Results 161 to 170 of about 237 (210)

Proposal and application of the Incremental Modal Pushover Analysis (IMPA)

IABSE Reports, 2015
<p>In recent years, many research activities were undertaken to develop a reliable and practical analysis procedure to identify the safety level of existing structures: Incremental Dynamic Analysis (IDA) is considered to be one of the most accurate methods to estimate the seismic demand and capacity of structures.
Bergami, Alessandro Vittorio, Nuti, Camillo, LIU, XU   +2 more
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Developing a method for multi-modal shear-based pushover analysis

Asian Journal of Civil Engineering, 2020
The nonlinear static seismic analysis has become the focus of many research works because of its simplicity compared with dynamic time history analysis. Procedures have been proposed to include the effect of higher modes in pushover analysis. In this study, a combinatory procedure of two independent modal pushover analyses is presented.
Farhad Behnamfar, Behzad Tavakoli
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Estimation of floor response spectra using modified modal pushover analysis

Soil Dynamics and Earthquake Engineering, 2017
Abstract A common approach to designing nonstructural components against seismic excitations involves the use of floor response spectra (FRS). FRS can be accurately computed only through a nonlinear time-history analysis of the structure subjected to a specific earthquake ground motion.
Xiaolan Pan, Zhi Zheng, Zhenyu Wang
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Application of normal flow algorithm in modal adaptive Pushover analysis

Journal of Constructional Steel Research, 2009
Abstract In this paper, a load increment method for Modal Adaptive Pushover Analysis (MAPA) for plane frame buildings is presented. In this method, the Newton–Raphson iterative algorithm is used along the flow path normal to the Davidenko curves with modified convergence rate.
R. Tabatabaei, H. Saffari, M.J. Fadaee
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A new modal pushover analysis approach for soil–structure interaction

Proceedings of the Institution of Civil Engineers - Structures and Buildings, 2015
Soil–structure interaction has been taken into account in performance-based seismic analysis of flexibly supported single-degree-of-freedom systems, but there has been less research for multiple-degrees-of-freedom structures. In a new complex modal pushover analysis developed in this study, the seismic demand for each mode is determined by regular ...
Amir M. Halabian, Mohammad M. Zafarani
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Approximate incremental dynamic analysis using the modal pushover analysis procedure

Earthquake Engineering & Structural Dynamics, 2006
AbstractIncremental dynamic analysis (IDA)—a procedure developed for accurate estimation of seismic demand and capacity of structures—requires non‐linear response history analysis of the structure for an ensemble of ground motions, each scaled to many intensity levels, selected to cover the entire range of structural response—all the way from elastic ...
Sang Whan Han, Anil K. Chopra
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Extension of modal pushover analysis to seismic assessment of bridges

Earthquake Engineering & Structural Dynamics, 2006
Nonlinear static (pushover) analysis has become a popular tool during the last decade for the seismic assessment of buildings. Nevertheless, its main advantage of lower computational cost compared to nonlinear dynamic time-history analysis (THA) is counter-balanced by its inherent restriction to structures wherein the fundamental mode dominates the ...
Paraskeva, T. S., Kappos, A. J., Sextos, A. G.   +2 more
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A modal combination method for multi-modal pushover analysis

2011
One of the major issue related to the multi-modal pushover procedures is the definition of the modal contributions in order to correctly account for the higher modes effects. The modal uncoupling performed with reference to nonlinear systems is not theoretically correct, and the greater is the excursion in inelastic field, the greater will be the ...
POLLIO, BERNARDINO, DIOTALLEVI, PIER PAOLO, LANDI, LUCA   +2 more
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Optimization of modal load pattern for pushover analysis of building structures

Structural Engineering and Mechanics, 2013
Nonlinear Static Procedures (NSPs) have been developed as a practical tool to estimate the seismic demand of structures. Several researches have accomplished to minimize errors of NSPs, namely pushover procedures, in the Nonlinear Time History Analysis (NTHA), as the most exact method.
Mohsen Ali Shayanfar, Mansoor Ashoory, Taha Bakhshpoori, Basir Farhadi   +3 more
openaire   +1 more source

Modified modal pushover analysis of r/c frames

2011
This paper presents the application of modal pushover analysis to earthquake resistance of space reinforced concrete frames. Selection of the modes and their significance have been performed on the basis of usage of group influence lines for the group of section forces which is chosen as critical, what is, in this case, in the basis of the structure ...
Nikolić, Željana, Mihanović, Ante, Trogrlić, Boris   +2 more
openaire   +1 more source