Publication
Structural analysis of the masonry envelope of Ica Cathedral, Peru
| Summary: | Built in 1759, the Ica Cathedral is one of the four prototype buildings considered as a part of the Seismic Retrofitting Project (SRP) initiative of the Getty Conservation Institute. Under this project, the Ica Cathedral is considered representative of religious buildings built in coastal cities with a structural system consisting of thick mud brick walls and quincha vaults and domes. The Cathedral was also declared as a national monument of Peru in 1982.The Ica Cathedral currently exists in a state of disuse and in a heavily damaged state as a result of the 2007 Pisco earthquake and another subsequent earthquake in 2009. This thesis primarily addresses the structural analysis of the masonry envelope of the Ica Cathedral. Based on existing information, a 3D model of the walls, base courses and bell towers of the structure was constructed. Consequently this model was used for creating a FE model in Midas FX+ for DIANA software in order to investigate various hypothesis of structural damage. A review of the results of the experimental campaign carried out under the banner of the SRP and existing literature was performed in order to input material properties into the numerical model. The created FE model was then updated in terms of material properties on the basis of ambient vibration tests performed on the cathedral recently. The nonlinear behaviour of the structure was investigated in the light of various static and dynamic simulations. Additionally the validated numerical model was also used to evaluate the effectiveness of a proposed strengthening scheme. The present work was able to produce a numerical model validated in terms of existing damage. It was also able to make assesments of the seismic capacity of the cathedral and the effectiveness of the proposed strengthening in this regard. Nevertheless, further numerical modelling, including a combined model of the timber and masonry structures and subsequent structural analysis needs to performed in order to have a more conclusive assessment on the behaviour of Ica Cathedral. |
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| Main Authors: | Sharma, Satyadhrik |
| Subject: | Engenharia e Tecnologia::Engenharia Civil |
| Year: | 2015 |
| Country: | Portugal |
| Document type: | master thesis |
| Access type: | open access |
| Associated institution: | Universidade do Minho |
| Language: | English |
| Origin: | RepositóriUM - Universidade do Minho |
| Summary: | Built in 1759, the Ica Cathedral is one of the four prototype buildings considered as a part of the Seismic Retrofitting Project (SRP) initiative of the Getty Conservation Institute. Under this project, the Ica Cathedral is considered representative of religious buildings built in coastal cities with a structural system consisting of thick mud brick walls and quincha vaults and domes. The Cathedral was also declared as a national monument of Peru in 1982.The Ica Cathedral currently exists in a state of disuse and in a heavily damaged state as a result of the 2007 Pisco earthquake and another subsequent earthquake in 2009. This thesis primarily addresses the structural analysis of the masonry envelope of the Ica Cathedral. Based on existing information, a 3D model of the walls, base courses and bell towers of the structure was constructed. Consequently this model was used for creating a FE model in Midas FX+ for DIANA software in order to investigate various hypothesis of structural damage. A review of the results of the experimental campaign carried out under the banner of the SRP and existing literature was performed in order to input material properties into the numerical model. The created FE model was then updated in terms of material properties on the basis of ambient vibration tests performed on the cathedral recently. The nonlinear behaviour of the structure was investigated in the light of various static and dynamic simulations. Additionally the validated numerical model was also used to evaluate the effectiveness of a proposed strengthening scheme. The present work was able to produce a numerical model validated in terms of existing damage. It was also able to make assesments of the seismic capacity of the cathedral and the effectiveness of the proposed strengthening in this regard. Nevertheless, further numerical modelling, including a combined model of the timber and masonry structures and subsequent structural analysis needs to performed in order to have a more conclusive assessment on the behaviour of Ica Cathedral. |
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