Eurocode 2 and the corresponding National Annex were introduced in Germany in 2012. Most of the design provisions for these new standards were adopted from Model Code 1990 and provide a new design approach for ground slabs and footings. For the fib Model Code for Concrete Structures 2010, the punching shear design concept has been revised and introduced in Swiss standard SIA262:2013. This paper presents in detail the design equations for determining the punching capacity according to Eurocode 2, the German National Annex to Eurocode 2, fib Model Code 2010 and SIA 262:2013.
Parametric studies have been used to examine the influence of the main parameters (shear span‐depth ratio, effective depth, longitudinal reinforcement ratio and concrete compressive strength) on the punching shear resistance of footings. To quantify the level of safety and the efficiency, the design provisions are compared with systematic test series.
Das Tragverhalten von speziellen Gitterträgern als Durchstanzbewehrung wurde in Bauteilversuchen an 18 cm bis 36 cm dicken teilvorgefertigten Stahlbetonplatten mit horizontaler Verbundfuge untersucht. Variiert wurde unter anderem auch die Anordnung der vorgefertigten Platten. Die ermittelten Durchstanzwiderstände und das beobachtete Tragverhalten bestätigen die Effektivität dieser Bewehrungselemente. Die Versuche führten zur Erteilung einer europäischen technischen Zulassung (ETA) auf der Bemessungsgrundlage von Eurocode 2.Punching shear reinforcement for semi precast slabs according to Eurocode 2The load bearing behaviour of special lattice girders functioning as punching shear reinforcement has been tested in full scale tests with 18 cm up to 36 cm thick semi precast slabs with horizontal composite joints. Varied was among other parameter also the arrangement of the precast plates. The determined punching shear resistance and the load bearing behaviour confirmed the effectiveness of this reinforcement. These tests had led to an European Technical Approval (ETA) based on Eurocode 2.
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