Practical implementation of generalized pushover analysis for multimodal pushover analysis

Date

2015-08-29

Author

Alıcı, Fırat Soner
Sucuoğlu, Haluk

Metadata

Show full item record

Item Usage Stats

194
views

0
downloads

A generalized pushover analysis procedure was previously developed for estimating the inelastic seismic response of structures under earthquake ground excitations. The procedure consists of applying different generalized force vectors separately for each story to the structure in an incremental form with increasing amplitude, until an estimated target interstory drift demand is obtained. A generalized force vector is expressed as a combination of modal forces, and simulates the instantaneous force distribution acting on the system when the interstory drift at a given story reaches its maximum value during dynamic response to a seismic excitation. Each nonlinear static analysis under a generalized force vector activates all modes of a multi degree of freedom system, simultaneously. Correspondingly, inelastic actions develop in members with the contribution of all instantaneous modes in the nonlinear response range. A practical implementation of the proposed generalized pushover analysis is presented in this study. The method is applied to a 12 story frame and a 20 story frame-wall system, and the results are obtained under six spectrum-compatible ground motions. First, it has been demonstrated that generalized pushover analysis is successful in estimating maximum member deformations and exact in determining member forces under a ground excitation with reference to nonlinear response history analysis. Then, it is shown that the results obtained from generalized pushover analysis by using the mean spectrum of six ground motions are almost identical to the mean of the results obtained from separate generalized pushover analyses under six ground motions. Moreover, these mean results are very close to the mean of the results obtained from six nonlinear response history analyses.

URI

https://hdl.handle.net/11511/76879

Collections

Department of Civil Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Multi-Mode Pushover Analysis with Generalized Force Vectors Sucuoğlu, Haluk (2009-07-01) A generalized pushover analysis procedure is developed for estimating the inelastic seismic response of structures under earthquake ground excitations. The procedure comprises applying a generalized force vector to the structure in an incremental form with increasing amplitude until a prescribed seismic demand is attained. A generalized force vector is expressed as a combination of modal forces, and simulates the instantaneous force distribution acting on the system when a given interstory drift reaches its...
Generalized force vectors for multi-mode pushover analysis of torsionally coupled systems Kaatsız, Kaan; Sucuoğlu, Haluk (Wiley, 2014-10-25) A generalized multi-mode pushover analysis procedure was developed for estimating the maximum inelastic seismic response of symmetrical plan structures under earthquake ground excitations. Pushover analyses are conducted with story-specific generalized force vectors in this procedure, with contributions from all effective modes. Generalized pushover analysis procedure is extended to three-dimensional torsionally coupled systems in the presented study. Generalized force distributions are expressed as the com...
Analysis Methods for the Investigation of the Seismic Response of Concrete Dams Aldemir, Alper; Yilmazturk, Sema Melek; Yucel, Ali Riza; Binici, Barış; Arıcı, Yalın; Akman, Altug (2015-01-01) The consideratiOn of the dam-foundation-reservoir interaction is extremely important for estimating the seismic response of concrete gravity dams. Moreover, nonlinear analysis may be required for determining the possible risk associated with dams. In order to address these issues, DSI recently published the "Guidelines for Seismic Design of Concrete Dams". Authors who have contributed to the preparation of this document provide a perspective on the seismic safety/design of concrete dams and structural analy...
Linear modal combination procedure for structural dynamics Tanışer, Sadun; Sucuoğlu, Haluk; Department of Civil Engineering (2013) Earthquake engineering practice utilizes different analysis procedures in the estimation of seismic demands on structures. These procedures are mainly divided into two groups as static and dynamic procedures. Dynamic procedures are more accurate than the static procedures since they include the entire history of any response parameter during the ground motion. Nevertheless, there are also approximate but much simpler static analysis procedures that overcome high computational demands and inherent difficulti...
Spatial sensitivity of seismic hazard results to different background seismic activity and temporal earthquake occurrence models Yilmaz, Nazan; Yücemen, Mehmet Semih (Elsevier BV, 2011-07-01) Spatial sensitivity of seismic hazard results to different models with respect to background seismic activity and earthquake occurrence in time is investigated. For the contribution of background seismic activity to seismic hazard, background area source with uniform seismicity and spatially smoothed seismicity models are taken into consideration. For the contribution of faults, through characteristic earthquakes, both the memoryless Poisson and the time dependent renewal models are utilized. A case study, ...

Citation Formats

F. S. Alıcı and H. Sucuoğlu, “Practical implementation of generalized pushover analysis for multimodal pushover analysis,” 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/76879.