Analysis of tubular steel bridge piers

Ishizawa, Toshiki; Iura, Masashi

doi:10.1002/eqe.465

Cited by 10 publications

(4 citation statements)

References 12 publications

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“…In bridge structures, plastic hinging at the column base generally forms the main energy dissipation mechanism, and findings from research in that field can be useful for high-loading applications. Large steel box or circular tubular columns are often used in bridges, and the required rotational ductility is obtained by using hollow or concrete-filled rectangular or circular tubing columns (e.g., Kawashima et al, 1992;Usami et al, 2000;Zheng et al, 2000;Susantha et al, 2002;Marson and Bruneau, 2004;Ishizawa and Iura, 2005;Mamaghani, 2008). A-13…”

Section: Similar Findings Have Been Reported In Fema 355d State Of Tmentioning

confidence: 99%

Research plan for the study of seismic behavior and design of deep, slender wide flange structural steel beam-column members

Venture¹

2011

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The objective of this task was to develop a comprehensive long-range plan to research the seismic behavior of deep, slender wide flange structural steel beamcolumns in steel frames. Development of the plan included the investigation of available information on beam-column member and connection behavior in the literature, and considered the differences and interrelationships between member, subassemblage, and system performance. The resulting plan includes a summary of tasks for conducting both experimental and analytical research, and is intended to be the first step in the development of national consensus guidelines for designing and assessing the seismic performance of deep, slender wide-flange beam-columns in steel frame systems.The NEHRP Consultants Joint Venture is indebted to the leadership of Jim Malley, Project Director, and to the members of the Project Technical Committee, consisting of Charlie Carter, Jerry Hajjar, Dimitrios Lignos, Charles Roeder, and Mark Saunders for their contributions in developing this report and the resulting recommendations. The NEHRP Consultants Joint Venture also gratefully acknowledges Jack Hayes (NEHRP Director), Steve McCabe (NEHRP Deputy Director), Jay Harris (NIST Project Manager), Mike Mahoney (FEMA), and Helmut Krawinkler (FEMA Technical Monitor) for their input and guidance in the preparation of this report, Ayse Hortacsu for ATC project management, and Peter N. Mork for ATC report production services. Jon A. Heintz Program ManagerGCR 11-917-13 List of Tables Executive SummaryCurrent practice in modern steel frame design frequently concentrates seismic resistance into a few frames or a few bays within planar frames. In moment resisting frames, this practice results in column designs that are dominated by a combination of axial force and bending due to lateral deformation, rather than just axial force alone. Due to their increased in-plane flexural stiffness, deeper column sections are generally selected to satisfy drift criteria and to balance relative stiffness with deep beam sections. Columns that are generally stocky, in terms of both member stability and cross-sectional compactness requirements, are expected to perform well under seismic loading. Deeper, more slender columns, however, are more vulnerable to weak-axis and local buckling failure modes, and these sections must be checked against the potential for in-plane and out-of-plane instability under combined axial load and bending moment.The term deep refers to member depths that are nominally greater than 16 inches (i.e., W16 sections and larger). The term slender refers to members that are sensitive to instability or have cross-sectional elements with width-to-thickness ratios approaching the seismic compactness limits for highly ductile members. An area of critical need identified by the American Institute of Steel Construction (AISC) is the seismic performance of deep, slender, wide flange structural steel beam-column members when subjected to a range of axial loads. Research on the stability of th...

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Section: Similar Findings Have Been Reported In Fema 355d State Of Tmentioning

confidence: 99%

Research plan for the study of seismic behavior and design of deep, slender wide flange structural steel beam-column members

Venture¹

2011

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“…Lyu et al [10] investigated the seismic performance of thin-walled partially filled CFST columns by considering the cyclic local buckling of the steel tube. The steel uniaxial material model, proposed by Ishizawa and Iura [11], was initially established for simulating the behaviour of hollow steel bridge piers. Inai et al [12] proposed a uniaxial stress-strain relationship for simulating the cyclic post-buckling behaviour steel tubes in CFST members.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the cyclic behavior of steel tube in concrete‐filled steel tube members

Wang,

Lignos

2023

ce papers

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A concrete‐filled steel tube (CFST) specimen was tested under uniaxial loading to acquire the nonlinear monotonic and cyclic response of the steel tube in CFST members including inelastic cyclic local buckling. The failure mode, hysteretic response, envelope curves, strength, and stiffness degradation of the CFST specimen were comprehensively studied. The observed failure modes of the CFST specimen were local buckling and ductile fracture of the steel tube due to ultra‐low‐cycle fatigue. The effective stress‐strain curve of the steel tube exhibited negative stiffness due to local buckling. The compressive resistance of the CFST specimen decreased significantly when local buckling progressed at the steel tube. The tensile unloading stiffness slightly decreased relative to the elastic stiffness of the CFST specimen; conversely the compressive unloading stiffness experienced severe deterioration upon increased cyclic loading. The tensile stiffness decreased gradually during the whole loading process, while the post‐capping stiffness remained stable.

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“…It can be used for variety of cross-section shapes, considering axial force and bending moment coupled [16]. In this study, a uniaxial equivalent constitutive model of structural steel under cyclic loading was proposed for fiber beam element model.…”

Section: Introductionmentioning

confidence: 99%