A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Restoration of Architectural Stone Heritage Damaged by 2011 Great East Japan Earthquake
The Great East Japan Earthquake of 2011 caused serious damage to a number of architectural heritages. Fukushima Photo Museum (Former Laboratory of Electrics Ministry of Communications), constructed in 1922 and designated as the local governmental important cultural property, was damaged. This heritage structure was categorized into an unreinforced stone structure with local tuff stones. The strong ground motion caused cracks in the stone walls, tilting of the pediment, and falling of the stucco ceiling in the rooms. The multi-disciplinary expert committee for the restoration project was established. In order to discuss the seismic reinforcement of this damaged stone building, structural survey was performed at the first stage of the restoration project. The construction material was the local tuff stone characterized by its rather low specific gravity of 1.2. While the joints were made of cement with insufficient bonding strength, the friction coefficient of the joints was evaluated to be as high as 1.5. Finally, the committee proposed the seismic reinforcement by employing prestressing technique utilizing vertical high-strength steel-bars. The girders on the stone walls were placed by utilizing laminated wood panel of the local products. 3-D finite element model was made to detarmine the prestressing force induced. Furthermore, seisimc safety of the structure was ensured by the static structural caluclation acccording to the Japanese Seismic Evaluation Standard of exsisting RCC building. The microtremore measurement was performed before and after the structural restoration. After completion, the long-term monitoring of stress of the prestressig force induced at the steel-bars has been conducted to check the relaxation of the induced stress to the steel-bars.
Restoration of Architectural Stone Heritage Damaged by 2011 Great East Japan Earthquake
The Great East Japan Earthquake of 2011 caused serious damage to a number of architectural heritages. Fukushima Photo Museum (Former Laboratory of Electrics Ministry of Communications), constructed in 1922 and designated as the local governmental important cultural property, was damaged. This heritage structure was categorized into an unreinforced stone structure with local tuff stones. The strong ground motion caused cracks in the stone walls, tilting of the pediment, and falling of the stucco ceiling in the rooms. The multi-disciplinary expert committee for the restoration project was established. In order to discuss the seismic reinforcement of this damaged stone building, structural survey was performed at the first stage of the restoration project. The construction material was the local tuff stone characterized by its rather low specific gravity of 1.2. While the joints were made of cement with insufficient bonding strength, the friction coefficient of the joints was evaluated to be as high as 1.5. Finally, the committee proposed the seismic reinforcement by employing prestressing technique utilizing vertical high-strength steel-bars. The girders on the stone walls were placed by utilizing laminated wood panel of the local products. 3-D finite element model was made to detarmine the prestressing force induced. Furthermore, seisimc safety of the structure was ensured by the static structural caluclation acccording to the Japanese Seismic Evaluation Standard of exsisting RCC building. The microtremore measurement was performed before and after the structural restoration. After completion, the long-term monitoring of stress of the prestressig force induced at the steel-bars has been conducted to check the relaxation of the induced stress to the steel-bars.
Restoration of Architectural Stone Heritage Damaged by 2011 Great East Japan Earthquake
RILEM Bookseries
Endo, Yohei (editor) / Hanazato, Toshikazu (editor) / Hanazato, Toshikazu (author) / Suzuki, Hayato (author) / Takahashi, Hideaki (author) / Kita, Shigenori (author) / Suzuki, Tomoaki (author)
International Conference on Structural Analysis of Historical Constructions ; 2023 ; Kyoto, Japan
Structural Analysis of Historical Constructions ; Chapter: 3 ; 26-40
RILEM Bookseries ; 46
2023-09-02
15 pages
Article/Chapter (Book)
Electronic Resource
English
Hydrolink 2011/3. Great East Japan Earthquake
| HENRY – Federal Waterways Engineering and Research Institute (BAW) | 2011
The 2011 Great East Japan earthquake, tsunami and nuclear disaster
| British Library Online Contents | 2013
Bridge Damage Caused by the 2011 Great East Japan Earthquake
| British Library Conference Proceedings | 2013