| Co-Investigator(Kenkyū-buntansha) |
FERIDUN CILI イスタンブール工科大学, 建築学部, 教授
METIN AHUNBA イスタンブール工科大学, 建築学部, 教授
ZEYNEP AHUNB イスタンブール工科大学, 建築学部, 教授
MUFIT YORULM イスタンブール工科大学, 建築学部, 教授
AOKI Takayoshi Assistant, University of Nagasaki, 工学部, 助手 (10202467)
NAKAI Izumi Assistant Prof., University of Tsukuba, 化学系, 講師 (90155648)
SASANO Shiro Director, Japan Center for Historical Research on Fortificatio*, 城郭研究室, 室長 (20108210)
ISHIKAWA Koichiro Associate Prof., Ishikawa college of Technology, 建築学科, 助教授 (50232252)
KAWABE Yasuhiro Associate Prof., Aichi shukutoku University, 家政学科, 助教授 (70195139)
SATO Tatsuki Associate Prof., Daido Industrial University, 建設工学科, 助教授 (40131148)
MASHITA Kazuhiko Prof., Tokai University, 工学部, 教授 (80096263)
KATO Shiro Prof., Toyohashi University of Technology, 工学部, 教授 (40023303)
IIDA Kishiro Prof., Aichi Industrial University, 工学部, 教授 (80022987)
YORUIMAZ Miifit Prof., Technical University of Istanbul
AHUNBAY Zeynep Prof., Technical University of Istanbul
CCLC Fevidun Prof., Technical University of Istanbul
AHUNBAY Metin Prof., Technical University of Istanbul
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| Research Abstract |
From August 1 to October 6 of 1992, our group carried out a series of surveys and measurements concerning historical and structural studies of the dome and semi-domes of Hagia Sophia, Istanbul. Our research contains the following four works.
1) Photogrammetry of the western semi-dome and the central dome.
2) Measurement of the micro tremor.
3) Chemical analysis of building materials.
4) Detailed observation and visual recording of the dome cornice.
The result of the photogrammetry is the contour maps of the western semi-dome and the central dome including pendentives. The digitized mesh data will be approximately 71,000 points for the central dome and 31,000 for the four pendentives. The analysis of the contour map of the central dome may give some information about the exact borders of the 6th century section adjoining to the reconstructed surface of 10th and 14th century. The area between the dome and the cornice could not be photographed from the floor because of the projection of the la
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tter . The photogrammetry from the cornice was done but since data was not sufficient due to the Fossati railing blocking the view of this area, direct measurement were taken as compensation. The surveying work included the measurement of the inclination of the surface of the cornice stones. The surface finishing of the cornice stones was also examined and recorded.
In order to obtain a series of structural information, simultaneous micro tremor measurements were carried out. According to our measurements, the fundamental frequency of Hagia Sophia is about I Hz in both Ns and EW directions. Micro tremors of the two of the four minarets were also measured. The fundamental frequencies of the south-west stone minaret and the south-east brick minaret are 1 Hz and 1.25 Hz respectively.
The chemical and physical analyses of the samples taken from the city wall of Istanbul include Inductively Coupled Plasma Atomic Emission Spectroscopy, X-ray powder diffraction, Thermogravimetric analysis, Infrared spectroscopy and SEM analysis. Less
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