1. Assistant Professor, Dept. of Mechanical Engineering and Construction, Univ. Jaume I, Avda Sos Baynat s/n, 12071 Castellón, Spain (corresponding author).
2. Associate Professor, Dept. of Structural Mechanics and Hydraulic Engineering, Universidad de Granada, Campus Univ. de Fuentenueva, 18071 Granada, Spain.
3. Associate Professor, Dept. of Continuum Mechanics and Theory of Structures, Univ. Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; Fundación Caminos de Hierro para la Investigación y la Ingeniería Ferroviaria, C/Serrano 160, 28002 Madrid, Spain.