The anchor plate in steel with headed studs is a typical constructional solution for load-bearing elements at the intersection between steel and concrete in high-rise- as well as multi-storey-buildings. Technical approvals are the basis for the design of headed studs for anchor plates. Small edge distances lead to great decrease of the allowable forces due to the higher possibility of local concrete cone or edge failure. Tests on the positive effects of reinforcement in constructions with small edge distances such as columns and wall edges show that the design solutions still can be improved and optimized. This thesis wants to give a contribution to the load-bearing capacity and the design of anchor plates in very narrow reinforced concrete columns. It is meant especially for anchor plates under eccentric shear load with large internal lever arm between the headed studs. Information will be given on results of 15 tests with different topologies of anchor plates and concrete structures. Explored are the ultimate forces in correlation with load eccentricity, reinforcement amount and position, concrete type and failure type. The influence of the following parameters has been observed: - concrete compression strength - position and degree of stirrup reinforcement - position and degree of bending reinforcement - stud length Comparisons to allowable characteristic load bearing capacities according to the current technical approvals show the ultimate test forces can be 15 to 18 times higher for the tested anchor plate and column dimensions. A mechanical model for the load flux between anchor plate and concrete is set up which includes the use of stirrups and bending reinforcement of the column. A design solution to obtain high load-bearing capacity for a given construction or load is derived, based on the tests and the mechanical model. The detail "headed stud in concrete" under shear and tension forces is checked with proof of shear force according to Eurocode 4 and anchorage of full tension force via stirrups. An interaction proof for the headed studs under combined shear and tension forces is derived from the tests. Resistances against the observed concrete failure types are given. The load in the column and its reinforcement is calculated using a strut-and-tie model and checked according to Eurocode 2. Considerations about a simplified design concept are made to obtain always ultimate load by steel failure of the headed studs.weiterlesen