Second‐Order Refined Plastic‐Hinge Analysis for Frame Design. Part II

Liew, J.Y. Richard; White, Donald W.; Chen, W. F.

doi:10.1061/(asce)0733-9445(1993)119:11(3217)

Cited by 60 publications

(34 citation statements)

References 2 publications

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“…The early 90s saw the development of a refined plastic hinge-based element, involving the use of stiffness reduction factors to modify the value of an elastic stiffness matrix, here I-shaped element sections were considered [1,21,22]. By applying the tangent modulus concept, developed previously by White (1993) [23], gradual plasticisation behaviour was modelled leading to improved results [4,5,24]. Further improvements were made by Attalla et al (1994) who introduced a non-zero length quasi-hinge model involving a closed-form expression of the element force-deformation response, derived by exact integration of the section deformation [21].…”

Section: Concentrated Inelastic Method: Historical Developmentmentioning

confidence: 99%

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Quasi-hinge beam element implemented within the hybrid force-based method

Biglari

Harrison

Bícanić

2014

Computers & Structures

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Section: Concentrated Inelastic Method: Historical Developmentmentioning

confidence: 99%

“…The results of both methods are closer to the exact answer, compared to the conventional zero-length hinge method. These hinge-based methods can be much more computationally efficient than a conventional DIM [3] while still providing results of satisfactory accuracy for most practical purposes [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Quasi-hinge beam element implemented within the hybrid force-based method

Biglari

Harrison

Bícanić

2014

Computers & Structures

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“…For this reason, a number of researchers have developed models that have the computational efficiency of the concentrated plasticity models and the accuracy of spread-of-plasticity models (Liew et al, 1993;Attalla et al, 1994;El-Tawil and Deierleien, 1996). Nukala and White (2004) have extended these models to include three-dimentional stability behavior.…”

Section: A512 Fiber Modelsmentioning

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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“…13), os coeficientes S 1 e S 2 , denominados funções de estabilidade (Liew et al, 1993), são obtidos a partir da derivação da equação diferencial do elemento viga-coluna, conforme é apresentado nas Eqs. (14) e (15): …”

Section: Análise Estruturalunclassified

Análise de pórticos planos em situação de incêncio pelo método das rótulas plásticas

Landesmann

Batista

2005

Rem: Rev. Esc. Minas

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ResumoApresenta-se, nesse trabalho, um modelo numérico computacional para investigação do comportamento de estruturas metálicas aporticadas em situações de incên-dio. A análise é dividida em duas etapas, Térmica e Estrutural, respectivamente associadas à determinação do campo não-uniforme de temperaturas e da resposta estrutural sob ação do fogo.Os limites de resistência estrutural, relacionados com o tempo crítico de resistência ao fogo, são estimados por meio de modelo refinado de rótulas plásticas, permitindose considerar, de forma computacionalmente eficiente, os efeitos inelásticos de material e mudança de geometria. Resultados numéricos obtidos pelo modelo implementado, para um edifício de 4 andares, são apresentados e criticamente comparados com aqueles gerados pelo programa SAFIR, permitindo-se concluir sobre a aplicabilidade do modelo proposto.

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Second‐Order Refined Plastic‐Hinge Analysis for Frame Design. Part II

Cited by 60 publications

References 2 publications

Quasi-hinge beam element implemented within the hybrid force-based method

Quasi-hinge beam element implemented within the hybrid force-based method

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

Análise de pórticos planos em situação de incêncio pelo método das rótulas plásticas

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