Modelling the load-deformation behaviour of lap splices with the Tension Chord Model

Lap splices are part of virtually every structure made reinforced concrete. As loads need to be transferred safely along these discontinuities, numerous studies focused on their strength. However, even though they traditionally placed also in highly loaded regions elements, which potentially undergoing plastic deformations, little attention has been paid load-deformation behaviour and deformation capacity. This study presents a sound mechanical model based the established Tension Chord Model assess lap splices. A thorough analysis load transfer mechanism reveals that major is at beginning end splice. Therefore, splice acts as double tensile element over considerable length, drastically reduces its capacity less than half minimum value expected for adjacent parts. especially needs addressed performance-based design methods, where demand compared existing The theoretical results validated with recently conducted experimental campaign, exhibiting excellent agreement data. Besides comprehensive influencing parameters, simplified modelling approach practical applications recommendations new structures presented this publication.