Title: Punching of flat slabs under reversed horizontal cyclic loading
Author(s): António Ramos, Rui Marreiros, André Almeida, Brisid Isufi, Micael Inácio
Publication: Symposium Paper
Appears on pages(s): 253-272
Keywords: Drift, flat slabs, gravity shear ratio, horizontal cyclic loading, performance based design, punching
Flat slab structures are a very common structural solution nowadays, due to their architectural and economic advantages. However, flat slab-column connections may be vulnerable to punching failure, especially in the event of an earthquake, with potentially high human and economic losses. This type of structural solution is adequately covered by design codes and recommendations in North America, due to the large amount of experimental research that has been carried out. In Europe, the situation is different: specific guidance to flat slab design under earthquake action is missing from most European codes. The ACI 318-14 prescriptive approach to the gravity shear ratio-drift ratio relationship shows good agreement with experimental results. Following a similar approach and, based on a databank containing cyclic horizontally loaded tests of slab-column connections found in the literature, proposals are made that are applicable to Eurocode 2 and the fib Model Code 2010.