ANALYSIS OF CRITICAL SITUATION IN THE DYNAMIC AND SEISMIC STRUCTURAL RESPONSE OF CANTILEVER BRIDGES. DDBD AND ENERGY BALANCE - Carlos Iturregui Arranz; Ander Atorrasagasti Villar; NGUYEN, GIA KHANH; SORIA HERRERA, JOSE MANUEL; GARCIA PALACIOS, JAIME; MUÑOZ DIAZ, IVAN (Proceedings Of The 1st. Conference On Structural Dynamics, 2018)