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modal pushover-based scaling method

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Journal Article
Published: 01 November 2012
Earthquake Spectra (2012) 28 (4): 1469–1493.
... be accurate (unbiased) and efficient (having relatively small dispersion). This paper evaluates accuracy and efficiency of recently developed modal pushoverbased scaling (MPS) method to scale ground motions for tall buildings. The procedure presented explicitly considers structural strength and is based...
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Journal Article
Published: 01 May 2014
Earthquake Spectra (2014) 30 (2): 767–794.
... rule). Story shear and overturning moment distributions at low scale factors will also resemble those obtained with modal pushover analysis. Of course, at high scale factors, these force-related quantities will be significantly overestimated by the elastic method. These results suggest...
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Journal Article
Published: 01 November 2014
Earthquake Spectra (2014) 30 (4): 1601–1618.
... as an essential tool in this new method called drift pushover analysis . In order to evaluate the behavior of structures, three demand parameters—lateral displacement, story shear, and plastic hinge rotation—are computed with conventional pushover analysis (CPA), modal pushover analysis (MPA), and drift pushover...
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Journal Article
Published: 01 November 2008
Earthquake Spectra (2008) 24 (4): 827–845.
... 4 is the nth-mode component of effective earthquake forces. In the MPA procedure, the peak response of the building to peff,n t or the peak modal demand rn is determined by a nonlinear static or pushover analysis using the modal force distribution s n *=m n (based on the second part of Equation...
Journal Article
Published: 01 November 2015
Earthquake Spectra (2015) 31 (4): 1949–1968.
.../SEI 41-06 coefficient method, Analyt.M3-EqSDOF: Pushover analysis option with the modified IMK component model (ATC-72 analysis option 3) and the target displacement option is based on the median target drift obtained from equivalent SDOF analysis without cyclic deterioration in strength...
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Journal Article
Published: 01 May 2015
Earthquake Spectra (2015) 31 (2): 1043–1067.
... pushover procedure is based on an effective force vector, f j , acting on the system when the interstory drift Δ j at the j th story reaches its maximum value during dynamic response. This is a generalized force vector since it includes contributions from all modal forces at the time of maximum...
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Journal Article
Published: 01 February 2009
Earthquake Spectra (2009) 25 (1): 143–159.
... on large-scale models (Casarotti and Pinho 2006). The same software package was employed in the running of the force-based conventional pushovers (used in CSM, N2, and MPA methods) and of the displacement-based adaptive pushover analyses (Antoniou and Pinho 2004) that are required by the ACSM procedure...
Journal Article
Published: 01 November 2013
Earthquake Spectra (2013) 29 (4): 1459–1476.
... nonlinear dynamic analysis, especially within the realm of design office application. Parametric comparisons between the different NSPs available, however, are still somewhat sparse. In this work, five commonly employed NSPs (the N2 method, capacity spectrum method, modal pushover analysis, adaptive modal...
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Journal Article
Published: 01 November 2019
Earthquake Spectra (2019) 35 (4): 1541–1558.
...Alexander Kagermanov; Robin Gee A new method for the seismic performance assessment of structures subjected to a sequence of earthquakes is presented. The method is based on the cyclic pushover analysis of a multi-degree-of-freedom (MDOF) structure. Instead of relying on a single value of target...
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Journal Article
Published: 01 February 2004
Earthquake Spectra (2004) 20 (1): 255–271.
..., and Chatpan Chintanapakdeeb) [DOI: 10.1193/1.1647580] INTRODUCTION The accuracy of the nonlinear static procedure (NSP) using the lateral force distri- butions specified in the FEMA-356 document (ASCE 2000), now standard in engineer- ing practice, and the recently developed dynamics-based modal pushover...
Journal Article
Published: 01 August 2012
Earthquake Spectra (2012) 28 (3): 1243–1267.
...Juan C. Reyes; Anil K. Chopra, M. EERI The modal-pushover-based-scaling (MPS) procedure, currently restricted to scale one component of ground motion records, is extended herein to scale two horizontal components. The accuracy and efficiency of the MPS procedure is evaluated here by applying...
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Journal Article
Published: 01 November 2005
Earthquake Spectra (2005) 21 (4): 1027–1041.
... in the preceding paragraph can be explained based on elementary structural dynamics and plastic structural analysis. Recall that the modal pushover curve is developed by static analysis of the building for height-wise dis- tribution of forces: sn= fm n in which m is the mass matrix, n is the nth natural vi...
Journal Article
Published: 01 May 2016
Earthquake Spectra (2016) 32 (2): 653–676.
... and associated mode shape of the index model are calculated from a modal analysis and used to calculate the vertical distribution of forces for the pushover analysis and the period based ductility, μ T . The values from the static pushover analysis are used to calculate the overstrength factor, Ω...
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Journal Article
Published: 01 May 2003
Earthquake Spectra (2003) 19 (2): 365–384.
... to develop earthquake damage and related loss functions for welded steel moment-frame (WSMF) buildings. The damage and loss func- tions are based on and compatible with the loss estimation methods of HAZUS, a technology developed by Federal Emergency Management Agency (FEMA) for assessing regional impacts...
Journal Article
Published: 01 August 2012
Earthquake Spectra (2012) 28 (3): 1223–1242.
... SDOF system are more appropriate ( Luco and Cornell, 2007 ; Tothong and Cornell, 2008 ; PEER, 2009 ). Kalkan and Chopra (2010 , 2011 , 2012) used these concepts to develop a modal pushover-based scaling (MPS) procedure for selecting and scaling earthquake ground motion records in a form...
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Journal Article
Published: 01 August 2015
Earthquake Spectra (2015) 31 (3): 1493–1514.
... and requires only elastic modal analysis, making it particularly fit for traditional design purposes. The second method is based on structural dynamics closed-form solutions, and it does not require finite element method (FEM) analysis, making it particularly fit for simplified capacity design purposes...
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Journal Article
Published: 01 August 2018
Earthquake Spectra (2018) 34 (3): 1311–1338.
.... and Billington S. L. 2003 . Influence of hysteretic behavior on equivalent period and damping of structural systems , ASCE Journal of Structural Engineering 129 ( 5 ), 576 – 585 . Ling C. 2014 . Fragility analysis of SDOF based on pushover method , Ph.D. Thesis, Dalian...
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Journal Article
Published: 01 November 2016
Earthquake Spectra (2016) 32 (4): 2271–2289.
.... When the combined modal base shear ( V t ) is less than 85% of the base shear ( V ) calculated using the equivalent lateral force procedure, forces obtained from the SRSS method are multiplied by 0.85 V / V t . Since model buildings are symmetric in plan, the inherent torsional moment ( M...
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Journal Article
Published: 01 May 2018
Earthquake Spectra (2018) 34 (2): 441–458.
..., if modal spectral analysis is used, this code has a higher minimum base shear requirement than the Ecuadorian and U.S. codes. Despite their high level of similarity, NEC-2015 does not require orthogonality effects; therefore, it could be expected that this code will have the smallest seismic design forces...
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Journal Article
Published: 01 November 2016
Earthquake Spectra (2016) 32 (4): 2229–2244.
... by removing damping force, considered as equivalent viscous damping, from the inertial response, using a proposed viscous damping identification procedure. The method is demonstrated using data from a small-scale, three-story experimental model subjected to strong base motion. 27 12 2014 31 1 2016...
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