Optimal passive and semi-active control of a wind excited suspension bridge

Herein, a model of an existing suspension bridge is developed at the numerical level in the ANSYS finite element code \nstarting from original data, and it is used (a) to simulate the structural response under strong wind excitation; (b) to \nassess the efficacy for the bridge protection of passive and on/off Skyhook semi-active control laws, here presented in a \nmodified version, with due attention on their feasibility and reliability. Their efficacy is shown and the factors \ncontributing to their positive performance are highlighted. Wind loading, corresponding to the extreme event, derives \nfrom generated 3D turbulent wind fields, non-homogeneous in space to consider the atmospheric boundary layer.