis program ABAQUS, while the brace end connection is physically tested. Two hydraulic jacks are used to simulate the physical continuity between the analytical and experimental substructures by controlling axial load and out-of-plane rotation. A MATLAB user subroutine is created as the interface between the main control program and ABAQUS to impose the target rotation and axial force to the connection quasi-statically. A gusset plate connection designed to behave as a pin connection is tested and its efficiency to accommodate inelastic rotations was evaluated up to 4% story drift. The test method is reasonable, with smooth operation and ensures realistic loading and boundary conditions.

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Performance Evaluation of Concentric and Eccentric Buckling Restrained Braces on the Dynamic Behaviour of RC Structures

Shankar¹,

Lamsal²,

Shrestha³

et al. 2020

Lecture Notes on Multidisciplinary Industrial Engineering

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Development of a Steel Brace with Intentional Eccentricity and Experimental Validation

Cited by 20 publications

References 15 publications

On‐line hybrid test method for evaluating the performance of structural details to failure

On‐line hybrid test method for evaluating the performance of structural details to failure

03.03: Feasibility of hybrid simulation for testing steel connections of braces with intentional eccentricity

Performance Evaluation of Concentric and Eccentric Buckling Restrained Braces on the Dynamic Behaviour of RC Structures

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