Experimental Study on Square Steel Tubular Columns Under Compressive Axial Force With Cyclic Biaxial Bending Moment

Onogi, Takeshi; Sato, Atsushi; Yoshioka, Shimpei

doi:10.1002/cepa.1215

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…The seismic performance of box columns is dependent on the member compactness, the material strength, and the magnitude of axial load. When large axial force and large drift are applied to a column, it may exhibit significant shorting due to plate local buckling when plastic hinging occurs 1–5 . The magnitude of axial force on the column may also vary significantly due to the over‐turning of the frame associated with time‐varying column shortening.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid simulation of a steel dual system with buckling‐induced first‐story column shortening: A mixed control mode approach

Wang

Chou

Huang

et al. 2023

Earthq Engng Struct Dyn

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This paper presents a hybrid simulation (HS) with a proposed substructuring technique that captures the effect of first‐story column local buckling and axial shortening on the frame behavior. The HS is applied to examine the seismic response of a two‐dimensional seven‐story, two‐bay steel dual system. The experimental substructure consists of a full‐scale interior column and beam cruciform subassemblage, including a moderately ductile first‐story built‐up box column and two I‐shaped beams. Under combined axial and lateral loads, local buckling can occur near the column base, resulting in column shortening. The specimen is loaded through a four‐degree‐of‐freedom (DOF) mixed‐mode control (three displacement‐ and one force‐control) actuation system that simplifies the actual complex boundary conditions of the frame structure. To account for column shortening in the HS, a new approach consisting of a set of fictitious equivalent forces applied to columns in the numerical model to achieve compatible displacements with the experiment is implemented. Shortening of the two exterior columns in the model is simulated through finite element analysis using the computer program ABAQUS in an attempt to capture the redistribution of axial loads with column shortening. The test results confirm that the proposed modeling and control methods successfully integrate the experimental substructure and ABAQUS simulation into the HS, resulting in a more realistic frame response that captures the effect of column shortening in the analysis. The moderately ductile built‐up box column is verified to perform well in near‐fault earthquake loadings.

show abstract

Section: Introductionmentioning

confidence: 99%

“…When large axial force and large drift are applied to a column, it may exhibit significant shorting due to plate local buckling when plastic hinging occurs. [1][2][3][4][5] The magnitude of axial force on the column may also vary significantly due to the over-turning of the frame associated with time-varying column shortening.…”

Section: Introductionmentioning

confidence: 99%

Hybrid simulation of a steel dual system with buckling‐induced first‐story column shortening: A mixed control mode approach

Wang

Chou

Huang

et al. 2023

Earthq Engng Struct Dyn

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Shake‐table tests on steel moment‐resisting frames with detachable yielding zones

Landolfo,

D'Aniello,

Safaei

et al. 2024

Earthq Engng Struct Dyn

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This article presents an experimental campaign based on shake table tests conducted as part of the European research project FUTURE, funded in the framework of the H2020‐INFRAIA SERA program. Three steel moment‐resisting frame structures equipped with replaceable dissipative elements were tested. The experimental mockups were scaled two thirds from a reference building archetype designed per the latest draft of the upcoming version of Eurocode 8. Each mockup has different bolted end‐plate beam‐to‐column joints, namely reduced beam section (RBS), extended stiffened endplate (ESEP), and Haunched types, designed with European seismic prequalification rules. Additionally, detachable column segments at the base were designed with Reduced Column Sections (RCS) to localize the plastic deformation and enforce the intended global dissipation mechanism. The slab was detailed with reduced areas around the columns to minimize the direct composite action at beam‐to‐column joints. The mockups were subjected to incremental near‐field excitations with combined horizontal and vertical components. In this article, the experimental campaign is first described, providing details on the mockup's geometry, design, scaling, ground excitations, and sensor distribution. Then, the observed global and local responses are discussed. The results demonstrate that the global response of the mockups was significantly influenced by the type of beam‐to‐column joints, which exhibited the expected damage. The RCS configuration in the column bases also showed satisfactory behavior without leading to local or global instabilities throughout the performed tests.

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Effects of Section Compactness and SCWB Condition on Moment Redistribution and Plastic Hinging in SMF Built-Up Box Columns

Chou,

Xiong,

Kumar

et al. 2023

J. Struct. Eng.

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Experimental Study on Square Steel Tubular Columns Under Compressive Axial Force With Cyclic Biaxial Bending Moment

Cited by 3 publications

References 3 publications

Hybrid simulation of a steel dual system with buckling‐induced first‐story column shortening: A mixed control mode approach

Hybrid simulation of a steel dual system with buckling‐induced first‐story column shortening: A mixed control mode approach

Shake‐table tests on steel moment‐resisting frames with detachable yielding zones

Effects of Section Compactness and SCWB Condition on Moment Redistribution and Plastic Hinging in SMF Built-Up Box Columns

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