Abstract
A characteristic element of the new Barcelona Design Centre is the impressive cantilevered hall of 35 m span, 20 m height and 20 m width projecting over Las Glorias Catalanas square. The construction method used in its execution (that is, cantilevered erection in a congested urban environment), the special characteristics of the bolted steel structure and the way it is anchored to the concrete core walls, employing post-tensioning systems and stud shear connectors, transform this building into a very interesting structure in the field of construction. Some of the specific tests carried out to assess the suitability of the bolted joints, primarily developed for the characterization of the friction coefficient used in the design, led to some important conclusions for the design of preloaded bolted connections at ultimate limit state (ULS) to be included in the codes of practice. At the same time, the criteria adopted for the design of post-tensioning and the shear connection system used for anchoring the cantilevered hall to the concrete core of Block 2 are of particular interest.
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