SEISMIC ASSESSMENT OF HISTORICAL COMPLEX TOWERS. THE CASE STUDY OF THE GIRALDA TOWER

  1. Romero-Sánchez, Emilio 1
  2. Requena-Garcia-Cruz, María-Victoria 3
  3. Morales-Esteban, Antonio 12
  1. 1 Department of Building Structures and Geotechnical Engineering. University of Seville. Spain
  2. 2 Instituto Universitario de Ciencias de la Construcción. University of Seville. Spain
  3. 3 Department of Mechanical Engineering and Industrial Design. University of Cadiz Spain
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Actas:
Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015)

ISSN: 2623-3347

Año de publicación: 2023

Páginas: 5191-5201

Tipo: Aportación congreso

DOI: 10.7712/120123.10793.20092 GOOGLE SCHOLAR lock_openAcceso abierto editor

Resumen

The Giralda tower of Seville is an ancient complex tower. It is composed of an inner and an outer wall connected by an ascending ramp that varies with its height. The ascending rampmakes every façade be different in height and composition. Also, the unreinforced masonryvaries and it has some parts made of stone. Moreover, the western façade partly connectswith the cathedral and the southern area. It reaches a total height of 95 m and it is one of themost ancient buildings in Seville. It was listed as a World Heritage Site by the UNESCO in1987 with the maximum level of protection: Outstanding Universal Value. The tower is located in a seismically-prone area and it is known to have been severely damaged during pasthistoric earthquakes. Therefore, a complete and adequate seismic analysis of its seismic behaviour is mandatory. This work has focused on a refined analysis of its seismic performanceto provide reliable results. A detailed 3D architectural model of the monument has been created in the Rhinoceros software. The seismic assessment has been carried out following theFinite Element Method (FEM) with the OpenSees software. This approach is based on a numerical procedure grounded on the use of nonlinear static analysis. Equivalent boundaryconditions have been introduced to assess the interaction among the different parts of thetower with the cathedral. To minimise the uncertainties in complex masonry buildings and tocalibrate the numerical model in situ experimental tests have been carried out. Finally, different horizontal load patterns have been considered in the analyses to assess its seismic behaviour.