- Inelastic Seismic Response of Reinforced Concrete Buildings with Symmetric and Unsymmetric Floor Diaphragm Openings
- M.T. Al Harash ; N. Panahshahi
- Book Title / Journal: 15th World Conference on Earthquake Engineering
- Year: 2012 , Volume: , Series:
- Earthquake engineering
- Keywords: inelastic response ; concrete buildings
- Description
- Floor and roof diaphragms play a key role in distributing earthquake-induced loads to the lateral load resisting systems. The in-plane flexibility of the diaphragms was often ignored for simplicity in practical design, until recently where building standards such as ASCE7 (2005) acknowledged that this assumption can result in considerable errors when predicting the seismic response of RC buildings with diaphragm plan aspect ratio greater than 3:1. However, the influence of floor diaphragm openings has not been directly considered. In this paper, the inelastic seismic response of five 3-story reinforced concrete buildings with end shear walls and plan
aspect ratio of 4:1 with symmetric and unsymmetric floor openings within the middle two-thirds of the building using an enhanced version of IDARC2 are presented. It is concluded that the influence of “inelastic” in-plane diaphragm deformations due to floor openings may not be overlooked when openings are present irrespective of where they are located.
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