PUNCHING SHEAR SYSTEMS FOR FLAT SLABS - EVALUATION OF TESTS AND COMPARISON WITH CODES

摘要

Over the last 20 years the Institute of Structural Concrete at RWTH Aachen University has conducted numerous punching tests on interior slab-column connections with different types of punching shear reinforcement. Within the tests, different types and arrangements of stirrups, lattice girders, and double-headed studs were used as punching shear reinforcement. In this paper, the efficiency of the various types of punching shear reinforcement is studied and discussed based on the experimental results of 39 tests on interior slab-column connections. By comparing the failure loads with the punching shear capacities without shear reinforcement according to ACI 318-14 and Eurocode 2 along with the German Annex, respectively, the increase in punching shear resistance with each shear reinforcement system is investigated.