Representation of Concrete-Filled Steel Tube Cross-Section Strength

Hajjar, Jerome F.; Gourley, Brett C.

doi:10.1061/(asce)0733-9445(1996)122:11(1327)

Cited by 115 publications

(57 citation statements)

References 10 publications

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“…This may be accomplished in several ways. One option models section behavior through multiple surfaces and flow rules defined in stress-resultant space (Hajjar and Gourley 1996;El-Tawil and Deierlein 2001). For example, elastic response is maintained if the loading point remains within the loading surface.…”

Section: Finite Element Formulationsmentioning

confidence: 99%

Nonlinear Seismic Analysis of Circular Concrete-Filled Steel Tube Members and Frames

Denavit

Hajjar

2012

J. Struct. Eng.

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The Newmark Structural Engineering Laboratory (NSEL) of the Department of Civil and Environmental Engineering at the University of Illinois at Urbana-Champaign has a long history of excellence in research and education that has contributed greatly to the state-of-the-art in civil engineering. Completed in 1967 and extended in 1971, the structural testing area of the laboratory has a versatile strong-floor/wall and a three-story clear height that can be used to carry out a wide range of tests of building materials, models, and structural systems. The laboratory is named for Dr. Nathan M. Newmark, an internationally known educator and engineer, who was the Head of the Department of Civil Engineering at the University of Illinois and the Chair of the Digital Computing Laboratory . He developed simple, yet powerful and widely used, methods for analyzing complex structures and assemblages subjected to a variety of static, dynamic, blast, and earthquake loadings. Dr. Newmark received numerous honors and awards for his achievements, including the prestigious National Medal of Science awarded in 1968 by President Lyndon B. Johnson. He was also one of the founding members of the National Academy of Engineering. Contact:Prof ABSTRACTAccurate nonlinear formulations are necessary for the assessment of structures under seismic and other extreme loading. In this work, a three-dimensional distributed plasticity beam element formulation for circular concrete-filled steel tubes has been developed for nonlinear static and dynamic analyses of composite seismic force resisting systems. A mixed basis for the formulation was chosen to allow for accurate modeling of both material and geometric nonlinearities. The formulation utilizes uniaxial cyclic constitutive models for the concrete core and steel tube that account for the salient features of each material, as well as the interaction between the two, including concrete confinement and local buckling of the steel tube. The accuracy of the formulation was verified against a wide variety of analytical and experimental results. The verification confirms the capability of the formulation to accurately produce realistic simulations of element and frame behavior. CONTENTS

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Section: Finite Element Formulationsmentioning

confidence: 99%

Nonlinear Seismic Analysis of Circular Concrete-Filled Steel Tube Members and Frames

Denavit

Hajjar

2012

J. Struct. Eng.

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“…Concrete creep and shrinkage are ignored. As stated by Hajjar and Gourley (1996), concrete-filled steel tubes rarely exhibit flexural-torsional or lateraltorsional buckling, these failure modes are thus not considered.…”

Section: Moment-curvature Analysismentioning

confidence: 99%

Jointless and Smoother Bridges: Behavior and Design of Piles

Frosch¹,

Chovichien²,

Durbin³

et al. 2006

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“…The fiber element method is an accurate numerical technique for determining the crosssection behavior of steel-concrete composite columns [14,15,[23][24][25]. In the fiber element method, a circular CFSST column cross-section is discretized into fine fiber elements as depicted in Fig.…”

Section: The Fiber Element Methodsmentioning

confidence: 99%