Story shear and torsional moment-based pushover procedure for asymmetric-plan buildings using an adaptive capacity spectrum method

2014 ◽  
Vol 79 ◽  
pp. 32-44 ◽  
Author(s):  
Karim Tarbali ◽  
Kazem Shakeri
Keyword(s):  
Adaptive Capacity ◽  
Torsional Moment ◽  
Capacity Spectrum Method ◽  
Spectrum Method ◽  
Capacity Spectrum

Evaluation of Nonlinear Static Procedures in the Assessment of Building Frames

2013 ◽  
Vol 29 (4) ◽  
pp. 1459-1476 ◽  
Author(s):  
Rui Pinho ◽  
Mário Marques ◽  
Ricardo Monteiro ◽  
Chiara Casarotti ◽  
Raimundo Delgado
Keyword(s):  
Dynamic Analysis ◽  
Adaptive Capacity ◽  
Nonlinear Dynamic ◽  
Pushover Analysis ◽  
Nonlinear Dynamic Analysis ◽  
Capacity Spectrum Method ◽  
Modal Pushover Analysis ◽  
Spectrum Method ◽  
Capacity Spectrum ◽  
Nonlinear Static

In recent years a number of nonlinear static procedures (NSPs) have been developed and proposed. Such pushover-based seismic assessment procedures are relatively straightforward to employ and are generally chosen over 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 combination procedure, and the adaptive capacity spectrum method) are applied in the assessment of 16 frames subjected to a large number of input motions with a view to assess the accuracy level of such approaches through comparison with nonlinear dynamic analysis results. The evaluation shows that all the NSPs are able to accurately predict displacements and to produce reasonable estimates for other response parameters, with limited dispersion. Even though no single NSP tested led to consistently superior results, modal pushover analysis and the adaptive capacity spectrum method seemed to perform slightly better.

The Extended Adaptive Capacity Spectrum Method for the Seismic Assessment of Plan-Asymmetric Buildings

2014 ◽  
Vol 30 (2) ◽  
pp. 683-703 ◽  
Author(s):  
Carlos Bhatt ◽  
Rita Bento
Keyword(s):  
Adaptive Capacity ◽  
Three Dimensional ◽  
Seismic Assessment ◽  
Capacity Spectrum Method ◽  
Existing Structures ◽  
Asymmetric Structures ◽  
Asymmetric Buildings ◽  
Spectrum Method ◽  
Capacity Spectrum ◽  
N2 Method

The use of nonlinear static procedures (NSPs) on the seismic assessment of real existing plan-irregular structures has so far been studied by a limited number of authors. This fact limits the application of such methods to assess current existing structures, the majority of which are irregular in plan. An extended version of the adaptive capacity spectrum method (ACSM) for the seismic assessment of plan-irregular buildings is presented in this paper. The novelty of this proposal is to comprise the most accurate features of commonly used NSPs in order to overcome the problems that subsist in three-dimensional pushover analyses. The accuracy of the procedure is tested in three plan-irregular real buildings. The results are compared with the capacity spectrum method (CSM) with the features proposed in FEMA 440, with the extended N2 method for plan-asymmetric structures, with the adaptive capacity spectrum method (ACSM) and with the most exact nonlinear dynamic analyses. Several seismic intensities are tested, in order to evaluate the performance of the procedure in different stages of structural inelasticity.

scholarly journals DESING SPECTRUMS FOR THE CENTRAL NORTH OF QUI-TO AND SEISMIC ANALYSIS OF STEEL STRUCTURES USING THE CAPACITY SPECTRUM METHOD.

2014 ◽  
Vol 12 (3) ◽  
Author(s):  
Roberto Rodrigo Aguiar
Keyword(s):  
High School ◽  
Steel Structures ◽  
Capacity Spectrum Method ◽  
North Central ◽  
Seismic Microzoning ◽  
Spectrum Method ◽  
Performance Point ◽  
Capacity Spectrum ◽  
Elastic Response Spectra ◽  
The City

The city of Quito lies on geological faults that have no surface outcrop but are moving with a speed of 2-4 mm per year. The last strong earthquake associated with these thrust faults, was rec-orded in 1587 and had a magnitude of 6.4; so it has been more than 400 years, there is a large amount of stored energy, and the probability of an earthquake occurring is very high. Therefore, this article presents, firstly, the periods of recurrence of these faults; then a microzoning of the north central part of the city and the elastic response spectra for 5% damped associated to the Llumbisi- La Bota segment fault, ILB. And subsequently, an analysis of nine steel structures from one to nine storeys assuming that they are situated in the following three areas of north central Quito: the old Quito Tenis; La Gasca and Benalcazar High School. Using the Capacity Spectrum Method MEC, the seismic response is found with the presence of three spectrums as prescribed in the Ecuadorian Construction Regula-tions NEC-11; the recommendation in the study of the seismic microzoning of Quito ERN-12 and those found in the seismic microzoning associated with the fault ILB. Three types of responses are indicated for each location, the structures situated in the old Quito Tenis present a performance point found using the Capacity Spectrum Method MEC; for those in La Gasca, a maximum lateral displacement is indicated in each storey; and the structures situated in the Benalcazar High School present maximum interstorey drifts. It should be highlighted that the lateral displacements and interstorey drifts are reaching the end of their performance, thus the conclusions to be found in this study about which spectrum the maximum response has could be inferred from any of the three structural parameters.

A mathematical basis for the convergence of the capacity spectrum method

2004 ◽  
Vol 33 (9) ◽  
pp. 1059-1066 ◽  
Author(s):  
Yu-Yuan Lin ◽  
Tsai-Fu Chuang ◽  
Kuo-Chung Chang
Keyword(s):  
Capacity Spectrum Method ◽  
Mathematical Basis ◽  
Spectrum Method ◽  
Capacity Spectrum

Development and application of an advanced capacity spectrum method

2008 ◽  
Vol 30 (11) ◽  
pp. 3345-3354 ◽  
Author(s):  
Bora Gencturk ◽  
Amr S. Elnashai
Keyword(s):  
Capacity Spectrum Method ◽  
Spectrum Method ◽  
Capacity Spectrum

EVALUATION OF CAPACITY SPECTRUM METHOD FOR ESTIMATING THE PEAK INELASTIC RESPONSES

2005 ◽  
Vol 9 (5) ◽  
pp. 695-718 ◽  
Author(s):  
HONGJIN KIM ◽  
KYUNG-WON MIN ◽  
LAN CHUNG ◽  
MINKYU PARK ◽  
SANG-HYUN LEE
Keyword(s):  
Capacity Spectrum Method ◽  
Spectrum Method ◽  
Capacity Spectrum ◽  
Inelastic Responses

An approach of seismic design for sheet pile retaining wall based on capacity spectrum method

2016 ◽  
Vol 11 (2) ◽  
pp. 309-323 ◽  
Author(s):  
Honglue Qu ◽  
Ruifeng Li ◽  
Huanguo Hu ◽  
Hongyu Jia ◽  
Jianjing Zhang
Keyword(s):  
Seismic Design ◽  
Retaining Wall ◽  
Sheet Pile ◽  
Capacity Spectrum Method ◽  
Spectrum Method ◽  
Capacity Spectrum
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