Optimum Positioning of Outriggers in High-Rise Buildings Subjected to Wind Loads

Resumo

Regarding the design of tall buildings, there are two main criteria that are extremely relevant as the
structure height increases: maximum lateral drift (MLD) and core base moment (CBM). The position and number
of outriggers (ORs) throughout the height directly affect both aforementioned criteria. Therefore, knowing the
locations where the structural system under study is most efficient is a way to minimize even more the MLD and
CBM. This work aims to perform a structural optimization of the OR location along the structure height using a
heuristic algorithm in order to find its optimal positions/quantities for each criterion separately. In addition, a
multi-objective optimization is performed with the intention of obtaining the Pareto frontier. Therefore, in order
to achieve this objective, a three-dimensional parameterized numerical model of a tall building will be employed
under the action of the lateral wind loads.