Abstract
Flat Plate structures are categorized as an economical structural systems for medium height and office buildings. However, punching shear failure causes brittle and sudden damage to flat slab-column connections and hence it’s significant should not be underestimated in the design of such connections. Punching shear can occur due to the transfer of shear forces combined with unbalanced moments between slabs and columns. Punching shear is an undesirable mode of failure that occurs without warning and can lead to progressive collapse of large areas of slab or even complete structure. Partial collapse of department store - 1994 Northridge earthquake is a sever example of the failure. The aim of this work is to assess the provisions provided by ACI 318-08 (ACI Committee 318, 2008) and ACI 421.2R-10 (Joint ACI-ASCE Committee 421, 2010) for interior slab-column connections. For this purpose a database for slabs without shear reinforcement and with shear reinforcement was developed. The existing drift capacity model of the slab-column connections was also re-examined based on the developed data base and available shear strength degrading models. A revised model based on slab span-to-thickness ratios was suggested to assess the requirement of shear reinforcement.
| Original language | English |
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| Publication status | Published - May 2015 |
| Event | International Conference on Earthquake Engineering and Seismology 2015 - Kiel, Copenhagen, Oslo, Goteborg Duration: 12 May 2015 → 16 May 2015 |
Conference
| Conference | International Conference on Earthquake Engineering and Seismology 2015 |
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| Abbreviated title | IZIIS-50 |
| Period | 12/05/15 → 16/05/15 |
Keywords
- Punching shear failure
- ACI provisions
- Data base
- Drift capacity