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

本研究的目的是：a)通过目视观察和无损检测对维科福特圣堂及其相关历史建筑的退化进行诊断性检查；b)结构和动力调查；c)用有限元法解释穹顶的静动力行为。本作品是都灵理工大学日本和意大利学者联合研究的“Vicoforte 2002-2006”调查项目的一部分。通过目测和辐射温度计检测石材饰面和壁画的分层。利用电磁雷达估算了主穹顶和拱顶的厚度。利用冲击回波扫描仪对主穹窿底部埋置的铁箍的连续性进行了估计，它们很可能是连续的。采用混凝土试验锤、划痕试验机、简易吸水试验、温莎销钉系统对砖和砂浆的抗压强度和杨氏模量进行估算。用冻融法对砖石的耐久性进行了估计。从微震测量中，估计了穹顶的基频。通过有限元分析，明确了结构的受力机理和裂纹形态。采用无损检测方法对Sindone礼拜堂和飞艇机库的老化进行了诊断性检测，并从微震测量中估计了其基频。开始对机库的温度、壁面倾斜度、裂缝、钢丝张力进行监测。对大分市Rakanji石拱桥和东名市砖烟囱进行了劣化诊断检测，并从动力试验中估计了其固有频率和模态。对砖烟囱的抗震性能进行了评价。对传统木构寺庙进行了动力试验，明确了其动力特性。

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.