A multi-mode displacement-based pushover (MDP) procedure for seismic assessment of buildings

Daei, Aydin; Zarrin, Mohamad

doi:10.1016/j.soildyn.2021.106950

Cited by 9 publications

(3 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In view of the simplicity and less computationally nature of the pushover procedure, it has gained growing popularity among practitioners and scholars in recent years as a tool for seismic design and evaluation of structures. Extensive research efforts (Antoniou and Pinho, 2004; Chopra and Goel, 2002; Daei and Zarrin, 2021; Kalkan and Kunnath, 2006a; Kreslin and Fajfar, 2011; Poursha et al, 2009; Zarrin et al, 2021) have been devoted to the development of advanced multi-modal pushover methods to overcome the shortcomings of the primary versions of this procedure. To gain a preliminary sense of the inelastic response characteristics of the case study frames, the pushover analysis is conducted on the frames prior to presenting the results of the nonlinear time history analyses.…”

Section: Preliminary Overview Of the Structural Behaviormentioning

confidence: 99%

Sensitivity of structural responses to the processing of near-fault ground motion records containing fling-step

Daei

Poursha

Zarrin

2023

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

Fling-step is one of the important characteristics of near-fault ground motions that is caused by a permanent static offset of the ground and appears as a one-sided velocity pulse and a large residual displacement at the end of the motion. Due to baseline errors in many ground motion records, they are processed (processing is a combination of baseline correction and filtering) before adding accelerograms to some earthquake databases whereby the residual displacements ( i.e., the permanent static offsets) in the fling records are typically eliminated. It is not clear to what extent the record processing can affect the nonlinear responses of structures subjected to fling-step records. To address this issue, the current study is conducted to investigate the sensitivity of the nonlinear structural responses to record processing. To achieve this goal, the seismic responses of three code-conforming reinforced concrete (RC) special moment-resisting frames with different heights subjected to two versions of fling-step ground motions including a processed version that static offsets are removed, and a baseline-corrected version with static offsets preserved are evaluated. The findings of this assessment indicate that even though the processing procedure does not preserve the static offsets of the fling-step ground motions, the seismic responses of the structures to the processed records may resemble those obtained under only the baseline-corrected ground motions (with static offsets preserved).

show abstract

Section: Preliminary Overview Of the Structural Behaviormentioning

confidence: 99%

Sensitivity of structural responses to the processing of near-fault ground motion records containing fling-step

Daei

Poursha

Zarrin

2023

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…The lateral load patterns (LLPs) Adoptive Pushover analysis is one of the force-based methods for pushover analysis that have been developed in recent years, where the applied load pattern is modified at each phase of the analysis based different mode properties of the structure [20]. during the POA there are factors affect the accuracy of the analysis and the predicted responses such as lateral load as well as updating the LLPs appropriate to the structural behavior, basically, the building frame is subjected to the gravitational loads.…”

Section: Lateral Load Patterns For Pushover Poamentioning

confidence: 99%

Pushover Analysis of Multi-Story Reinforced Concrete Frame Structure

Ali¹,

Yasin²

2023

J Econ Managem Res

View full text Add to dashboard Cite

Pushover analysis is a non-linear static procedure (NSP) used to examine the structural response of a building during the inelastic limit before it reaches the edge of partial or total collapse. In this study a model of multi-story reinforced concrete building along with applied loads is analyzed in powerful non-linear static procedure using computer software ETABS. A limited number of horizontal forces are then applied to imitate the impact of ground movement. The building is supposed as a 6-story building, no shear walls used in the model as the level of earthquake hazard assumed very low. Moreover, deformations are determined. The forces would then be increased gradually, NSPs convert multi-degree of freedom models to single-degree of freedom models utilizing a pushover analysis to determine capacity curve or pushover curve which is horizontal roof displacement vs base shear, This curve plot reveals the highest base motion that the structure can withstand, and then estimate the maximum global displacement by combining a ground response spectrum with the capacity curve.

show abstract

“…In recent years, new extensions to pushover analysis method were proposed in order to take into consideration bi‐directional earthquake, higher modes effect and torsion. Some examples and comparisons between enhanced pushover procedures and nonlinear time history analysis can be found in Shayanfar et al., [ 18 ] Bidoki and Shayanfar, [ 19 ] Christianto at al., [ 20 ] Daei and Zarrin, [ 21 ] Daei and Poursha. [ 22 ] All these attempts have lead to an improvement of nonlinear static analysis method, but concerning the nonlinear dynamic analysis much remains to be done.…”

Section: Introductionmentioning

confidence: 99%

A reduced order model for nonlinear time history seismic analyzes of elasto‐plastic 3D frame structures

Magisano

Corrado

Madeo

et al. 2022

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

A reduced order model for the nonlinear dynamic seismic analysis of elastoplastic 3D frame structures is presented. It is based on an approximated solution space for the displacement field that is assumed as the sum of two subspaces. The first subspace is generated by the relevant linear elastic modes of the generalized stiffness/mass linear eigenvalue problem in terms of participation factor. The second one is defined by collapse mechanisms associated to appropriate static load distributions. The time history analyzes are carried out within the reduced solution space, while the internal forces are evaluated on the full model to guarantee an accurate description of the constitutive laws. The proposed reduction method was tested for different structural geometries varying frequency content, direction and amplitude of the ground motion. Numerical results show accuracy and robustness also employing a few tens of modes, including elastic modes and plastic collapse mechanisms. In particular, the need for plastic modes in capturing the structural dynamics in case of seismic actions leading to significant plastic excursions is emphasized. This highlights the limits of simplified approaches based on the hypothesis of shape conservation in nonlinear problems, regardless of the building regularity.

show abstract

A multi-mode displacement-based pushover (MDP) procedure for seismic assessment of buildings

Cited by 9 publications

References 81 publications

Sensitivity of structural responses to the processing of near-fault ground motion records containing fling-step

Sensitivity of structural responses to the processing of near-fault ground motion records containing fling-step

Pushover Analysis of Multi-Story Reinforced Concrete Frame Structure

A reduced order model for nonlinear time history seismic analyzes of elasto‐plastic 3D frame structures

Contact Info

Product

Resources

About