Enhancing Seismic Performance of Historical Adobe Buildings (Case Study: a Dovecote in Velashan village of Isfahan)

Document Type : Research Article

Authors

1 Master's Degree in Restoration and Restoration of Historical Buildings Department of Restoration and Restoration of Historical Buildings, Faculty of Conservation and Restoration, Iran University of Art

2 Associate Professor, Department of Restoration and Restoration of Historical Buildings, Faculty of Conservation and Restoration, Iran University of Art

3 Doctoral student of Restoration and Restoration of Historical Buildings, Department of Restoration and Restoration of Historical Buildings, Faculty of Conservation and Restoration, Iran University of Art.

10.22034/ahdc.2025.22404.1842

Abstract

For many years, adobe structures have been considered a common model in the history of Iranian architecture. To the extent that nowadays a significant part of these buildings are considered as an important type of Iranian architectural heritage worthy of protection. One of the serious challenges of such buildings is protecting them against natural hazards, especially about earthquakes. Up to now, more has been done to improve the seismic performance of human-inhabited adobe buildings compared to other types of such buildings. For this reason, the current research aims at the seismic strengthening of pigeon houses as an adobe heritage in the agricultural domain, focusing on the Amini Velashan pigeon house. The seismic evaluation was conducted under the influence of four different earthquakes.



In terms of its purpose, the research is considered a type of applied research. The data required for the research was obtained through library and field studies, and the strategy relied on is inductive. Also, data analysis has been done based on computer modeling and descriptive-analytical methods. After the study of the available documents about the history and architecture of the pigeon towers and the local techniques and materials used in the construction, pathology has been done. Based on the principles of conservation and restoration, a retrofitting plan was proposed, and a method for strengthening the clay dovecote with a cylindrical shape was proposed using seismic modeling in Abaqus software.



The current research has tried to provide an intervention solution based on software data analysis, identification of seismic behavior, failure points as well as existing documentation and pathology. The results indicate the weak performance of the existing structure in future earthquakes and similar damages in case of restoration without retrofitting. In the model without horizontal wooden beams, the structure cannot be stable against earthquakes. In the model with horizontal beams at a height of two-thirds of the ground surface, the stress and displacement changes improved in some seconds, although the structure is not in good condition and will not be stable against future earthquakes. It seems that by adding horizontal beams at a higher height and also vertical beams on the outer shell, seismic stability can be increased.

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References

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Journal of Architecture in Hot and Dry Climate
Volume 12, Issue 19
August 2024
Pages 199-224

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