Diagnostic Inspection and Proposal of Repair Method of the Sanctuary of Vicoforte and Some Related Historical Structures

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The objectives of this study are a)diagnaostic inspection of deterioration of the Sanctuary of Vicoforte and some related historical structures by visual observation and non-destructive tests, b)structural and dynamic investigation, and c)interpretation of the static and dynamic behaviors of the dome by FEM. This work is a part of the surveying project "Vicoforte 2002-2006" as a joint research between Japanese and Italian scholars of Politecnico di Torino.1.Delamination of stone finishing and fresco painting are detected by visual observation and Radiation Thermometer.2.The thickness of the main dome and vaults are estimated by Electromagnetic Radar.3.Impact Echo Scanner is applied to estimate the continuity of iron ties embedded at the base of the main dome and they are probably continuous.4.Concrete Test Hammer, Scratch Tester, Simple water absorption test, Windsor Pin System are applied to estimate the compressive strength and Young's modulus of the brick and the mortar. Estimation of durability for the brick and the stone by Freezing and thawing method are also applied.5.From the microtremor measurement, the fundamental frequency of the dome is estimated.6.The load bearing mechanism and crack pattern of the structure are clarified by FEA.7.Non-destructive tests are applied to diagnostic inspection of deterioration of the chapel of Sindone and airship Hangar and from the microtremor measurement, the fundamental frequencies are estimated.8.Monitoring of temperature, inclination of the wall, cracks, and tension of the wire of he Hangar are started.9.Diagnostic inspection of deterioration of Rakanji stone arch bridge, Oita, and the brick chimneys, Tokoname, are carried out and from the dynamic test, natural frequencies and modes are estimated. Earthquake resistance efficiency of the brick chimneys is evaluated. Dynamic test of the traditional timber temples are also carried out and their dynamic characteristics are clarified.