Strength reduction factors (SRFs) are typically used for the performance-based design of structures located in seismic areas. This enables to calibrate their inelastic response to pre-determined ductility levels based on building classification schemes. The standard procedures to estimate SRF’s however ignore the presence of wind, which may lead to non-conservative designs. Previous research has shown that the combined action of wind and earthquakes can considerably magnify strength demands of buildings designed to perform under specific ductility levels. The proposed research is therefore concerned with the estimation of design forces acting on a hybrid steel wind turbine tower located in shore with and without wind actions. It is seen that meaningful combinations of wind and earthquake load can increase the strength demand of hybrid wind turbine structures in up to 50% for the tubular section and up to 81 % across the lattice segment. This raised the ductility demand of those structures from 1 to up to 3 and 6.5 respectively, thus suggesting that the structure is susceptible to undergo inelastic performance when subject to multi-hazard conditions.
|Title of host publication||WINERCOST’18 2nd International Conference on Wind Energy Harvesting, Catanzaro, 21-23 March 2018|
|Publication status||Published - 24 Mar 2018|
|Event||WINERCOST’18 2nd International Conference on Wind Energy Harvesting, Catanzaro - Catanzaro, Italy|
Duration: 21 Mar 2018 → 23 Mar 2018
|Conference||WINERCOST’18 2nd International Conference on Wind Energy Harvesting, Catanzaro|
|Period||21/03/18 → 23/03/18|