Ελληνικά 

Reinforced interfaces between structural members in ancient monuments ΙΑΜΟΝ

Research Responsible: Charalambos Mouzakis, Vasiliki Palieraki

Principal Investigator: Vasiliki Palieraki

The aim of the proposed work is to investigate the effect of interfaces, reinforced using vertical connectors (gomfoi) on the seismic behaviour of ancient monuments. The research focuses on the seismic behaviour of columns and colonnades, where the interfaces between drums are crossed by shear connectors. The proposed work is meant to contribute to a thorough understanding of the observed behaviour and, consequently, to the restoration of monuments of Classical and Roman antiquity. Iron connectors of orthogonal parallelepiped shape (gomfoi) were known to connect mainly horizontal members (beams). However, investigations at Thrasyllos monument (Athens), as well as recent restoration works at the Athens Olympieion (Figure 1), have revealed an arrangement of vertical connectors between consecutive drums of columns, suggesting that it was intended to improve the behaviour of the columns against seismic actions in any direction. The research approach is based on scaled shaking table tests, as well as on modelling of the interfaces and entire columns and subassemblies, with the purpose of reaching reliable experimental results, calibrated numerical models and rational simplifications, adequate describing the behaviour of the studied structures. The proposed work is innovative as it will provide the first in the world experimental evidence (through shaking table tests) on the contribution of vertical connectors on the seismic behaviour of columns and colonnades. This work will be paired with numerical work, which will account for the vertical connectors, based on calibrated experimental results. The use of vertical connectors between the drums of ancient columns offers a possibility for improvement of the seismic behaviour of the restored monument, by adopting a technique invented and applied in ancient monuments, a non-invasive intervention, fully compatible with the Principles of Restoration.

 

Figure 1: Arrangement of vertical connectors between consecutive drums (sketch by E. Tavouktsi)