Dr. Eng. Ahmed Elyamani
Associate Professor of Architectural and Structural Conservation of Historical Structures and Sites
Cairo University, Faculty of Archaeology, Archaeological Conservation Dept. (email)
Assessment of Dynamic Behavior of Mallorca Cathedral
- Citation:
- Elyamani, A., J. O. Caselles, J. Clapes, and P. Roca, "Assessment of Dynamic Behavior of Mallorca Cathedral", 8th International Conference of Structural Analysis of Historical Construction, Wroclaw, Poland, 15-17 Oct. 2012.
Date Presented:
15-17 Oct. 2012Abstract:
The paper presents the application of continuous dynamic monitoring and thermographic monitoring to the study of Mallorca Cathedral, one of the largest medieval structures built in Europe. The dynamic monitoring has been carried out by means of a network of three strong motion tri-axial accelerometers installed in December 2010. This network has allowed the capture of seven seismic events characterized by different epicenter locations and frequency contents. The post-processing of the information recorded during these events has provided significant insight on the cathedral dynamic response. The paper also presents the post processing of raw data of nine months of continuous dynamic monitoring, allowing the characterization of the effect of temperature changes on the natural frequencies of different mode shapes. A complementary study undertaken by thermographic monitoring, in which a part of the cathedral has been monitored for at least two weeks in summer and also in winter using an IR camera, is also presented. The relation between the stone masonry temperature of different structural elements (columns, vaults, arches, walls) and natural frequencies has been investigated. This study is part of a more detailed research, still in progress, aimed at investigating the seismic behavior and vulnerability of Mallorca Cathedral.