Dynamic P-Delta Effects for Flexible Inelastic Steel Structures

Gupta, Akshay; Krawinkler, Helmut

doi:10.1061/(asce)0733-9445(2000)126:1(145)

Cited by 117 publications

(73 citation statements)

References 6 publications

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“…Strong evidence delivers the results of a global pushover analysis [2]. During this nonlinear static analysis gravity loads are applied, and subsequently the structure is subjected to lateral forces.…”

Section: Assessment Of the Vulnerability To Global P-delta Effectsmentioning

confidence: 78%

“…by Bernal [1], Gupta and Krawinkler [2], Aydinoglu [3], Ibarra and Krawinkler [4], and Lignos and Krawinkler [5]. Asimakopoulos et al [6] and Villaverde [7] provide an overview on studies dealing with collapse by dynamic instability in earthquake excited structures.…”

Section: Introductionmentioning

confidence: 99%

“…In multi-story frame structures gravity loads may impair substantially the complete structure or only a subset of stories [2]. The local P-delta effect may induce collapse of a local structural element, which does not necessarily affect the stability of the complete structure.…”

Section: Introductionmentioning

confidence: 99%

“…The local P-delta effect may induce collapse of a local structural element, which does not necessarily affect the stability of the complete structure. An indicator of the severity of the local P-delta effect is the story stability coefficient, Gupta and Krawinkler [2]. Alternatively, Aydinoglu [3] proposes the use of the geometric story stiffness instead of the story stability coefficient.…”

Section: Introductionmentioning

confidence: 99%

“…Alternatively, Aydinoglu [3] proposes the use of the geometric story stiffness instead of the story stability coefficient. However, a consistent relationship between the local P-delta effect and the global P-delta effect, which characterizes the overall impact of gravity loads on the structure, cannot be established due to dynamic interaction between adjacent stories in a multi-story frame structure [2].…”

Section: Introductionmentioning

confidence: 99%

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Seismic Induced Global Collapse of Non-deteriorating Frame Structures

Adam

Jäger

2010

Computational Methods in Applied Sciences

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In a severe seismic event the destabilizing effect of gravity loads, i.e. the P-delta effect, may be the primary trigger for global collapse of quite flexible structures exhibiting large inelastic deformations. This article deals with seismic induced global collapse of multi-story frame structures with non-deteriorating material properties, which are vulnerable to the P-delta effect. In particular, the excitation intensity for P-delta induced structural collapse, which is referred to as collapse capacity, is evaluated. The initial assessment of the structural vulnerability to P-delta effects is based on pushover analyses. More detailed information about the collapse capacity renders Incremental Dynamic Analyses involving a set of recorded ground motions. In a simplified approach equivalent single-degree-of-freedom systems and collapse capacity spectra are utilized to predict the seismic collapse capacity of regular multi-story frame structures.

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Section: Assessment Of the Vulnerability To Global P-delta Effectsmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Seismic Induced Global Collapse of Non-deteriorating Frame Structures

Adam

Jäger

2010

Computational Methods in Applied Sciences

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Estimation of seismic drift demands for frame structures

Gupta

Krawinkler

2000

Earthquake Engng. Struct. Dyn.

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186

119

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SUMMARYA process is outlined and evaluated for the estimation of seismic roof and storey drift demands for frame structures from the spectral displacement demand at the "rst mode period of the structure. The spectral displacement demand is related to the roof drift demand for the multi-degree-of-freedom (MDOF) structure using three modi"cation factors, accounting for MDOF e!ects, inelasticity e!ects, and P-delta e!ects. Median values and measures of dispersion for the factors are obtained from elastic and inelastic time history analyses of nine steel moment resisting frame structures subjected to sets of ground motions representative of di!erent hazard levels. The roof drift demand is related to the storey drift demands, with the results being strongly dependent on the number of stories and the ground motion characteristics. The relationships proposed in this paper should prove useful in the conceptual design phase, in estimating deformation demands for performance assessment, and in improving basic understanding of seismic behaviour. Copyright 2000 John Wiley & Sons, Ltd.

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Inelastic Analysis and Design Concepts (with Particular Reference to H‐Sections)

Sen¹

2009

Fundamentals of Seismic Loading on Structures

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Dynamic P-Delta Effects for Flexible Inelastic Steel Structures

Cited by 117 publications

References 6 publications

Seismic Induced Global Collapse of Non-deteriorating Frame Structures

Seismic Induced Global Collapse of Non-deteriorating Frame Structures

Estimation of seismic drift demands for frame structures

Inelastic Analysis and Design Concepts (with Particular Reference to H‐Sections)

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