Adaptive Modal Combination Procedure for Nonlinear Static Analysis of Building Structures
Authors:
- 1 November 2006
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Structural Engineering
- Vol. 132 (11) , 1721-1731
Abstract
A new pushover analysis procedure derived through adaptive modal combinations (AMC) is proposed for evaluating the seismic performance of building structures. The methodology offers a direct multimode technique to estimate seismic demands and attempts to integrate concepts built into the capacity spectrum method recommended in ATC-40 (1996), the adaptive method originally proposed by Gupta and Kunnath (2000) and the modal pushover analysis advocated by Chopra and Goel (2002). The AMC procedure accounts for higher mode effects by combining the response of individual modal pushover analyses and incorporates the effects of varying dynamic characteristics during the inelastic response via its adaptive feature. The applied lateral forces used in the progressive pushover analysis are based on instantaneous inertia force distributions across the height of the building for each mode. A novel feature of the procedure is that the target displacement is estimated and updated dynamically during the analysis by incorp...Keywords
This publication has 12 references indexed in Scilit:
- DEVELOPMENT AND VERIFICATION OF A DISPLACEMENT-BASED ADAPTIVE PUSHOVER PROCEDUREJournal of Earthquake Engineering, 2004
- Evaluation of a Modified MPA Procedure Assuming Higher Modes as Elastic to Estimate Seismic DemandsEarthquake Spectra, 2004
- Identification of Modal Combinations for Nonlinear Static Analysis of Building StructuresComputer-Aided Civil and Infrastructure Engineering, 2004
- Lateral Load Distribution in Nonlinear Static Procedures for Seismic Design2004
- Evaluation of Modal and FEMA Pushover Analyses: SAC BuildingsEarthquake Spectra, 2004
- An upper-bound pushover analysis procedure for estimating the seismic demands of high-rise buildingsEngineering Structures, 2004
- AN ENERGY-BASED FORMULATION FOR FIRST-AND MULTIPLE-MODE NONLINEAR STATIC (PUSHOVER) ANALYSESJournal of Earthquake Engineering, 2004
- An Incremental Response Spectrum Analysis Procedure Based on Inelastic Spectral Displacements for Multi-Mode Seismic Performance EvaluationBulletin of Earthquake Engineering, 2003
- A modal pushover analysis procedure for estimating seismic demands for buildingsEarthquake Engineering & Structural Dynamics, 2001
- Adaptive Spectra‐Based Pushover Procedure for Seismic Evaluation of StructuresEarthquake Spectra, 2000