Energy Based Pushover Analysis Of Higher Mode Dominant Structure

  Mohammed GousePasha,  Mohammed Imtiyaz

The storey inertial forces and accelerations at all storeys and shear forces at higher storeys are significantly underestimated by methods which neglect or do not take into account the higher modes even for first mode dominated structures. Tall buildings are more susceptible to be influenced by the effects of higher modes on their response. Several studies suggest that numerous failures or even collapse of buildings were induced by large floor accelerations in which the higher modes were not taken into account. In this study conventional Pushover Analysis (POA) is carried out and since we know that it gives accurate results for structures whose response is controlled by the fundamental mode then there are bound to be anomalies in the higher mode pushover curves in the form of mode reversal. These can be corrected by performing Energy Based Pushover Analysis (EBPOA) as it takes into account the higher modes and then the performance level of the building for that mode in which the reversal took place is also determined

Keywords- Energy based pushover analysis, Higher mode dominant structures, Mode reversal.

Unique Identification Number - IJEDR1904033
Page Number(s) - 185-196
Pubished in - Volume 7 | Issue 4 | October 2019
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Mohammed GousePasha,  Mohammed Imtiyaz,   "Energy Based Pushover Analysis Of Higher Mode Dominant Structure", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.7, Issue 4, pp.185-196, October 2019, Available at :http://www.ijedr.org/papers/IJEDR1904033.pdf